<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="generator" content="rustdoc">
<meta name="description" content="Source to the Rust file `libstd/thread/mod.rs`.">
<meta name="keywords" content="rust, rustlang, rust-lang">
<title>mod.rs.html -- source</title>
<link rel="stylesheet" type="text/css" href="../../../normalize.css">
<link rel="stylesheet" type="text/css" href="../../../rustdoc.css" id="mainThemeStyle">
<link rel="stylesheet" type="text/css" href="../../../dark.css">
<link rel="stylesheet" type="text/css" href="../../../main.css" id="themeStyle">
<script src="../../../storage.js"></script>
<link rel="shortcut icon" href="https://doc.rust-lang.org/favicon.ico">
</head>
<body class="rustdoc source">
<!--[if lte IE 8]>
<div class="warning">
This old browser is unsupported and will most likely display funky
things.
</div>
<![endif]-->
<nav class="sidebar">
<div class="sidebar-menu">☰</div>
<a href='../../../std/index.html'><img src='https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png' alt='logo' width='100'></a>
</nav>
<div class="theme-picker">
<button id="theme-picker" aria-label="Pick another theme!">
<img src="../../../brush.svg" width="18" alt="Pick another theme!">
</button>
<div id="theme-choices"></div>
</div>
<script src="../../../theme.js"></script>
<nav class="sub">
<form class="search-form js-only">
<div class="search-container">
<input class="search-input" name="search"
autocomplete="off"
placeholder="Click or press ‘S’ to search, ‘?’ for more options…"
type="search">
</div>
</form>
</nav>
<section id='main' class="content"><pre class="line-numbers"><span id="1"> 1</span>
<span id="2"> 2</span>
<span id="3"> 3</span>
<span id="4"> 4</span>
<span id="5"> 5</span>
<span id="6"> 6</span>
<span id="7"> 7</span>
<span id="8"> 8</span>
<span id="9"> 9</span>
<span id="10"> 10</span>
<span id="11"> 11</span>
<span id="12"> 12</span>
<span id="13"> 13</span>
<span id="14"> 14</span>
<span id="15"> 15</span>
<span id="16"> 16</span>
<span id="17"> 17</span>
<span id="18"> 18</span>
<span id="19"> 19</span>
<span id="20"> 20</span>
<span id="21"> 21</span>
<span id="22"> 22</span>
<span id="23"> 23</span>
<span id="24"> 24</span>
<span id="25"> 25</span>
<span id="26"> 26</span>
<span id="27"> 27</span>
<span id="28"> 28</span>
<span id="29"> 29</span>
<span id="30"> 30</span>
<span id="31"> 31</span>
<span id="32"> 32</span>
<span id="33"> 33</span>
<span id="34"> 34</span>
<span id="35"> 35</span>
<span id="36"> 36</span>
<span id="37"> 37</span>
<span id="38"> 38</span>
<span id="39"> 39</span>
<span id="40"> 40</span>
<span id="41"> 41</span>
<span id="42"> 42</span>
<span id="43"> 43</span>
<span id="44"> 44</span>
<span id="45"> 45</span>
<span id="46"> 46</span>
<span id="47"> 47</span>
<span id="48"> 48</span>
<span id="49"> 49</span>
<span id="50"> 50</span>
<span id="51"> 51</span>
<span id="52"> 52</span>
<span id="53"> 53</span>
<span id="54"> 54</span>
<span id="55"> 55</span>
<span id="56"> 56</span>
<span id="57"> 57</span>
<span id="58"> 58</span>
<span id="59"> 59</span>
<span id="60"> 60</span>
<span id="61"> 61</span>
<span id="62"> 62</span>
<span id="63"> 63</span>
<span id="64"> 64</span>
<span id="65"> 65</span>
<span id="66"> 66</span>
<span id="67"> 67</span>
<span id="68"> 68</span>
<span id="69"> 69</span>
<span id="70"> 70</span>
<span id="71"> 71</span>
<span id="72"> 72</span>
<span id="73"> 73</span>
<span id="74"> 74</span>
<span id="75"> 75</span>
<span id="76"> 76</span>
<span id="77"> 77</span>
<span id="78"> 78</span>
<span id="79"> 79</span>
<span id="80"> 80</span>
<span id="81"> 81</span>
<span id="82"> 82</span>
<span id="83"> 83</span>
<span id="84"> 84</span>
<span id="85"> 85</span>
<span id="86"> 86</span>
<span id="87"> 87</span>
<span id="88"> 88</span>
<span id="89"> 89</span>
<span id="90"> 90</span>
<span id="91"> 91</span>
<span id="92"> 92</span>
<span id="93"> 93</span>
<span id="94"> 94</span>
<span id="95"> 95</span>
<span id="96"> 96</span>
<span id="97"> 97</span>
<span id="98"> 98</span>
<span id="99"> 99</span>
<span id="100"> 100</span>
<span id="101"> 101</span>
<span id="102"> 102</span>
<span id="103"> 103</span>
<span id="104"> 104</span>
<span id="105"> 105</span>
<span id="106"> 106</span>
<span id="107"> 107</span>
<span id="108"> 108</span>
<span id="109"> 109</span>
<span id="110"> 110</span>
<span id="111"> 111</span>
<span id="112"> 112</span>
<span id="113"> 113</span>
<span id="114"> 114</span>
<span id="115"> 115</span>
<span id="116"> 116</span>
<span id="117"> 117</span>
<span id="118"> 118</span>
<span id="119"> 119</span>
<span id="120"> 120</span>
<span id="121"> 121</span>
<span id="122"> 122</span>
<span id="123"> 123</span>
<span id="124"> 124</span>
<span id="125"> 125</span>
<span id="126"> 126</span>
<span id="127"> 127</span>
<span id="128"> 128</span>
<span id="129"> 129</span>
<span id="130"> 130</span>
<span id="131"> 131</span>
<span id="132"> 132</span>
<span id="133"> 133</span>
<span id="134"> 134</span>
<span id="135"> 135</span>
<span id="136"> 136</span>
<span id="137"> 137</span>
<span id="138"> 138</span>
<span id="139"> 139</span>
<span id="140"> 140</span>
<span id="141"> 141</span>
<span id="142"> 142</span>
<span id="143"> 143</span>
<span id="144"> 144</span>
<span id="145"> 145</span>
<span id="146"> 146</span>
<span id="147"> 147</span>
<span id="148"> 148</span>
<span id="149"> 149</span>
<span id="150"> 150</span>
<span id="151"> 151</span>
<span id="152"> 152</span>
<span id="153"> 153</span>
<span id="154"> 154</span>
<span id="155"> 155</span>
<span id="156"> 156</span>
<span id="157"> 157</span>
<span id="158"> 158</span>
<span id="159"> 159</span>
<span id="160"> 160</span>
<span id="161"> 161</span>
<span id="162"> 162</span>
<span id="163"> 163</span>
<span id="164"> 164</span>
<span id="165"> 165</span>
<span id="166"> 166</span>
<span id="167"> 167</span>
<span id="168"> 168</span>
<span id="169"> 169</span>
<span id="170"> 170</span>
<span id="171"> 171</span>
<span id="172"> 172</span>
<span id="173"> 173</span>
<span id="174"> 174</span>
<span id="175"> 175</span>
<span id="176"> 176</span>
<span id="177"> 177</span>
<span id="178"> 178</span>
<span id="179"> 179</span>
<span id="180"> 180</span>
<span id="181"> 181</span>
<span id="182"> 182</span>
<span id="183"> 183</span>
<span id="184"> 184</span>
<span id="185"> 185</span>
<span id="186"> 186</span>
<span id="187"> 187</span>
<span id="188"> 188</span>
<span id="189"> 189</span>
<span id="190"> 190</span>
<span id="191"> 191</span>
<span id="192"> 192</span>
<span id="193"> 193</span>
<span id="194"> 194</span>
<span id="195"> 195</span>
<span id="196"> 196</span>
<span id="197"> 197</span>
<span id="198"> 198</span>
<span id="199"> 199</span>
<span id="200"> 200</span>
<span id="201"> 201</span>
<span id="202"> 202</span>
<span id="203"> 203</span>
<span id="204"> 204</span>
<span id="205"> 205</span>
<span id="206"> 206</span>
<span id="207"> 207</span>
<span id="208"> 208</span>
<span id="209"> 209</span>
<span id="210"> 210</span>
<span id="211"> 211</span>
<span id="212"> 212</span>
<span id="213"> 213</span>
<span id="214"> 214</span>
<span id="215"> 215</span>
<span id="216"> 216</span>
<span id="217"> 217</span>
<span id="218"> 218</span>
<span id="219"> 219</span>
<span id="220"> 220</span>
<span id="221"> 221</span>
<span id="222"> 222</span>
<span id="223"> 223</span>
<span id="224"> 224</span>
<span id="225"> 225</span>
<span id="226"> 226</span>
<span id="227"> 227</span>
<span id="228"> 228</span>
<span id="229"> 229</span>
<span id="230"> 230</span>
<span id="231"> 231</span>
<span id="232"> 232</span>
<span id="233"> 233</span>
<span id="234"> 234</span>
<span id="235"> 235</span>
<span id="236"> 236</span>
<span id="237"> 237</span>
<span id="238"> 238</span>
<span id="239"> 239</span>
<span id="240"> 240</span>
<span id="241"> 241</span>
<span id="242"> 242</span>
<span id="243"> 243</span>
<span id="244"> 244</span>
<span id="245"> 245</span>
<span id="246"> 246</span>
<span id="247"> 247</span>
<span id="248"> 248</span>
<span id="249"> 249</span>
<span id="250"> 250</span>
<span id="251"> 251</span>
<span id="252"> 252</span>
<span id="253"> 253</span>
<span id="254"> 254</span>
<span id="255"> 255</span>
<span id="256"> 256</span>
<span id="257"> 257</span>
<span id="258"> 258</span>
<span id="259"> 259</span>
<span id="260"> 260</span>
<span id="261"> 261</span>
<span id="262"> 262</span>
<span id="263"> 263</span>
<span id="264"> 264</span>
<span id="265"> 265</span>
<span id="266"> 266</span>
<span id="267"> 267</span>
<span id="268"> 268</span>
<span id="269"> 269</span>
<span id="270"> 270</span>
<span id="271"> 271</span>
<span id="272"> 272</span>
<span id="273"> 273</span>
<span id="274"> 274</span>
<span id="275"> 275</span>
<span id="276"> 276</span>
<span id="277"> 277</span>
<span id="278"> 278</span>
<span id="279"> 279</span>
<span id="280"> 280</span>
<span id="281"> 281</span>
<span id="282"> 282</span>
<span id="283"> 283</span>
<span id="284"> 284</span>
<span id="285"> 285</span>
<span id="286"> 286</span>
<span id="287"> 287</span>
<span id="288"> 288</span>
<span id="289"> 289</span>
<span id="290"> 290</span>
<span id="291"> 291</span>
<span id="292"> 292</span>
<span id="293"> 293</span>
<span id="294"> 294</span>
<span id="295"> 295</span>
<span id="296"> 296</span>
<span id="297"> 297</span>
<span id="298"> 298</span>
<span id="299"> 299</span>
<span id="300"> 300</span>
<span id="301"> 301</span>
<span id="302"> 302</span>
<span id="303"> 303</span>
<span id="304"> 304</span>
<span id="305"> 305</span>
<span id="306"> 306</span>
<span id="307"> 307</span>
<span id="308"> 308</span>
<span id="309"> 309</span>
<span id="310"> 310</span>
<span id="311"> 311</span>
<span id="312"> 312</span>
<span id="313"> 313</span>
<span id="314"> 314</span>
<span id="315"> 315</span>
<span id="316"> 316</span>
<span id="317"> 317</span>
<span id="318"> 318</span>
<span id="319"> 319</span>
<span id="320"> 320</span>
<span id="321"> 321</span>
<span id="322"> 322</span>
<span id="323"> 323</span>
<span id="324"> 324</span>
<span id="325"> 325</span>
<span id="326"> 326</span>
<span id="327"> 327</span>
<span id="328"> 328</span>
<span id="329"> 329</span>
<span id="330"> 330</span>
<span id="331"> 331</span>
<span id="332"> 332</span>
<span id="333"> 333</span>
<span id="334"> 334</span>
<span id="335"> 335</span>
<span id="336"> 336</span>
<span id="337"> 337</span>
<span id="338"> 338</span>
<span id="339"> 339</span>
<span id="340"> 340</span>
<span id="341"> 341</span>
<span id="342"> 342</span>
<span id="343"> 343</span>
<span id="344"> 344</span>
<span id="345"> 345</span>
<span id="346"> 346</span>
<span id="347"> 347</span>
<span id="348"> 348</span>
<span id="349"> 349</span>
<span id="350"> 350</span>
<span id="351"> 351</span>
<span id="352"> 352</span>
<span id="353"> 353</span>
<span id="354"> 354</span>
<span id="355"> 355</span>
<span id="356"> 356</span>
<span id="357"> 357</span>
<span id="358"> 358</span>
<span id="359"> 359</span>
<span id="360"> 360</span>
<span id="361"> 361</span>
<span id="362"> 362</span>
<span id="363"> 363</span>
<span id="364"> 364</span>
<span id="365"> 365</span>
<span id="366"> 366</span>
<span id="367"> 367</span>
<span id="368"> 368</span>
<span id="369"> 369</span>
<span id="370"> 370</span>
<span id="371"> 371</span>
<span id="372"> 372</span>
<span id="373"> 373</span>
<span id="374"> 374</span>
<span id="375"> 375</span>
<span id="376"> 376</span>
<span id="377"> 377</span>
<span id="378"> 378</span>
<span id="379"> 379</span>
<span id="380"> 380</span>
<span id="381"> 381</span>
<span id="382"> 382</span>
<span id="383"> 383</span>
<span id="384"> 384</span>
<span id="385"> 385</span>
<span id="386"> 386</span>
<span id="387"> 387</span>
<span id="388"> 388</span>
<span id="389"> 389</span>
<span id="390"> 390</span>
<span id="391"> 391</span>
<span id="392"> 392</span>
<span id="393"> 393</span>
<span id="394"> 394</span>
<span id="395"> 395</span>
<span id="396"> 396</span>
<span id="397"> 397</span>
<span id="398"> 398</span>
<span id="399"> 399</span>
<span id="400"> 400</span>
<span id="401"> 401</span>
<span id="402"> 402</span>
<span id="403"> 403</span>
<span id="404"> 404</span>
<span id="405"> 405</span>
<span id="406"> 406</span>
<span id="407"> 407</span>
<span id="408"> 408</span>
<span id="409"> 409</span>
<span id="410"> 410</span>
<span id="411"> 411</span>
<span id="412"> 412</span>
<span id="413"> 413</span>
<span id="414"> 414</span>
<span id="415"> 415</span>
<span id="416"> 416</span>
<span id="417"> 417</span>
<span id="418"> 418</span>
<span id="419"> 419</span>
<span id="420"> 420</span>
<span id="421"> 421</span>
<span id="422"> 422</span>
<span id="423"> 423</span>
<span id="424"> 424</span>
<span id="425"> 425</span>
<span id="426"> 426</span>
<span id="427"> 427</span>
<span id="428"> 428</span>
<span id="429"> 429</span>
<span id="430"> 430</span>
<span id="431"> 431</span>
<span id="432"> 432</span>
<span id="433"> 433</span>
<span id="434"> 434</span>
<span id="435"> 435</span>
<span id="436"> 436</span>
<span id="437"> 437</span>
<span id="438"> 438</span>
<span id="439"> 439</span>
<span id="440"> 440</span>
<span id="441"> 441</span>
<span id="442"> 442</span>
<span id="443"> 443</span>
<span id="444"> 444</span>
<span id="445"> 445</span>
<span id="446"> 446</span>
<span id="447"> 447</span>
<span id="448"> 448</span>
<span id="449"> 449</span>
<span id="450"> 450</span>
<span id="451"> 451</span>
<span id="452"> 452</span>
<span id="453"> 453</span>
<span id="454"> 454</span>
<span id="455"> 455</span>
<span id="456"> 456</span>
<span id="457"> 457</span>
<span id="458"> 458</span>
<span id="459"> 459</span>
<span id="460"> 460</span>
<span id="461"> 461</span>
<span id="462"> 462</span>
<span id="463"> 463</span>
<span id="464"> 464</span>
<span id="465"> 465</span>
<span id="466"> 466</span>
<span id="467"> 467</span>
<span id="468"> 468</span>
<span id="469"> 469</span>
<span id="470"> 470</span>
<span id="471"> 471</span>
<span id="472"> 472</span>
<span id="473"> 473</span>
<span id="474"> 474</span>
<span id="475"> 475</span>
<span id="476"> 476</span>
<span id="477"> 477</span>
<span id="478"> 478</span>
<span id="479"> 479</span>
<span id="480"> 480</span>
<span id="481"> 481</span>
<span id="482"> 482</span>
<span id="483"> 483</span>
<span id="484"> 484</span>
<span id="485"> 485</span>
<span id="486"> 486</span>
<span id="487"> 487</span>
<span id="488"> 488</span>
<span id="489"> 489</span>
<span id="490"> 490</span>
<span id="491"> 491</span>
<span id="492"> 492</span>
<span id="493"> 493</span>
<span id="494"> 494</span>
<span id="495"> 495</span>
<span id="496"> 496</span>
<span id="497"> 497</span>
<span id="498"> 498</span>
<span id="499"> 499</span>
<span id="500"> 500</span>
<span id="501"> 501</span>
<span id="502"> 502</span>
<span id="503"> 503</span>
<span id="504"> 504</span>
<span id="505"> 505</span>
<span id="506"> 506</span>
<span id="507"> 507</span>
<span id="508"> 508</span>
<span id="509"> 509</span>
<span id="510"> 510</span>
<span id="511"> 511</span>
<span id="512"> 512</span>
<span id="513"> 513</span>
<span id="514"> 514</span>
<span id="515"> 515</span>
<span id="516"> 516</span>
<span id="517"> 517</span>
<span id="518"> 518</span>
<span id="519"> 519</span>
<span id="520"> 520</span>
<span id="521"> 521</span>
<span id="522"> 522</span>
<span id="523"> 523</span>
<span id="524"> 524</span>
<span id="525"> 525</span>
<span id="526"> 526</span>
<span id="527"> 527</span>
<span id="528"> 528</span>
<span id="529"> 529</span>
<span id="530"> 530</span>
<span id="531"> 531</span>
<span id="532"> 532</span>
<span id="533"> 533</span>
<span id="534"> 534</span>
<span id="535"> 535</span>
<span id="536"> 536</span>
<span id="537"> 537</span>
<span id="538"> 538</span>
<span id="539"> 539</span>
<span id="540"> 540</span>
<span id="541"> 541</span>
<span id="542"> 542</span>
<span id="543"> 543</span>
<span id="544"> 544</span>
<span id="545"> 545</span>
<span id="546"> 546</span>
<span id="547"> 547</span>
<span id="548"> 548</span>
<span id="549"> 549</span>
<span id="550"> 550</span>
<span id="551"> 551</span>
<span id="552"> 552</span>
<span id="553"> 553</span>
<span id="554"> 554</span>
<span id="555"> 555</span>
<span id="556"> 556</span>
<span id="557"> 557</span>
<span id="558"> 558</span>
<span id="559"> 559</span>
<span id="560"> 560</span>
<span id="561"> 561</span>
<span id="562"> 562</span>
<span id="563"> 563</span>
<span id="564"> 564</span>
<span id="565"> 565</span>
<span id="566"> 566</span>
<span id="567"> 567</span>
<span id="568"> 568</span>
<span id="569"> 569</span>
<span id="570"> 570</span>
<span id="571"> 571</span>
<span id="572"> 572</span>
<span id="573"> 573</span>
<span id="574"> 574</span>
<span id="575"> 575</span>
<span id="576"> 576</span>
<span id="577"> 577</span>
<span id="578"> 578</span>
<span id="579"> 579</span>
<span id="580"> 580</span>
<span id="581"> 581</span>
<span id="582"> 582</span>
<span id="583"> 583</span>
<span id="584"> 584</span>
<span id="585"> 585</span>
<span id="586"> 586</span>
<span id="587"> 587</span>
<span id="588"> 588</span>
<span id="589"> 589</span>
<span id="590"> 590</span>
<span id="591"> 591</span>
<span id="592"> 592</span>
<span id="593"> 593</span>
<span id="594"> 594</span>
<span id="595"> 595</span>
<span id="596"> 596</span>
<span id="597"> 597</span>
<span id="598"> 598</span>
<span id="599"> 599</span>
<span id="600"> 600</span>
<span id="601"> 601</span>
<span id="602"> 602</span>
<span id="603"> 603</span>
<span id="604"> 604</span>
<span id="605"> 605</span>
<span id="606"> 606</span>
<span id="607"> 607</span>
<span id="608"> 608</span>
<span id="609"> 609</span>
<span id="610"> 610</span>
<span id="611"> 611</span>
<span id="612"> 612</span>
<span id="613"> 613</span>
<span id="614"> 614</span>
<span id="615"> 615</span>
<span id="616"> 616</span>
<span id="617"> 617</span>
<span id="618"> 618</span>
<span id="619"> 619</span>
<span id="620"> 620</span>
<span id="621"> 621</span>
<span id="622"> 622</span>
<span id="623"> 623</span>
<span id="624"> 624</span>
<span id="625"> 625</span>
<span id="626"> 626</span>
<span id="627"> 627</span>
<span id="628"> 628</span>
<span id="629"> 629</span>
<span id="630"> 630</span>
<span id="631"> 631</span>
<span id="632"> 632</span>
<span id="633"> 633</span>
<span id="634"> 634</span>
<span id="635"> 635</span>
<span id="636"> 636</span>
<span id="637"> 637</span>
<span id="638"> 638</span>
<span id="639"> 639</span>
<span id="640"> 640</span>
<span id="641"> 641</span>
<span id="642"> 642</span>
<span id="643"> 643</span>
<span id="644"> 644</span>
<span id="645"> 645</span>
<span id="646"> 646</span>
<span id="647"> 647</span>
<span id="648"> 648</span>
<span id="649"> 649</span>
<span id="650"> 650</span>
<span id="651"> 651</span>
<span id="652"> 652</span>
<span id="653"> 653</span>
<span id="654"> 654</span>
<span id="655"> 655</span>
<span id="656"> 656</span>
<span id="657"> 657</span>
<span id="658"> 658</span>
<span id="659"> 659</span>
<span id="660"> 660</span>
<span id="661"> 661</span>
<span id="662"> 662</span>
<span id="663"> 663</span>
<span id="664"> 664</span>
<span id="665"> 665</span>
<span id="666"> 666</span>
<span id="667"> 667</span>
<span id="668"> 668</span>
<span id="669"> 669</span>
<span id="670"> 670</span>
<span id="671"> 671</span>
<span id="672"> 672</span>
<span id="673"> 673</span>
<span id="674"> 674</span>
<span id="675"> 675</span>
<span id="676"> 676</span>
<span id="677"> 677</span>
<span id="678"> 678</span>
<span id="679"> 679</span>
<span id="680"> 680</span>
<span id="681"> 681</span>
<span id="682"> 682</span>
<span id="683"> 683</span>
<span id="684"> 684</span>
<span id="685"> 685</span>
<span id="686"> 686</span>
<span id="687"> 687</span>
<span id="688"> 688</span>
<span id="689"> 689</span>
<span id="690"> 690</span>
<span id="691"> 691</span>
<span id="692"> 692</span>
<span id="693"> 693</span>
<span id="694"> 694</span>
<span id="695"> 695</span>
<span id="696"> 696</span>
<span id="697"> 697</span>
<span id="698"> 698</span>
<span id="699"> 699</span>
<span id="700"> 700</span>
<span id="701"> 701</span>
<span id="702"> 702</span>
<span id="703"> 703</span>
<span id="704"> 704</span>
<span id="705"> 705</span>
<span id="706"> 706</span>
<span id="707"> 707</span>
<span id="708"> 708</span>
<span id="709"> 709</span>
<span id="710"> 710</span>
<span id="711"> 711</span>
<span id="712"> 712</span>
<span id="713"> 713</span>
<span id="714"> 714</span>
<span id="715"> 715</span>
<span id="716"> 716</span>
<span id="717"> 717</span>
<span id="718"> 718</span>
<span id="719"> 719</span>
<span id="720"> 720</span>
<span id="721"> 721</span>
<span id="722"> 722</span>
<span id="723"> 723</span>
<span id="724"> 724</span>
<span id="725"> 725</span>
<span id="726"> 726</span>
<span id="727"> 727</span>
<span id="728"> 728</span>
<span id="729"> 729</span>
<span id="730"> 730</span>
<span id="731"> 731</span>
<span id="732"> 732</span>
<span id="733"> 733</span>
<span id="734"> 734</span>
<span id="735"> 735</span>
<span id="736"> 736</span>
<span id="737"> 737</span>
<span id="738"> 738</span>
<span id="739"> 739</span>
<span id="740"> 740</span>
<span id="741"> 741</span>
<span id="742"> 742</span>
<span id="743"> 743</span>
<span id="744"> 744</span>
<span id="745"> 745</span>
<span id="746"> 746</span>
<span id="747"> 747</span>
<span id="748"> 748</span>
<span id="749"> 749</span>
<span id="750"> 750</span>
<span id="751"> 751</span>
<span id="752"> 752</span>
<span id="753"> 753</span>
<span id="754"> 754</span>
<span id="755"> 755</span>
<span id="756"> 756</span>
<span id="757"> 757</span>
<span id="758"> 758</span>
<span id="759"> 759</span>
<span id="760"> 760</span>
<span id="761"> 761</span>
<span id="762"> 762</span>
<span id="763"> 763</span>
<span id="764"> 764</span>
<span id="765"> 765</span>
<span id="766"> 766</span>
<span id="767"> 767</span>
<span id="768"> 768</span>
<span id="769"> 769</span>
<span id="770"> 770</span>
<span id="771"> 771</span>
<span id="772"> 772</span>
<span id="773"> 773</span>
<span id="774"> 774</span>
<span id="775"> 775</span>
<span id="776"> 776</span>
<span id="777"> 777</span>
<span id="778"> 778</span>
<span id="779"> 779</span>
<span id="780"> 780</span>
<span id="781"> 781</span>
<span id="782"> 782</span>
<span id="783"> 783</span>
<span id="784"> 784</span>
<span id="785"> 785</span>
<span id="786"> 786</span>
<span id="787"> 787</span>
<span id="788"> 788</span>
<span id="789"> 789</span>
<span id="790"> 790</span>
<span id="791"> 791</span>
<span id="792"> 792</span>
<span id="793"> 793</span>
<span id="794"> 794</span>
<span id="795"> 795</span>
<span id="796"> 796</span>
<span id="797"> 797</span>
<span id="798"> 798</span>
<span id="799"> 799</span>
<span id="800"> 800</span>
<span id="801"> 801</span>
<span id="802"> 802</span>
<span id="803"> 803</span>
<span id="804"> 804</span>
<span id="805"> 805</span>
<span id="806"> 806</span>
<span id="807"> 807</span>
<span id="808"> 808</span>
<span id="809"> 809</span>
<span id="810"> 810</span>
<span id="811"> 811</span>
<span id="812"> 812</span>
<span id="813"> 813</span>
<span id="814"> 814</span>
<span id="815"> 815</span>
<span id="816"> 816</span>
<span id="817"> 817</span>
<span id="818"> 818</span>
<span id="819"> 819</span>
<span id="820"> 820</span>
<span id="821"> 821</span>
<span id="822"> 822</span>
<span id="823"> 823</span>
<span id="824"> 824</span>
<span id="825"> 825</span>
<span id="826"> 826</span>
<span id="827"> 827</span>
<span id="828"> 828</span>
<span id="829"> 829</span>
<span id="830"> 830</span>
<span id="831"> 831</span>
<span id="832"> 832</span>
<span id="833"> 833</span>
<span id="834"> 834</span>
<span id="835"> 835</span>
<span id="836"> 836</span>
<span id="837"> 837</span>
<span id="838"> 838</span>
<span id="839"> 839</span>
<span id="840"> 840</span>
<span id="841"> 841</span>
<span id="842"> 842</span>
<span id="843"> 843</span>
<span id="844"> 844</span>
<span id="845"> 845</span>
<span id="846"> 846</span>
<span id="847"> 847</span>
<span id="848"> 848</span>
<span id="849"> 849</span>
<span id="850"> 850</span>
<span id="851"> 851</span>
<span id="852"> 852</span>
<span id="853"> 853</span>
<span id="854"> 854</span>
<span id="855"> 855</span>
<span id="856"> 856</span>
<span id="857"> 857</span>
<span id="858"> 858</span>
<span id="859"> 859</span>
<span id="860"> 860</span>
<span id="861"> 861</span>
<span id="862"> 862</span>
<span id="863"> 863</span>
<span id="864"> 864</span>
<span id="865"> 865</span>
<span id="866"> 866</span>
<span id="867"> 867</span>
<span id="868"> 868</span>
<span id="869"> 869</span>
<span id="870"> 870</span>
<span id="871"> 871</span>
<span id="872"> 872</span>
<span id="873"> 873</span>
<span id="874"> 874</span>
<span id="875"> 875</span>
<span id="876"> 876</span>
<span id="877"> 877</span>
<span id="878"> 878</span>
<span id="879"> 879</span>
<span id="880"> 880</span>
<span id="881"> 881</span>
<span id="882"> 882</span>
<span id="883"> 883</span>
<span id="884"> 884</span>
<span id="885"> 885</span>
<span id="886"> 886</span>
<span id="887"> 887</span>
<span id="888"> 888</span>
<span id="889"> 889</span>
<span id="890"> 890</span>
<span id="891"> 891</span>
<span id="892"> 892</span>
<span id="893"> 893</span>
<span id="894"> 894</span>
<span id="895"> 895</span>
<span id="896"> 896</span>
<span id="897"> 897</span>
<span id="898"> 898</span>
<span id="899"> 899</span>
<span id="900"> 900</span>
<span id="901"> 901</span>
<span id="902"> 902</span>
<span id="903"> 903</span>
<span id="904"> 904</span>
<span id="905"> 905</span>
<span id="906"> 906</span>
<span id="907"> 907</span>
<span id="908"> 908</span>
<span id="909"> 909</span>
<span id="910"> 910</span>
<span id="911"> 911</span>
<span id="912"> 912</span>
<span id="913"> 913</span>
<span id="914"> 914</span>
<span id="915"> 915</span>
<span id="916"> 916</span>
<span id="917"> 917</span>
<span id="918"> 918</span>
<span id="919"> 919</span>
<span id="920"> 920</span>
<span id="921"> 921</span>
<span id="922"> 922</span>
<span id="923"> 923</span>
<span id="924"> 924</span>
<span id="925"> 925</span>
<span id="926"> 926</span>
<span id="927"> 927</span>
<span id="928"> 928</span>
<span id="929"> 929</span>
<span id="930"> 930</span>
<span id="931"> 931</span>
<span id="932"> 932</span>
<span id="933"> 933</span>
<span id="934"> 934</span>
<span id="935"> 935</span>
<span id="936"> 936</span>
<span id="937"> 937</span>
<span id="938"> 938</span>
<span id="939"> 939</span>
<span id="940"> 940</span>
<span id="941"> 941</span>
<span id="942"> 942</span>
<span id="943"> 943</span>
<span id="944"> 944</span>
<span id="945"> 945</span>
<span id="946"> 946</span>
<span id="947"> 947</span>
<span id="948"> 948</span>
<span id="949"> 949</span>
<span id="950"> 950</span>
<span id="951"> 951</span>
<span id="952"> 952</span>
<span id="953"> 953</span>
<span id="954"> 954</span>
<span id="955"> 955</span>
<span id="956"> 956</span>
<span id="957"> 957</span>
<span id="958"> 958</span>
<span id="959"> 959</span>
<span id="960"> 960</span>
<span id="961"> 961</span>
<span id="962"> 962</span>
<span id="963"> 963</span>
<span id="964"> 964</span>
<span id="965"> 965</span>
<span id="966"> 966</span>
<span id="967"> 967</span>
<span id="968"> 968</span>
<span id="969"> 969</span>
<span id="970"> 970</span>
<span id="971"> 971</span>
<span id="972"> 972</span>
<span id="973"> 973</span>
<span id="974"> 974</span>
<span id="975"> 975</span>
<span id="976"> 976</span>
<span id="977"> 977</span>
<span id="978"> 978</span>
<span id="979"> 979</span>
<span id="980"> 980</span>
<span id="981"> 981</span>
<span id="982"> 982</span>
<span id="983"> 983</span>
<span id="984"> 984</span>
<span id="985"> 985</span>
<span id="986"> 986</span>
<span id="987"> 987</span>
<span id="988"> 988</span>
<span id="989"> 989</span>
<span id="990"> 990</span>
<span id="991"> 991</span>
<span id="992"> 992</span>
<span id="993"> 993</span>
<span id="994"> 994</span>
<span id="995"> 995</span>
<span id="996"> 996</span>
<span id="997"> 997</span>
<span id="998"> 998</span>
<span id="999"> 999</span>
<span id="1000">1000</span>
<span id="1001">1001</span>
<span id="1002">1002</span>
<span id="1003">1003</span>
<span id="1004">1004</span>
<span id="1005">1005</span>
<span id="1006">1006</span>
<span id="1007">1007</span>
<span id="1008">1008</span>
<span id="1009">1009</span>
<span id="1010">1010</span>
<span id="1011">1011</span>
<span id="1012">1012</span>
<span id="1013">1013</span>
<span id="1014">1014</span>
<span id="1015">1015</span>
<span id="1016">1016</span>
<span id="1017">1017</span>
<span id="1018">1018</span>
<span id="1019">1019</span>
<span id="1020">1020</span>
<span id="1021">1021</span>
<span id="1022">1022</span>
<span id="1023">1023</span>
<span id="1024">1024</span>
<span id="1025">1025</span>
<span id="1026">1026</span>
<span id="1027">1027</span>
<span id="1028">1028</span>
<span id="1029">1029</span>
<span id="1030">1030</span>
<span id="1031">1031</span>
<span id="1032">1032</span>
<span id="1033">1033</span>
<span id="1034">1034</span>
<span id="1035">1035</span>
<span id="1036">1036</span>
<span id="1037">1037</span>
<span id="1038">1038</span>
<span id="1039">1039</span>
<span id="1040">1040</span>
<span id="1041">1041</span>
<span id="1042">1042</span>
<span id="1043">1043</span>
<span id="1044">1044</span>
<span id="1045">1045</span>
<span id="1046">1046</span>
<span id="1047">1047</span>
<span id="1048">1048</span>
<span id="1049">1049</span>
<span id="1050">1050</span>
<span id="1051">1051</span>
<span id="1052">1052</span>
<span id="1053">1053</span>
<span id="1054">1054</span>
<span id="1055">1055</span>
<span id="1056">1056</span>
<span id="1057">1057</span>
<span id="1058">1058</span>
<span id="1059">1059</span>
<span id="1060">1060</span>
<span id="1061">1061</span>
<span id="1062">1062</span>
<span id="1063">1063</span>
<span id="1064">1064</span>
<span id="1065">1065</span>
<span id="1066">1066</span>
<span id="1067">1067</span>
<span id="1068">1068</span>
<span id="1069">1069</span>
<span id="1070">1070</span>
<span id="1071">1071</span>
<span id="1072">1072</span>
<span id="1073">1073</span>
<span id="1074">1074</span>
<span id="1075">1075</span>
<span id="1076">1076</span>
<span id="1077">1077</span>
<span id="1078">1078</span>
<span id="1079">1079</span>
<span id="1080">1080</span>
<span id="1081">1081</span>
<span id="1082">1082</span>
<span id="1083">1083</span>
<span id="1084">1084</span>
<span id="1085">1085</span>
<span id="1086">1086</span>
<span id="1087">1087</span>
<span id="1088">1088</span>
<span id="1089">1089</span>
<span id="1090">1090</span>
<span id="1091">1091</span>
<span id="1092">1092</span>
<span id="1093">1093</span>
<span id="1094">1094</span>
<span id="1095">1095</span>
<span id="1096">1096</span>
<span id="1097">1097</span>
<span id="1098">1098</span>
<span id="1099">1099</span>
<span id="1100">1100</span>
<span id="1101">1101</span>
<span id="1102">1102</span>
<span id="1103">1103</span>
<span id="1104">1104</span>
<span id="1105">1105</span>
<span id="1106">1106</span>
<span id="1107">1107</span>
<span id="1108">1108</span>
<span id="1109">1109</span>
<span id="1110">1110</span>
<span id="1111">1111</span>
<span id="1112">1112</span>
<span id="1113">1113</span>
<span id="1114">1114</span>
<span id="1115">1115</span>
<span id="1116">1116</span>
<span id="1117">1117</span>
<span id="1118">1118</span>
<span id="1119">1119</span>
<span id="1120">1120</span>
<span id="1121">1121</span>
<span id="1122">1122</span>
<span id="1123">1123</span>
<span id="1124">1124</span>
<span id="1125">1125</span>
<span id="1126">1126</span>
<span id="1127">1127</span>
<span id="1128">1128</span>
<span id="1129">1129</span>
<span id="1130">1130</span>
<span id="1131">1131</span>
<span id="1132">1132</span>
<span id="1133">1133</span>
<span id="1134">1134</span>
<span id="1135">1135</span>
<span id="1136">1136</span>
<span id="1137">1137</span>
<span id="1138">1138</span>
<span id="1139">1139</span>
<span id="1140">1140</span>
<span id="1141">1141</span>
<span id="1142">1142</span>
<span id="1143">1143</span>
<span id="1144">1144</span>
<span id="1145">1145</span>
<span id="1146">1146</span>
<span id="1147">1147</span>
<span id="1148">1148</span>
<span id="1149">1149</span>
<span id="1150">1150</span>
<span id="1151">1151</span>
<span id="1152">1152</span>
<span id="1153">1153</span>
<span id="1154">1154</span>
<span id="1155">1155</span>
<span id="1156">1156</span>
<span id="1157">1157</span>
<span id="1158">1158</span>
<span id="1159">1159</span>
<span id="1160">1160</span>
<span id="1161">1161</span>
<span id="1162">1162</span>
<span id="1163">1163</span>
<span id="1164">1164</span>
<span id="1165">1165</span>
<span id="1166">1166</span>
<span id="1167">1167</span>
<span id="1168">1168</span>
<span id="1169">1169</span>
<span id="1170">1170</span>
<span id="1171">1171</span>
<span id="1172">1172</span>
<span id="1173">1173</span>
<span id="1174">1174</span>
<span id="1175">1175</span>
<span id="1176">1176</span>
<span id="1177">1177</span>
<span id="1178">1178</span>
<span id="1179">1179</span>
<span id="1180">1180</span>
<span id="1181">1181</span>
<span id="1182">1182</span>
<span id="1183">1183</span>
<span id="1184">1184</span>
<span id="1185">1185</span>
<span id="1186">1186</span>
<span id="1187">1187</span>
<span id="1188">1188</span>
<span id="1189">1189</span>
<span id="1190">1190</span>
<span id="1191">1191</span>
<span id="1192">1192</span>
<span id="1193">1193</span>
<span id="1194">1194</span>
<span id="1195">1195</span>
<span id="1196">1196</span>
<span id="1197">1197</span>
<span id="1198">1198</span>
<span id="1199">1199</span>
<span id="1200">1200</span>
<span id="1201">1201</span>
<span id="1202">1202</span>
<span id="1203">1203</span>
<span id="1204">1204</span>
<span id="1205">1205</span>
<span id="1206">1206</span>
<span id="1207">1207</span>
<span id="1208">1208</span>
<span id="1209">1209</span>
<span id="1210">1210</span>
<span id="1211">1211</span>
<span id="1212">1212</span>
<span id="1213">1213</span>
<span id="1214">1214</span>
<span id="1215">1215</span>
<span id="1216">1216</span>
<span id="1217">1217</span>
<span id="1218">1218</span>
<span id="1219">1219</span>
<span id="1220">1220</span>
<span id="1221">1221</span>
<span id="1222">1222</span>
<span id="1223">1223</span>
<span id="1224">1224</span>
<span id="1225">1225</span>
<span id="1226">1226</span>
<span id="1227">1227</span>
<span id="1228">1228</span>
<span id="1229">1229</span>
<span id="1230">1230</span>
<span id="1231">1231</span>
<span id="1232">1232</span>
<span id="1233">1233</span>
<span id="1234">1234</span>
<span id="1235">1235</span>
<span id="1236">1236</span>
<span id="1237">1237</span>
<span id="1238">1238</span>
<span id="1239">1239</span>
<span id="1240">1240</span>
<span id="1241">1241</span>
<span id="1242">1242</span>
<span id="1243">1243</span>
<span id="1244">1244</span>
<span id="1245">1245</span>
<span id="1246">1246</span>
<span id="1247">1247</span>
<span id="1248">1248</span>
<span id="1249">1249</span>
<span id="1250">1250</span>
<span id="1251">1251</span>
<span id="1252">1252</span>
<span id="1253">1253</span>
<span id="1254">1254</span>
<span id="1255">1255</span>
<span id="1256">1256</span>
<span id="1257">1257</span>
<span id="1258">1258</span>
<span id="1259">1259</span>
<span id="1260">1260</span>
<span id="1261">1261</span>
<span id="1262">1262</span>
<span id="1263">1263</span>
<span id="1264">1264</span>
<span id="1265">1265</span>
<span id="1266">1266</span>
<span id="1267">1267</span>
<span id="1268">1268</span>
<span id="1269">1269</span>
<span id="1270">1270</span>
<span id="1271">1271</span>
<span id="1272">1272</span>
<span id="1273">1273</span>
<span id="1274">1274</span>
<span id="1275">1275</span>
<span id="1276">1276</span>
<span id="1277">1277</span>
<span id="1278">1278</span>
<span id="1279">1279</span>
<span id="1280">1280</span>
<span id="1281">1281</span>
<span id="1282">1282</span>
<span id="1283">1283</span>
<span id="1284">1284</span>
<span id="1285">1285</span>
<span id="1286">1286</span>
<span id="1287">1287</span>
<span id="1288">1288</span>
<span id="1289">1289</span>
<span id="1290">1290</span>
<span id="1291">1291</span>
<span id="1292">1292</span>
<span id="1293">1293</span>
<span id="1294">1294</span>
<span id="1295">1295</span>
<span id="1296">1296</span>
<span id="1297">1297</span>
<span id="1298">1298</span>
<span id="1299">1299</span>
<span id="1300">1300</span>
<span id="1301">1301</span>
<span id="1302">1302</span>
<span id="1303">1303</span>
<span id="1304">1304</span>
<span id="1305">1305</span>
<span id="1306">1306</span>
<span id="1307">1307</span>
<span id="1308">1308</span>
<span id="1309">1309</span>
<span id="1310">1310</span>
<span id="1311">1311</span>
<span id="1312">1312</span>
<span id="1313">1313</span>
<span id="1314">1314</span>
<span id="1315">1315</span>
<span id="1316">1316</span>
<span id="1317">1317</span>
<span id="1318">1318</span>
<span id="1319">1319</span>
<span id="1320">1320</span>
<span id="1321">1321</span>
<span id="1322">1322</span>
<span id="1323">1323</span>
<span id="1324">1324</span>
<span id="1325">1325</span>
<span id="1326">1326</span>
<span id="1327">1327</span>
<span id="1328">1328</span>
<span id="1329">1329</span>
<span id="1330">1330</span>
<span id="1331">1331</span>
<span id="1332">1332</span>
<span id="1333">1333</span>
<span id="1334">1334</span>
<span id="1335">1335</span>
<span id="1336">1336</span>
<span id="1337">1337</span>
<span id="1338">1338</span>
<span id="1339">1339</span>
<span id="1340">1340</span>
<span id="1341">1341</span>
<span id="1342">1342</span>
<span id="1343">1343</span>
<span id="1344">1344</span>
<span id="1345">1345</span>
<span id="1346">1346</span>
<span id="1347">1347</span>
<span id="1348">1348</span>
<span id="1349">1349</span>
<span id="1350">1350</span>
<span id="1351">1351</span>
<span id="1352">1352</span>
<span id="1353">1353</span>
<span id="1354">1354</span>
<span id="1355">1355</span>
<span id="1356">1356</span>
<span id="1357">1357</span>
<span id="1358">1358</span>
<span id="1359">1359</span>
<span id="1360">1360</span>
<span id="1361">1361</span>
<span id="1362">1362</span>
<span id="1363">1363</span>
<span id="1364">1364</span>
<span id="1365">1365</span>
<span id="1366">1366</span>
<span id="1367">1367</span>
<span id="1368">1368</span>
<span id="1369">1369</span>
<span id="1370">1370</span>
<span id="1371">1371</span>
<span id="1372">1372</span>
<span id="1373">1373</span>
<span id="1374">1374</span>
<span id="1375">1375</span>
<span id="1376">1376</span>
<span id="1377">1377</span>
<span id="1378">1378</span>
<span id="1379">1379</span>
<span id="1380">1380</span>
<span id="1381">1381</span>
<span id="1382">1382</span>
<span id="1383">1383</span>
<span id="1384">1384</span>
<span id="1385">1385</span>
<span id="1386">1386</span>
<span id="1387">1387</span>
<span id="1388">1388</span>
<span id="1389">1389</span>
<span id="1390">1390</span>
<span id="1391">1391</span>
<span id="1392">1392</span>
<span id="1393">1393</span>
<span id="1394">1394</span>
<span id="1395">1395</span>
<span id="1396">1396</span>
<span id="1397">1397</span>
<span id="1398">1398</span>
<span id="1399">1399</span>
<span id="1400">1400</span>
<span id="1401">1401</span>
<span id="1402">1402</span>
<span id="1403">1403</span>
<span id="1404">1404</span>
<span id="1405">1405</span>
<span id="1406">1406</span>
<span id="1407">1407</span>
<span id="1408">1408</span>
<span id="1409">1409</span>
<span id="1410">1410</span>
<span id="1411">1411</span>
<span id="1412">1412</span>
<span id="1413">1413</span>
<span id="1414">1414</span>
<span id="1415">1415</span>
<span id="1416">1416</span>
<span id="1417">1417</span>
<span id="1418">1418</span>
<span id="1419">1419</span>
<span id="1420">1420</span>
<span id="1421">1421</span>
<span id="1422">1422</span>
<span id="1423">1423</span>
<span id="1424">1424</span>
<span id="1425">1425</span>
<span id="1426">1426</span>
<span id="1427">1427</span>
<span id="1428">1428</span>
<span id="1429">1429</span>
<span id="1430">1430</span>
<span id="1431">1431</span>
<span id="1432">1432</span>
<span id="1433">1433</span>
<span id="1434">1434</span>
<span id="1435">1435</span>
<span id="1436">1436</span>
<span id="1437">1437</span>
<span id="1438">1438</span>
<span id="1439">1439</span>
<span id="1440">1440</span>
<span id="1441">1441</span>
<span id="1442">1442</span>
<span id="1443">1443</span>
<span id="1444">1444</span>
<span id="1445">1445</span>
<span id="1446">1446</span>
<span id="1447">1447</span>
<span id="1448">1448</span>
<span id="1449">1449</span>
<span id="1450">1450</span>
<span id="1451">1451</span>
<span id="1452">1452</span>
<span id="1453">1453</span>
<span id="1454">1454</span>
<span id="1455">1455</span>
<span id="1456">1456</span>
<span id="1457">1457</span>
<span id="1458">1458</span>
<span id="1459">1459</span>
<span id="1460">1460</span>
<span id="1461">1461</span>
<span id="1462">1462</span>
<span id="1463">1463</span>
<span id="1464">1464</span>
<span id="1465">1465</span>
<span id="1466">1466</span>
<span id="1467">1467</span>
<span id="1468">1468</span>
<span id="1469">1469</span>
<span id="1470">1470</span>
<span id="1471">1471</span>
<span id="1472">1472</span>
<span id="1473">1473</span>
<span id="1474">1474</span>
<span id="1475">1475</span>
<span id="1476">1476</span>
<span id="1477">1477</span>
<span id="1478">1478</span>
<span id="1479">1479</span>
<span id="1480">1480</span>
<span id="1481">1481</span>
<span id="1482">1482</span>
<span id="1483">1483</span>
<span id="1484">1484</span>
<span id="1485">1485</span>
<span id="1486">1486</span>
<span id="1487">1487</span>
<span id="1488">1488</span>
<span id="1489">1489</span>
<span id="1490">1490</span>
<span id="1491">1491</span>
<span id="1492">1492</span>
<span id="1493">1493</span>
<span id="1494">1494</span>
<span id="1495">1495</span>
<span id="1496">1496</span>
<span id="1497">1497</span>
<span id="1498">1498</span>
<span id="1499">1499</span>
<span id="1500">1500</span>
<span id="1501">1501</span>
<span id="1502">1502</span>
<span id="1503">1503</span>
<span id="1504">1504</span>
<span id="1505">1505</span>
<span id="1506">1506</span>
<span id="1507">1507</span>
<span id="1508">1508</span>
<span id="1509">1509</span>
<span id="1510">1510</span>
<span id="1511">1511</span>
<span id="1512">1512</span>
<span id="1513">1513</span>
<span id="1514">1514</span>
<span id="1515">1515</span>
<span id="1516">1516</span>
<span id="1517">1517</span>
<span id="1518">1518</span>
<span id="1519">1519</span>
<span id="1520">1520</span>
<span id="1521">1521</span>
<span id="1522">1522</span>
<span id="1523">1523</span>
<span id="1524">1524</span>
<span id="1525">1525</span>
<span id="1526">1526</span>
<span id="1527">1527</span>
<span id="1528">1528</span>
<span id="1529">1529</span>
<span id="1530">1530</span>
<span id="1531">1531</span>
<span id="1532">1532</span>
<span id="1533">1533</span>
<span id="1534">1534</span>
<span id="1535">1535</span>
<span id="1536">1536</span>
<span id="1537">1537</span>
<span id="1538">1538</span>
<span id="1539">1539</span>
<span id="1540">1540</span>
<span id="1541">1541</span>
<span id="1542">1542</span>
<span id="1543">1543</span>
<span id="1544">1544</span>
<span id="1545">1545</span>
<span id="1546">1546</span>
<span id="1547">1547</span>
<span id="1548">1548</span>
<span id="1549">1549</span>
<span id="1550">1550</span>
<span id="1551">1551</span>
<span id="1552">1552</span>
<span id="1553">1553</span>
<span id="1554">1554</span>
<span id="1555">1555</span>
<span id="1556">1556</span>
<span id="1557">1557</span>
<span id="1558">1558</span>
<span id="1559">1559</span>
<span id="1560">1560</span>
<span id="1561">1561</span>
<span id="1562">1562</span>
<span id="1563">1563</span>
<span id="1564">1564</span>
<span id="1565">1565</span>
<span id="1566">1566</span>
<span id="1567">1567</span>
<span id="1568">1568</span>
<span id="1569">1569</span>
<span id="1570">1570</span>
<span id="1571">1571</span>
<span id="1572">1572</span>
<span id="1573">1573</span>
<span id="1574">1574</span>
<span id="1575">1575</span>
<span id="1576">1576</span>
<span id="1577">1577</span>
<span id="1578">1578</span>
<span id="1579">1579</span>
<span id="1580">1580</span>
<span id="1581">1581</span>
<span id="1582">1582</span>
<span id="1583">1583</span>
<span id="1584">1584</span>
<span id="1585">1585</span>
<span id="1586">1586</span>
<span id="1587">1587</span>
<span id="1588">1588</span>
<span id="1589">1589</span>
<span id="1590">1590</span>
<span id="1591">1591</span>
<span id="1592">1592</span>
<span id="1593">1593</span>
<span id="1594">1594</span>
<span id="1595">1595</span>
<span id="1596">1596</span>
<span id="1597">1597</span>
<span id="1598">1598</span>
<span id="1599">1599</span>
<span id="1600">1600</span>
</pre><pre class="rust ">
<span class="comment">// Copyright 2014 The Rust Project Developers. See the COPYRIGHT</span>
<span class="comment">// file at the top-level directory of this distribution and at</span>
<span class="comment">// http://rust-lang.org/COPYRIGHT.</span>
<span class="comment">//</span>
<span class="comment">// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or</span>
<span class="comment">// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license</span>
<span class="comment">// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your</span>
<span class="comment">// option. This file may not be copied, modified, or distributed</span>
<span class="comment">// except according to those terms.</span>
<span class="doccomment">//! Native threads.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ## The threading model</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! An executing Rust program consists of a collection of native OS threads,</span>
<span class="doccomment">//! each with their own stack and local state. Threads can be named, and</span>
<span class="doccomment">//! provide some built-in support for low-level synchronization.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! Communication between threads can be done through</span>
<span class="doccomment">//! [channels], Rust's message-passing types, along with [other forms of thread</span>
<span class="doccomment">//! synchronization](../../std/sync/index.html) and shared-memory data</span>
<span class="doccomment">//! structures. In particular, types that are guaranteed to be</span>
<span class="doccomment">//! threadsafe are easily shared between threads using the</span>
<span class="doccomment">//! atomically-reference-counted container, [`Arc`].</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! Fatal logic errors in Rust cause *thread panic*, during which</span>
<span class="doccomment">//! a thread will unwind the stack, running destructors and freeing</span>
<span class="doccomment">//! owned resources. While not meant as a 'try/catch' mechanism, panics</span>
<span class="doccomment">//! in Rust can nonetheless be caught (unless compiling with `panic=abort`) with</span>
<span class="doccomment">//! [`catch_unwind`](../../std/panic/fn.catch_unwind.html) and recovered</span>
<span class="doccomment">//! from, or alternatively be resumed with</span>
<span class="doccomment">//! [`resume_unwind`](../../std/panic/fn.resume_unwind.html). If the panic</span>
<span class="doccomment">//! is not caught the thread will exit, but the panic may optionally be</span>
<span class="doccomment">//! detected from a different thread with [`join`]. If the main thread panics</span>
<span class="doccomment">//! without the panic being caught, the application will exit with a</span>
<span class="doccomment">//! non-zero exit code.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! When the main thread of a Rust program terminates, the entire program shuts</span>
<span class="doccomment">//! down, even if other threads are still running. However, this module provides</span>
<span class="doccomment">//! convenient facilities for automatically waiting for the termination of a</span>
<span class="doccomment">//! child thread (i.e., join).</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ## Spawning a thread</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! A new thread can be spawned using the [`thread::spawn`][`spawn`] function:</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ```rust</span>
<span class="doccomment">//! use std::thread;</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! thread::spawn(move || {</span>
<span class="doccomment">//! // some work here</span>
<span class="doccomment">//! });</span>
<span class="doccomment">//! ```</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! In this example, the spawned thread is "detached" from the current</span>
<span class="doccomment">//! thread. This means that it can outlive its parent (the thread that spawned</span>
<span class="doccomment">//! it), unless this parent is the main thread.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! The parent thread can also wait on the completion of the child</span>
<span class="doccomment">//! thread; a call to [`spawn`] produces a [`JoinHandle`], which provides</span>
<span class="doccomment">//! a `join` method for waiting:</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ```rust</span>
<span class="doccomment">//! use std::thread;</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! let child = thread::spawn(move || {</span>
<span class="doccomment">//! // some work here</span>
<span class="doccomment">//! });</span>
<span class="doccomment">//! // some work here</span>
<span class="doccomment">//! let res = child.join();</span>
<span class="doccomment">//! ```</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! The [`join`] method returns a [`thread::Result`] containing [`Ok`] of the final</span>
<span class="doccomment">//! value produced by the child thread, or [`Err`] of the value given to</span>
<span class="doccomment">//! a call to [`panic!`] if the child panicked.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ## Configuring threads</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! A new thread can be configured before it is spawned via the [`Builder`] type,</span>
<span class="doccomment">//! which currently allows you to set the name and stack size for the child thread:</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ```rust</span>
<span class="doccomment">//! # #![allow(unused_must_use)]</span>
<span class="doccomment">//! use std::thread;</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! thread::Builder::new().name("child1".to_string()).spawn(move || {</span>
<span class="doccomment">//! println!("Hello, world!");</span>
<span class="doccomment">//! });</span>
<span class="doccomment">//! ```</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ## The `Thread` type</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! Threads are represented via the [`Thread`] type, which you can get in one of</span>
<span class="doccomment">//! two ways:</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! * By spawning a new thread, e.g. using the [`thread::spawn`][`spawn`]</span>
<span class="doccomment">//! function, and calling [`thread`][`JoinHandle::thread`] on the [`JoinHandle`].</span>
<span class="doccomment">//! * By requesting the current thread, using the [`thread::current`] function.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! The [`thread::current`] function is available even for threads not spawned</span>
<span class="doccomment">//! by the APIs of this module.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ## Thread-local storage</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! This module also provides an implementation of thread-local storage for Rust</span>
<span class="doccomment">//! programs. Thread-local storage is a method of storing data into a global</span>
<span class="doccomment">//! variable that each thread in the program will have its own copy of.</span>
<span class="doccomment">//! Threads do not share this data, so accesses do not need to be synchronized.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! A thread-local key owns the value it contains and will destroy the value when the</span>
<span class="doccomment">//! thread exits. It is created with the [`thread_local!`] macro and can contain any</span>
<span class="doccomment">//! value that is `'static` (no borrowed pointers). It provides an accessor function,</span>
<span class="doccomment">//! [`with`], that yields a shared reference to the value to the specified</span>
<span class="doccomment">//! closure. Thread-local keys allow only shared access to values, as there would be no</span>
<span class="doccomment">//! way to guarantee uniqueness if mutable borrows were allowed. Most values</span>
<span class="doccomment">//! will want to make use of some form of **interior mutability** through the</span>
<span class="doccomment">//! [`Cell`] or [`RefCell`] types.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ## Naming threads</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! Threads are able to have associated names for identification purposes. By default, spawned</span>
<span class="doccomment">//! threads are unnamed. To specify a name for a thread, build the thread with [`Builder`] and pass</span>
<span class="doccomment">//! the desired thread name to [`Builder::name`]. To retrieve the thread name from within the</span>
<span class="doccomment">//! thread, use [`Thread::name`]. A couple examples of where the name of a thread gets used:</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! * If a panic occurs in a named thread, the thread name will be printed in the panic message.</span>
<span class="doccomment">//! * The thread name is provided to the OS where applicable (e.g. `pthread_setname_np` in</span>
<span class="doccomment">//! unix-like platforms).</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ## Stack size</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! The default stack size for spawned threads is 2 MiB, though this particular stack size is</span>
<span class="doccomment">//! subject to change in the future. There are two ways to manually specify the stack size for</span>
<span class="doccomment">//! spawned threads:</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! * Build the thread with [`Builder`] and pass the desired stack size to [`Builder::stack_size`].</span>
<span class="doccomment">//! * Set the `RUST_MIN_STACK` environment variable to an integer representing the desired stack</span>
<span class="doccomment">//! size (in bytes). Note that setting [`Builder::stack_size`] will override this.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! Note that the stack size of the main thread is *not* determined by Rust.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! [channels]: ../../std/sync/mpsc/index.html</span>
<span class="doccomment">//! [`Arc`]: ../../std/sync/struct.Arc.html</span>
<span class="doccomment">//! [`spawn`]: ../../std/thread/fn.spawn.html</span>
<span class="doccomment">//! [`JoinHandle`]: ../../std/thread/struct.JoinHandle.html</span>
<span class="doccomment">//! [`JoinHandle::thread`]: ../../std/thread/struct.JoinHandle.html#method.thread</span>
<span class="doccomment">//! [`join`]: ../../std/thread/struct.JoinHandle.html#method.join</span>
<span class="doccomment">//! [`Result`]: ../../std/result/enum.Result.html</span>
<span class="doccomment">//! [`Ok`]: ../../std/result/enum.Result.html#variant.Ok</span>
<span class="doccomment">//! [`Err`]: ../../std/result/enum.Result.html#variant.Err</span>
<span class="doccomment">//! [`panic!`]: ../../std/macro.panic.html</span>
<span class="doccomment">//! [`Builder`]: ../../std/thread/struct.Builder.html</span>
<span class="doccomment">//! [`Builder::stack_size`]: ../../std/thread/struct.Builder.html#method.stack_size</span>
<span class="doccomment">//! [`Builder::name`]: ../../std/thread/struct.Builder.html#method.name</span>
<span class="doccomment">//! [`thread::current`]: ../../std/thread/fn.current.html</span>
<span class="doccomment">//! [`thread::Result`]: ../../std/thread/type.Result.html</span>
<span class="doccomment">//! [`Thread`]: ../../std/thread/struct.Thread.html</span>
<span class="doccomment">//! [`park`]: ../../std/thread/fn.park.html</span>
<span class="doccomment">//! [`unpark`]: ../../std/thread/struct.Thread.html#method.unpark</span>
<span class="doccomment">//! [`Thread::name`]: ../../std/thread/struct.Thread.html#method.name</span>
<span class="doccomment">//! [`thread::park_timeout`]: ../../std/thread/fn.park_timeout.html</span>
<span class="doccomment">//! [`Cell`]: ../cell/struct.Cell.html</span>
<span class="doccomment">//! [`RefCell`]: ../cell/struct.RefCell.html</span>
<span class="doccomment">//! [`thread_local!`]: ../macro.thread_local.html</span>
<span class="doccomment">//! [`with`]: struct.LocalKey.html#method.with</span>
<span class="attribute">#![<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">use</span> <span class="ident">any</span>::<span class="ident">Any</span>;
<span class="kw">use</span> <span class="ident">cell</span>::<span class="ident">UnsafeCell</span>;
<span class="kw">use</span> <span class="ident">ffi</span>::{<span class="ident">CStr</span>, <span class="ident">CString</span>};
<span class="kw">use</span> <span class="ident">fmt</span>;
<span class="kw">use</span> <span class="ident">io</span>;
<span class="kw">use</span> <span class="ident">panic</span>;
<span class="kw">use</span> <span class="ident">panicking</span>;
<span class="kw">use</span> <span class="ident">str</span>;
<span class="kw">use</span> <span class="ident">sync</span>::{<span class="ident">Mutex</span>, <span class="ident">Condvar</span>, <span class="ident">Arc</span>};
<span class="kw">use</span> <span class="ident">sync</span>::<span class="ident">atomic</span>::<span class="ident">AtomicUsize</span>;
<span class="kw">use</span> <span class="ident">sync</span>::<span class="ident">atomic</span>::<span class="ident">Ordering</span>::<span class="ident">SeqCst</span>;
<span class="kw">use</span> <span class="ident">sys</span>::<span class="ident">thread</span> <span class="kw">as</span> <span class="ident">imp</span>;
<span class="kw">use</span> <span class="ident">sys_common</span>::<span class="ident">mutex</span>;
<span class="kw">use</span> <span class="ident">sys_common</span>::<span class="ident">thread_info</span>;
<span class="kw">use</span> <span class="ident">sys_common</span>::<span class="ident">thread</span>;
<span class="kw">use</span> <span class="ident">sys_common</span>::{<span class="ident">AsInner</span>, <span class="ident">IntoInner</span>};
<span class="kw">use</span> <span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="comment">////////////////////////////////////////////////////////////////////////////////</span>
<span class="comment">// Thread-local storage</span>
<span class="comment">////////////////////////////////////////////////////////////////////////////////</span>
<span class="attribute">#[<span class="ident">macro_use</span>]</span> <span class="kw">mod</span> <span class="ident">local</span>;
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">use</span> <span class="self">self</span>::<span class="ident">local</span>::{<span class="ident">LocalKey</span>, <span class="ident">LocalKeyState</span>, <span class="ident">AccessError</span>};
<span class="comment">// The types used by the thread_local! macro to access TLS keys. Note that there</span>
<span class="comment">// are two types, the "OS" type and the "fast" type. The OS thread local key</span>
<span class="comment">// type is accessed via platform-specific API calls and is slow, while the fast</span>
<span class="comment">// key type is accessed via code generated via LLVM, where TLS keys are set up</span>
<span class="comment">// by the elf linker. Note that the OS TLS type is always available: on macOS</span>
<span class="comment">// the standard library is compiled with support for older platform versions</span>
<span class="comment">// where fast TLS was not available; end-user code is compiled with fast TLS</span>
<span class="comment">// where available, but both are needed.</span>
<span class="attribute">#[<span class="ident">unstable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"libstd_thread_internals"</span>, <span class="ident">issue</span> <span class="op">=</span> <span class="string">"0"</span>)]</span>
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">target_thread_local</span>)]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="self">self</span>::<span class="ident">local</span>::<span class="ident">fast</span>::<span class="ident">Key</span> <span class="kw">as</span> <span class="ident">__FastLocalKeyInner</span>;
<span class="attribute">#[<span class="ident">unstable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"libstd_thread_internals"</span>, <span class="ident">issue</span> <span class="op">=</span> <span class="string">"0"</span>)]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="self">self</span>::<span class="ident">local</span>::<span class="ident">os</span>::<span class="ident">Key</span> <span class="kw">as</span> <span class="ident">__OsLocalKeyInner</span>;
<span class="comment">////////////////////////////////////////////////////////////////////////////////</span>
<span class="comment">// Builder</span>
<span class="comment">////////////////////////////////////////////////////////////////////////////////</span>
<span class="doccomment">/// Thread factory, which can be used in order to configure the properties of</span>
<span class="doccomment">/// a new thread.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Methods can be chained on it in order to configure it.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The two configurations available are:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// - [`name`]: specifies an [associated name for the thread][naming-threads]</span>
<span class="doccomment">/// - [`stack_size`]: specifies the [desired stack size for the thread][stack-size]</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The [`spawn`] method will take ownership of the builder and create an</span>
<span class="doccomment">/// [`io::Result`] to the thread handle with the given configuration.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The [`thread::spawn`] free function uses a `Builder` with default</span>
<span class="doccomment">/// configuration and [`unwrap`]s its return value.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// You may want to use [`spawn`] instead of [`thread::spawn`], when you want</span>
<span class="doccomment">/// to recover from a failure to launch a thread, indeed the free function will</span>
<span class="doccomment">/// panick where the `Builder` method will return a [`io::Result`].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let builder = thread::Builder::new();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let handler = builder.spawn(|| {</span>
<span class="doccomment">/// // thread code</span>
<span class="doccomment">/// }).unwrap();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// handler.join().unwrap();</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`thread::spawn`]: ../../std/thread/fn.spawn.html</span>
<span class="doccomment">/// [`stack_size`]: ../../std/thread/struct.Builder.html#method.stack_size</span>
<span class="doccomment">/// [`name`]: ../../std/thread/struct.Builder.html#method.name</span>
<span class="doccomment">/// [`spawn`]: ../../std/thread/struct.Builder.html#method.spawn</span>
<span class="doccomment">/// [`io::Result`]: ../../std/io/type.Result.html</span>
<span class="doccomment">/// [`unwrap`]: ../../std/result/enum.Result.html#method.unwrap</span>
<span class="doccomment">/// [naming-threads]: ./index.html#naming-threads</span>
<span class="doccomment">/// [stack-size]: ./index.html#stack-size</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Builder</span> {
<span class="comment">// A name for the thread-to-be, for identification in panic messages</span>
<span class="ident">name</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>,
<span class="comment">// The size of the stack for the spawned thread in bytes</span>
<span class="ident">stack_size</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span>,
}
<span class="kw">impl</span> <span class="ident">Builder</span> {
<span class="doccomment">/// Generates the base configuration for spawning a thread, from which</span>
<span class="doccomment">/// configuration methods can be chained.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let builder = thread::Builder::new()</span>
<span class="doccomment">/// .name("foo".into())</span>
<span class="doccomment">/// .stack_size(10);</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let handler = builder.spawn(|| {</span>
<span class="doccomment">/// // thread code</span>
<span class="doccomment">/// }).unwrap();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// handler.join().unwrap();</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>() <span class="op">-></span> <span class="ident">Builder</span> {
<span class="ident">Builder</span> {
<span class="ident">name</span>: <span class="prelude-val">None</span>,
<span class="ident">stack_size</span>: <span class="prelude-val">None</span>,
}
}
<span class="doccomment">/// Names the thread-to-be. Currently the name is used for identification</span>
<span class="doccomment">/// only in panic messages.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The name must not contain null bytes (`\0`).</span>
<span class="doccomment">///</span>
<span class="doccomment">/// For more information about named threads, see</span>
<span class="doccomment">/// [this module-level documentation][naming-threads].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let builder = thread::Builder::new()</span>
<span class="doccomment">/// .name("foo".into());</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let handler = builder.spawn(|| {</span>
<span class="doccomment">/// assert_eq!(thread::current().name(), Some("foo"))</span>
<span class="doccomment">/// }).unwrap();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// handler.join().unwrap();</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [naming-threads]: ./index.html#naming-threads</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">name</span>(<span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">name</span>: <span class="ident">String</span>) <span class="op">-></span> <span class="ident">Builder</span> {
<span class="self">self</span>.<span class="ident">name</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">name</span>);
<span class="self">self</span>
}
<span class="doccomment">/// Sets the size of the stack (in bytes) for the new thread.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The actual stack size may be greater than this value if</span>
<span class="doccomment">/// the platform specifies minimal stack size.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// For more information about the stack size for threads, see</span>
<span class="doccomment">/// [this module-level documentation][stack-size].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let builder = thread::Builder::new().stack_size(32 * 1024);</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [stack-size]: ./index.html#stack-size</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">stack_size</span>(<span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">size</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="ident">Builder</span> {
<span class="self">self</span>.<span class="ident">stack_size</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">size</span>);
<span class="self">self</span>
}
<span class="doccomment">/// Spawns a new thread by taking ownership of the `Builder`, and returns an</span>
<span class="doccomment">/// [`io::Result`] to its [`JoinHandle`].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The spawned thread may outlive the caller (unless the caller thread</span>
<span class="doccomment">/// is the main thread; the whole process is terminated when the main</span>
<span class="doccomment">/// thread finishes). The join handle can be used to block on</span>
<span class="doccomment">/// termination of the child thread, including recovering its panics.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// For a more complete documentation see [`thread::spawn`][`spawn`].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Errors</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Unlike the [`spawn`] free function, this method yields an</span>
<span class="doccomment">/// [`io::Result`] to capture any failure to create the thread at</span>
<span class="doccomment">/// the OS level.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`spawn`]: ../../std/thread/fn.spawn.html</span>
<span class="doccomment">/// [`io::Result`]: ../../std/io/type.Result.html</span>
<span class="doccomment">/// [`JoinHandle`]: ../../std/thread/struct.JoinHandle.html</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Panics</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Panics if a thread name was set and it contained null bytes.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let builder = thread::Builder::new();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let handler = builder.spawn(|| {</span>
<span class="doccomment">/// // thread code</span>
<span class="doccomment">/// }).unwrap();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// handler.join().unwrap();</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">spawn</span><span class="op"><</span><span class="ident">F</span>, <span class="ident">T</span><span class="op">></span>(<span class="self">self</span>, <span class="ident">f</span>: <span class="ident">F</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">JoinHandle</span><span class="op"><</span><span class="ident">T</span><span class="op">>></span> <span class="kw">where</span>
<span class="ident">F</span>: <span class="ident">FnOnce</span>() <span class="op">-></span> <span class="ident">T</span>, <span class="ident">F</span>: <span class="ident">Send</span> <span class="op">+</span> <span class="lifetime">'static</span>, <span class="ident">T</span>: <span class="ident">Send</span> <span class="op">+</span> <span class="lifetime">'static</span>
{
<span class="kw">let</span> <span class="ident">Builder</span> { <span class="ident">name</span>, <span class="ident">stack_size</span> } <span class="op">=</span> <span class="self">self</span>;
<span class="kw">let</span> <span class="ident">stack_size</span> <span class="op">=</span> <span class="ident">stack_size</span>.<span class="ident">unwrap_or_else</span>(<span class="ident">thread</span>::<span class="ident">min_stack</span>);
<span class="kw">let</span> <span class="ident">my_thread</span> <span class="op">=</span> <span class="ident">Thread</span>::<span class="ident">new</span>(<span class="ident">name</span>);
<span class="kw">let</span> <span class="ident">their_thread</span> <span class="op">=</span> <span class="ident">my_thread</span>.<span class="ident">clone</span>();
<span class="kw">let</span> <span class="ident">my_packet</span> : <span class="ident">Arc</span><span class="op"><</span><span class="ident">UnsafeCell</span><span class="op"><</span><span class="prelude-ty">Option</span><span class="op"><</span><span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">T</span><span class="op">>></span><span class="op">>></span>
<span class="op">=</span> <span class="ident">Arc</span>::<span class="ident">new</span>(<span class="ident">UnsafeCell</span>::<span class="ident">new</span>(<span class="prelude-val">None</span>));
<span class="kw">let</span> <span class="ident">their_packet</span> <span class="op">=</span> <span class="ident">my_packet</span>.<span class="ident">clone</span>();
<span class="kw">let</span> <span class="ident">main</span> <span class="op">=</span> <span class="kw">move</span> <span class="op">||</span> {
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">name</span>) <span class="op">=</span> <span class="ident">their_thread</span>.<span class="ident">cname</span>() {
<span class="ident">imp</span>::<span class="ident">Thread</span>::<span class="ident">set_name</span>(<span class="ident">name</span>);
}
<span class="kw">unsafe</span> {
<span class="ident">thread_info</span>::<span class="ident">set</span>(<span class="ident">imp</span>::<span class="ident">guard</span>::<span class="ident">current</span>(), <span class="ident">their_thread</span>);
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"backtrace"</span>)]</span>
<span class="kw">let</span> <span class="ident">try_result</span> <span class="op">=</span> <span class="ident">panic</span>::<span class="ident">catch_unwind</span>(<span class="ident">panic</span>::<span class="ident">AssertUnwindSafe</span>(<span class="op">||</span> {
::<span class="ident">sys_common</span>::<span class="ident">backtrace</span>::<span class="ident">__rust_begin_short_backtrace</span>(<span class="ident">f</span>)
}));
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"backtrace"</span>))]</span>
<span class="kw">let</span> <span class="ident">try_result</span> <span class="op">=</span> <span class="ident">panic</span>::<span class="ident">catch_unwind</span>(<span class="ident">panic</span>::<span class="ident">AssertUnwindSafe</span>(<span class="ident">f</span>));
<span class="kw-2">*</span><span class="ident">their_packet</span>.<span class="ident">get</span>() <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">try_result</span>);
}
};
<span class="prelude-val">Ok</span>(<span class="ident">JoinHandle</span>(<span class="ident">JoinInner</span> {
<span class="ident">native</span>: <span class="kw">unsafe</span> {
<span class="prelude-val">Some</span>(<span class="ident">imp</span>::<span class="ident">Thread</span>::<span class="ident">new</span>(<span class="ident">stack_size</span>, <span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">main</span>))<span class="question-mark">?</span>)
},
<span class="ident">thread</span>: <span class="ident">my_thread</span>,
<span class="ident">packet</span>: <span class="ident">Packet</span>(<span class="ident">my_packet</span>),
}))
}
}
<span class="comment">////////////////////////////////////////////////////////////////////////////////</span>
<span class="comment">// Free functions</span>
<span class="comment">////////////////////////////////////////////////////////////////////////////////</span>
<span class="doccomment">/// Spawns a new thread, returning a [`JoinHandle`] for it.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The join handle will implicitly *detach* the child thread upon being</span>
<span class="doccomment">/// dropped. In this case, the child thread may outlive the parent (unless</span>
<span class="doccomment">/// the parent thread is the main thread; the whole process is terminated when</span>
<span class="doccomment">/// the main thread finishes). Additionally, the join handle provides a [`join`]</span>
<span class="doccomment">/// method that can be used to join the child thread. If the child thread</span>
<span class="doccomment">/// panics, [`join`] will return an [`Err`] containing the argument given to</span>
<span class="doccomment">/// [`panic`].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This will create a thread using default parameters of [`Builder`], if you</span>
<span class="doccomment">/// want to specify the stack size or the name of the thread, use this API</span>
<span class="doccomment">/// instead.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// As you can see in the signature of `spawn` there are two constraints on</span>
<span class="doccomment">/// both the closure given to `spawn` and its return value, let's explain them:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// - The `'static` constraint means that the closure and its return value</span>
<span class="doccomment">/// must have a lifetime of the whole program execution. The reason for this</span>
<span class="doccomment">/// is that threads can `detach` and outlive the lifetime they have been</span>
<span class="doccomment">/// created in.</span>
<span class="doccomment">/// Indeed if the thread, and by extension its return value, can outlive their</span>
<span class="doccomment">/// caller, we need to make sure that they will be valid afterwards, and since</span>
<span class="doccomment">/// we *can't* know when it will return we need to have them valid as long as</span>
<span class="doccomment">/// possible, that is until the end of the program, hence the `'static`</span>
<span class="doccomment">/// lifetime.</span>
<span class="doccomment">/// - The [`Send`] constraint is because the closure will need to be passed</span>
<span class="doccomment">/// *by value* from the thread where it is spawned to the new thread. Its</span>
<span class="doccomment">/// return value will need to be passed from the new thread to the thread</span>
<span class="doccomment">/// where it is `join`ed.</span>
<span class="doccomment">/// As a reminder, the [`Send`] marker trait expresses that it is safe to be</span>
<span class="doccomment">/// passed from thread to thread. [`Sync`] expresses that it is safe to have a</span>
<span class="doccomment">/// reference be passed from thread to thread.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Panics</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Panics if the OS fails to create a thread; use [`Builder::spawn`]</span>
<span class="doccomment">/// to recover from such errors.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Creating a thread.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let handler = thread::spawn(|| {</span>
<span class="doccomment">/// // thread code</span>
<span class="doccomment">/// });</span>
<span class="doccomment">///</span>
<span class="doccomment">/// handler.join().unwrap();</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// As mentioned in the module documentation, threads are usually made to</span>
<span class="doccomment">/// communicate using [`channels`], here is how it usually looks.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This example also shows how to use `move`, in order to give ownership</span>
<span class="doccomment">/// of values to a thread.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">/// use std::sync::mpsc::channel;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let (tx, rx) = channel();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let sender = thread::spawn(move || {</span>
<span class="doccomment">/// tx.send("Hello, thread".to_owned())</span>
<span class="doccomment">/// .expect("Unable to send on channel");</span>
<span class="doccomment">/// });</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let receiver = thread::spawn(move || {</span>
<span class="doccomment">/// let value = rx.recv().expect("Unable to receive from channel");</span>
<span class="doccomment">/// println!("{}", value);</span>
<span class="doccomment">/// });</span>
<span class="doccomment">///</span>
<span class="doccomment">/// sender.join().expect("The sender thread has panicked");</span>
<span class="doccomment">/// receiver.join().expect("The receiver thread has panicked");</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// A thread can also return a value through its [`JoinHandle`], you can use</span>
<span class="doccomment">/// this to make asynchronous computations (futures might be more appropriate</span>
<span class="doccomment">/// though).</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let computation = thread::spawn(|| {</span>
<span class="doccomment">/// // Some expensive computation.</span>
<span class="doccomment">/// 42</span>
<span class="doccomment">/// });</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let result = computation.join().unwrap();</span>
<span class="doccomment">/// println!("{}", result);</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`channels`]: ../../std/sync/mpsc/index.html</span>
<span class="doccomment">/// [`JoinHandle`]: ../../std/thread/struct.JoinHandle.html</span>
<span class="doccomment">/// [`join`]: ../../std/thread/struct.JoinHandle.html#method.join</span>
<span class="doccomment">/// [`Err`]: ../../std/result/enum.Result.html#variant.Err</span>
<span class="doccomment">/// [`panic`]: ../../std/macro.panic.html</span>
<span class="doccomment">/// [`Builder::spawn`]: ../../std/thread/struct.Builder.html#method.spawn</span>
<span class="doccomment">/// [`Builder`]: ../../std/thread/struct.Builder.html</span>
<span class="doccomment">/// [`Send`]: ../../std/marker/trait.Send.html</span>
<span class="doccomment">/// [`Sync`]: ../../std/marker/trait.Sync.html</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">spawn</span><span class="op"><</span><span class="ident">F</span>, <span class="ident">T</span><span class="op">></span>(<span class="ident">f</span>: <span class="ident">F</span>) <span class="op">-></span> <span class="ident">JoinHandle</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="kw">where</span>
<span class="ident">F</span>: <span class="ident">FnOnce</span>() <span class="op">-></span> <span class="ident">T</span>, <span class="ident">F</span>: <span class="ident">Send</span> <span class="op">+</span> <span class="lifetime">'static</span>, <span class="ident">T</span>: <span class="ident">Send</span> <span class="op">+</span> <span class="lifetime">'static</span>
{
<span class="ident">Builder</span>::<span class="ident">new</span>().<span class="ident">spawn</span>(<span class="ident">f</span>).<span class="ident">unwrap</span>()
}
<span class="doccomment">/// Gets a handle to the thread that invokes it.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Getting a handle to the current thread with `thread::current()`:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let handler = thread::Builder::new()</span>
<span class="doccomment">/// .name("named thread".into())</span>
<span class="doccomment">/// .spawn(|| {</span>
<span class="doccomment">/// let handle = thread::current();</span>
<span class="doccomment">/// assert_eq!(handle.name(), Some("named thread"));</span>
<span class="doccomment">/// })</span>
<span class="doccomment">/// .unwrap();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// handler.join().unwrap();</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">current</span>() <span class="op">-></span> <span class="ident">Thread</span> {
<span class="ident">thread_info</span>::<span class="ident">current_thread</span>().<span class="ident">expect</span>(<span class="string">"use of std::thread::current() is not \
possible after the thread's local \
data has been destroyed"</span>)
}
<span class="doccomment">/// Cooperatively gives up a timeslice to the OS scheduler.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This is used when the programmer knows that the thread will have nothing</span>
<span class="doccomment">/// to do for some time, and thus avoid wasting computing time.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// For example when polling on a resource, it is common to check that it is</span>
<span class="doccomment">/// available, and if not to yield in order to avoid busy waiting.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Thus the pattern of `yield`ing after a failed poll is rather common when</span>
<span class="doccomment">/// implementing low-level shared resources or synchronization primitives.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// However programmers will usually prefer to use, [`channel`]s, [`Condvar`]s,</span>
<span class="doccomment">/// [`Mutex`]es or [`join`] for their synchronization routines, as they avoid</span>
<span class="doccomment">/// thinking about thread scheduling.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Note that [`channel`]s for example are implemented using this primitive.</span>
<span class="doccomment">/// Indeed when you call `send` or `recv`, which are blocking, they will yield</span>
<span class="doccomment">/// if the channel is not available.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// thread::yield_now();</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`channel`]: ../../std/sync/mpsc/index.html</span>
<span class="doccomment">/// [`spawn`]: ../../std/thread/fn.spawn.html</span>
<span class="doccomment">/// [`join`]: ../../std/thread/struct.JoinHandle.html#method.join</span>
<span class="doccomment">/// [`Mutex`]: ../../std/sync/struct.Mutex.html</span>
<span class="doccomment">/// [`Condvar`]: ../../std/sync/struct.Condvar.html</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">yield_now</span>() {
<span class="ident">imp</span>::<span class="ident">Thread</span>::<span class="ident">yield_now</span>()
}
<span class="doccomment">/// Determines whether the current thread is unwinding because of panic.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// A common use of this feature is to poison shared resources when writing</span>
<span class="doccomment">/// unsafe code, by checking `panicking` when the `drop` is called.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This is usually not needed when writing safe code, as [`Mutex`es][Mutex]</span>
<span class="doccomment">/// already poison themselves when a thread panics while holding the lock.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This can also be used in multithreaded applications, in order to send a</span>
<span class="doccomment">/// message to other threads warning that a thread has panicked (e.g. for</span>
<span class="doccomment">/// monitoring purposes).</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```should_panic</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// struct SomeStruct;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// impl Drop for SomeStruct {</span>
<span class="doccomment">/// fn drop(&mut self) {</span>
<span class="doccomment">/// if thread::panicking() {</span>
<span class="doccomment">/// println!("dropped while unwinding");</span>
<span class="doccomment">/// } else {</span>
<span class="doccomment">/// println!("dropped while not unwinding");</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// }</span>
<span class="doccomment">///</span>
<span class="doccomment">/// {</span>
<span class="doccomment">/// print!("a: ");</span>
<span class="doccomment">/// let a = SomeStruct;</span>
<span class="doccomment">/// }</span>
<span class="doccomment">///</span>
<span class="doccomment">/// {</span>
<span class="doccomment">/// print!("b: ");</span>
<span class="doccomment">/// let b = SomeStruct;</span>
<span class="doccomment">/// panic!()</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [Mutex]: ../../std/sync/struct.Mutex.html</span>
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">panicking</span>() <span class="op">-></span> <span class="ident">bool</span> {
<span class="ident">panicking</span>::<span class="ident">panicking</span>()
}
<span class="doccomment">/// Puts the current thread to sleep for the specified amount of time.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The thread may sleep longer than the duration specified due to scheduling</span>
<span class="doccomment">/// specifics or platform-dependent functionality.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Platform behavior</span>
<span class="doccomment">///</span>
<span class="doccomment">/// On Unix platforms this function will not return early due to a</span>
<span class="doccomment">/// signal being received or a spurious wakeup.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// // Let's sleep for 2 seconds:</span>
<span class="doccomment">/// thread::sleep_ms(2000);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="attribute">#[<span class="ident">rustc_deprecated</span>(<span class="ident">since</span> <span class="op">=</span> <span class="string">"1.6.0"</span>, <span class="ident">reason</span> <span class="op">=</span> <span class="string">"replaced by `std::thread::sleep`"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">sleep_ms</span>(<span class="ident">ms</span>: <span class="ident">u32</span>) {
<span class="ident">sleep</span>(<span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="ident">ms</span> <span class="kw">as</span> <span class="ident">u64</span>))
}
<span class="doccomment">/// Puts the current thread to sleep for the specified amount of time.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The thread may sleep longer than the duration specified due to scheduling</span>
<span class="doccomment">/// specifics or platform-dependent functionality.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Platform behavior</span>
<span class="doccomment">///</span>
<span class="doccomment">/// On Unix platforms this function will not return early due to a</span>
<span class="doccomment">/// signal being received or a spurious wakeup. Platforms which do not support</span>
<span class="doccomment">/// nanosecond precision for sleeping will have `dur` rounded up to the nearest</span>
<span class="doccomment">/// granularity of time they can sleep for.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::{thread, time};</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let ten_millis = time::Duration::from_millis(10);</span>
<span class="doccomment">/// let now = time::Instant::now();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// thread::sleep(ten_millis);</span>
<span class="doccomment">///</span>
<span class="doccomment">/// assert!(now.elapsed() >= ten_millis);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"thread_sleep"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.4.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">sleep</span>(<span class="ident">dur</span>: <span class="ident">Duration</span>) {
<span class="ident">imp</span>::<span class="ident">Thread</span>::<span class="ident">sleep</span>(<span class="ident">dur</span>)
}
<span class="comment">// constants for park/unpark</span>
<span class="kw">const</span> <span class="ident">EMPTY</span>: <span class="ident">usize</span> <span class="op">=</span> <span class="number">0</span>;
<span class="kw">const</span> <span class="ident">PARKED</span>: <span class="ident">usize</span> <span class="op">=</span> <span class="number">1</span>;
<span class="kw">const</span> <span class="ident">NOTIFIED</span>: <span class="ident">usize</span> <span class="op">=</span> <span class="number">2</span>;
<span class="doccomment">/// Blocks unless or until the current thread's token is made available.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// A call to `park` does not guarantee that the thread will remain parked</span>
<span class="doccomment">/// forever, and callers should be prepared for this possibility.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # park and unpark</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Every thread is equipped with some basic low-level blocking support, via the</span>
<span class="doccomment">/// [`thread::park`][`park`] function and [`thread::Thread::unpark`][`unpark`]</span>
<span class="doccomment">/// method. [`park`] blocks the current thread, which can then be resumed from</span>
<span class="doccomment">/// another thread by calling the [`unpark`] method on the blocked thread's</span>
<span class="doccomment">/// handle.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Conceptually, each [`Thread`] handle has an associated token, which is</span>
<span class="doccomment">/// initially not present:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// * The [`thread::park`][`park`] function blocks the current thread unless or</span>
<span class="doccomment">/// until the token is available for its thread handle, at which point it</span>
<span class="doccomment">/// atomically consumes the token. It may also return *spuriously*, without</span>
<span class="doccomment">/// consuming the token. [`thread::park_timeout`] does the same, but allows</span>
<span class="doccomment">/// specifying a maximum time to block the thread for.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// * The [`unpark`] method on a [`Thread`] atomically makes the token available</span>
<span class="doccomment">/// if it wasn't already.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// In other words, each [`Thread`] acts a bit like a spinlock that can be</span>
<span class="doccomment">/// locked and unlocked using `park` and `unpark`.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The API is typically used by acquiring a handle to the current thread,</span>
<span class="doccomment">/// placing that handle in a shared data structure so that other threads can</span>
<span class="doccomment">/// find it, and then `park`ing. When some desired condition is met, another</span>
<span class="doccomment">/// thread calls [`unpark`] on the handle.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The motivation for this design is twofold:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// * It avoids the need to allocate mutexes and condvars when building new</span>
<span class="doccomment">/// synchronization primitives; the threads already provide basic</span>
<span class="doccomment">/// blocking/signaling.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// * It can be implemented very efficiently on many platforms.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">/// use std::time::Duration;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let parked_thread = thread::Builder::new()</span>
<span class="doccomment">/// .spawn(|| {</span>
<span class="doccomment">/// println!("Parking thread");</span>
<span class="doccomment">/// thread::park();</span>
<span class="doccomment">/// println!("Thread unparked");</span>
<span class="doccomment">/// })</span>
<span class="doccomment">/// .unwrap();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// // Let some time pass for the thread to be spawned.</span>
<span class="doccomment">/// thread::sleep(Duration::from_millis(10));</span>
<span class="doccomment">///</span>
<span class="doccomment">/// println!("Unpark the thread");</span>
<span class="doccomment">/// parked_thread.thread().unpark();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// parked_thread.join().unwrap();</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`Thread`]: ../../std/thread/struct.Thread.html</span>
<span class="doccomment">/// [`park`]: ../../std/thread/fn.park.html</span>
<span class="doccomment">/// [`unpark`]: ../../std/thread/struct.Thread.html#method.unpark</span>
<span class="doccomment">/// [`thread::park_timeout`]: ../../std/thread/fn.park_timeout.html</span>
<span class="comment">//</span>
<span class="comment">// The implementation currently uses the trivial strategy of a Mutex+Condvar</span>
<span class="comment">// with wakeup flag, which does not actually allow spurious wakeups. In the</span>
<span class="comment">// future, this will be implemented in a more efficient way, perhaps along the lines of</span>
<span class="comment">// http://cr.openjdk.java.net/~stefank/6989984.1/raw_files/new/src/os/linux/vm/os_linux.cpp</span>
<span class="comment">// or futuxes, and in either case may allow spurious wakeups.</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">park</span>() {
<span class="kw">let</span> <span class="ident">thread</span> <span class="op">=</span> <span class="ident">current</span>();
<span class="comment">// If we were previously notified then we consume this notification and</span>
<span class="comment">// return quickly.</span>
<span class="kw">if</span> <span class="ident">thread</span>.<span class="ident">inner</span>.<span class="ident">state</span>.<span class="ident">compare_exchange</span>(<span class="ident">NOTIFIED</span>, <span class="ident">EMPTY</span>, <span class="ident">SeqCst</span>, <span class="ident">SeqCst</span>).<span class="ident">is_ok</span>() {
<span class="kw">return</span>
}
<span class="comment">// Otherwise we need to coordinate going to sleep</span>
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">m</span> <span class="op">=</span> <span class="ident">thread</span>.<span class="ident">inner</span>.<span class="ident">lock</span>.<span class="ident">lock</span>().<span class="ident">unwrap</span>();
<span class="kw">match</span> <span class="ident">thread</span>.<span class="ident">inner</span>.<span class="ident">state</span>.<span class="ident">compare_exchange</span>(<span class="ident">EMPTY</span>, <span class="ident">PARKED</span>, <span class="ident">SeqCst</span>, <span class="ident">SeqCst</span>) {
<span class="prelude-val">Ok</span>(_) <span class="op">=></span> {}
<span class="prelude-val">Err</span>(<span class="ident">NOTIFIED</span>) <span class="op">=></span> <span class="kw">return</span>, <span class="comment">// notified after we locked</span>
<span class="prelude-val">Err</span>(_) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"inconsistent park state"</span>),
}
<span class="kw">loop</span> {
<span class="ident">m</span> <span class="op">=</span> <span class="ident">thread</span>.<span class="ident">inner</span>.<span class="ident">cvar</span>.<span class="ident">wait</span>(<span class="ident">m</span>).<span class="ident">unwrap</span>();
<span class="kw">match</span> <span class="ident">thread</span>.<span class="ident">inner</span>.<span class="ident">state</span>.<span class="ident">compare_exchange</span>(<span class="ident">NOTIFIED</span>, <span class="ident">EMPTY</span>, <span class="ident">SeqCst</span>, <span class="ident">SeqCst</span>) {
<span class="prelude-val">Ok</span>(_) <span class="op">=></span> <span class="kw">return</span>, <span class="comment">// got a notification</span>
<span class="prelude-val">Err</span>(_) <span class="op">=></span> {} <span class="comment">// spurious wakeup, go back to sleep</span>
}
}
}
<span class="doccomment">/// Use [`park_timeout`].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Blocks unless or until the current thread's token is made available or</span>
<span class="doccomment">/// the specified duration has been reached (may wake spuriously).</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The semantics of this function are equivalent to [`park`] except</span>
<span class="doccomment">/// that the thread will be blocked for roughly no longer than `dur`. This</span>
<span class="doccomment">/// method should not be used for precise timing due to anomalies such as</span>
<span class="doccomment">/// preemption or platform differences that may not cause the maximum</span>
<span class="doccomment">/// amount of time waited to be precisely `ms` long.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// See the [park documentation][`park`] for more detail.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`park_timeout`]: fn.park_timeout.html</span>
<span class="doccomment">/// [`park`]: ../../std/thread/fn.park.html</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="attribute">#[<span class="ident">rustc_deprecated</span>(<span class="ident">since</span> <span class="op">=</span> <span class="string">"1.6.0"</span>, <span class="ident">reason</span> <span class="op">=</span> <span class="string">"replaced by `std::thread::park_timeout`"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">park_timeout_ms</span>(<span class="ident">ms</span>: <span class="ident">u32</span>) {
<span class="ident">park_timeout</span>(<span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="ident">ms</span> <span class="kw">as</span> <span class="ident">u64</span>))
}
<span class="doccomment">/// Blocks unless or until the current thread's token is made available or</span>
<span class="doccomment">/// the specified duration has been reached (may wake spuriously).</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The semantics of this function are equivalent to [`park`][park] except</span>
<span class="doccomment">/// that the thread will be blocked for roughly no longer than `dur`. This</span>
<span class="doccomment">/// method should not be used for precise timing due to anomalies such as</span>
<span class="doccomment">/// preemption or platform differences that may not cause the maximum</span>
<span class="doccomment">/// amount of time waited to be precisely `dur` long.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// See the [park documentation][park] for more details.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Platform behavior</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Platforms which do not support nanosecond precision for sleeping will have</span>
<span class="doccomment">/// `dur` rounded up to the nearest granularity of time they can sleep for.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Waiting for the complete expiration of the timeout:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```rust,no_run</span>
<span class="doccomment">/// use std::thread::park_timeout;</span>
<span class="doccomment">/// use std::time::{Instant, Duration};</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let timeout = Duration::from_secs(2);</span>
<span class="doccomment">/// let beginning_park = Instant::now();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let mut timeout_remaining = timeout;</span>
<span class="doccomment">/// loop {</span>
<span class="doccomment">/// park_timeout(timeout_remaining);</span>
<span class="doccomment">/// let elapsed = beginning_park.elapsed();</span>
<span class="doccomment">/// if elapsed >= timeout {</span>
<span class="doccomment">/// break;</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// println!("restarting park_timeout after {:?}", elapsed);</span>
<span class="doccomment">/// timeout_remaining = timeout - elapsed;</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [park]: fn.park.html</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"park_timeout"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.4.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">park_timeout</span>(<span class="ident">dur</span>: <span class="ident">Duration</span>) {
<span class="kw">let</span> <span class="ident">thread</span> <span class="op">=</span> <span class="ident">current</span>();
<span class="comment">// Like `park` above we have a fast path for an already-notified thread, and</span>
<span class="comment">// afterwards we start coordinating for a sleep.</span>
<span class="comment">// return quickly.</span>
<span class="kw">if</span> <span class="ident">thread</span>.<span class="ident">inner</span>.<span class="ident">state</span>.<span class="ident">compare_exchange</span>(<span class="ident">NOTIFIED</span>, <span class="ident">EMPTY</span>, <span class="ident">SeqCst</span>, <span class="ident">SeqCst</span>).<span class="ident">is_ok</span>() {
<span class="kw">return</span>
}
<span class="kw">let</span> <span class="ident">m</span> <span class="op">=</span> <span class="ident">thread</span>.<span class="ident">inner</span>.<span class="ident">lock</span>.<span class="ident">lock</span>().<span class="ident">unwrap</span>();
<span class="kw">match</span> <span class="ident">thread</span>.<span class="ident">inner</span>.<span class="ident">state</span>.<span class="ident">compare_exchange</span>(<span class="ident">EMPTY</span>, <span class="ident">PARKED</span>, <span class="ident">SeqCst</span>, <span class="ident">SeqCst</span>) {
<span class="prelude-val">Ok</span>(_) <span class="op">=></span> {}
<span class="prelude-val">Err</span>(<span class="ident">NOTIFIED</span>) <span class="op">=></span> <span class="kw">return</span>, <span class="comment">// notified after we locked</span>
<span class="prelude-val">Err</span>(_) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"inconsistent park_timeout state"</span>),
}
<span class="comment">// Wait with a timeout, and if we spuriously wake up or otherwise wake up</span>
<span class="comment">// from a notification we just want to unconditionally set the state back to</span>
<span class="comment">// empty, either consuming a notification or un-flagging ourselves as</span>
<span class="comment">// parked.</span>
<span class="kw">let</span> (<span class="ident">_m</span>, <span class="ident">_result</span>) <span class="op">=</span> <span class="ident">thread</span>.<span class="ident">inner</span>.<span class="ident">cvar</span>.<span class="ident">wait_timeout</span>(<span class="ident">m</span>, <span class="ident">dur</span>).<span class="ident">unwrap</span>();
<span class="kw">match</span> <span class="ident">thread</span>.<span class="ident">inner</span>.<span class="ident">state</span>.<span class="ident">swap</span>(<span class="ident">EMPTY</span>, <span class="ident">SeqCst</span>) {
<span class="ident">NOTIFIED</span> <span class="op">=></span> {} <span class="comment">// got a notification, hurray!</span>
<span class="ident">PARKED</span> <span class="op">=></span> {} <span class="comment">// no notification, alas</span>
<span class="ident">n</span> <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"inconsistent park_timeout state: {}"</span>, <span class="ident">n</span>),
}
}
<span class="comment">////////////////////////////////////////////////////////////////////////////////</span>
<span class="comment">// ThreadId</span>
<span class="comment">////////////////////////////////////////////////////////////////////////////////</span>
<span class="doccomment">/// A unique identifier for a running thread.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// A `ThreadId` is an opaque object that has a unique value for each thread</span>
<span class="doccomment">/// that creates one. `ThreadId`s are not guaranteed to correspond to a thread's</span>
<span class="doccomment">/// system-designated identifier. A `ThreadId` can be retrieved from the [`id`]</span>
<span class="doccomment">/// method on a [`Thread`].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let other_thread = thread::spawn(|| {</span>
<span class="doccomment">/// thread::current().id()</span>
<span class="doccomment">/// });</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let other_thread_id = other_thread.join().unwrap();</span>
<span class="doccomment">/// assert!(thread::current().id() != other_thread_id);</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`id`]: ../../std/thread/struct.Thread.html#method.id</span>
<span class="doccomment">/// [`Thread`]: ../../std/thread/struct.Thread.html</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"thread_id"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.19.0"</span>)]</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Eq</span>, <span class="ident">PartialEq</span>, <span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">Hash</span>, <span class="ident">Debug</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ThreadId</span>(<span class="ident">u64</span>);
<span class="kw">impl</span> <span class="ident">ThreadId</span> {
<span class="comment">// Generate a new unique thread ID.</span>
<span class="kw">fn</span> <span class="ident">new</span>() <span class="op">-></span> <span class="ident">ThreadId</span> {
<span class="kw">static</span> <span class="ident">GUARD</span>: <span class="ident">mutex</span>::<span class="ident">Mutex</span> <span class="op">=</span> <span class="ident">mutex</span>::<span class="ident">Mutex</span>::<span class="ident">new</span>();
<span class="kw">static</span> <span class="kw-2">mut</span> <span class="ident">COUNTER</span>: <span class="ident">u64</span> <span class="op">=</span> <span class="number">0</span>;
<span class="kw">unsafe</span> {
<span class="ident">GUARD</span>.<span class="ident">lock</span>();
<span class="comment">// If we somehow use up all our bits, panic so that we're not</span>
<span class="comment">// covering up subtle bugs of IDs being reused.</span>
<span class="kw">if</span> <span class="ident">COUNTER</span> <span class="op">==</span> ::<span class="ident">u64</span>::<span class="ident">MAX</span> {
<span class="ident">GUARD</span>.<span class="ident">unlock</span>();
<span class="macro">panic</span><span class="macro">!</span>(<span class="string">"failed to generate unique thread ID: bitspace exhausted"</span>);
}
<span class="kw">let</span> <span class="ident">id</span> <span class="op">=</span> <span class="ident">COUNTER</span>;
<span class="ident">COUNTER</span> <span class="op">+=</span> <span class="number">1</span>;
<span class="ident">GUARD</span>.<span class="ident">unlock</span>();
<span class="ident">ThreadId</span>(<span class="ident">id</span>)
}
}
}
<span class="comment">////////////////////////////////////////////////////////////////////////////////</span>
<span class="comment">// Thread</span>
<span class="comment">////////////////////////////////////////////////////////////////////////////////</span>
<span class="doccomment">/// The internal representation of a `Thread` handle</span>
<span class="kw">struct</span> <span class="ident">Inner</span> {
<span class="ident">name</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">CString</span><span class="op">></span>, <span class="comment">// Guaranteed to be UTF-8</span>
<span class="ident">id</span>: <span class="ident">ThreadId</span>,
<span class="comment">// state for thread park/unpark</span>
<span class="ident">state</span>: <span class="ident">AtomicUsize</span>,
<span class="ident">lock</span>: <span class="ident">Mutex</span><span class="op"><</span>()<span class="op">></span>,
<span class="ident">cvar</span>: <span class="ident">Condvar</span>,
}
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>)]</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="doccomment">/// A handle to a thread.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Threads are represented via the `Thread` type, which you can get in one of</span>
<span class="doccomment">/// two ways:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// * By spawning a new thread, e.g. using the [`thread::spawn`][`spawn`]</span>
<span class="doccomment">/// function, and calling [`thread`][`JoinHandle::thread`] on the</span>
<span class="doccomment">/// [`JoinHandle`].</span>
<span class="doccomment">/// * By requesting the current thread, using the [`thread::current`] function.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The [`thread::current`] function is available even for threads not spawned</span>
<span class="doccomment">/// by the APIs of this module.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// There is usually no need to create a `Thread` struct yourself, one</span>
<span class="doccomment">/// should instead use a function like `spawn` to create new threads, see the</span>
<span class="doccomment">/// docs of [`Builder`] and [`spawn`] for more details.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`Builder`]: ../../std/thread/struct.Builder.html</span>
<span class="doccomment">/// [`JoinHandle::thread`]: ../../std/thread/struct.JoinHandle.html#method.thread</span>
<span class="doccomment">/// [`JoinHandle`]: ../../std/thread/struct.JoinHandle.html</span>
<span class="doccomment">/// [`thread::current`]: ../../std/thread/fn.current.html</span>
<span class="doccomment">/// [`spawn`]: ../../std/thread/fn.spawn.html</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Thread</span> {
<span class="ident">inner</span>: <span class="ident">Arc</span><span class="op"><</span><span class="ident">Inner</span><span class="op">></span>,
}
<span class="kw">impl</span> <span class="ident">Thread</span> {
<span class="comment">// Used only internally to construct a thread object without spawning</span>
<span class="comment">// Panics if the name contains nuls.</span>
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">name</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>) <span class="op">-></span> <span class="ident">Thread</span> {
<span class="kw">let</span> <span class="ident">cname</span> <span class="op">=</span> <span class="ident">name</span>.<span class="ident">map</span>(<span class="op">|</span><span class="ident">n</span><span class="op">|</span> {
<span class="ident">CString</span>::<span class="ident">new</span>(<span class="ident">n</span>).<span class="ident">expect</span>(<span class="string">"thread name may not contain interior null bytes"</span>)
});
<span class="ident">Thread</span> {
<span class="ident">inner</span>: <span class="ident">Arc</span>::<span class="ident">new</span>(<span class="ident">Inner</span> {
<span class="ident">name</span>: <span class="ident">cname</span>,
<span class="ident">id</span>: <span class="ident">ThreadId</span>::<span class="ident">new</span>(),
<span class="ident">state</span>: <span class="ident">AtomicUsize</span>::<span class="ident">new</span>(<span class="ident">EMPTY</span>),
<span class="ident">lock</span>: <span class="ident">Mutex</span>::<span class="ident">new</span>(()),
<span class="ident">cvar</span>: <span class="ident">Condvar</span>::<span class="ident">new</span>(),
})
}
}
<span class="doccomment">/// Atomically makes the handle's token available if it is not already.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Every thread is equipped with some basic low-level blocking support, via</span>
<span class="doccomment">/// the [`park`][park] function and the `unpark()` method. These can be</span>
<span class="doccomment">/// used as a more CPU-efficient implementation of a spinlock.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// See the [park documentation][park] for more details.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">/// use std::time::Duration;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let parked_thread = thread::Builder::new()</span>
<span class="doccomment">/// .spawn(|| {</span>
<span class="doccomment">/// println!("Parking thread");</span>
<span class="doccomment">/// thread::park();</span>
<span class="doccomment">/// println!("Thread unparked");</span>
<span class="doccomment">/// })</span>
<span class="doccomment">/// .unwrap();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// // Let some time pass for the thread to be spawned.</span>
<span class="doccomment">/// thread::sleep(Duration::from_millis(10));</span>
<span class="doccomment">///</span>
<span class="doccomment">/// println!("Unpark the thread");</span>
<span class="doccomment">/// parked_thread.thread().unpark();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// parked_thread.join().unwrap();</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [park]: fn.park.html</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">unpark</span>(<span class="kw-2">&</span><span class="self">self</span>) {
<span class="kw">loop</span> {
<span class="kw">match</span> <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">state</span>.<span class="ident">compare_exchange</span>(<span class="ident">EMPTY</span>, <span class="ident">NOTIFIED</span>, <span class="ident">SeqCst</span>, <span class="ident">SeqCst</span>) {
<span class="prelude-val">Ok</span>(_) <span class="op">=></span> <span class="kw">return</span>, <span class="comment">// no one was waiting</span>
<span class="prelude-val">Err</span>(<span class="ident">NOTIFIED</span>) <span class="op">=></span> <span class="kw">return</span>, <span class="comment">// already unparked</span>
<span class="prelude-val">Err</span>(<span class="ident">PARKED</span>) <span class="op">=></span> {} <span class="comment">// gotta go wake someone up</span>
_ <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"inconsistent state in unpark"</span>),
}
<span class="comment">// Coordinate wakeup through the mutex and a condvar notification</span>
<span class="kw">let</span> <span class="ident">_lock</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">lock</span>.<span class="ident">lock</span>().<span class="ident">unwrap</span>();
<span class="kw">match</span> <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">state</span>.<span class="ident">compare_exchange</span>(<span class="ident">PARKED</span>, <span class="ident">NOTIFIED</span>, <span class="ident">SeqCst</span>, <span class="ident">SeqCst</span>) {
<span class="prelude-val">Ok</span>(_) <span class="op">=></span> <span class="kw">return</span> <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">cvar</span>.<span class="ident">notify_one</span>(),
<span class="prelude-val">Err</span>(<span class="ident">NOTIFIED</span>) <span class="op">=></span> <span class="kw">return</span>, <span class="comment">// a different thread unparked</span>
<span class="prelude-val">Err</span>(<span class="ident">EMPTY</span>) <span class="op">=></span> {} <span class="comment">// parked thread went away, try again</span>
_ <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"inconsistent state in unpark"</span>),
}
}
}
<span class="doccomment">/// Gets the thread's unique identifier.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let other_thread = thread::spawn(|| {</span>
<span class="doccomment">/// thread::current().id()</span>
<span class="doccomment">/// });</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let other_thread_id = other_thread.join().unwrap();</span>
<span class="doccomment">/// assert!(thread::current().id() != other_thread_id);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"thread_id"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.19.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">id</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">ThreadId</span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">id</span>
}
<span class="doccomment">/// Gets the thread's name.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// For more information about named threads, see</span>
<span class="doccomment">/// [this module-level documentation][naming-threads].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Threads by default have no name specified:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let builder = thread::Builder::new();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let handler = builder.spawn(|| {</span>
<span class="doccomment">/// assert!(thread::current().name().is_none());</span>
<span class="doccomment">/// }).unwrap();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// handler.join().unwrap();</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Thread with a specified name:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let builder = thread::Builder::new()</span>
<span class="doccomment">/// .name("foo".into());</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let handler = builder.spawn(|| {</span>
<span class="doccomment">/// assert_eq!(thread::current().name(), Some("foo"))</span>
<span class="doccomment">/// }).unwrap();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// handler.join().unwrap();</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [naming-threads]: ./index.html#naming-threads</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">name</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">str</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">cname</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">s</span><span class="op">|</span> <span class="kw">unsafe</span> { <span class="ident">str</span>::<span class="ident">from_utf8_unchecked</span>(<span class="ident">s</span>.<span class="ident">to_bytes</span>()) } )
}
<span class="kw">fn</span> <span class="ident">cname</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">CStr</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">name</span>.<span class="ident">as_ref</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">s</span><span class="op">|</span> <span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="ident">s</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">Thread</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="ident">fmt</span>::<span class="ident">Debug</span>::<span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">name</span>(), <span class="ident">f</span>)
}
}
<span class="comment">////////////////////////////////////////////////////////////////////////////////</span>
<span class="comment">// JoinHandle</span>
<span class="comment">////////////////////////////////////////////////////////////////////////////////</span>
<span class="doccomment">/// A specialized [`Result`] type for threads.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Indicates the manner in which a thread exited.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// A thread that completes without panicking is considered to exit successfully.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">/// use std::fs;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// fn copy_in_thread() -> thread::Result<()> {</span>
<span class="doccomment">/// thread::spawn(move || { fs::copy("foo.txt", "bar.txt").unwrap(); }).join()</span>
<span class="doccomment">/// }</span>
<span class="doccomment">///</span>
<span class="doccomment">/// fn main() {</span>
<span class="doccomment">/// match copy_in_thread() {</span>
<span class="doccomment">/// Ok(_) => println!("this is fine"),</span>
<span class="doccomment">/// Err(_) => println!("thread panicked"),</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`Result`]: ../../std/result/enum.Result.html</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">type</span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="op">=</span> ::<span class="ident">result</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">T</span>, <span class="ident">Box</span><span class="op"><</span><span class="ident">Any</span> <span class="op">+</span> <span class="ident">Send</span> <span class="op">+</span> <span class="lifetime">'static</span><span class="op">>></span>;
<span class="comment">// This packet is used to communicate the return value between the child thread</span>
<span class="comment">// and the parent thread. Memory is shared through the `Arc` within and there's</span>
<span class="comment">// no need for a mutex here because synchronization happens with `join()` (the</span>
<span class="comment">// parent thread never reads this packet until the child has exited).</span>
<span class="comment">//</span>
<span class="comment">// This packet itself is then stored into a `JoinInner` which in turns is placed</span>
<span class="comment">// in `JoinHandle` and `JoinGuard`. Due to the usage of `UnsafeCell` we need to</span>
<span class="comment">// manually worry about impls like Send and Sync. The type `T` should</span>
<span class="comment">// already always be Send (otherwise the thread could not have been created) and</span>
<span class="comment">// this type is inherently Sync because no methods take &self. Regardless,</span>
<span class="comment">// however, we add inheriting impls for Send/Sync to this type to ensure it's</span>
<span class="comment">// Send/Sync and that future modifications will still appropriately classify it.</span>
<span class="kw">struct</span> <span class="ident">Packet</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>(<span class="ident">Arc</span><span class="op"><</span><span class="ident">UnsafeCell</span><span class="op"><</span><span class="prelude-ty">Option</span><span class="op"><</span><span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">T</span><span class="op">>></span><span class="op">>></span>);
<span class="kw">unsafe</span> <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Send</span><span class="op">></span> <span class="ident">Send</span> <span class="kw">for</span> <span class="ident">Packet</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {}
<span class="kw">unsafe</span> <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Sync</span><span class="op">></span> <span class="ident">Sync</span> <span class="kw">for</span> <span class="ident">Packet</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {}
<span class="doccomment">/// Inner representation for JoinHandle</span>
<span class="kw">struct</span> <span class="ident">JoinInner</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {
<span class="ident">native</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">imp</span>::<span class="ident">Thread</span><span class="op">></span>,
<span class="ident">thread</span>: <span class="ident">Thread</span>,
<span class="ident">packet</span>: <span class="ident">Packet</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>,
}
<span class="kw">impl</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="ident">JoinInner</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {
<span class="kw">fn</span> <span class="ident">join</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">native</span>.<span class="ident">take</span>().<span class="ident">unwrap</span>().<span class="ident">join</span>();
<span class="kw">unsafe</span> {
(<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">packet</span>.<span class="number">0</span>.<span class="ident">get</span>()).<span class="ident">take</span>().<span class="ident">unwrap</span>()
}
}
}
<span class="doccomment">/// An owned permission to join on a thread (block on its termination).</span>
<span class="doccomment">///</span>
<span class="doccomment">/// A `JoinHandle` *detaches* the associated thread when it is dropped, which</span>
<span class="doccomment">/// means that there is no longer any handle to thread and no way to `join`</span>
<span class="doccomment">/// on it.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Due to platform restrictions, it is not possible to [`Clone`] this</span>
<span class="doccomment">/// handle: the ability to join a thread is a uniquely-owned permission.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This `struct` is created by the [`thread::spawn`] function and the</span>
<span class="doccomment">/// [`thread::Builder::spawn`] method.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Creation from [`thread::spawn`]:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let join_handle: thread::JoinHandle<_> = thread::spawn(|| {</span>
<span class="doccomment">/// // some work here</span>
<span class="doccomment">/// });</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Creation from [`thread::Builder::spawn`]:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let builder = thread::Builder::new();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let join_handle: thread::JoinHandle<_> = builder.spawn(|| {</span>
<span class="doccomment">/// // some work here</span>
<span class="doccomment">/// }).unwrap();</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Child being detached and outliving its parent:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">/// use std::time::Duration;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let original_thread = thread::spawn(|| {</span>
<span class="doccomment">/// let _detached_thread = thread::spawn(|| {</span>
<span class="doccomment">/// // Here we sleep to make sure that the first thread returns before.</span>
<span class="doccomment">/// thread::sleep(Duration::from_millis(10));</span>
<span class="doccomment">/// // This will be called, even though the JoinHandle is dropped.</span>
<span class="doccomment">/// println!("♫ Still alive ♫");</span>
<span class="doccomment">/// });</span>
<span class="doccomment">/// });</span>
<span class="doccomment">///</span>
<span class="doccomment">/// original_thread.join().expect("The thread being joined has panicked");</span>
<span class="doccomment">/// println!("Original thread is joined.");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// // We make sure that the new thread has time to run, before the main</span>
<span class="doccomment">/// // thread returns.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// thread::sleep(Duration::from_millis(1000));</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`Clone`]: ../../std/clone/trait.Clone.html</span>
<span class="doccomment">/// [`thread::spawn`]: fn.spawn.html</span>
<span class="doccomment">/// [`thread::Builder::spawn`]: struct.Builder.html#method.spawn</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">JoinHandle</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>(<span class="ident">JoinInner</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>);
<span class="kw">impl</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="ident">JoinHandle</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {
<span class="doccomment">/// Extracts a handle to the underlying thread.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let builder = thread::Builder::new();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let join_handle: thread::JoinHandle<_> = builder.spawn(|| {</span>
<span class="doccomment">/// // some work here</span>
<span class="doccomment">/// }).unwrap();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let thread = join_handle.thread();</span>
<span class="doccomment">/// println!("thread id: {:?}", thread.id());</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">thread</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">Thread</span> {
<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>.<span class="ident">thread</span>
}
<span class="doccomment">/// Waits for the associated thread to finish.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// If the child thread panics, [`Err`] is returned with the parameter given</span>
<span class="doccomment">/// to [`panic`].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`Err`]: ../../std/result/enum.Result.html#variant.Err</span>
<span class="doccomment">/// [`panic`]: ../../std/macro.panic.html</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Panics</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This function may panic on some platforms if a thread attempts to join</span>
<span class="doccomment">/// itself or otherwise may create a deadlock with joining threads.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::thread;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let builder = thread::Builder::new();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let join_handle: thread::JoinHandle<_> = builder.spawn(|| {</span>
<span class="doccomment">/// // some work here</span>
<span class="doccomment">/// }).unwrap();</span>
<span class="doccomment">/// join_handle.join().expect("Couldn't join on the associated thread");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">join</span>(<span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">join</span>()
}
}
<span class="kw">impl</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="ident">AsInner</span><span class="op"><</span><span class="ident">imp</span>::<span class="ident">Thread</span><span class="op">></span> <span class="kw">for</span> <span class="ident">JoinHandle</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {
<span class="kw">fn</span> <span class="ident">as_inner</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">imp</span>::<span class="ident">Thread</span> { <span class="self">self</span>.<span class="number">0</span>.<span class="ident">native</span>.<span class="ident">as_ref</span>().<span class="ident">unwrap</span>() }
}
<span class="kw">impl</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="ident">IntoInner</span><span class="op"><</span><span class="ident">imp</span>::<span class="ident">Thread</span><span class="op">></span> <span class="kw">for</span> <span class="ident">JoinHandle</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {
<span class="kw">fn</span> <span class="ident">into_inner</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">imp</span>::<span class="ident">Thread</span> { <span class="self">self</span>.<span class="number">0</span>.<span class="ident">native</span>.<span class="ident">unwrap</span>() }
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"std_debug"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.16.0"</span>)]</span>
<span class="kw">impl</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">JoinHandle</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="ident">f</span>.<span class="ident">pad</span>(<span class="string">"JoinHandle { .. }"</span>)
}
}
<span class="kw">fn</span> <span class="ident">_assert_sync_and_send</span>() {
<span class="kw">fn</span> <span class="ident">_assert_both</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Send</span> <span class="op">+</span> <span class="ident">Sync</span><span class="op">></span>() {}
<span class="ident">_assert_both</span>::<span class="op"><</span><span class="ident">JoinHandle</span><span class="op"><</span>()<span class="op">>></span>();
<span class="ident">_assert_both</span>::<span class="op"><</span><span class="ident">Thread</span><span class="op">></span>();
}
<span class="comment">////////////////////////////////////////////////////////////////////////////////</span>
<span class="comment">// Tests</span>
<span class="comment">////////////////////////////////////////////////////////////////////////////////</span>
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">all</span>(<span class="ident">test</span>, <span class="ident">not</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"emscripten"</span>)))]</span>
<span class="kw">mod</span> <span class="ident">tests</span> {
<span class="kw">use</span> <span class="ident">any</span>::<span class="ident">Any</span>;
<span class="kw">use</span> <span class="ident">sync</span>::<span class="ident">mpsc</span>::{<span class="ident">channel</span>, <span class="ident">Sender</span>};
<span class="kw">use</span> <span class="ident">result</span>;
<span class="kw">use</span> <span class="kw">super</span>::{<span class="ident">Builder</span>};
<span class="kw">use</span> <span class="ident">thread</span>;
<span class="kw">use</span> <span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="kw">use</span> <span class="ident">u32</span>;
<span class="comment">// !!! These tests are dangerous. If something is buggy, they will hang, !!!</span>
<span class="comment">// !!! instead of exiting cleanly. This might wedge the buildbots. !!!</span>
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_unnamed_thread</span>() {
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">thread</span>::<span class="ident">current</span>().<span class="ident">name</span>().<span class="ident">is_none</span>());
}).<span class="ident">join</span>().<span class="ident">ok</span>().<span class="ident">unwrap</span>();
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_named_thread</span>() {
<span class="ident">Builder</span>::<span class="ident">new</span>().<span class="ident">name</span>(<span class="string">"ada lovelace"</span>.<span class="ident">to_string</span>()).<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">thread</span>::<span class="ident">current</span>().<span class="ident">name</span>().<span class="ident">unwrap</span>() <span class="op">==</span> <span class="string">"ada lovelace"</span>.<span class="ident">to_string</span>());
}).<span class="ident">unwrap</span>().<span class="ident">join</span>().<span class="ident">unwrap</span>();
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="attribute">#[<span class="ident">should_panic</span>]</span>
<span class="kw">fn</span> <span class="ident">test_invalid_named_thread</span>() {
<span class="kw">let</span> _ <span class="op">=</span> <span class="ident">Builder</span>::<span class="ident">new</span>().<span class="ident">name</span>(<span class="string">"ada l\0velace"</span>.<span class="ident">to_string</span>()).<span class="ident">spawn</span>(<span class="op">||</span> {});
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_run_basic</span>() {
<span class="kw">let</span> (<span class="ident">tx</span>, <span class="ident">rx</span>) <span class="op">=</span> <span class="ident">channel</span>();
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="ident">tx</span>.<span class="ident">send</span>(()).<span class="ident">unwrap</span>();
});
<span class="ident">rx</span>.<span class="ident">recv</span>().<span class="ident">unwrap</span>();
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_join_panic</span>() {
<span class="kw">match</span> <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="macro">panic</span><span class="macro">!</span>()
}).<span class="ident">join</span>() {
<span class="ident">result</span>::<span class="prelude-ty">Result</span>::<span class="prelude-val">Err</span>(_) <span class="op">=></span> (),
<span class="ident">result</span>::<span class="prelude-ty">Result</span>::<span class="prelude-val">Ok</span>(()) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>()
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_spawn_sched</span>() {
<span class="kw">let</span> (<span class="ident">tx</span>, <span class="ident">rx</span>) <span class="op">=</span> <span class="ident">channel</span>();
<span class="kw">fn</span> <span class="ident">f</span>(<span class="ident">i</span>: <span class="ident">i32</span>, <span class="ident">tx</span>: <span class="ident">Sender</span><span class="op"><</span>()<span class="op">></span>) {
<span class="kw">let</span> <span class="ident">tx</span> <span class="op">=</span> <span class="ident">tx</span>.<span class="ident">clone</span>();
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="kw">if</span> <span class="ident">i</span> <span class="op">==</span> <span class="number">0</span> {
<span class="ident">tx</span>.<span class="ident">send</span>(()).<span class="ident">unwrap</span>();
} <span class="kw">else</span> {
<span class="ident">f</span>(<span class="ident">i</span> <span class="op">-</span> <span class="number">1</span>, <span class="ident">tx</span>);
}
});
}
<span class="ident">f</span>(<span class="number">10</span>, <span class="ident">tx</span>);
<span class="ident">rx</span>.<span class="ident">recv</span>().<span class="ident">unwrap</span>();
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_spawn_sched_childs_on_default_sched</span>() {
<span class="kw">let</span> (<span class="ident">tx</span>, <span class="ident">rx</span>) <span class="op">=</span> <span class="ident">channel</span>();
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="ident">tx</span>.<span class="ident">send</span>(()).<span class="ident">unwrap</span>();
});
});
<span class="ident">rx</span>.<span class="ident">recv</span>().<span class="ident">unwrap</span>();
}
<span class="kw">fn</span> <span class="ident">avoid_copying_the_body</span><span class="op"><</span><span class="ident">F</span><span class="op">></span>(<span class="ident">spawnfn</span>: <span class="ident">F</span>) <span class="kw">where</span> <span class="ident">F</span>: <span class="ident">FnOnce</span>(<span class="ident">Box</span><span class="op"><</span><span class="ident">Fn</span>() <span class="op">+</span> <span class="ident">Send</span><span class="op">></span>) {
<span class="kw">let</span> (<span class="ident">tx</span>, <span class="ident">rx</span>) <span class="op">=</span> <span class="ident">channel</span>();
<span class="kw">let</span> <span class="ident">x</span>: <span class="ident">Box</span><span class="op"><</span>_<span class="op">></span> <span class="op">=</span> <span class="kw">box</span> <span class="number">1</span>;
<span class="kw">let</span> <span class="ident">x_in_parent</span> <span class="op">=</span> (<span class="kw-2">&</span><span class="kw-2">*</span><span class="ident">x</span>) <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">i32</span> <span class="kw">as</span> <span class="ident">usize</span>;
<span class="ident">spawnfn</span>(<span class="ident">Box</span>::<span class="ident">new</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="kw">let</span> <span class="ident">x_in_child</span> <span class="op">=</span> (<span class="kw-2">&</span><span class="kw-2">*</span><span class="ident">x</span>) <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">i32</span> <span class="kw">as</span> <span class="ident">usize</span>;
<span class="ident">tx</span>.<span class="ident">send</span>(<span class="ident">x_in_child</span>).<span class="ident">unwrap</span>();
}));
<span class="kw">let</span> <span class="ident">x_in_child</span> <span class="op">=</span> <span class="ident">rx</span>.<span class="ident">recv</span>().<span class="ident">unwrap</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">x_in_parent</span>, <span class="ident">x_in_child</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_avoid_copying_the_body_spawn</span>() {
<span class="ident">avoid_copying_the_body</span>(<span class="op">|</span><span class="ident">v</span><span class="op">|</span> {
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">||</span> <span class="ident">v</span>());
});
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_avoid_copying_the_body_thread_spawn</span>() {
<span class="ident">avoid_copying_the_body</span>(<span class="op">|</span><span class="ident">f</span><span class="op">|</span> {
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="ident">f</span>();
});
})
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_avoid_copying_the_body_join</span>() {
<span class="ident">avoid_copying_the_body</span>(<span class="op">|</span><span class="ident">f</span><span class="op">|</span> {
<span class="kw">let</span> _ <span class="op">=</span> <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="ident">f</span>()
}).<span class="ident">join</span>();
})
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_child_doesnt_ref_parent</span>() {
<span class="comment">// If the child refcounts the parent thread, this will stack overflow when</span>
<span class="comment">// climbing the thread tree to dereference each ancestor. (See #1789)</span>
<span class="comment">// (well, it would if the constant were 8000+ - I lowered it to be more</span>
<span class="comment">// valgrind-friendly. try this at home, instead..!)</span>
<span class="kw">const</span> <span class="ident">GENERATIONS</span>: <span class="ident">u32</span> <span class="op">=</span> <span class="number">16</span>;
<span class="kw">fn</span> <span class="ident">child_no</span>(<span class="ident">x</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="ident">Box</span><span class="op"><</span><span class="ident">Fn</span>() <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> {
<span class="kw">return</span> <span class="ident">Box</span>::<span class="ident">new</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="kw">if</span> <span class="ident">x</span> <span class="op"><</span> <span class="ident">GENERATIONS</span> {
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> <span class="ident">child_no</span>(<span class="ident">x</span><span class="op">+</span><span class="number">1</span>)());
}
});
}
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="op">||</span> <span class="ident">child_no</span>(<span class="number">0</span>)());
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_simple_newsched_spawn</span>() {
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">||</span> {});
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_try_panic_message_static_str</span>() {
<span class="kw">match</span> <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="macro">panic</span><span class="macro">!</span>(<span class="string">"static string"</span>);
}).<span class="ident">join</span>() {
<span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> {
<span class="kw">type</span> <span class="ident">T</span> <span class="op">=</span> <span class="kw-2">&</span><span class="lifetime">'static</span> <span class="ident">str</span>;
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">e</span>.<span class="ident">is</span>::<span class="op"><</span><span class="ident">T</span><span class="op">></span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="kw-2">*</span><span class="ident">e</span>.<span class="ident">downcast</span>::<span class="op"><</span><span class="ident">T</span><span class="op">></span>().<span class="ident">unwrap</span>(), <span class="string">"static string"</span>);
}
<span class="prelude-val">Ok</span>(()) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>()
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_try_panic_message_owned_str</span>() {
<span class="kw">match</span> <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="macro">panic</span><span class="macro">!</span>(<span class="string">"owned string"</span>.<span class="ident">to_string</span>());
}).<span class="ident">join</span>() {
<span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> {
<span class="kw">type</span> <span class="ident">T</span> <span class="op">=</span> <span class="ident">String</span>;
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">e</span>.<span class="ident">is</span>::<span class="op"><</span><span class="ident">T</span><span class="op">></span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="kw-2">*</span><span class="ident">e</span>.<span class="ident">downcast</span>::<span class="op"><</span><span class="ident">T</span><span class="op">></span>().<span class="ident">unwrap</span>(), <span class="string">"owned string"</span>.<span class="ident">to_string</span>());
}
<span class="prelude-val">Ok</span>(()) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>()
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_try_panic_message_any</span>() {
<span class="kw">match</span> <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="macro">panic</span><span class="macro">!</span>(<span class="kw">box</span> <span class="number">413u16</span> <span class="kw">as</span> <span class="ident">Box</span><span class="op"><</span><span class="ident">Any</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span>);
}).<span class="ident">join</span>() {
<span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> {
<span class="kw">type</span> <span class="ident">T</span> <span class="op">=</span> <span class="ident">Box</span><span class="op"><</span><span class="ident">Any</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span>;
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">e</span>.<span class="ident">is</span>::<span class="op"><</span><span class="ident">T</span><span class="op">></span>());
<span class="kw">let</span> <span class="ident">any</span> <span class="op">=</span> <span class="ident">e</span>.<span class="ident">downcast</span>::<span class="op"><</span><span class="ident">T</span><span class="op">></span>().<span class="ident">unwrap</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">any</span>.<span class="ident">is</span>::<span class="op"><</span><span class="ident">u16</span><span class="op">></span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="kw-2">*</span><span class="ident">any</span>.<span class="ident">downcast</span>::<span class="op"><</span><span class="ident">u16</span><span class="op">></span>().<span class="ident">unwrap</span>(), <span class="number">413</span>);
}
<span class="prelude-val">Ok</span>(()) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>()
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_try_panic_message_unit_struct</span>() {
<span class="kw">struct</span> <span class="ident">Juju</span>;
<span class="kw">match</span> <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="macro">panic</span><span class="macro">!</span>(<span class="ident">Juju</span>)
}).<span class="ident">join</span>() {
<span class="prelude-val">Err</span>(<span class="kw-2">ref</span> <span class="ident">e</span>) <span class="kw">if</span> <span class="ident">e</span>.<span class="ident">is</span>::<span class="op"><</span><span class="ident">Juju</span><span class="op">></span>() <span class="op">=></span> {}
<span class="prelude-val">Err</span>(_) <span class="op">|</span> <span class="prelude-val">Ok</span>(()) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>()
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_park_timeout_unpark_before</span>() {
<span class="kw">for</span> _ <span class="kw">in</span> <span class="number">0</span>..<span class="number">10</span> {
<span class="ident">thread</span>::<span class="ident">current</span>().<span class="ident">unpark</span>();
<span class="ident">thread</span>::<span class="ident">park_timeout</span>(<span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="ident">u32</span>::<span class="ident">MAX</span> <span class="kw">as</span> <span class="ident">u64</span>));
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_park_timeout_unpark_not_called</span>() {
<span class="kw">for</span> _ <span class="kw">in</span> <span class="number">0</span>..<span class="number">10</span> {
<span class="ident">thread</span>::<span class="ident">park_timeout</span>(<span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="number">10</span>));
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_park_timeout_unpark_called_other_thread</span>() {
<span class="kw">for</span> _ <span class="kw">in</span> <span class="number">0</span>..<span class="number">10</span> {
<span class="kw">let</span> <span class="ident">th</span> <span class="op">=</span> <span class="ident">thread</span>::<span class="ident">current</span>();
<span class="kw">let</span> <span class="ident">_guard</span> <span class="op">=</span> <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">||</span> {
<span class="kw">super</span>::<span class="ident">sleep</span>(<span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="number">50</span>));
<span class="ident">th</span>.<span class="ident">unpark</span>();
});
<span class="ident">thread</span>::<span class="ident">park_timeout</span>(<span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="ident">u32</span>::<span class="ident">MAX</span> <span class="kw">as</span> <span class="ident">u64</span>));
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">sleep_ms_smoke</span>() {
<span class="ident">thread</span>::<span class="ident">sleep</span>(<span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="number">2</span>));
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_thread_id_equal</span>() {
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">thread</span>::<span class="ident">current</span>().<span class="ident">id</span>() <span class="op">==</span> <span class="ident">thread</span>::<span class="ident">current</span>().<span class="ident">id</span>());
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_thread_id_not_equal</span>() {
<span class="kw">let</span> <span class="ident">spawned_id</span> <span class="op">=</span> <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="op">||</span> <span class="ident">thread</span>::<span class="ident">current</span>().<span class="ident">id</span>()).<span class="ident">join</span>().<span class="ident">unwrap</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">thread</span>::<span class="ident">current</span>().<span class="ident">id</span>() <span class="op">!=</span> <span class="ident">spawned_id</span>);
}
<span class="comment">// NOTE: the corresponding test for stderr is in run-pass/thread-stderr, due</span>
<span class="comment">// to the test harness apparently interfering with stderr configuration.</span>
}
</pre>
</section>
<section id='search' class="content hidden"></section>
<section class="footer"></section>
<aside id="help" class="hidden">
<div>
<h1 class="hidden">Help</h1>
<div class="shortcuts">
<h2>Keyboard Shortcuts</h2>
<dl>
<dt><kbd>?</kbd></dt>
<dd>Show this help dialog</dd>
<dt><kbd>S</kbd></dt>
<dd>Focus the search field</dd>
<dt><kbd>↑</kbd></dt>
<dd>Move up in search results</dd>
<dt><kbd>↓</kbd></dt>
<dd>Move down in search results</dd>
<dt><kbd>↹</kbd></dt>
<dd>Switch tab</dd>
<dt><kbd>⏎</kbd></dt>
<dd>Go to active search result</dd>
<dt><kbd>+</kbd></dt>
<dd>Expand all sections</dd>
<dt><kbd>-</kbd></dt>
<dd>Collapse all sections</dd>
</dl>
</div>
<div class="infos">
<h2>Search Tricks</h2>
<p>
Prefix searches with a type followed by a colon (e.g.
<code>fn:</code>) to restrict the search to a given type.
</p>
<p>
Accepted types are: <code>fn</code>, <code>mod</code>,
<code>struct</code>, <code>enum</code>,
<code>trait</code>, <code>type</code>, <code>macro</code>,
and <code>const</code>.
</p>
<p>
Search functions by type signature (e.g.
<code>vec -> usize</code> or <code>* -> vec</code>)
</p>
</div>
</div>
</aside>
<script>
window.rootPath = "../../../";
window.currentCrate = "std";
</script>
<script src="../../../main.js"></script>
<script defer src="../../../search-index.js"></script>
</body>
</html>
distrib
>
Mageia
>
6
>
x86_64
>
media
>
core-updates
>
by-pkgid
>
fdedb3cf2140df9b6d419a2338ab1caa
>
files
>
3433
