<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.3"/> <title>libstdc++: safe_base.h Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="navtree.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="resize.js"></script> <script type="text/javascript" src="navtree.js"></script> <script type="text/javascript"> $(document).ready(initResizable); $(window).load(resizeHeight); </script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td style="padding-left: 0.5em;"> <div id="projectname">libstdc++ </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.8.3 --> </div><!-- top --> <div id="side-nav" class="ui-resizable side-nav-resizable"> <div id="nav-tree"> <div id="nav-tree-contents"> <div id="nav-sync" class="sync"></div> </div> </div> <div id="splitbar" style="-moz-user-select:none;" class="ui-resizable-handle"> </div> </div> <script type="text/javascript"> $(document).ready(function(){initNavTree('a01430_source.html','');}); </script> <div id="doc-content"> <div class="header"> <div class="headertitle"> <div class="title">safe_base.h</div> </div> </div><!--header--> <div class="contents"> <a href="a01430.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Safe sequence/iterator base implementation -*- C++ -*-</span></div> <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div> <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Copyright (C) 2003, 2004, 2005, 2006, 2009, 2010</span></div> <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// Free Software Foundation, Inc.</span></div> <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">//</span></div> <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// This file is part of the GNU ISO C++ Library. This library is free</span></div> <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// software; you can redistribute it and/or modify it under the</span></div> <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// terms of the GNU General Public License as published by the</span></div> <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// Free Software Foundation; either version 3, or (at your option)</span></div> <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// any later version.</span></div> <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> </div> <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// This library is distributed in the hope that it will be useful,</span></div> <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div> <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div> <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">// GNU General Public License for more details.</span></div> <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div> <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// Under Section 7 of GPL version 3, you are granted additional</span></div> <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// permissions described in the GCC Runtime Library Exception, version</span></div> <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">// 3.1, as published by the Free Software Foundation.</span></div> <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div> <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// You should have received a copy of the GNU General Public License and</span></div> <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span></div> <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</span></div> <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment">// <http://www.gnu.org/licenses/>.</span></div> <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"></span></div> <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">/** @file debug/safe_base.h</span></div> <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * This file is a GNU debug extension to the Standard C++ Library.</span></div> <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> */</span></div> <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div> <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#ifndef _GLIBCXX_DEBUG_SAFE_BASE_H</span></div> <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor"></span><span class="preprocessor">#define _GLIBCXX_DEBUG_SAFE_BASE_H 1</span></div> <div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include <<a class="code" href="a01053.html">ext/concurrence.h</a>></span></div> <div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div> <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">namespace </span>__gnu_debug</div> <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> {</div> <div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keyword">class </span>_Safe_sequence_base;</div> <div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"></span></div> <div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> /** \brief Basic functionality for a @a safe iterator.</span></div> <div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> *</span></div> <div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> * The %_Safe_iterator_base base class implements the functionality</span></div> <div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> * of a safe iterator that is not specific to a particular iterator</span></div> <div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * type. It contains a pointer back to the sequence it references</span></div> <div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> * along with iterator version information and pointers to form a</span></div> <div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> * doubly-linked list of iterators referenced by the container.</span></div> <div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> *</span></div> <div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> * This class must not perform any operations that can throw an</span></div> <div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> * exception, or the exception guarantees of derived iterators will</span></div> <div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> * be broken.</span></div> <div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"> */</span></div> <div class="line"><a name="l00051"></a><span class="lineno"><a class="code" href="a00085.html"> 51</a></span>  <span class="keyword">class </span><a class="code" href="a00085.html" title="Basic functionality for a safe iterator.">_Safe_iterator_base</a></div> <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  {</div> <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keyword">public</span>:<span class="comment"></span></div> <div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> /** The sequence this iterator references; may be NULL to indicate</span></div> <div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"> a singular iterator. */</span></div> <div class="line"><a name="l00056"></a><span class="lineno"><a class="code" href="a00085.html#a0ee820218a8e43841a84d866dc94f1e3"> 56</a></span>  <a class="code" href="a00089.html" title="Base class that supports tracking of iterators that reference a sequence.">_Safe_sequence_base</a>* <a class="code" href="a00085.html#a0ee820218a8e43841a84d866dc94f1e3">_M_sequence</a>;</div> <div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"></span></div> <div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment"> /** The version number of this iterator. The sentinel value 0 is</span></div> <div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment"> * used to indicate an invalidated iterator (i.e., one that is</span></div> <div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"> * singular because of an operation on the container). This</span></div> <div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"> * version number must equal the version number in the sequence</span></div> <div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"> * referenced by _M_sequence for the iterator to be</span></div> <div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment"> * non-singular.</span></div> <div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> */</span></div> <div class="line"><a name="l00065"></a><span class="lineno"><a class="code" href="a00085.html#ad07568d7660eb8b85493b548d10c637a"> 65</a></span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="a00085.html#ad07568d7660eb8b85493b548d10c637a">_M_version</a>;</div> <div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"></span></div> <div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"> /** Pointer to the previous iterator in the sequence's list of</span></div> <div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"> iterators. Only valid when _M_sequence != NULL. */</span></div> <div class="line"><a name="l00069"></a><span class="lineno"><a class="code" href="a00085.html#ad3aa8afe2713aba16a79e934cbe50f1c"> 69</a></span>  <a class="code" href="a00085.html" title="Basic functionality for a safe iterator.">_Safe_iterator_base</a>* <a class="code" href="a00085.html#ad3aa8afe2713aba16a79e934cbe50f1c">_M_prior</a>;</div> <div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment"></span></div> <div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"> /** Pointer to the next iterator in the sequence's list of</span></div> <div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"> iterators. Only valid when _M_sequence != NULL. */</span></div> <div class="line"><a name="l00073"></a><span class="lineno"><a class="code" href="a00085.html#ae1d73bfac68a69f3ffe56c0f0d4c6063"> 73</a></span>  <a class="code" href="a00085.html" title="Basic functionality for a safe iterator.">_Safe_iterator_base</a>* <a class="code" href="a00085.html#ae1d73bfac68a69f3ffe56c0f0d4c6063">_M_next</a>;</div> <div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div> <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keyword">protected</span>:<span class="comment"></span></div> <div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"> /** Initializes the iterator and makes it singular. */</span></div> <div class="line"><a name="l00077"></a><span class="lineno"><a class="code" href="a00085.html#a3e6e1cb37b5585e5ee3b254bbd7d5cbb"> 77</a></span>  <a class="code" href="a00085.html#a3e6e1cb37b5585e5ee3b254bbd7d5cbb">_Safe_iterator_base</a>()</div> <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  : <a class="code" href="a00085.html#a0ee820218a8e43841a84d866dc94f1e3">_M_sequence</a>(0), <a class="code" href="a00085.html#ad07568d7660eb8b85493b548d10c637a">_M_version</a>(0), <a class="code" href="a00085.html#ad3aa8afe2713aba16a79e934cbe50f1c">_M_prior</a>(0), <a class="code" href="a00085.html#ae1d73bfac68a69f3ffe56c0f0d4c6063">_M_next</a>(0)</div> <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  { }</div> <div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment"></span></div> <div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment"> /** Initialize the iterator to reference the sequence pointed to</span></div> <div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"> * by @p __seq. @p __constant is true when we are initializing a</span></div> <div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment"> * constant iterator, and false if it is a mutable iterator. Note</span></div> <div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment"> * that @p __seq may be NULL, in which case the iterator will be</span></div> <div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment"> * singular. Otherwise, the iterator will reference @p __seq and</span></div> <div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="comment"> * be nonsingular.</span></div> <div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment"> */</span></div> <div class="line"><a name="l00088"></a><span class="lineno"><a class="code" href="a00085.html#a74a667bf14e3feb71571c352430fcf12"> 88</a></span>  <a class="code" href="a00085.html#a3e6e1cb37b5585e5ee3b254bbd7d5cbb">_Safe_iterator_base</a>(<span class="keyword">const</span> <a class="code" href="a00089.html" title="Base class that supports tracking of iterators that reference a sequence.">_Safe_sequence_base</a>* __seq, <span class="keywordtype">bool</span> __constant)</div> <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  : <a class="code" href="a00085.html#a0ee820218a8e43841a84d866dc94f1e3">_M_sequence</a>(0), <a class="code" href="a00085.html#ad07568d7660eb8b85493b548d10c637a">_M_version</a>(0), <a class="code" href="a00085.html#ad3aa8afe2713aba16a79e934cbe50f1c">_M_prior</a>(0), <a class="code" href="a00085.html#ae1d73bfac68a69f3ffe56c0f0d4c6063">_M_next</a>(0)</div> <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  { this-><a class="code" href="a00085.html#a51809843192abdf6415ec0342fb0fdb9">_M_attach</a>(const_cast<_Safe_sequence_base*>(__seq), __constant); }</div> <div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"></span></div> <div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment"> /** Initializes the iterator to reference the same sequence that</span></div> <div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"> @p __x does. @p __constant is true if this is a constant</span></div> <div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment"> iterator, and false if it is mutable. */</span></div> <div class="line"><a name="l00095"></a><span class="lineno"><a class="code" href="a00085.html#a0993fe5b5c385572b6261e2100f01191"> 95</a></span>  <a class="code" href="a00085.html#a3e6e1cb37b5585e5ee3b254bbd7d5cbb">_Safe_iterator_base</a>(<span class="keyword">const</span> <a class="code" href="a00085.html" title="Basic functionality for a safe iterator.">_Safe_iterator_base</a>& __x, <span class="keywordtype">bool</span> __constant)</div> <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  : <a class="code" href="a00085.html#a0ee820218a8e43841a84d866dc94f1e3">_M_sequence</a>(0), <a class="code" href="a00085.html#ad07568d7660eb8b85493b548d10c637a">_M_version</a>(0), <a class="code" href="a00085.html#ad3aa8afe2713aba16a79e934cbe50f1c">_M_prior</a>(0), <a class="code" href="a00085.html#ae1d73bfac68a69f3ffe56c0f0d4c6063">_M_next</a>(0)</div> <div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  { this-><a class="code" href="a00085.html#a51809843192abdf6415ec0342fb0fdb9">_M_attach</a>(__x.<a class="code" href="a00085.html#a0ee820218a8e43841a84d866dc94f1e3">_M_sequence</a>, __constant); }</div> <div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div> <div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <a class="code" href="a00085.html" title="Basic functionality for a safe iterator.">_Safe_iterator_base</a>&</div> <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  operator=(<span class="keyword">const</span> <a class="code" href="a00085.html" title="Basic functionality for a safe iterator.">_Safe_iterator_base</a>&);</div> <div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div> <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keyword">explicit</span></div> <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <a class="code" href="a00085.html#a3e6e1cb37b5585e5ee3b254bbd7d5cbb">_Safe_iterator_base</a>(<span class="keyword">const</span> <a class="code" href="a00085.html" title="Basic functionality for a safe iterator.">_Safe_iterator_base</a>&);</div> <div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div> <div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  ~<a class="code" href="a00085.html" title="Basic functionality for a safe iterator.">_Safe_iterator_base</a>() { this-><a class="code" href="a00085.html#a8deb31273aaf1912a5540ae046581c54">_M_detach</a>(); }</div> <div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment"></span></div> <div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment"> /** For use in _Safe_iterator. */</span></div> <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  __gnu_cxx::__mutex& <a class="code" href="a00085.html#a8503df34e352af4f20a519bd5a2ffc10">_M_get_mutex</a>() throw ();</div> <div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div> <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  public:<span class="comment"></span></div> <div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="comment"> /** Attaches this iterator to the given sequence, detaching it</span></div> <div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="comment"> * from whatever sequence it was attached to originally. If the</span></div> <div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="comment"> * new sequence is the NULL pointer, the iterator is left</span></div> <div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment"> * unattached.</span></div> <div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment"> */</span></div> <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordtype">void</span> <a class="code" href="a00085.html#a51809843192abdf6415ec0342fb0fdb9">_M_attach</a>(_Safe_sequence_base* __seq, <span class="keywordtype">bool</span> __constant);</div> <div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment"></span></div> <div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment"> /** Likewise, but not thread-safe. */</span></div> <div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordtype">void</span> <a class="code" href="a00085.html#a45148b9f8f44371fedfd62f39827a18b">_M_attach_single</a>(_Safe_sequence_base* __seq, <span class="keywordtype">bool</span> __constant) throw ();</div> <div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="comment"></span></div> <div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"> /** Detach the iterator for whatever sequence it is attached to,</span></div> <div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> * if any.</span></div> <div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment"> */</span></div> <div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordtype">void</span> <a class="code" href="a00085.html#a8deb31273aaf1912a5540ae046581c54">_M_detach</a>();</div> <div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"></span></div> <div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment"> /** Likewise, but not thread-safe. */</span></div> <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordtype">void</span> <a class="code" href="a00085.html#af1899eb4a27c3de8a74e9bf24dc920b4">_M_detach_single</a>() throw ();</div> <div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment"></span></div> <div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"> /** Determines if we are attached to the given sequence. */</span></div> <div class="line"><a name="l00130"></a><span class="lineno"><a class="code" href="a00085.html#ae69cdad25054791e84529f85287261b8"> 130</a></span>  <span class="keywordtype">bool</span> <a class="code" href="a00085.html#ae69cdad25054791e84529f85287261b8">_M_attached_to</a>(const <a class="code" href="a00089.html" title="Base class that supports tracking of iterators that reference a sequence.">_Safe_sequence_base</a>* __seq)<span class="keyword"> const</span></div> <div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> <a class="code" href="a00085.html#a0ee820218a8e43841a84d866dc94f1e3">_M_sequence</a> == __seq; }</div> <div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment"></span></div> <div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment"> /** Is this iterator singular? */</span></div> <div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  _GLIBCXX_PURE <span class="keywordtype">bool</span> <a class="code" href="a00085.html#a9e0a963382b77c7d0de556fc23a821e6">_M_singular</a>() <span class="keyword">const</span> throw ();</div> <div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="comment"></span></div> <div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment"> /** Can we compare this iterator to the given iterator @p __x?</span></div> <div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment"> Returns true if both iterators are nonsingular and reference</span></div> <div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="comment"> the same sequence. */</span></div> <div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  _GLIBCXX_PURE <span class="keywordtype">bool</span> <a class="code" href="a00085.html#a116f8a9757b9966e5f62a92e00874235">_M_can_compare</a>(const <a class="code" href="a00085.html" title="Basic functionality for a safe iterator.">_Safe_iterator_base</a>& __x) const throw ();</div> <div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment"></span></div> <div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment"> /** Invalidate the iterator, making it singular. */</span></div> <div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordtype">void</span></div> <div class="line"><a name="l00143"></a><span class="lineno"><a class="code" href="a00085.html#a231c2eca561476c79c326ae696512cd2"> 143</a></span>  <a class="code" href="a00085.html#a231c2eca561476c79c326ae696512cd2">_M_invalidate</a>()</div> <div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  { <a class="code" href="a00085.html#ad07568d7660eb8b85493b548d10c637a">_M_version</a> = 0; }</div> <div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="comment"></span></div> <div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="comment"> /** Reset all member variables */</span></div> <div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordtype">void</span></div> <div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <a class="code" href="a00085.html#a1546bb95326eb29d175cb45140a128dd">_M_reset</a>() throw ();</div> <div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="comment"></span></div> <div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="comment"> /** Unlink itself */</span></div> <div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordtype">void</span></div> <div class="line"><a name="l00152"></a><span class="lineno"><a class="code" href="a00085.html#a15200550c9de14f693bd2fd9badbce2b"> 152</a></span>  <a class="code" href="a00085.html#a15200550c9de14f693bd2fd9badbce2b">_M_unlink</a>() throw ()</div> <div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  {</div> <div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">if</span> (<a class="code" href="a00085.html#ad3aa8afe2713aba16a79e934cbe50f1c">_M_prior</a>)</div> <div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <a class="code" href="a00085.html#ad3aa8afe2713aba16a79e934cbe50f1c">_M_prior</a>-><a class="code" href="a00085.html#ae1d73bfac68a69f3ffe56c0f0d4c6063">_M_next</a> = <a class="code" href="a00085.html#ae1d73bfac68a69f3ffe56c0f0d4c6063">_M_next</a>;</div> <div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">if</span> (<a class="code" href="a00085.html#ae1d73bfac68a69f3ffe56c0f0d4c6063">_M_next</a>)</div> <div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <a class="code" href="a00085.html#ae1d73bfac68a69f3ffe56c0f0d4c6063">_M_next</a>-><a class="code" href="a00085.html#ad3aa8afe2713aba16a79e934cbe50f1c">_M_prior</a> = <a class="code" href="a00085.html#ad3aa8afe2713aba16a79e934cbe50f1c">_M_prior</a>;</div> <div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  }</div> <div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  };</div> <div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="comment"></span></div> <div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="comment"> /**</span></div> <div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="comment"> * @brief Base class that supports tracking of iterators that</span></div> <div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="comment"> * reference a sequence.</span></div> <div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="comment"> *</span></div> <div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="comment"> * The %_Safe_sequence_base class provides basic support for</span></div> <div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="comment"> * tracking iterators into a sequence. Sequences that track</span></div> <div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="comment"> * iterators must derived from %_Safe_sequence_base publicly, so</span></div> <div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="comment"> * that safe iterators (which inherit _Safe_iterator_base) can</span></div> <div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="comment"> * attach to them. This class contains two linked lists of</span></div> <div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="comment"> * iterators, one for constant iterators and one for mutable</span></div> <div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="comment"> * iterators, and a version number that allows very fast</span></div> <div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="comment"> * invalidation of all iterators that reference the container.</span></div> <div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="comment"> *</span></div> <div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="comment"> * This class must ensure that no operation on it may throw an</span></div> <div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="comment"> * exception, otherwise @a safe sequences may fail to provide the</span></div> <div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="comment"> * exception-safety guarantees required by the C++ standard.</span></div> <div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="comment"> */</span></div> <div class="line"><a name="l00178"></a><span class="lineno"><a class="code" href="a00089.html"> 178</a></span>  <span class="keyword">class </span><a class="code" href="a00089.html" title="Base class that supports tracking of iterators that reference a sequence.">_Safe_sequence_base</a></div> <div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  {</div> <div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keyword">public</span>:<span class="comment"></span></div> <div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="comment"> /// The list of mutable iterators that reference this container</span></div> <div class="line"><a name="l00182"></a><span class="lineno"><a class="code" href="a00089.html#a9d678da43e3d7456af279062c4e5c28a"> 182</a></span> <span class="comment"></span> <a class="code" href="a00085.html" title="Basic functionality for a safe iterator.">_Safe_iterator_base</a>* <a class="code" href="a00089.html#a9d678da43e3d7456af279062c4e5c28a" title="The list of mutable iterators that reference this container.">_M_iterators</a>;</div> <div class="line"><a name="l00183"></a><span class="lineno"> 183</span> <span class="comment"></span></div> <div class="line"><a name="l00184"></a><span class="lineno"> 184</span> <span class="comment"> /// The list of constant iterators that reference this container</span></div> <div class="line"><a name="l00185"></a><span class="lineno"><a class="code" href="a00089.html#a5aabbc5d256f3eaaf313274ebf200877"> 185</a></span> <span class="comment"></span> <a class="code" href="a00085.html" title="Basic functionality for a safe iterator.">_Safe_iterator_base</a>* <a class="code" href="a00089.html#a5aabbc5d256f3eaaf313274ebf200877" title="The list of constant iterators that reference this container.">_M_const_iterators</a>;</div> <div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="comment"></span></div> <div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="comment"> /// The container version number. This number may never be 0.</span></div> <div class="line"><a name="l00188"></a><span class="lineno"><a class="code" href="a00089.html#af796b1fd115ea27cd078eeb7e4909bd5"> 188</a></span> <span class="comment"></span> <span class="keyword">mutable</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="a00089.html#af796b1fd115ea27cd078eeb7e4909bd5" title="The container version number. This number may never be 0.">_M_version</a>;</div> <div class="line"><a name="l00189"></a><span class="lineno"> 189</span> </div> <div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keyword">protected</span>:</div> <div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="comment">// Initialize with a version number of 1 and no iterators</span></div> <div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <a class="code" href="a00089.html" title="Base class that supports tracking of iterators that reference a sequence.">_Safe_sequence_base</a>()</div> <div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  : <a class="code" href="a00089.html#a9d678da43e3d7456af279062c4e5c28a" title="The list of mutable iterators that reference this container.">_M_iterators</a>(0), <a class="code" href="a00089.html#a5aabbc5d256f3eaaf313274ebf200877" title="The list of constant iterators that reference this container.">_M_const_iterators</a>(0), <a class="code" href="a00089.html#af796b1fd115ea27cd078eeb7e4909bd5" title="The container version number. This number may never be 0.">_M_version</a>(1)</div> <div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  { }</div> <div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="comment"></span></div> <div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="comment"> /** Notify all iterators that reference this sequence that the</span></div> <div class="line"><a name="l00197"></a><span class="lineno"> 197</span> <span class="comment"> sequence is being destroyed. */</span></div> <div class="line"><a name="l00198"></a><span class="lineno"><a class="code" href="a00089.html#a9061ce48f8c5627d61a2e4a72a43f479"> 198</a></span>  <a class="code" href="a00089.html#a9061ce48f8c5627d61a2e4a72a43f479">~_Safe_sequence_base</a>()</div> <div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  { this-><a class="code" href="a00089.html#acebac46f833f903deb7c094fc26cbea1">_M_detach_all</a>(); }</div> <div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="comment"></span></div> <div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="comment"> /** Detach all iterators, leaving them singular. */</span></div> <div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keywordtype">void</span></div> <div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <a class="code" href="a00089.html#acebac46f833f903deb7c094fc26cbea1">_M_detach_all</a>();</div> <div class="line"><a name="l00204"></a><span class="lineno"> 204</span> <span class="comment"></span></div> <div class="line"><a name="l00205"></a><span class="lineno"> 205</span> <span class="comment"> /** Detach all singular iterators.</span></div> <div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="comment"> * @post for all iterators i attached to this sequence,</span></div> <div class="line"><a name="l00207"></a><span class="lineno"> 207</span> <span class="comment"> * i->_M_version == _M_version.</span></div> <div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="comment"> */</span></div> <div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordtype">void</span></div> <div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <a class="code" href="a00089.html#aadde2fc883be085fc4588c1ef442cd3d">_M_detach_singular</a>();</div> <div class="line"><a name="l00211"></a><span class="lineno"> 211</span> <span class="comment"></span></div> <div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="comment"> /** Revalidates all attached singular iterators. This method may</span></div> <div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="comment"> * be used to validate iterators that were invalidated before</span></div> <div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="comment"> * (but for some reason, such as an exception, need to become</span></div> <div class="line"><a name="l00215"></a><span class="lineno"> 215</span> <span class="comment"> * valid again).</span></div> <div class="line"><a name="l00216"></a><span class="lineno"> 216</span> <span class="comment"> */</span></div> <div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordtype">void</span></div> <div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <a class="code" href="a00089.html#a75f6eb02cd1721b550bd5eb205ed6920">_M_revalidate_singular</a>();</div> <div class="line"><a name="l00219"></a><span class="lineno"> 219</span> <span class="comment"></span></div> <div class="line"><a name="l00220"></a><span class="lineno"> 220</span> <span class="comment"> /** Swap this sequence with the given sequence. This operation</span></div> <div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="comment"> * also swaps ownership of the iterators, so that when the</span></div> <div class="line"><a name="l00222"></a><span class="lineno"> 222</span> <span class="comment"> * operation is complete all iterators that originally referenced</span></div> <div class="line"><a name="l00223"></a><span class="lineno"> 223</span> <span class="comment"> * one container now reference the other container.</span></div> <div class="line"><a name="l00224"></a><span class="lineno"> 224</span> <span class="comment"> */</span></div> <div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordtype">void</span></div> <div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <a class="code" href="a00089.html#a0dab4a25feb468949f28f2820400cd8b">_M_swap</a>(<a class="code" href="a00089.html" title="Base class that supports tracking of iterators that reference a sequence.">_Safe_sequence_base</a>& __x);</div> <div class="line"><a name="l00227"></a><span class="lineno"> 227</span> <span class="comment"></span></div> <div class="line"><a name="l00228"></a><span class="lineno"> 228</span> <span class="comment"> /** For use in _Safe_sequence. */</span></div> <div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  __gnu_cxx::__mutex& <a class="code" href="a00089.html#aa245644963340f3dee07d384eeeb01f3">_M_get_mutex</a>() throw ();</div> <div class="line"><a name="l00230"></a><span class="lineno"> 230</span> </div> <div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  public:<span class="comment"></span></div> <div class="line"><a name="l00232"></a><span class="lineno"> 232</span> <span class="comment"> /** Invalidates all iterators. */</span></div> <div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordtype">void</span></div> <div class="line"><a name="l00234"></a><span class="lineno"><a class="code" href="a00089.html#a1e5eb0a6858097f7fbc476fa58cb8f22"> 234</a></span>  <a class="code" href="a00089.html#a1e5eb0a6858097f7fbc476fa58cb8f22">_M_invalidate_all</a>()<span class="keyword"> const</span></div> <div class="line"><a name="l00235"></a><span class="lineno"> 235</span> <span class="keyword"> </span>{ <span class="keywordflow">if</span> (++<a class="code" href="a00089.html#af796b1fd115ea27cd078eeb7e4909bd5" title="The container version number. This number may never be 0.">_M_version</a> == 0) <a class="code" href="a00089.html#af796b1fd115ea27cd078eeb7e4909bd5" title="The container version number. This number may never be 0.">_M_version</a> = 1; }</div> <div class="line"><a name="l00236"></a><span class="lineno"> 236</span> <span class="comment"></span></div> <div class="line"><a name="l00237"></a><span class="lineno"> 237</span> <span class="comment"> /** Attach an iterator to this sequence. */</span></div> <div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordtype">void</span></div> <div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <a class="code" href="a00089.html#ab4d477bee04a7c71f2f3ac04667b63c2">_M_attach</a>(<a class="code" href="a00085.html" title="Basic functionality for a safe iterator.">_Safe_iterator_base</a>* __it, <span class="keywordtype">bool</span> __constant);</div> <div class="line"><a name="l00240"></a><span class="lineno"> 240</span> <span class="comment"></span></div> <div class="line"><a name="l00241"></a><span class="lineno"> 241</span> <span class="comment"> /** Likewise but not thread safe. */</span></div> <div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordtype">void</span></div> <div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <a class="code" href="a00089.html#ad5c931183ca6fac813724ea31fc537b8">_M_attach_single</a>(<a class="code" href="a00085.html" title="Basic functionality for a safe iterator.">_Safe_iterator_base</a>* __it, <span class="keywordtype">bool</span> __constant) <span class="keywordflow">throw</span> ();</div> <div class="line"><a name="l00244"></a><span class="lineno"> 244</span> <span class="comment"></span></div> <div class="line"><a name="l00245"></a><span class="lineno"> 245</span> <span class="comment"> /** Detach an iterator from this sequence */</span></div> <div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keywordtype">void</span></div> <div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <a class="code" href="a00089.html#a1f75fb78e5fdd2fb5242751fe1ad2dd3">_M_detach</a>(<a class="code" href="a00085.html" title="Basic functionality for a safe iterator.">_Safe_iterator_base</a>* __it);</div> <div class="line"><a name="l00248"></a><span class="lineno"> 248</span> <span class="comment"></span></div> <div class="line"><a name="l00249"></a><span class="lineno"> 249</span> <span class="comment"> /** Likewise but not thread safe. */</span></div> <div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordtype">void</span></div> <div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <a class="code" href="a00089.html#ab532ee20093a89d4b9d38a3cd4873fd8">_M_detach_single</a>(<a class="code" href="a00085.html" title="Basic functionality for a safe iterator.">_Safe_iterator_base</a>* __it) <span class="keywordflow">throw</span> ();</div> <div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  };</div> <div class="line"><a name="l00253"></a><span class="lineno"> 253</span> } <span class="comment">// namespace __gnu_debug</span></div> <div class="line"><a name="l00254"></a><span class="lineno"> 254</span> </div> <div class="line"><a name="l00255"></a><span class="lineno"> 255</span> <span class="preprocessor">#endif</span></div> </div><!-- fragment --></div><!-- contents --> </div><!-- doc-content --> <!-- start footer part --> <div id="nav-path" class="navpath"><!-- id is needed for treeview function! --> <ul> <li class="navelem"><a class="el" href="dir_9fd2c24bcafa2f71ff52c79e6ae82b6c.html">include</a></li><li class="navelem"><a class="el" href="dir_88401734f095653667b729aca77f9248.html">debug</a></li><li class="navelem"><a class="el" href="a01430.html">safe_base.h</a></li> <li class="footer">Generated by <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.3 </li> </ul> </div> </body> </html>