<!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"/> <title>GNU CommonC++: thread1.cpp</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <link href="doxygen.css" rel="stylesheet" type="text/css"/> </head> <body> <!-- Generated by Doxygen 1.6.3 --> <div class="navigation" id="top"> <div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="namespaces.html"><span>Namespaces</span></a></li> <li><a href="annotated.html"><span>Classes</span></a></li> <li><a href="files.html"><span>Files</span></a></li> <li><a href="examples.html"><span>Examples</span></a></li> </ul> </div> </div> <div class="contents"> <h1>thread1.cpp</h1><div class="fragment"><pre class="fragment"><span class="preprocessor">#include <<a class="code" href="thread_8h.html" title="Synchronization and threading services.">cc++/thread.h</a>></span> <span class="preprocessor">#include <cstdio></span> <span class="preprocessor">#ifdef CCXX_NAMESPACES</span> <span class="preprocessor"></span><span class="keyword">using namespace </span>ost; <span class="preprocessor">#endif</span> <span class="preprocessor"></span> <span class="comment">// This is a little regression test</span> <span class="comment">//</span> <span class="keyword">class </span>ThreadTest: <span class="keyword">public</span> <a name="_a0"></a><a class="code" href="classost_1_1_thread.html" title="Every thread of execution in an application is created by instantiating an object...">Thread</a> { <span class="keyword">public</span>: ThreadTest(); <span class="keywordtype">void</span> <a name="a1"></a><a class="code" href="classost_1_1_thread.html#add7d339d94b8a1ed2b2b0324a95b7e74" title="All threads execute by deriving the Run method of Thread.">run</a>(); }; <span class="keyword">volatile</span> <span class="keywordtype">int</span> n = 0; <span class="keywordtype">bool</span> WaitNValue(<span class="keywordtype">int</span> value) { <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0;; ++i) { <span class="keywordflow">if</span> (n == value) <span class="keywordflow">break</span>; <span class="keywordflow">if</span> (i >= 100) <span class="keywordflow">return</span> <span class="keyword">false</span>; Thread::sleep(10); } <span class="keywordflow">return</span> <span class="keyword">true</span>; } <span class="keywordtype">bool</span> WaitChangeNValue(<span class="keywordtype">int</span> value) { <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0;; ++i) { <span class="keywordflow">if</span> (n != value) <span class="keywordflow">break</span>; <span class="keywordflow">if</span> (i >= 100) <span class="keywordflow">return</span> <span class="keyword">false</span>; Thread::sleep(10); } <span class="keywordflow">return</span> <span class="keyword">true</span>; } ThreadTest::ThreadTest() { } <span class="keywordtype">void</span> <a class="code" href="classost_1_1_thread.html#add7d339d94b8a1ed2b2b0324a95b7e74" title="All threads execute by deriving the Run method of Thread.">ThreadTest::run</a>() { setCancel(Thread::cancelDeferred); n = 1; <span class="comment">// wait for main thread</span> <span class="keywordflow">if</span> (!WaitNValue(2)) <span class="keywordflow">return</span>; <span class="comment">// increment infinitely</span> <span class="keywordflow">for</span>(;;) { yield(); n = n+1; } } <span class="keywordtype">bool</span> TestChange(<span class="keywordtype">bool</span> shouldChange) { <span class="keywordflow">if</span> (shouldChange) printf(<span class="stringliteral">"- thread should change n..."</span>); <span class="keywordflow">else</span> printf(<span class="stringliteral">"- thread should not change n..."</span>); <span class="keywordflow">if</span> (WaitChangeNValue(n) == shouldChange) { printf(<span class="stringliteral">"ok\n"</span>); <span class="keywordflow">return</span> <span class="keyword">true</span>; } printf(<span class="stringliteral">"ko\n"</span>); <span class="keywordflow">return</span> <span class="keyword">false</span>; } <span class="preprocessor">#undef ERROR</span> <span class="preprocessor"></span><span class="preprocessor">#undef OK</span> <span class="preprocessor"></span><span class="preprocessor">#define ERROR {printf("ko\n"); return 1; }</span> <span class="preprocessor"></span><span class="preprocessor">#define OK {printf("ok\n"); }</span> <span class="preprocessor"></span> <span class="preprocessor">#define TEST_CHANGE(b) if (!TestChange(b)) return 1;</span> <span class="preprocessor"></span> <span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span>* argv[]) { ThreadTest test; <span class="comment">// test only thread, without sincronization</span> printf(<span class="stringliteral">"***********************************************\n"</span>); printf(<span class="stringliteral">"* Testing class Thread without syncronization *\n"</span>); printf(<span class="stringliteral">"***********************************************\n"</span>); printf(<span class="stringliteral">"Testing thread creation\n\n"</span>); n = 0; test.start(); <span class="comment">// wait for n == 1</span> printf(<span class="stringliteral">"- thread should set n to 1..."</span>); <span class="keywordflow">if</span> (WaitNValue(1)) OK <span class="keywordflow">else</span> ERROR; <span class="comment">// increment number in thread</span> printf(<span class="stringliteral">"\nTesting thread is working\n\n"</span>); n = 2; TEST_CHANGE(<span class="keyword">true</span>); TEST_CHANGE(<span class="keyword">true</span>); <span class="comment">// suspend thread, variable should not change</span> printf(<span class="stringliteral">"\nTesting suspend & resume\n\n"</span>); test.suspend(); TEST_CHANGE(<span class="keyword">false</span>); TEST_CHANGE(<span class="keyword">false</span>); <span class="comment">// resume, variable should change</span> test.resume(); TEST_CHANGE(<span class="keyword">true</span>); TEST_CHANGE(<span class="keyword">true</span>); printf(<span class="stringliteral">"\nTesting recursive suspend & resume\n\n"</span>); test.suspend(); test.suspend(); TEST_CHANGE(<span class="keyword">false</span>); TEST_CHANGE(<span class="keyword">false</span>); test.resume(); TEST_CHANGE(<span class="keyword">false</span>); TEST_CHANGE(<span class="keyword">false</span>); test.resume(); TEST_CHANGE(<span class="keyword">true</span>); TEST_CHANGE(<span class="keyword">true</span>); printf(<span class="stringliteral">"\nTesting no suspend on resume\n\n"</span>); test.resume(); TEST_CHANGE(<span class="keyword">true</span>); TEST_CHANGE(<span class="keyword">true</span>); <span class="comment">// suspend thread, variable should not change</span> printf(<span class="stringliteral">"\nTesting resuspend\n\n"</span>); test.suspend(); TEST_CHANGE(<span class="keyword">false</span>); TEST_CHANGE(<span class="keyword">false</span>); printf(<span class="stringliteral">"\nNow program should finish... :)\n"</span>); test.resume(); <span class="keywordflow">return</span> 0; } </pre></div> </div> <hr class="footer"/><address style="text-align: right;"><small>Generated on Fri Nov 12 09:55:46 2010 for GNU CommonC++ by <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.3 </small></address> </body> </html>