使用_beginthreadex()创建线程

#include
#include // for STL string class
#include // for HANDLE
#include // for _beginthread()
using namespace std;class ThreadX
{
private:int loopStart;int loopEnd;int dispFrequency;
public:string threadName;ThreadX( int startValue, int endValue, int frequency ){loopStart &＃61; startValue;loopEnd &＃61; endValue;dispFrequency &＃61; frequency;}static unsigned __stdcall ThreadStaticEntryPoint(void * pThis){ThreadX * pthX &＃61; (ThreadX*)pThis; // the tricky castpthX->ThreadEntryPoint(); // now call the true entry-point-functionreturn 1; // the thread exit code}void ThreadEntryPoint(){for (int i &＃61; loopStart; i <&＃61; loopEnd; &＃43;&＃43;i){if (i % dispFrequency &＃61;&＃61; 0){printf( "%s: i &＃61; %d\n", threadName.c_str(), i );}}printf( "%s thread terminating\n", threadName.c_str() );}
};int main()
{ThreadX * o1 &＃61; new ThreadX( 0, 1, 2000 );HANDLE hth1;unsigned uiThread1ID;hth1 &＃61; (HANDLE)_beginthreadex( NULL, // security0, // stack sizeThreadX::ThreadStaticEntryPoint,o1, // arg listCREATE_SUSPENDED, // so we can later call ResumeThread()&uiThread1ID );if ( hth1 &＃61;&＃61; 0 )printf("Failed to create thread 1\n");DWORD dwExitCode;GetExitCodeThread( hth1, &dwExitCode ); // should be STILL_ACTIVE &＃61; 0x00000103 &＃61; 259printf( "initial thread 1 exit code &＃61; %u\n", dwExitCode );o1->threadName &＃61; "t1";ThreadX * o2 &＃61; new ThreadX( -100000, 0, 2000 );HANDLE hth2;unsigned uiThread2ID;hth2 &＃61; (HANDLE)_beginthreadex( NULL, // security0, // stack sizeThreadX::ThreadStaticEntryPoint,o2, // arg listCREATE_SUSPENDED, // so we can later call ResumeThread()&uiThread2ID );if ( hth2 &＃61;&＃61; 0 )printf("Failed to create thread 2\n");GetExitCodeThread( hth2, &dwExitCode ); // should be STILL_ACTIVE &＃61; 0x00000103 &＃61; 259printf( "initial thread 2 exit code &＃61; %u\n", dwExitCode );o2->threadName &＃61; "t2";ResumeThread( hth1 ); // serves the purpose of Jaeschke&＃39;s t1->Start()ResumeThread( hth2 ); WaitForSingleObject( hth1, INFINITE );WaitForSingleObject( hth2, INFINITE );GetExitCodeThread( hth1, &dwExitCode );printf( "thread 1 exited with code %u\n", dwExitCode );GetExitCodeThread( hth2, &dwExitCode );printf( "thread 2 exited with code %u\n", dwExitCode );CloseHandle( hth1 );CloseHandle( hth2 );delete o1;o1 &＃61; NULL;delete o2;o2 &＃61; NULL;printf("Primary thread terminating.\n");return 0;
}

注意&＃xff1a;
&＃xff08;1&＃xff09;如果你正在编写C/C&＃43;&＃43;代码&＃xff0c;决不应该调用CreateThread。相反&＃xff0c;应该使用VisualC&＃43;&＃43;运行期库函数_beginthreadex&＃xff0c;退出也应该使用_endthreadex。如果不使用Microsoft的VisualC&＃43;&＃43;编译器&＃xff0c;你的编译器供应商有它自己的CreateThread替代函数。不管这个替代函数是什么&＃xff0c;你都必须使用。
&＃xff08;2&＃xff09;因为_beginthreadex和_endthreadex是CRT线程函数&＃xff0c;所以必须注意编译选项runtimelibaray的选择&＃xff0c;使用MT或MTD。[MultiThreaded , Debug MultiThreaded]。
&＃xff08;3&＃xff09;_beginthreadex函数的参数列表与CreateThread函数的参数列表是相同的&＃xff0c;但是参数名和类型并不完全相同。这是因为Microsoft的C/C&＃43;&＃43;运行期库的开发小组认为&＃xff0c;C/C&＃43;&＃43;运行期函数不应该对Windows数据类型有任何依赖。_beginthreadex函数也像CreateThread那样&＃xff0c;返回新创建的线程的句柄。
&＃xff08;4&＃xff09;C&＃43;&＃43;主线程的终止&＃xff0c;同时也会终止所有主线程创建的子线程&＃xff0c;不管子线程有没有执行完毕。所以上面的代码中如果不调用WaitForSingleObject&＃xff0c;则2个子线程t1和t2可能并没有执行完毕或根本没有执行。
&＃xff08;5&＃xff09;如果某线程挂起&＃xff0c;然后有调用WaitForSingleObject等待该线程&＃xff0c;就会导致死锁。所以上面的代码如果不调用resumethread&＃xff0c;则会死锁。