C++ Thread

一 简单实例
比较简单的代码，创建10个线程，其中使第4个线程在一创建就挂起，等到其他的线程执行的差不多的时候再使第4个线程恢复执行。

 #include <stdio.h> #include <stdlib.h> #include <windows.h> #define THREAD_NUM 10 DWORD WINAPI PrintThreads (LPVOID); int main () { HANDLE hThread[THREAD_NUM]; DWORD dwThreadID[THREAD_NUM]; for (int i=0; i<THREAD_NUM; ++i) { int isStartImmediate = 0;if(3 == i)isStartImmediate = CREATE_SUSPENDED;hThread[i]=CreateThread(NULL,0,PrintThreads,(LPVOID)i,isStartImmediate,&dwThreadID[i]); if (hThread[i]){ printf ("Thread launched successfully/n"); } } printf("Start sleep 100, and let other thread excute/n");Sleep (100); printf("Start sleep 100, and thread 3 excute/n");ResumeThread(hThread[3]);Sleep(100);for(int i = 0; i<THREAD_NUM; ++i){if (hThread[i]){ // You need to use this to release kernel objects //when you are done using them. // If a process exits without closing the thread handle, // the operating system drops the reference counts for those objects. // But if a process frequently creates threads without closing the handles, // there could be hundreds of thread kernel objects lying around and these //resource leaks can have a big hit on performance.CloseHandle(hThread[i]); } }return (0); } //function PrintThreads DWORD WINAPI PrintThreads (LPVOID num){for (int i=0; i<10; i++) printf ("Thread Number is %d%d%d/n", num,num,num); return 0;}