C语言 多线程测试

1、CreateThread 在主线程的基础上创建一个新线程

2、WaitForMultipleObjects 主线程等待子线程

3、CloseHandle 关闭线程

 1 // testThread.cpp : 定义控制台应用程序的入口点。
 2
 3 #include "stdafx.h"
 4 #include "windows.h"
 5
 6 #define MAX_THREADS 3
 7
 8 //子线程函数
 9 DWORD WINAPI ThreadFun(LPVOID pM)
10 {
11     printf("\n我是子线程：%d\n",pM);
12     printf("子线程的线程ID号为：%d\n", GetCurrentThreadId());
13     return 0;
14 }
15
16 int _tmain(int argc, _TCHAR* argv[])
17 {
18     printf("我是主线程\n");
19
20     //HANDLE handle = CreateThread(NULL, 0, ThreadFun, NULL, 0, NULL);
21     //WaitForSingleObject(handle, INFINITE);
22
23     HANDLE hThread[MAX_THREADS];
24     int i;
25     for(i = 0; i < MAX_THREADS; i++){
26         hThread[i] = CreateThread(NULL, 0, ThreadFun,(LPVOID *) i, 0, NULL);  //创建多线程
27     }
28     if(hThread[i]==NULL)
29     {
30         ExitProcess(i);//退出进程
31     }else{
32         printf("hThread:,%d\n",hThread[i]);
33     }
34
35     WaitForMultipleObjects(MAX_THREADS,hThread,TRUE,INFINITE);//主线程等待子线程结束
36
37     for(i = 0; i < MAX_THREADS; i++){
38          CloseHandle(hThread[i]);//关闭线程
39     }
40
41     return 0;
42 }

测试结果如下：