windows和linux下等待线程的退出

来源：互联网发布：透视变换算法编辑：程序博客网时间：2024/04/30 05:07

在linux上，创建一个线程然后在主进程中等待线程的退出，系统提供的api是比较显而易见的，创建线程使用pthread_create，线程退出使用pthread_exit，主线程等待线程退出使用pthread_join，下面就是在等待一个睡眠5S的线程退出例子，我们也可以获取到线程退出时传递的一些消息。

#include <stdio.h>#include <unistd.h>#include <stdlib.h>#include <pthread.h>void *thread_function(void *arg) {char *code = "1";sleep(5);pthread_exit( code );}

int main() {    int res;    pthread_t a_thread;    void *thread_result;    res = pthread_create(&a_thread, NULL, thread_function, NULL);    if (res != 0) {        perror("Thread creation failed");        exit(EXIT_FAILURE);    }    printf("\nWaiting for thread to finish...\n");    res = pthread_join(a_thread, &thread_result);    if (res != 0) {        perror("Thread join failed");        exit(EXIT_FAILURE);    }printf("Exit code is %s\n", (char *)thread_result);    exit(EXIT_SUCCESS);}

在windows上，我们同样可以实现该功能，实现如下：

#include "stdafx.h"#include <Windows.h>LRESULT WINAPI ThreadFunction(LPARAM lp){Sleep(5000);return 2;}

int _tmain(int argc, _TCHAR* argv[]){DWORD dwCode;HANDLE hThread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)ThreadFunction, NULL, 0, NULL);printf("Waiting for thread to finish...\n");WaitForSingleObject(hThread, INFINITE);/* 等待线程退出 */GetExitCodeThread(hThread, &dwCode);printf("Exit code is %d\n", dwCode);CloseHandle(hThread);return 0;}

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