Windows多线程技术

最新推荐文章于 2020-11-14 22:17:54 发布

原创最新推荐文章于 2020-11-14 22:17:54 发布 · 645 阅读

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#多线程 #线程

创建两个线程MyThreadProc1和MyThreadProc2；

#include <windows.h>
#include <iostream>
#include <stdlib.h>
using namespace std;

DWORD WINAPI MyThreadProc1(LPVOID lpParameter);
DWORD WINAPI MyThreadProc2(LPVOID lpParameter);
int index = 0;
int i = 0 , y = 0;
int main()
{
    HANDLE handle1,handle2;
    handle1 = CreateThread(NULL,0,MyThreadProc1,NULL,0,NULL);
    handle2 = CreateThread(NULL,0,MyThreadProc2,NULL,0,NULL);

    if(NULL == handle1)
    {
        cout<<"Create Thread failed !"<<endl;
        return -1;
    }
    if(NULL == handle2)
    {
        cout<<"Create Thread failed !"<<endl;
        return -1;
    }

    CloseHandle(handle1);
    CloseHandle(handle2);

    cout<<"The Main Thread is Running !"<<endl;

    system("PAUSE");
    return 0;
}
DWORD WINAPI MyThreadProc1(LPVOID lpParameter)
{

    cout<<"The MyThreadProc1 is Running !"<<endl;

    return 0;
}
DWORD WINAPI MyThreadProc2(LPVOID lpParameter)
{

    cout<<"The MyThreadProc2 is Running ! "<<endl;
    return 0;
}

对线程进行参数传递。注意传递多个参数需要创建结构体，然后使用(void *)空类型对创建的结构体进行传递。

现在我们能建立了一个线程了，我们可以从函数的原型看到，在创建线程的时候，是可以在对我们的函数进行传递参数，在pthread_create的第四个行参。我们看一下例题2~3.
    例题2
    功能：向新的线程传递整形值
    程序名称：pthread_int.c

#include <stdio.h>
#include <pthread.h>
#include <unistd.h>
void *create(void *arg)
...{
    int *num;
    num=(int *)arg;
    printf("create parameter is %d  ",*num);
    return (void *)0;
}
int main(int argc ,char *argv[])
...{
    pthread_t tidp;
    int error;

    int test=4;
    int *attr=&test;

    error=pthread_create(&tidp,NULL,create,(void *)attr);
    if(error!=0)
    ...{
        printf("pthread_create is created is not created ... ");
        return -1;
    }
    sleep(1);
    printf("pthread_create is created is  created ... ");
    return 0;
}