线程控制

三个函数的使用

1，WaitForSingleObject

#include <Windows.h>

DWORD WINAPI MyThread(LPVOID lpParameter)
{
    //ziji de code
}

int main()
{
    HANDLE hThread;
    hThread = CreateThread(NULL,0,MyThread,NULL,0,NULL);
    CloseHandle(hThread);
    WaitForSingleObject(hThread,INFINITE);//等待hThread线程执行完毕再往下走
    printf("hThread线程执行完毕。。。");
    return 0;
}

2，WaitForMultipleObjects

DWORD WaitForMultipleObjects(
  DWORD        nCount,
  const HANDLE *lpHandles,
  BOOL         bWaitAll,//TRUE-所有线程状态发生改变时，FALSE-任何一个线程状态发生改变时
  DWORD        dwMilliseconds
);

3，GetExitCodeThread

获取线程返回值，根据返回值，判断如何执行后续代码

#include <Windows.h>

DWORD WINAPI MyThread1(LPVOID lpParameter)
{
    DWORD oneCode;
    //ziji de code
    return oneCode;
}
DWORD WINAPI MyThread2(LPVOID lpParameter)
{    DWORD oneCode;
    //ziji de code
    return oneCode;
}

int main()
{
    HANDLE hThread1;
    HANDLE hThread2;
    DWORD dwThreadResult1;
    DWORD dwThreadResult2;
    //创建多个线程，可以使用同一份线程代码，创建的是不同的堆栈，下面都使用了MyThread线程函数的代码
    hThread1 = CreateThread(NULL,0,MyThread1,NULL,0,NULL);
    hThread2 = CreateThread(NULL,0,MyThread2,NULL,0,NULL);
    GetExitCodeThread(hThread1,&dwThreadResult1);//获取线程返回值，根据返回值，执行后续代码 if ...if ...
    GetExitCodeThread(hThread2,&dwThreadResult2);
    CloseHandle(hThread1);
    CloseHandle(hThread2);
    return 0;
}