windows編程之多線程同步

#include <windows.h>
#include <iostream.h>

DWORD WINAPI Fun1Proc(
LPVOID lpParameter //thread data
);

DWORD WINAPI Fun2Proc(
LPVOID lpParameter //thread data
);

int tickets = 100,num = 0;

HANDLE g_hEvent;
void main()
{
    HANDLE hThread1,hThread2;//創建線程的句柄
    hThread1 = CreateThread(NULL,0,Fun1Proc,NULL,0,NULL);//創建一個線程
    hThread2 = CreateThread(NULL,0,Fun2Proc,NULL,0,NULL);//創建一個線程
    CloseHandle(hThread1);//關閉句柄，並沒有終止新創建的線程
    CloseHandle(hThread2);//關閉句柄，並沒有終止新創建的線程
    //爲了線程間同步不要採用人工事件對象
    g_hEvent = CreateEvent(NULL,FALSE,FALSE,NULL);//創建自動事件對象，初始狀態設置爲了非信號狀態

    Sleep(8000);
    CloseHandle(g_hEvent);
}

DWORD WINAPI Fun1Proc(
LPVOID lpParameter //thread data
)
{
    while(TRUE)
    {
        WaitForSingleObject(g_hEvent,INFINITE);//申請事件對象，是否有信號
        //ResetEvent(g_hEvent);
        if (tickets > 0){
            Sleep(100);
            num++;
            cout << "thread1 sell ticket : " << tickets-- << endl;
        }
        else{
            cout << num << endl;
            break;
        }
        SetEvent(g_hEvent);
    }
   
    return 0;
}

DWORD WINAPI Fun2Proc(
LPVOID lpParameter //thread data
)
{   
    while(TRUE)
    {
        WaitForSingleObject(g_hEvent,INFINITE);
        //ResetEvent(g_hEvent);
        if (tickets > 0){
            num++;
            Sleep(1);
            cout << "thread2 sell ticket : " << tickets-- << endl;
        }
        else{
            cout << num << endl;
            break;
        }
        SetEvent(g_hEvent);
    }
    return 0;
}