互斥量介面：

1.建立互斥量：
HANDLE CreateMutex
(
    LPSECURITY_ATTRIBUTES lpMutexAttributes,//安全控制，一般為NULL
    BOOL bInitialOwner,                     //互斥量的初始擁有者
    LPCTSTR lpName                          //互斥量的名稱
);
2.開啟互斥量
HANDLE OpenMutex
(
    DWORD dwDesireAccess,       //引數訪問許可權，一般為MUTEX_ALL_ACCESS
    BOOL
 
 bInheritHandle,        //互斥量控制代碼繼承性，一般為true
    LPCTSTR lpName              //互斥量名稱
);
3.觸發互斥量
BOOL ReleaseMutex(HANDLE hMutex);

互斥量測試程式碼如下所示：

#include <Windows.h>
#include <process.h>
#include <stdio.h>

#define THREAD_NUM 10

unsigned long g_nNum;

HANDLE g_hThreadParameter;
CRITICAL_SECTION g_csThreadCode;

unsigned
 
 int __stdcall ThreadFun(void *pM)
{
    int nThreadNum = *(int *)pM;

    ReleaseMutex(g_hThreadParameter);

    Sleep(50);

    EnterCriticalSection(&g_csThreadCode);
    g_nNum++;

    Sleep(0);

    printf("執行緒編號為%d  全域性資源值為%d\n", nThreadNum, g_nNum);

    LeaveCriticalSection(&g_csThreadCode);

    return
 
 0;
}


int main()
{
    HANDLE handle[THREAD_NUM];
    int i = 0;
    g_hThreadParameter = CreateMutex(NULL, 0, NULL);
    InitializeCriticalSection(&g_csThreadCode);

    printf("--------------------執行緒同步之互斥量--------------------\n");


    while(i < THREAD_NUM)
    {
        handle[i] = (HANDLE)_beginthreadex(NULL, 0, ThreadFun, &i, 0, NULL);
        WaitForSingleObject(g_hThreadParameter, INFINITE);
        i++;
    }

    WaitForMultipleObjects(THREAD_NUM, handle, 1, INFINITE);

    CloseHandle(g_hThreadParameter);

    DeleteCriticalSection(&g_csThreadCode);

    for(i = 0; i < THREAD_NUM; i++)
    {
        CloseHandle(handle[i]);
    }


    system("pause");

    return 0;
}

以上程式碼在Visual Studio 2010中的執行結果如下：

可見執行緒同步問題沒有得到好的解決。
互斥量是核心物件，它與關鍵段都有“執行緒所有權”所以不能用於執行緒的同步。