使用关键节对象

以下示例演示线程如何初始化、输入和释放 关键节。 它使用 InitializeCriticalSectionAndSpinCount、 EnterCriticalSection、 LeaveCriticalSection 和 DeleteCriticalSection 函数。

// Global variable
CRITICAL_SECTION CriticalSection; 

int main( void )
{
    ...

    // Initialize the critical section one time only.
    if (!InitializeCriticalSectionAndSpinCount(&CriticalSection, 
        0x00000400) ) 
        return;
    ...

    // Release resources used by the critical section object.
    DeleteCriticalSection(&CriticalSection);
}

DWORD WINAPI ThreadProc( LPVOID lpParameter )
{
    ...

    // Request ownership of the critical section.
    EnterCriticalSection(&CriticalSection); 

    // Access the shared resource.

    // Release ownership of the critical section.
    LeaveCriticalSection(&CriticalSection);

    ...
return 1;
}