线程池QueueUserWorkItem

// Test1.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <assert.h>
#include <Windows.h>

DWORD WINAPI TestThreadPool(PVOID pContext);

CRITICAL_SECTION g_cs;

int _tmain(int argc, _TCHAR* argv[])
{
InitializeCriticalSection(&g_cs);
SECURITY_ATTRIBUTES sa;
sa.bInheritHandle = TRUE;
sa.nLength = sizeof(SECURITY_ATTRIBUTES);
sa.lpSecurityDescriptor = NULL;

HANDLE hSemaphore = CreateSemaphoreW(&sa, 0 ,1, L"jyytet");

for (int i = 0; i < 10; i++)
{
QueueUserWorkItem(TestThreadPool, L"Hello World", WT_EXECUTEDEFAULT);
}
QueueUserWorkItem(TestThreadPool, L"Finish", WT_EXECUTEDEFAULT);

WaitForSingleObject(hSemaphore, -1);
CloseHandle(hSemaphore);
hSemaphore = NULL;
DeleteCriticalSection(&g_cs);

wprintf(L"Game over /r/n");

getchar();

return 0;
}

DWORD WINAPI TestThreadPool(PVOID pContext)
{
if (NULL == pContext)
return 0;

EnterCriticalSection(&g_cs);
wchar_t *pPrintf = (wchar_t *) pContext;
wprintf(L"%s /r/n", pPrintf);
Sleep(1000);

if (wcscmp(pPrintf, L"Finish") == 0)
{
HANDLE hSemaphore = OpenSemaphoreW(SEMAPHORE_ALL_ACCESS, FALSE, L"jyytet");
assert(hSemaphore != NULL);
ReleaseSemaphore(hSemaphore, 1, NULL);
CloseHandle(hSemaphore);
}
LeaveCriticalSection(&g_cs);

return 1;
}