线程池面试题_动态线程池

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// 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;
}

// 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;}