MSDN?--?Synchronization?Functions?

1.?使用臨界區對象(CRITICAL_SECTION)

創建線程?unsigned?long?_beginthreadex(void?*security?,?unsigned?stack_size,

Unsigned(_stdcall?*start_address)(void?*),void?*arglist,?unsigned?initflag,

Unsigned?*thraaddr)

結束線程?void?_endthreadex(unsigned?retval);

初始化臨界區?InitializeCriticalSection(LPCRITICAL_SECTION?lpCriticalSection);

進入臨界區?EnterCriticalSection(?LPCRITICAL_SECTION?lpCriticalSection);

離開臨界區?void?LeaveCriticalSection(LPCRITICAL_SECTION?lpCriticalSection);

刪除臨界區?void?DeleteCriticalSection(LPCRITICAL_SECTION?lpCriticalSection);

#include?<windows.h>

#include?<stdio.h>

#include?<process.h>

BOOL?g_bContinue?=?TRUE;

int?g_nCount1?=?0;

int?g_nCount2?=?0;

CRITICAL_SECTION?g_cs;

UINT?WINAPI?ThreadProc(LPVOID?lpParam){

while?(g_bContinue)

{

EnterCriticalSection(&g_cs);

g_nCount1++;

g_nCount2?++;

LeaveCriticalSection(&g_cs);

}

return?0;

}

int?main(int?argc,char?*argv[]){

UINT?uId;

HANDLE?hThreads[2];

//初始化臨界區

InitializeCriticalSection(&g_cs);

hThreads[0]?=?(HANDLE)_beginthreadex(NULL,0,ThreadProc,NULL,0,&uId);

hThreads[1]?=?(HANDLE)_beginthreadex(NULL,0,ThreadProc,NULL,0,&uId);

Sleep(1000);

g_bContinue?=?FALSE;

WaitForMultipleObjects(2,hThreads,TRUE,INFINITE);

CloseHandle(hThreads[0]);

CloseHandle(hThreads[1]);

DeleteCriticalSection(&g_cs);

printf("g_nCount1=%d\tg_nCount2=%d\n",g_nCount1,g_nCount2);

return?0;

}

2.?互鎖函數

InterlockedIncrement?InterlockedDecrement?InterlockedExchangAdd?InterlockedExchangePointer

函數同步增一、減一

LONG?InterlockedIncrement(LONG?volatile?*Addend);

LongInterlockedDecrement(LONG?volatile?*Addend);

轉載于:https://www.cnblogs.com/cody1988/archive/2011/09/04/2166679.html

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