Win32Mutex.cppGo to the documentation of this file.00001 /* 00002 * Copyright (c) 2000-2003 Barak Weichselbaum <barak@komodia.com> 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 00014 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 00015 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00016 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00017 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 00018 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00019 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00020 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00021 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00022 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00023 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00024 * SUCH DAMAGE. 00025 * 00026 * Contact info: 00027 * ------------- 00028 * 00029 * Site: http://www.komodia.com 00030 * Main contact: barak@komodia.com 00031 * For custom projects, 00032 * consulting, or other 00033 * paid services: sales@komodia.com 00034 */ 00035 00036 #include "stdafx.h" 00037 #include "Win32Mutex.h" 00038 00039 #ifdef _MEMORY_DEBUG 00040 #define new DEBUG_NEW 00041 #define malloc DEBUG_MALLOC 00042 static char THIS_FILE[] = __FILE__; 00043 #endif 00044 00045 KOMODIA_NAMESPACE_START 00046 00047 CWin32Mutex::CWin32Mutex(const char* pMutexName) : CGenericMutex(pMutexName), 00048 m_hMutex(NULL) 00049 { 00050 //Try to create the mutex 00051 m_hMutex=CreateMutex(NULL, 00052 FALSE, 00053 pMutexName); 00054 00055 //Check if we are the owners 00056 if (pMutexName && 00057 GetLastError()!=ERROR_ALREADY_EXISTS) 00058 SetFirst(); 00059 } 00060 00061 CWin32Mutex::~CWin32Mutex() 00062 { 00063 //Delete the mutex 00064 if (m_hMutex) 00065 CloseHandle(m_hMutex); 00066 } 00067 00068 BOOL CWin32Mutex::Aquire(unsigned long ulMSTimeout) 00069 { 00070 DWORD dwWaitResult; 00071 00072 //Wait for the mutex 00073 dwWaitResult=WaitForSingleObject(m_hMutex,ulMSTimeout); 00074 00075 //Check why did we quit 00076 return dwWaitResult==WAIT_TIMEOUT; 00077 } 00078 00079 BOOL CWin32Mutex::Release() 00080 { 00081 //Release the mutex 00082 return ReleaseMutex(m_hMutex)!=0; 00083 } 00084 00085 HANDLE CWin32Mutex::GetHandle()const 00086 { 00087 return m_hMutex; 00088 } 00089 00090 void CWin32Mutex::ReleaseObject() 00091 { 00092 Release(); 00093 } 00094 00095 KOMODIA_NAMESPACE_END |