CriticalAutoRelease.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 "CriticalAutoRelease.h" 00038 00039 #include "ErrorHandlerMacros.h" 00040 #include "GenericCriticalSection.h" 00041 #include "CriticalSectionForProtection.h" 00042 00043 #ifdef _MEMORY_DEBUG 00044 #define new DEBUG_NEW 00045 #define malloc DEBUG_MALLOC 00046 static char THIS_FILE[] = __FILE__; 00047 #endif 00048 00049 KOMODIA_NAMESPACE_START 00050 00051 CCriticalAutoRelease::CCriticalAutoRelease(CGenericCriticalSection* pCS, 00052 BOOL bLock) : m_pCSection(pCS), 00053 m_ulEntryCount(0) 00054 { 00055 //Do we need to lock ourselves? 00056 if (bLock) 00057 Enter(); 00058 } 00059 00060 CCriticalAutoRelease::CCriticalAutoRelease(const CCriticalSectionForProtection* pCS, 00061 BOOL bLock) : m_pCSection(NULL), 00062 m_ulEntryCount(0) 00063 { 00064 //Do we have something to copy? 00065 if (pCS) 00066 m_pCSection=pCS->GetCriticalSection(); 00067 00068 //Continue 00069 if (bLock) 00070 Enter(); 00071 } 00072 00073 CCriticalAutoRelease::~CCriticalAutoRelease() 00074 { 00075 //Check if valid 00076 if (m_pCSection) 00077 //How many entries 00078 for (unsigned long ulCounter=0;ulCounter<m_ulEntryCount;++ulCounter) 00079 m_pCSection->Exit(); 00080 } 00081 00082 void CCriticalAutoRelease::Enter() 00083 { 00084 if (m_pCSection) 00085 { 00086 //Lock the CS 00087 m_pCSection->Enter(); 00088 00089 //Increate the count 00090 ++m_ulEntryCount; 00091 } 00092 } 00093 00094 void CCriticalAutoRelease::Exit() 00095 { 00096 if (m_pCSection && 00097 m_ulEntryCount) 00098 { 00099 //Decrease the count 00100 --m_ulEntryCount; 00101 00102 //And exit 00103 m_pCSection->Exit(); 00104 } 00105 } 00106 00107 KOMODIA_NAMESPACE_END |