hxmutex.cpp
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上传日期:2007-06-06
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文件大小:3k
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include "hxmutex.h"
- CHXMutex::CHXMutex()
- : m_lRefCount(0)
- , m_pMutex(NULL)
- {
- #if defined(THREADS_SUPPORTED) || defined(_UNIX_THREADS_SUPPORTED)
- HXMutex::MakeMutex(m_pMutex);
- #else
- HXMutex::MakeStubMutex(m_pMutex);
- #endif
- }
- CHXMutex::~CHXMutex()
- {
- HX_DELETE(m_pMutex);
- }
- STDMETHODIMP CHXMutex::Lock()
- {
- if (m_pMutex)
- return m_pMutex->Lock();
- else
- return HXR_FAIL;
- }
- STDMETHODIMP CHXMutex::TryLock()
- {
- if (m_pMutex)
- return m_pMutex->Trylock();
- else
- return HXR_FAIL;
- }
- STDMETHODIMP CHXMutex::Unlock()
- {
- if (m_pMutex)
- return m_pMutex->Unlock();
- else
- return HXR_FAIL;
- }
- STDMETHODIMP CHXMutex::QueryInterface(REFIID riid, void** ppvObj)
- {
- QInterfaceList qiList[] =
- {
- { GET_IIDHANDLE(IID_IHXMutex), (IHXMutex*)this },
- { GET_IIDHANDLE(IID_IUnknown), (IUnknown*)(IHXMutex*)this },
- };
-
- return ::QIFind(qiList, QILISTSIZE(qiList), riid, ppvObj);
- }
- ULONG32 CHXMutex::AddRef()
- {
- return InterlockedIncrement(&m_lRefCount);
- }
- ULONG32 CHXMutex::Release()
- {
- if (InterlockedDecrement(&m_lRefCount) > 0)
- {
- return m_lRefCount;
- }
- delete this;
- return 0;
- }