symbian_dll_map.cpp
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上传日期:2007-06-06
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- /* ***** 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 "platform/symbian/symbian_dll_map.h"
- #include "hxassert.h"
- class DLLMapInfo
- {
- public:
- DLLMapInfo(void* pEntryPoint);
- ~DLLMapInfo();
- void* EntryPoint() const { return m_pEntryPoint;}
- void OnLoad() {m_ulCount++;}
- BOOL OnUnload();
- private:
- void DoCleanup();
- void* m_pEntryPoint;
- UINT32 m_ulCount;
- };
- DLLMapInfo::DLLMapInfo(void* pEntryPoint) :
- m_pEntryPoint(pEntryPoint),
- m_ulCount(0)
- {}
- DLLMapInfo::~DLLMapInfo()
- {
- if (m_ulCount != 0)
- {
- DoCleanup();
- }
- }
- BOOL DLLMapInfo::OnUnload()
- {
- BOOL bRet = FALSE;
- HX_ASSERT(m_ulCount);
- if (m_ulCount > 0)
- {
- m_ulCount--;
- if (m_ulCount == 0)
- {
- DoCleanup();
- bRet = TRUE;
- }
- }
- return bRet;
- }
- void DLLMapInfo::DoCleanup()
- {
- #ifdef _ARM
- // Make the device behave like the emulator.
- // The emulator calls E32Dll(EDllProcessDetach) when
- // Close() is called on the library handle. This does
- // not occur on the device so we've added this code
- // to do it.
- TLibraryEntry pEntry = (TLibraryEntry)m_pEntryPoint;
-
- if (pEntry)
- {
- pEntry(EDllProcessDetach);
- }
- #endif
- }
- SymbianDLLMapImp::SymbianDLLMapImp()
- {}
- SymbianDLLMapImp::~SymbianDLLMapImp()
- {
- HX_ASSERT(m_libList.IsEmpty());
- while(!m_libList.IsEmpty())
- {
- DLLMapInfo* pTmp = (DLLMapInfo*)m_libList.RemoveHead();
- HX_DELETE(pTmp);
- }
- }
- void SymbianDLLMapImp::OnLoad(void* pDLLEntryPoint)
- {
- DLLMapInfo* pInfo = FindInfo(pDLLEntryPoint);
- if (!pInfo)
- {
- pInfo = new DLLMapInfo(pDLLEntryPoint);
- if (pInfo && !m_libList.AddHead(pInfo))
- {
- // The AddHead() failed
- HX_DELETE(pInfo);
- }
- }
- if (pInfo)
- {
- pInfo->OnLoad();
- }
- }
- void SymbianDLLMapImp::OnUnload(void* pDLLEntryPoint)
- {
- DLLMapInfo* pInfo = FindInfo(pDLLEntryPoint);
- HX_ASSERT(pInfo);
- if (pInfo)
- {
- if (pInfo->OnUnload())
- {
- // This was the last unload for this DLL.
- // Remove it from our list and destroy the info
-
- LISTPOSITION pos = m_libList.GetHeadPosition();
- while(pInfo && pos)
- {
- if (pInfo == (DLLMapInfo*)m_libList.GetAt(pos))
- {
- m_libList.RemoveAt(pos);
- HX_DELETE(pInfo);
- }
- else
- {
- m_libList.GetNext(pos);
- }
- }
- }
- }
- }
- DLLMapInfo* SymbianDLLMapImp::FindInfo(void* pDLLEntryPoint)
- {
- DLLMapInfo* pRet = NULL;
- CHXSimpleList::Iterator itr = m_libList.Begin();
- for(; !pRet && (itr != m_libList.End()); ++itr)
- {
- DLLMapInfo* pTmp = (DLLMapInfo*)*itr;
- if (pTmp && (pTmp->EntryPoint() == pDLLEntryPoint))
- {
- pRet = pTmp;
- }
- }
- return pRet;
- }