1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/genericopenlibs/openenvcore/libdl/src/loadeddlls.cpp Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,138 @@
1.4 +// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
1.5 +// All rights reserved.
1.6 +// This component and the accompanying materials are made available
1.7 +// under the terms of "Eclipse Public License v1.0"
1.8 +// which accompanies this distribution, and is available
1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
1.10 +//
1.11 +// Initial Contributors:
1.12 +// Nokia Corporation - initial contribution.
1.13 +//
1.14 +// Contributors:
1.15 +//
1.16 +// Description:
1.17 +// Name : loadeddlls.cpp
1.18 +// Part of : libdl library
1.19 +// Implements and maintains the list of opened dll.
1.20 +//
1.21 +//
1.22 +
1.23 +// INCLUDE FILES
1.24 +#include "loadeddlls.h"
1.25 +
1.26 +//-----------------------------------------------------------------------------
1.27 +//Function Name : CLoadedDlls::CLoadedDlls()
1.28 +//Description : Constructor
1.29 +//-----------------------------------------------------------------------------
1.30 +CLoadedDlls::CLoadedDlls()
1.31 + {
1.32 + const TInt error = CreateLock();
1.33 + //if error creating lock, panic.
1.34 + if ( KErrNone != error )
1.35 + {
1.36 + User::Panic(_L(""), error);
1.37 + }
1.38 + }
1.39 +
1.40 +//-----------------------------------------------------------------------------
1.41 +//Function Name : CLoadedDlls::~CLoadedDlls()
1.42 +//Description : Destructor
1.43 +//-----------------------------------------------------------------------------
1.44 +CLoadedDlls::~CLoadedDlls()
1.45 + {
1.46 + iLock.Close();
1.47 + iHandleList.Close();
1.48 + }
1.49 +
1.50 +//-----------------------------------------------------------------------------
1.51 +//Function Name : TInt CLoadedDlls::Add(const TDllEntry& aDllEntry)
1.52 +//Description : To add the dll to the list.
1.53 +//Return Value : KErrNone if added successfully else system wide error
1.54 +//-----------------------------------------------------------------------------
1.55 +TInt CLoadedDlls::Add(const TDllEntry& aDllEntry)
1.56 + {
1.57 + return iHandleList.Append(aDllEntry);
1.58 + }
1.59 +
1.60 +//-----------------------------------------------------------------------------
1.61 +//Function Name : void CLoadedDlls::Remove(const TInt aIndex)
1.62 +//Description : To remove the dll from the list.
1.63 +//-----------------------------------------------------------------------------
1.64 +void CLoadedDlls::Remove(const TInt aIndex)
1.65 + {
1.66 + iHandleList.Remove(aIndex);
1.67 + iHandleList.GranularCompress();
1.68 + }
1.69 +
1.70 +//-----------------------------------------------------------------------------
1.71 +//Function Name : TDllEntry& CLoadedDlls::At(const TInt aIndex)
1.72 +//Description : Get DllEntry& at particular index. This function assumes that
1.73 +// index is valid.
1.74 +//Return Value : TDllEntry& DllEntry corresponding to aIndex
1.75 +//-----------------------------------------------------------------------------
1.76 +TDllEntry& CLoadedDlls::At(const TInt aIndex)
1.77 + {
1.78 + return iHandleList[aIndex];
1.79 + }
1.80 +
1.81 +//-----------------------------------------------------------------------------
1.82 +//Function Name : TInt CLoadedDlls::Find(const void* aHandle) const
1.83 +//Description : Finds if dll with this handle exist or not
1.84 +//Return Value : Index in list if found else KErrNotFound
1.85 +//-----------------------------------------------------------------------------
1.86 +TInt CLoadedDlls::Find(const void* aHandle) const
1.87 + {
1.88 + TDllEntry tempDllEntry((TInt) aHandle);
1.89 + return iHandleList.Find(tempDllEntry, TIdentityRelation<TDllEntry>(TDllEntry::CompareByHandle));
1.90 + }
1.91 +
1.92 +//-----------------------------------------------------------------------------
1.93 +//Function Name : TInt CLoadedDlls::Find(const RLibrary& aLibrary) const
1.94 +//Description : Finds if dll with this library i.e. same path exist or not
1.95 +//Return Value : Index in list if found else KErrNotFound
1.96 +//-----------------------------------------------------------------------------
1.97 +TInt CLoadedDlls::Find(const RLibrary& aLibrary) const
1.98 + {
1.99 + TDllEntry tempDllEntry(aLibrary);
1.100 + return iHandleList.Find(tempDllEntry,TIdentityRelation<TDllEntry>(TDllEntry::CompareByPath));
1.101 + }
1.102 +
1.103 +//-----------------------------------------------------------------------------
1.104 +//Function Name : TBool TDllEntry::CompareByHandle(const TDllEntry& aEntry)
1.105 +//Description : Comparator function, compares iLibrary.Handle() of two
1.106 +// TDllEntry.
1.107 +//Return Value : ETrue if Handle of both TDllEntry's RLibrary's matches
1.108 +// else EFalse.
1.109 +//-----------------------------------------------------------------------------
1.110 +TBool TDllEntry::CompareByHandle(const TDllEntry& aEntry1, const TDllEntry& aEntry2)
1.111 + {
1.112 + if (aEntry1.iLibrary.Handle() == aEntry2.iLibrary.Handle())
1.113 + {
1.114 + return ETrue;
1.115 + }
1.116 + return EFalse;
1.117 + }
1.118 +
1.119 +//-----------------------------------------------------------------------------
1.120 +//Function Name : TBool TDllEntry::CompareByPath(const TDllEntry& aEntry)
1.121 +//Description : Comparator function, compares path corresponding to two
1.122 +// TDllEntry.
1.123 +//Return Value : ETrue if file name of both TDllEntry's RLibrary's matches
1.124 +// else EFalse.
1.125 +//-----------------------------------------------------------------------------
1.126 +TBool TDllEntry::CompareByPath(const TDllEntry& aEntry1, const TDllEntry& aEntry2)
1.127 + {
1.128 + if (aEntry1.iLibrary.FileName().Compare(aEntry2.iLibrary.FileName()))
1.129 + {
1.130 + return EFalse;
1.131 + }
1.132 + return ETrue;
1.133 + }
1.134 +
1.135 +//-----------------------------------------------------------------------------
1.136 +//Function Name : TDllEntry::TDllEntry(const RLibrary aLibrary, const TInt aFlag)
1.137 +//Description : constructor. to initialise library by RLibrary object
1.138 +//-----------------------------------------------------------------------------
1.139 +TDllEntry::TDllEntry(const RLibrary& aLibrary, const TInt aFlag) : iLibrary(aLibrary), iFlags(aFlag), iRefCount(1)
1.140 + {
1.141 + }