kernel/eka/euser/epoc/up_dll_tls.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 18 Jan 2010 21:31:10 +0200
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// Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// e32\euser\epoc\up_dll_tls.cpp
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// This file contains DLL stub functions relating to TLS
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// 
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//
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#include "up_std.h"
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#include <e32svr.h>
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#include "u32std.h"
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/**
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Sets the value of the Thread Local Storage (TLS) variable.
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@param aPtr       The value to be assigned to the Thread Local Storage variable.
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                  In practice, this is almost always a pointer to memory
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                  that has previously been allocated, but does not necessarily
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                  need to be so.
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@return           KErrNone, if successful, otherwise one of the other
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                  system-wide error codes.
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*/
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TInt Dll::SetTls(TAny* aPtr)
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	{
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#ifdef __EPOC32__
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	return UserSvr::DllSetTls(MODULE_HANDLE, *(((TInt*)MODULE_HANDLE)+3), aPtr);
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#else
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	return UserSvr::DllSetTls(MODULE_HANDLE, KDllUid_Special, aPtr);
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#endif
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	}
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/**
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Gets the value of the Thread Local Storage (TLS) variable.
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@return           The value of the Thread Local Storage variable as set by
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                  a previous call to Dll::SetTls(). If no value has previously
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                  been set, then the returned value is NULL.
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*/
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TAny* Dll::Tls()
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	{
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#ifdef __EPOC32__
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	return UserSvr::DllTls(MODULE_HANDLE, *(((TInt*)MODULE_HANDLE)+3));
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#else
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	return UserSvr::DllTls(MODULE_HANDLE, KDllUid_Special);
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#endif
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	}
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/**
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Removes the Thread Local Storage (TLS) variable.
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A subsequent call to Dll::Tls() will return NULL.
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*/
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void Dll::FreeTls()
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	{
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	UserSvr::DllFreeTls(MODULE_HANDLE);
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	}