kernel/eka/klib/kheap.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Wed, 18 Aug 2010 11:08:29 +0300
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Revision: 201033 Kit: 201033
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// Copyright (c) 1994-2009 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\klib\kheap.cpp
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// 
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//
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#include <kernel/kern_priv.h>
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_LIT(KLitKernHeap,"KernHeap");
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RHeapK::RHeapK(TInt aInitialSize)
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	: RHybridHeap(aInitialSize, 0, EFalse)			
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	{
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	}
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TInt RHeapK::Compress()
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	{
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	return 0;
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	}
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void RHeapK::Reset()
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	{
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	Fault(KErrNotSupported);
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	}
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TInt RHeapK::AllocSize(TInt& aTotalAllocSize) const
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	{
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	(void)aTotalAllocSize;
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	Fault(KErrNotSupported);
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	return 0;
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	}
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TInt RHeapK::Available(TInt& aBiggestBlock) const
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	{
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	(void)aBiggestBlock;
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	Fault(KErrNotSupported);
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	return 0;
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	}
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TInt RHeapK::CreateMutex()
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	{
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	DMutex*& m = *(DMutex**)&iLock;
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	return K::MutexCreate(m, KLitKernHeap, NULL, EFalse, KMutexOrdKernelHeap);
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	}
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RHeapK* RHeapK::FixedHeap(TAny* aBase, TInt aInitialSize)
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//
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// Create a kernel fixed heap.
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//
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	{
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	__ASSERT_ALWAYS(aInitialSize>(TInt)sizeof(RHeapK), K::Fault(K::ETHeapMaxLengthNegative));
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	return new(aBase) RHeapK(aInitialSize);
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	}
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void RHeapK::CheckThreadState()
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//
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// Check that the kernel is not locked and the thread is unkillable
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//
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	{
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	if (K::Initialising)
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		return;
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	__NK_ASSERT_UNLOCKED;
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	__ASSERT_NO_FAST_MUTEX;
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	__ASSERT_CRITICAL;
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	}
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void RHybridHeap::Lock() const   
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	{
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	DMutex* m = *(DMutex**)&iLock;
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	if (m)
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		Kern::MutexWait(*m);
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	}
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void RHybridHeap::Unlock() const   
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	{
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	DMutex* m = *(DMutex**)&iLock;
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	if (m)
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		Kern::MutexSignal(*m);
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	}
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void RHeapK::Fault(TInt aFault)
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	{
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	Kern::Fault("KERN-HEAP", aFault);
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	}
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#if defined(__HEAP_MACHINE_CODED__) && !defined(_DEBUG)
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GLDEF_C void RHeapK_PanicBadAllocatedCellSize()
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	{
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	K::Fault(K::EKHeapBadAllocatedCellSize);
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	}
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GLDEF_C void RHeapK_PanicBadNextCell()
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	{
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	K::Fault(K::EKHeapFreeBadNextCell);
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	}
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GLDEF_C void RHeapK_PanicBadPrevCell()
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	{
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	K::Fault(K::EKHeapFreeBadPrevCell);
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	}
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GLDEF_C void RHeapK_PanicBadCellAddress()
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	{
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	K::Fault(K::EKHeapBadCellAddress);
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	}
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#endif
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