author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
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// Copyright (c) 2008-2009 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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// |
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#include <plat_priv.h> |
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#include <kernel/cache.h> |
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#include "mm.h" |
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#include "mmu.h" |
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#include "mmanager.h" |
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#include "mobject.h" |
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#include "mmapping.h" |
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#include "mpager.h" |
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#include "mswap.h" |
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/** |
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Log2 of minimum number of pages to attempt to write at a time. |
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The value of 2 gives a minimum write size of 16KB. |
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*/ |
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const TUint KMinPreferredWriteShift = 2; |
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/** |
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Log2 of maximum number of pages to attempt to write at a time. |
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The value of 4 gives a maximum write size of 64KB. |
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*/ |
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const TUint KMaxPreferredWriteShift = 4; |
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__ASSERT_COMPILE((1 << KMaxPreferredWriteShift) <= KMaxPagesToClean); |
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/** |
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Whether the CPU has the page colouring restriction, where pages must be mapped in sequential colour |
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order. |
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*/ |
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#ifdef __CPU_CACHE_HAS_COLOUR |
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const TBool KPageColouringRestriction = ETrue; |
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#else |
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const TBool KPageColouringRestriction = EFalse; |
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#endif |
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/** |
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Manages the swap via the data paging device. |
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class DSwapManager |
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{ |
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public: |
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/// The state of swap for a logical page in a memory object. |
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/// |
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/// Note that this does not always correspond to the state of the page in RAM - for example a |
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/// page can be dirty in RAM but blank in swap if it has never been written out. |
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enum TSwapState |
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{ |
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EStateUnreserved = 0, ///< swap space not yet reserved, or page is being decommitted |
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EStateBlank = 1, ///< swap page has never been written |
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EStateWritten = 2, ///< swap page has been written out at least once |
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EStateWriting = 3 ///< swap page is in the process of being written out |
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}; |
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enum |
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{ |
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ESwapIndexShift = 2, |
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ESwapStateMask = (1 << ESwapIndexShift) - 1, |
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ESwapIndexMask = 0xffffffff & ~ESwapStateMask |
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}; |
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TInt Create(DPagingDevice* aDevice); |
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TInt ReserveSwap(DMemoryObject* aMemory, TUint aStartIndex, TUint aPageCount); |
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TInt UnreserveSwap(DMemoryObject* aMemory, TUint aStartIndex, TUint aPageCount); |
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TBool IsReserved(DMemoryObject* aMemory, TUint aStartIndex, TUint aPageCount); |
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TInt ReadSwapPages(DMemoryObject* aMemory, TUint aIndex, TUint aCount, TLinAddr aLinAddr, TPhysAddr* aPhysAddrs); |
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TInt WriteSwapPages(DMemoryObject** aMemory, TUint* aIndex, TUint aCount, TLinAddr aLinAddr, TPhysAddr* aPhysAddrs, TBool aBackground); |
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void GetSwapInfo(SVMSwapInfo& aInfoOut); |
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TInt SetSwapThresholds(const SVMSwapThresholds& aThresholds); |
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void SetSwapAlign(TUint aSwapAlign); |
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private: |
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inline TSwapState SwapState(TUint aSwapData); |
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inline TInt SwapIndex(TUint aSwapData); |
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inline TUint SwapData(TSwapState aSwapState, TInt aSwapIndex); |
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TInt AllocSwapIndex(TUint aCount); |
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void FreeSwapIndex(TInt aSwapIndex); |
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void CheckSwapThresholdsAndUnlock(TUint aInitial); |
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void DoDeleteNotify(TUint aSwapIndex); |
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TInt DoWriteSwapPages(DMemoryObject** aMemory, TUint* aIndex, TUint aCount, TLinAddr aLinAddr, TInt aPageIndex, TPhysAddr* aPhysAddrs, TInt aSwapIndex, TBool aBackground); |
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private: |
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DPagingDevice* iDevice; ///< Paging device used to read and write swap pages |
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NFastMutex iSwapLock; ///< Fast mutex protecting access to all members below |
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TUint iFreePageCount; ///< Number of swap pages that have not been reserved |
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TBitMapAllocator* iBitMap; ///< Bitmap of swap pages that have been allocated |
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TUint iSwapAlign; ///< Log2 number of pages to align swap writes to |
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TUint iAllocOffset; ///< Next offset to try when allocating a swap page |
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TUint iSwapThesholdLow; |
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TUint iSwapThesholdGood; |
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}; |
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/** |
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Manager for demand paged memory objects which contain writeable data. |
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The contents of the memory are written to a backing store whenever its |
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pages are 'paged out'. |
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@see DSwapManager |
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class DDataPagedMemoryManager : public DPagedMemoryManager |
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{ |
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// from DMemoryManager... |
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virtual TInt Alloc(DMemoryObject* aMemory, TUint aIndex, TUint aCount); |
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virtual void Free(DMemoryObject* aMemory, TUint aIndex, TUint aCount); |
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virtual TInt Wipe(DMemoryObject* aMemory); |
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virtual void CleanPages(TUint aPageCount, SPageInfo** aPageInfos, TBool aBackground); |
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// Methods inherited from DPagedMemoryManager |
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virtual void Init3(); |
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virtual TInt InstallPagingDevice(DPagingDevice* aDevice); |
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virtual TInt AcquirePageReadRequest(DPageReadRequest*& aRequest, DMemoryObject* aMemory, TUint aIndex, TUint aCount); |
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virtual TInt AcquirePageWriteRequest(DPageWriteRequest*& aRequest, DMemoryObject** aMemory, TUint* aIndex, TUint aCount); |
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virtual TInt ReadPages(DMemoryObject* aMemory, TUint aIndex, TUint aCount, TPhysAddr* aPages, DPageReadRequest* aRequest); |
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virtual TBool IsAllocated(DMemoryObject* aMemory, TUint aIndex, TUint aCount); |
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void GetSwapInfo(SVMSwapInfo& aInfoOut); |
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TInt SetSwapThresholds(const SVMSwapThresholds& aThresholds); |
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TBool PhysicalAccessSupported(); |
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TBool UsePhysicalAccess(); |
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void SetUsePhysicalAccess(TBool aUsePhysicalAccess); |
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TUint PreferredWriteSize(); |
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TUint PreferredSwapAlignment(); |
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TInt SetWriteSize(TUint aWriteShift); |
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private: |
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TInt WritePages(DMemoryObject** aMemory, TUint* aIndex, TPhysAddr* aPages, TUint aCount, DPageWriteRequest *aRequest, TBool aAnyExecutable, TBool aBackground); |
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The paging device used for accessing the backing store. |
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This is set by #InstallPagingDevice. |
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*/ |
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DPagingDevice* iDevice; |
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The instance of #DSwapManager being used by this manager. |
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DSwapManager* iSwapManager; |
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/** |
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Whether to read and write pages by physical address without mapping them first. |
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Set if the paging media driver supports it. |
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*/ |
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TBool iUsePhysicalAccess; |
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public: |
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/** |
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The single instance of this manager class. |
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*/ |
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static DDataPagedMemoryManager TheManager; |
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}; |
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DDataPagedMemoryManager DDataPagedMemoryManager::TheManager; |
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DPagedMemoryManager* TheDataPagedMemoryManager = &DDataPagedMemoryManager::TheManager; |
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/** |
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Create a swap manager. |
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@param aDevice The demand paging device for access to the swap. |
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*/ |
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TInt DSwapManager::Create(DPagingDevice* aDevice) |
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{ |
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__ASSERT_COMPILE(!(ESwapIndexMask & ESwapStateMask)); |
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__NK_ASSERT_DEBUG(iDevice == NULL); |
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iDevice = aDevice; |
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// Create the structures required to track the swap usage. |
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TUint swapPages = (iDevice->iSwapSize << iDevice->iReadUnitShift) >> KPageShift; |
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// Can't have more swap pages than we can map. |
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__NK_ASSERT_DEBUG(swapPages<=DMemoryObject::KMaxPagingManagerData); |
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__NK_ASSERT_DEBUG(swapPages<=(KMaxTUint>>ESwapIndexShift)); |
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if ((TheMmu.TotalPhysicalRamPages() << 2) < swapPages) |
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{// The swap is limited to a maximum of 4 times the amount of RAM. |
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return KErrTooBig; |
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} |
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iBitMap = TBitMapAllocator::New(swapPages, ETrue); |
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if (iBitMap == NULL) |
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{// Not enough RAM to keep track of the swap. |
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return KErrNoMemory; |
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} |
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iFreePageCount = swapPages; |
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iAllocOffset = 0; |
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return KErrNone; |
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} |
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void DSwapManager::SetSwapAlign(TUint aSwapAlign) |
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{ |
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TRACE(("WDP: Set swap alignment to %d (%d KB)", aSwapAlign, 4 << aSwapAlign)); |
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NKern::FMWait(&iSwapLock); |
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iSwapAlign = aSwapAlign; |
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NKern::FMSignal(&iSwapLock); |
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} |
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inline DSwapManager::TSwapState DSwapManager::SwapState(TUint aSwapData) |
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{ |
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TSwapState state = (TSwapState)(aSwapData & ESwapStateMask); |
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__NK_ASSERT_DEBUG(state >= EStateWritten || (aSwapData & ~ESwapStateMask) == 0); |
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return state; |
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} |
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inline TInt DSwapManager::SwapIndex(TUint aSwapData) |
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{ |
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return aSwapData >> ESwapIndexShift; |
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} |
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inline TUint DSwapManager::SwapData(TSwapState aSwapState, TInt aSwapIndex) |
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{ |
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return (aSwapIndex << ESwapIndexShift) | aSwapState; |
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} |
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/** |
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Allocate one or more page's worth of space within the swap area. |
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The location is represented by a page-based index into the swap area. |
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@param aCount The number of page's worth of space to allocate. |
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|
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@return The swap index of the first location allocated. |
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*/ |
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TInt DSwapManager::AllocSwapIndex(TUint aCount) |
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{ |
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TRACE2(("DSwapManager::AllocSwapIndex %d", aCount)); |
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|
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__NK_ASSERT_DEBUG(aCount <= KMaxPagesToClean); |
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NKern::FMWait(&iSwapLock); |
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|
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TInt carry; |
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TInt l = KMaxTInt; |
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TInt swapIndex = -1; |
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|
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// if size suitable for alignment, search for aligned run of aCount from iAllocOffset to end, |
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// then from beginning |
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// |
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// note that this aligns writes that at least as large as the alignment size - an alternative |
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// policy might be to align writes that are an exact multiple of the alignment size |
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if (iSwapAlign && aCount >= (1u << iSwapAlign)) |
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{ |
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carry = 0; |
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swapIndex = iBitMap->AllocAligned(aCount, iSwapAlign, 0, EFalse, carry, l, iAllocOffset); |
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if (swapIndex < 0) |
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{ |
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carry = 0; |
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swapIndex = iBitMap->AllocAligned(aCount, iSwapAlign, 0, EFalse, carry, l, 0); |
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} |
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} |
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// if not doing aligned search, or aligned search failed, retry without alignment |
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if (swapIndex < 0) |
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{ |
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carry = 0; |
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swapIndex = iBitMap->AllocAligned(aCount, 0, 0, EFalse, carry, l, iAllocOffset); |
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if (swapIndex < 0) |
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{ |
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carry = 0; |
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swapIndex = iBitMap->AllocAligned(aCount, 0, 0, EFalse, carry, l, 0); |
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} |
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} |
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|
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// if we found one then mark it as allocated and update iAllocOffset |
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if (swapIndex >= 0) |
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{ |
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__NK_ASSERT_DEBUG(swapIndex <= (TInt)(iBitMap->iSize - aCount)); |
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iBitMap->Alloc(swapIndex, aCount); |
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iAllocOffset = (swapIndex + aCount) % iBitMap->iSize; |
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} |
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|
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NKern::FMSignal(&iSwapLock); |
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__NK_ASSERT_DEBUG(swapIndex >= 0 || aCount > 1); // can't fail to allocate single page |
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|
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TRACE2(("DSwapManager::AllocSwapIndex returns %d", swapIndex)); |
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return swapIndex; |
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} |
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|
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|
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/** |
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Free one page's worth of space within the swap area. |
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|
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The index must have been previously allocated with AllocSwapIndex(). |
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*/ |
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void DSwapManager::FreeSwapIndex(TInt aSwapIndex) |
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{ |
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__NK_ASSERT_DEBUG(aSwapIndex >= 0 && aSwapIndex < iBitMap->iSize); |
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DoDeleteNotify(aSwapIndex); |
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NKern::FMWait(&iSwapLock); |
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iBitMap->Free(aSwapIndex); |
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NKern::FMSignal(&iSwapLock); |
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} |
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328 |
|
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|
0 | 330 |
/** |
331 |
Reserve some swap pages for the requested region of the memory object |
|
332 |
||
333 |
@param aMemory The memory object to reserve pages for. |
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334 |
@param aStartIndex The page index in the memory object of the start of the region. |
|
335 |
@param aPageCount The number of pages to reserve. |
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336 |
||
337 |
@return KErrNone on success, KErrNoMemory if not enough swap space available. |
|
338 |
@pre aMemory's lock is held. |
|
339 |
@post aMemory's lock is held. |
|
340 |
*/ |
|
341 |
TInt DSwapManager::ReserveSwap(DMemoryObject* aMemory, TUint aStartIndex, TUint aPageCount) |
|
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{ |
|
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__NK_ASSERT_DEBUG(MemoryObjectLock::IsHeld(aMemory)); |
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344 |
||
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NKern::FMWait(&iSwapLock); |
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TUint initFree = iFreePageCount; |
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if (iFreePageCount < aPageCount) |
0 | 348 |
{ |
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NKern::FMSignal(&iSwapLock); |
0 | 350 |
Kern::AsyncNotifyChanges(EChangesOutOfMemory); |
351 |
return KErrNoMemory; |
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352 |
} |
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iFreePageCount -= aPageCount; |
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CheckSwapThresholdsAndUnlock(initFree); |
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355 |
|
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// Mark each page as allocated and uninitialised. |
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const TUint indexEnd = aStartIndex + aPageCount; |
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for (TUint index = aStartIndex; index < indexEnd; index++) |
0 | 359 |
{ |
360 |
// Grab MmuLock to stop manager data being accessed. |
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MmuLock::Lock(); |
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__NK_ASSERT_DEBUG(SwapState(aMemory->PagingManagerData(index)) == EStateUnreserved); |
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aMemory->SetPagingManagerData(index, EStateBlank); |
0 | 364 |
MmuLock::Unlock(); |
365 |
} |
|
366 |
||
367 |
return KErrNone; |
|
368 |
} |
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369 |
||
370 |
||
371 |
/** |
|
372 |
Unreserve swap pages for the requested region of the memory object. |
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373 |
||
374 |
@param aMemory The memory object to unreserve pages for. |
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375 |
@param aStartIndex The page index in the memory object of the start of the region. |
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376 |
@param aPageCount The number of pages to unreserve. |
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377 |
||
378 |
@return The number of pages freed. |
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379 |
@pre aMemory's lock is held. |
|
380 |
@post aMemory's lock is held. |
|
381 |
*/ |
|
382 |
TInt DSwapManager::UnreserveSwap(DMemoryObject* aMemory, TUint aStartIndex, TUint aPageCount) |
|
383 |
{ |
|
384 |
__NK_ASSERT_DEBUG(MemoryObjectLock::IsHeld(aMemory)); |
|
385 |
||
386 |
TUint freedPages = 0; |
|
387 |
const TUint indexEnd = aStartIndex + aPageCount; |
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388 |
for (TUint index = aStartIndex; index < indexEnd; index++) |
|
389 |
{ |
|
390 |
// Grab MmuLock to stop manager data being accessed. |
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391 |
MmuLock::Lock(); |
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392 |
TUint swapData = aMemory->PagingManagerData(index); |
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TSwapState state = SwapState(swapData); |
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if (state != EStateUnreserved) |
0 | 395 |
{ |
396 |
freedPages++; |
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aMemory->SetPagingManagerData(index, EStateUnreserved); |
0 | 398 |
} |
399 |
MmuLock::Unlock(); |
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if (state == EStateWritten) |
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FreeSwapIndex(SwapIndex(swapData)); |
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else if (state == EStateWriting) |
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404 |
{ |
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// Wait for cleaning to finish before deallocating swap space |
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PageCleaningLock::Lock(); |
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PageCleaningLock::Unlock(); |
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408 |
|
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|
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#ifdef _DEBUG |
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MmuLock::Lock(); |
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__NK_ASSERT_DEBUG(SwapState(aMemory->PagingManagerData(index)) == EStateUnreserved); |
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MmuLock::Unlock(); |
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#endif |
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} |
0 | 415 |
} |
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416 |
|
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NKern::FMWait(&iSwapLock); |
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TUint initFree = iFreePageCount; |
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419 |
iFreePageCount += freedPages; |
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420 |
CheckSwapThresholdsAndUnlock(initFree); |
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|
421 |
|
0 | 422 |
return freedPages; |
423 |
} |
|
424 |
||
425 |
||
426 |
/** |
|
427 |
Determine whether the specified pages in the memory object have swap reserved for them. |
|
428 |
||
429 |
@param aMemory The memory object that owns the pages. |
|
430 |
@param aStartIndex The first index of the pages to check. |
|
431 |
@param aPageCount The number of pages to check. |
|
432 |
||
433 |
@return ETrue if swap is reserved for all the pages, EFalse otherwise. |
|
434 |
*/ |
|
435 |
TBool DSwapManager::IsReserved(DMemoryObject* aMemory, TUint aStartIndex, TUint aPageCount) |
|
436 |
{// MmuLock required to protect manager data. |
|
437 |
__NK_ASSERT_DEBUG(MmuLock::IsHeld()); |
|
438 |
__NK_ASSERT_DEBUG(aStartIndex < aMemory->iSizeInPages); |
|
439 |
__NK_ASSERT_DEBUG(aStartIndex + aPageCount <= aMemory->iSizeInPages); |
|
440 |
||
441 |
const TUint indexEnd = aStartIndex + aPageCount; |
|
442 |
for (TUint index = aStartIndex; index < indexEnd; index++) |
|
443 |
{ |
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|
444 |
if (SwapState(aMemory->PagingManagerData(index)) == EStateUnreserved) |
0 | 445 |
{// This page is not allocated by swap manager. |
446 |
return EFalse; |
|
447 |
} |
|
448 |
} |
|
449 |
return ETrue; |
|
450 |
} |
|
451 |
||
452 |
||
453 |
/** |
|
454 |
Read from the swap the specified pages associated with the memory object. |
|
455 |
||
456 |
@param aMemory The memory object to read the pages for |
|
457 |
@param aIndex The index of the first page within the memory object. |
|
458 |
@param aCount The number of pages to read. |
|
459 |
@param aLinAddr The address to copy the pages to. |
|
460 |
@param aRequest The request to use for the read. |
|
461 |
@param aPhysAddrs An array of the physical addresses for each page to read in. |
|
462 |
*/ |
|
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|
463 |
TInt DSwapManager::ReadSwapPages(DMemoryObject* aMemory, TUint aIndex, TUint aCount, TLinAddr aLinAddr, TPhysAddr* aPhysAddrs) |
0 | 464 |
{ |
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465 |
__ASSERT_CRITICAL; |
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|
466 |
|
0 | 467 |
TInt r = KErrNone; |
468 |
const TUint readUnitShift = iDevice->iReadUnitShift; |
|
469 |
TUint readSize = KPageSize >> readUnitShift; |
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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diff
changeset
|
470 |
TThreadMessage message; |
0 | 471 |
|
472 |
const TUint indexEnd = aIndex + aCount; |
|
473 |
for (TUint index = aIndex; index < indexEnd; index++, aLinAddr += KPageSize, aPhysAddrs++) |
|
474 |
{ |
|
475 |
START_PAGING_BENCHMARK; |
|
476 |
||
477 |
MmuLock::Lock(); // MmuLock required for atomic access to manager data. |
|
478 |
TUint swapData = aMemory->PagingManagerData(index); |
|
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|
479 |
TSwapState state = SwapState(swapData); |
0 | 480 |
|
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|
481 |
if (state == EStateUnreserved) |
0 | 482 |
{// This page is not committed to the memory object |
483 |
MmuLock::Unlock(); |
|
484 |
return KErrNotFound; |
|
485 |
} |
|
90
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|
486 |
else if (state == EStateBlank) |
0 | 487 |
{// This page has not been written to yet so don't read from swap |
488 |
// just wipe it if required. |
|
90
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parents:
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diff
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|
489 |
TUint allocFlags = aMemory->RamAllocFlags(); |
0 | 490 |
MmuLock::Unlock(); |
90
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Revision: 201015
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parents:
0
diff
changeset
|
491 |
TBool wipePages = !(allocFlags & Mmu::EAllocNoWipe); |
0 | 492 |
if (wipePages) |
493 |
{ |
|
90
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Revision: 201015
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parents:
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diff
changeset
|
494 |
TUint8 wipeByte = (allocFlags & Mmu::EAllocUseCustomWipeByte) ? |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
495 |
(allocFlags >> Mmu::EAllocWipeByteShift) & 0xff : |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
496 |
0x03; |
0 | 497 |
memset((TAny*)aLinAddr, wipeByte, KPageSize); |
498 |
} |
|
499 |
} |
|
500 |
else |
|
501 |
{ |
|
90
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Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
502 |
// It is not possible to get here if the page is in state EStateWriting as if so it must |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
503 |
// be present in RAM, and so will not need to be read in. |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
504 |
__NK_ASSERT_DEBUG(state == EStateWritten); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
505 |
|
0 | 506 |
// OK to release as if the object's data is decommitted the pager |
507 |
// will check that data is still valid before mapping it. |
|
508 |
MmuLock::Unlock(); |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
509 |
TUint readStart = (SwapIndex(swapData) << KPageShift) >> readUnitShift; |
0 | 510 |
START_PAGING_BENCHMARK; |
90
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Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
511 |
r = iDevice->Read(&message, aLinAddr, readStart, readSize, DPagingDevice::EDriveDataPaging); |
0 | 512 |
if (r != KErrNone) |
513 |
__KTRACE_OPT(KPANIC, Kern::Printf("DSwapManager::ReadSwapPages: error reading media at %08x + %x: %d", readStart << readUnitShift, readSize << readUnitShift, r)); |
|
514 |
__NK_ASSERT_DEBUG(r!=KErrNoMemory); // not allowed to allocate memory, therefore can't fail with KErrNoMemory |
|
515 |
END_PAGING_BENCHMARK(EPagingBmReadDataMedia); |
|
516 |
__NK_ASSERT_ALWAYS(r == KErrNone); |
|
517 |
} |
|
518 |
END_PAGING_BENCHMARK(EPagingBmReadDataPage); |
|
519 |
} |
|
520 |
||
521 |
return r; |
|
522 |
} |
|
523 |
||
524 |
||
525 |
/** |
|
526 |
Write the specified memory object's pages from the RAM into the swap. |
|
527 |
||
528 |
@param aMemory The memory object who owns the pages. |
|
529 |
@param aIndex The index within the memory object. |
|
530 |
@param aCount The number of pages to write out. |
|
531 |
@param aLinAddr The location of the pages to write out. |
|
90
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Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
532 |
@param aBackground Whether this is being called in the background by the page cleaning thread |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
533 |
as opposed to on demand when a free page is required. |
0 | 534 |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
535 |
@pre Called with page cleaning lock held |
0 | 536 |
*/ |
201
43365a9b78a3
Revision: 201027
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109
diff
changeset
|
537 |
TInt DSwapManager::WriteSwapPages(DMemoryObject** aMemory, TUint* aIndex, TUint aCount, TLinAddr aLinAddr, TPhysAddr* aPhysAddrs, TBool aBackground) |
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
538 |
{ |
201
43365a9b78a3
Revision: 201027
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109
diff
changeset
|
539 |
TRACE(("DSwapManager::WriteSwapPages %d pages", aCount)); |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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109
diff
changeset
|
540 |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
541 |
__ASSERT_CRITICAL; // so we can pass the paging device a stack-allocated TThreadMessage |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
542 |
__NK_ASSERT_DEBUG(PageCleaningLock::IsHeld()); |
0 | 543 |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
544 |
START_PAGING_BENCHMARK; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
545 |
|
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
546 |
TUint i; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
547 |
TUint swapData[KMaxPagesToClean + 1]; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
548 |
|
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
549 |
MmuLock::Lock(); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
550 |
for (i = 0 ; i < aCount ; ++i) |
0 | 551 |
{ |
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
552 |
swapData[i] = aMemory[i]->PagingManagerData(aIndex[i]); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
553 |
TSwapState s = SwapState(swapData[i]); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
554 |
// It's not possible to write a page while it's already being written, because we always hold |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
555 |
// the PageCleaning mutex when we clean |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
556 |
__NK_ASSERT_DEBUG(s == EStateUnreserved || s == EStateBlank || s == EStateWritten); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
557 |
if (s == EStateBlank || s == EStateWritten) |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
558 |
aMemory[i]->SetPagingManagerData(aIndex[i], SwapData(EStateWriting, 0)); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
559 |
} |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
560 |
MmuLock::Unlock(); |
0 | 561 |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
562 |
// By the time we get here, some pages may have been decommitted, so write out only those runs |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
563 |
// of pages which are still committed. |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
564 |
|
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
565 |
TInt r = KErrNone; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
566 |
TInt startIndex = -1; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
567 |
swapData[aCount] = SwapData(EStateUnreserved, 0); // end of list marker |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
568 |
for (i = 0 ; i < (aCount + 1) ; ++i) |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
569 |
{ |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
570 |
if (SwapState(swapData[i]) != EStateUnreserved) |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
571 |
{ |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
572 |
if (startIndex == -1) |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
573 |
startIndex = i; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
574 |
|
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
575 |
// Free swap page corresponding to old version of the pages we are going to write |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
576 |
if (SwapState(swapData[i]) == EStateWritten) |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
577 |
FreeSwapIndex(SwapIndex(swapData[i])); |
0 | 578 |
} |
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
579 |
else |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
580 |
{ |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
581 |
if (startIndex != -1) |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
582 |
{ |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
583 |
// write pages from startIndex to i exclusive |
201
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
584 |
TUint count = i - startIndex; |
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
585 |
__NK_ASSERT_DEBUG(count > 0 && count <= KMaxPagesToClean); |
0 | 586 |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
587 |
// Get a new swap location for these pages, writing them all together if possible |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
588 |
TInt swapIndex = AllocSwapIndex(count); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
589 |
if (swapIndex >= 0) |
201
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
590 |
r = DoWriteSwapPages(&aMemory[startIndex], &aIndex[startIndex], count, aLinAddr, startIndex, aPhysAddrs, swapIndex, aBackground); |
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
591 |
else |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
592 |
{ |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
593 |
// Otherwise, write them individually |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
594 |
for (TUint j = startIndex ; j < i ; ++j) |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
595 |
{ |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
596 |
swapIndex = AllocSwapIndex(1); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
597 |
__NK_ASSERT_DEBUG(swapIndex >= 0); |
201
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
598 |
r = DoWriteSwapPages(&aMemory[j], &aIndex[j], 1, aLinAddr, j, &aPhysAddrs[j], swapIndex, aBackground); |
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
599 |
if (r != KErrNone) |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
600 |
break; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
601 |
} |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
602 |
} |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
603 |
|
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
604 |
startIndex = -1; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
605 |
} |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
606 |
} |
0 | 607 |
} |
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
608 |
|
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
609 |
END_PAGING_BENCHMARK_N(EPagingBmWriteDataPage, aCount); |
0 | 610 |
|
611 |
return r; |
|
612 |
} |
|
613 |
||
201
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
614 |
TInt DSwapManager::DoWriteSwapPages(DMemoryObject** aMemory, TUint* aIndex, TUint aCount, TLinAddr aLinAddr, TInt aPageIndex, TPhysAddr* aPhysAddrs, TInt aSwapIndex, TBool aBackground) |
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
615 |
{ |
201
43365a9b78a3
Revision: 201027
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parents:
109
diff
changeset
|
616 |
TRACE2(("DSwapManager::DoWriteSwapPages %d pages to %d", aCount, aSwapIndex)); |
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
617 |
|
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
618 |
const TUint readUnitShift = iDevice->iReadUnitShift; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
619 |
const TUint writeSize = aCount << (KPageShift - readUnitShift); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
620 |
const TUint writeOffset = aSwapIndex << (KPageShift - readUnitShift); |
201
43365a9b78a3
Revision: 201027
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parents:
109
diff
changeset
|
621 |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
622 |
TThreadMessage msg; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
623 |
START_PAGING_BENCHMARK; |
201
43365a9b78a3
Revision: 201027
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109
diff
changeset
|
624 |
TInt r; |
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Revision: 201027
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109
diff
changeset
|
625 |
if (aLinAddr == 0) |
43365a9b78a3
Revision: 201027
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parents:
109
diff
changeset
|
626 |
r = iDevice->WritePhysical(&msg, aPhysAddrs, aCount, writeOffset, aBackground); |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
627 |
else |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
628 |
r = iDevice->Write(&msg, aLinAddr + (aPageIndex << KPageShift), writeOffset, writeSize, aBackground); |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
629 |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
630 |
if (r != KErrNone) |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
631 |
{ |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
632 |
__KTRACE_OPT(KPANIC, Kern::Printf("DSwapManager::WriteSwapPages: error writing media from %08x to %08x + %x: %d", aLinAddr, writeOffset << readUnitShift, writeSize << readUnitShift, r)); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
633 |
} |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
634 |
__NK_ASSERT_DEBUG(r!=KErrNoMemory); // not allowed to allocate memory, therefore can't fail with KErrNoMemory |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
635 |
__NK_ASSERT_ALWAYS(r == KErrNone); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
636 |
END_PAGING_BENCHMARK(EPagingBmWriteDataMedia); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
637 |
|
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
638 |
TUint i; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
639 |
TUint swapData[KMaxPagesToClean]; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
640 |
|
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
641 |
MmuLock::Lock(); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
642 |
for (i = 0 ; i < aCount ; ++i) |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
643 |
{ |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
644 |
// Re-check the swap state in case page was decommitted while we were writing |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
645 |
swapData[i] = aMemory[i]->PagingManagerData(aIndex[i]); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
646 |
TSwapState s = SwapState(swapData[i]); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
647 |
__NK_ASSERT_DEBUG(s == EStateUnreserved || s == EStateWriting); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
648 |
if (s == EStateWriting) |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
649 |
{ |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
650 |
// Store the new swap location and mark the page as saved. |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
651 |
aMemory[i]->SetPagingManagerData(aIndex[i], SwapData(EStateWritten, aSwapIndex + i)); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
652 |
} |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
653 |
} |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
654 |
MmuLock::Unlock(); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
655 |
|
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
656 |
for (i = 0 ; i < aCount ; ++i) |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
657 |
{ |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
658 |
TSwapState s = SwapState(swapData[i]); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
659 |
if (s == EStateUnreserved) |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
660 |
{ |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
661 |
// The page was decommitted while we were cleaning it, so free the swap page we |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
662 |
// allocated and continue, leaving this page in the unreserved state. |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
663 |
FreeSwapIndex(aSwapIndex + i); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
664 |
} |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
665 |
} |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
666 |
|
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
667 |
return KErrNone; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
668 |
} |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
669 |
|
0 | 670 |
|
671 |
/** |
|
672 |
Notify the media driver that the page written to swap is no longer required. |
|
673 |
*/ |
|
674 |
void DSwapManager::DoDeleteNotify(TUint aSwapIndex) |
|
675 |
{ |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
676 |
__ASSERT_CRITICAL; // so we can pass the paging device a stack-allocated TThreadMessage |
0 | 677 |
#ifdef __PAGING_DELETE_NOTIFY_ENABLED |
678 |
const TUint readUnitShift = iDevice->iReadUnitShift; |
|
679 |
const TUint size = KPageSize >> readUnitShift; |
|
680 |
TUint offset = (aSwapIndex << KPageShift) >> readUnitShift; |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
681 |
TThreadMessage msg; |
0 | 682 |
|
683 |
START_PAGING_BENCHMARK; |
|
684 |
// Ignore the return value as this is just an optimisation that is not supported on all media. |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
685 |
(void)iDevice->DeleteNotify(&msg, offset, size); |
0 | 686 |
END_PAGING_BENCHMARK(EPagingBmDeleteNotifyDataPage); |
687 |
#endif |
|
688 |
} |
|
689 |
||
690 |
||
691 |
// Check swap thresholds and notify (see K::CheckFreeMemoryLevel) |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
692 |
void DSwapManager::CheckSwapThresholdsAndUnlock(TUint aInitial) |
0 | 693 |
{ |
694 |
TUint changes = 0; |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
695 |
if (iFreePageCount < iSwapThesholdLow && aInitial >= iSwapThesholdLow) |
0 | 696 |
changes |= (EChangesFreeMemory | EChangesLowMemory); |
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
697 |
if (iFreePageCount >= iSwapThesholdGood && aInitial < iSwapThesholdGood) |
0 | 698 |
changes |= EChangesFreeMemory; |
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
699 |
NKern::FMSignal(&iSwapLock); |
0 | 700 |
if (changes) |
701 |
Kern::AsyncNotifyChanges(changes); |
|
702 |
} |
|
703 |
||
704 |
||
705 |
void DSwapManager::GetSwapInfo(SVMSwapInfo& aInfoOut) |
|
706 |
{ |
|
707 |
aInfoOut.iSwapSize = iBitMap->iSize << KPageShift; |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
708 |
NKern::FMWait(&iSwapLock); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
709 |
aInfoOut.iSwapFree = iFreePageCount << KPageShift; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
710 |
NKern::FMSignal(&iSwapLock); |
0 | 711 |
} |
712 |
||
713 |
||
714 |
TInt DSwapManager::SetSwapThresholds(const SVMSwapThresholds& aThresholds) |
|
715 |
{ |
|
716 |
if (aThresholds.iLowThreshold > aThresholds.iGoodThreshold) |
|
717 |
return KErrArgument; |
|
718 |
TInt low = (aThresholds.iLowThreshold + KPageSize - 1) >> KPageShift; |
|
719 |
TInt good = (aThresholds.iGoodThreshold + KPageSize - 1) >> KPageShift; |
|
720 |
if (good > iBitMap->iSize) |
|
721 |
return KErrArgument; |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
722 |
NKern::FMWait(&iSwapLock); |
0 | 723 |
iSwapThesholdLow = low; |
724 |
iSwapThesholdGood = good; |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
725 |
NKern::FMSignal(&iSwapLock); |
0 | 726 |
return KErrNone; |
727 |
} |
|
728 |
||
729 |
||
201
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
730 |
TBool DDataPagedMemoryManager::PhysicalAccessSupported() |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
731 |
{ |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
732 |
return (iDevice->iFlags & DPagingDevice::ESupportsPhysicalAccess) != 0; |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
733 |
} |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
734 |
|
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
735 |
|
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
736 |
TBool DDataPagedMemoryManager::UsePhysicalAccess() |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
737 |
{ |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
738 |
return iUsePhysicalAccess; |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
739 |
} |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
740 |
|
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
741 |
|
43365a9b78a3
Revision: 201027
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|
742 |
void DDataPagedMemoryManager::SetUsePhysicalAccess(TBool aUsePhysicalAccess) |
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|
743 |
{ |
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|
744 |
TRACE(("WDP: Use physical access set to %d", aUsePhysicalAccess)); |
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|
745 |
NKern::ThreadEnterCS(); |
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|
746 |
PageCleaningLock::Lock(); |
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|
747 |
iUsePhysicalAccess = aUsePhysicalAccess; |
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changeset
|
748 |
ThePager.SetCleanInSequence(!iUsePhysicalAccess && KPageColouringRestriction); |
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|
749 |
PageCleaningLock::Unlock(); |
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|
750 |
NKern::ThreadLeaveCS(); |
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changeset
|
751 |
} |
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diff
changeset
|
752 |
|
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Revision: 201027
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diff
changeset
|
753 |
|
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Revision: 201027
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|
754 |
TUint DDataPagedMemoryManager::PreferredWriteSize() |
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Revision: 201027
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diff
changeset
|
755 |
{ |
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|
756 |
return MaxU(iDevice->iPreferredWriteShift, KMinPreferredWriteShift + KPageShift) - KPageShift; |
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diff
changeset
|
757 |
} |
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Revision: 201027
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diff
changeset
|
758 |
|
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Revision: 201027
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diff
changeset
|
759 |
|
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Revision: 201027
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|
760 |
TUint DDataPagedMemoryManager::PreferredSwapAlignment() |
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Revision: 201027
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diff
changeset
|
761 |
{ |
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|
762 |
return MaxU(iDevice->iPreferredWriteShift, KPageShift) - KPageShift; |
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changeset
|
763 |
} |
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Revision: 201027
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changeset
|
764 |
|
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Revision: 201027
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diff
changeset
|
765 |
|
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Revision: 201027
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|
766 |
TInt DDataPagedMemoryManager::SetWriteSize(TUint aWriteShift) |
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Revision: 201027
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|
767 |
{ |
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|
768 |
TRACE(("WDP: Set write size to %d (%d KB)", aWriteShift, 4 << aWriteShift)); |
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|
769 |
// Check value is sensible |
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|
770 |
if (aWriteShift > 31) |
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|
771 |
return KErrArgument; |
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Revision: 201027
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changeset
|
772 |
if (aWriteShift > KMaxPreferredWriteShift) |
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Revision: 201027
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changeset
|
773 |
{ |
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Revision: 201027
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|
774 |
aWriteShift = KMaxPreferredWriteShift; |
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Revision: 201027
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|
775 |
TRACE(("WDP: Reduced write size to %d (%d KB)", |
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Revision: 201027
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changeset
|
776 |
aWriteShift, 4 << aWriteShift)); |
43365a9b78a3
Revision: 201027
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diff
changeset
|
777 |
|
43365a9b78a3
Revision: 201027
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diff
changeset
|
778 |
} |
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Revision: 201027
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changeset
|
779 |
NKern::ThreadEnterCS(); |
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Revision: 201027
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|
780 |
PageCleaningLock::Lock(); |
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Revision: 201027
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|
781 |
ThePager.SetPagesToClean(1 << aWriteShift); |
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Revision: 201027
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changeset
|
782 |
PageCleaningLock::Unlock(); |
43365a9b78a3
Revision: 201027
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changeset
|
783 |
NKern::ThreadLeaveCS(); |
43365a9b78a3
Revision: 201027
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diff
changeset
|
784 |
return KErrNone; |
43365a9b78a3
Revision: 201027
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parents:
109
diff
changeset
|
785 |
} |
43365a9b78a3
Revision: 201027
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diff
changeset
|
786 |
|
0 | 787 |
|
788 |
TInt DDataPagedMemoryManager::InstallPagingDevice(DPagingDevice* aDevice) |
|
789 |
{ |
|
790 |
TRACEB(("DDataPagedMemoryManager::InstallPagingDevice(0x%08x)",aDevice)); |
|
791 |
||
792 |
TUint dataPolicy = TheSuperPage().KernelConfigFlags() & EKernelConfigDataPagingPolicyMask; |
|
793 |
TRACEB(("Data Paging Policy = %d", dataPolicy >> EKernelConfigDataPagingPolicyShift)); |
|
794 |
if (dataPolicy == EKernelConfigDataPagingPolicyNoPaging) |
|
795 |
{// No paging allowed so don't register the device. |
|
796 |
return KErrNone; |
|
797 |
} |
|
798 |
||
799 |
// Store the device, blocking any other devices from installing. |
|
109
b3a1d9898418
Revision: 201019
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parents:
90
diff
changeset
|
800 |
// unless the device is a media extension device |
b3a1d9898418
Revision: 201019
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
90
diff
changeset
|
801 |
if(aDevice->iType & DPagingDevice::EMediaExtension) |
b3a1d9898418
Revision: 201019
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
90
diff
changeset
|
802 |
{ |
b3a1d9898418
Revision: 201019
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
90
diff
changeset
|
803 |
delete iSwapManager; |
b3a1d9898418
Revision: 201019
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
90
diff
changeset
|
804 |
iSwapManager = NULL; |
b3a1d9898418
Revision: 201019
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
90
diff
changeset
|
805 |
TAny* null = 0; |
b3a1d9898418
Revision: 201019
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
90
diff
changeset
|
806 |
__e32_atomic_store_ord_ptr(&iDevice, null); |
b3a1d9898418
Revision: 201019
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
90
diff
changeset
|
807 |
} |
b3a1d9898418
Revision: 201019
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
90
diff
changeset
|
808 |
|
0 | 809 |
if (!NKern::CompareAndSwap((TAny*&)iDevice, (TAny*)NULL, (TAny*)aDevice)) |
810 |
{// Data paging device already installed. |
|
811 |
__KTRACE_OPT2(KPAGING,KBOOT,Kern::Printf("**** Attempt to install more than one data paging device !!!!!!!! ****")); |
|
812 |
return KErrAlreadyExists; |
|
813 |
} |
|
814 |
||
815 |
// Now we can determine the size of the swap, create the swap manager. |
|
816 |
iSwapManager = new DSwapManager; |
|
201
43365a9b78a3
Revision: 201027
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109
diff
changeset
|
817 |
if (!iSwapManager) |
43365a9b78a3
Revision: 201027
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109
diff
changeset
|
818 |
return KErrNoMemory; |
0 | 819 |
|
201
43365a9b78a3
Revision: 201027
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109
diff
changeset
|
820 |
// Create swap manager object |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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109
diff
changeset
|
821 |
TInt r = iSwapManager->Create(aDevice); |
0 | 822 |
if (r != KErrNone) |
823 |
{// Couldn't create the swap manager. |
|
824 |
delete iSwapManager; |
|
825 |
iSwapManager = NULL; |
|
826 |
NKern::SafeSwap(NULL, (TAny*&)iDevice); |
|
827 |
return r; |
|
828 |
} |
|
201
43365a9b78a3
Revision: 201027
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109
diff
changeset
|
829 |
|
43365a9b78a3
Revision: 201027
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109
diff
changeset
|
830 |
// Enable physical access where supported |
43365a9b78a3
Revision: 201027
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109
diff
changeset
|
831 |
SetUsePhysicalAccess(PhysicalAccessSupported()); |
43365a9b78a3
Revision: 201027
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parents:
109
diff
changeset
|
832 |
|
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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109
diff
changeset
|
833 |
// Determine swap alignment and number of pages to clean at once from device's preferred write |
43365a9b78a3
Revision: 201027
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diff
changeset
|
834 |
// size, if set |
43365a9b78a3
Revision: 201027
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109
diff
changeset
|
835 |
TRACE(("WDP: Preferred write shift is %d", iDevice->iPreferredWriteShift)); |
43365a9b78a3
Revision: 201027
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109
diff
changeset
|
836 |
r = SetWriteSize(PreferredWriteSize()); |
43365a9b78a3
Revision: 201027
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diff
changeset
|
837 |
if (r != KErrNone) |
43365a9b78a3
Revision: 201027
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parents:
109
diff
changeset
|
838 |
{ |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
839 |
delete iSwapManager; |
43365a9b78a3
Revision: 201027
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parents:
109
diff
changeset
|
840 |
iSwapManager = NULL; |
43365a9b78a3
Revision: 201027
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109
diff
changeset
|
841 |
NKern::SafeSwap(NULL, (TAny*&)iDevice); |
43365a9b78a3
Revision: 201027
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109
diff
changeset
|
842 |
return r; |
43365a9b78a3
Revision: 201027
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parents:
109
diff
changeset
|
843 |
} |
43365a9b78a3
Revision: 201027
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parents:
109
diff
changeset
|
844 |
|
43365a9b78a3
Revision: 201027
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parents:
109
diff
changeset
|
845 |
// Set swap alignment |
43365a9b78a3
Revision: 201027
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109
diff
changeset
|
846 |
iSwapManager->SetSwapAlign(PreferredSwapAlignment()); |
43365a9b78a3
Revision: 201027
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parents:
109
diff
changeset
|
847 |
|
0 | 848 |
NKern::LockedSetClear(K::MemModelAttributes, 0, EMemModelAttrDataPaging); |
849 |
||
850 |
return r; |
|
851 |
} |
|
852 |
||
853 |
||
854 |
TInt DDataPagedMemoryManager::AcquirePageReadRequest(DPageReadRequest*& aRequest, DMemoryObject* aMemory, TUint aIndex, TUint aCount) |
|
855 |
{ |
|
856 |
aRequest = iDevice->iRequestPool->AcquirePageReadRequest(aMemory,aIndex,aCount); |
|
857 |
return KErrNone; |
|
858 |
} |
|
859 |
||
860 |
||
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
861 |
TInt DDataPagedMemoryManager::AcquirePageWriteRequest(DPageWriteRequest*& aRequest, DMemoryObject** aMemory, TUint* aIndex, TUint aCount) |
0 | 862 |
{ |
863 |
aRequest = iDevice->iRequestPool->AcquirePageWriteRequest(aMemory,aIndex,aCount); |
|
864 |
return KErrNone; |
|
865 |
} |
|
866 |
||
867 |
||
868 |
void DDataPagedMemoryManager::Init3() |
|
869 |
{ |
|
870 |
} |
|
871 |
||
872 |
||
873 |
TInt DDataPagedMemoryManager::Alloc(DMemoryObject* aMemory, TUint aIndex, TUint aCount) |
|
874 |
{ |
|
875 |
__NK_ASSERT_DEBUG(MemoryObjectLock::IsHeld(aMemory)); |
|
876 |
||
877 |
// re-initialise any decommitted pages which we may still own because they were pinned... |
|
878 |
ReAllocDecommitted(aMemory,aIndex,aCount); |
|
879 |
||
880 |
// Reserve the swap pages required. |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
881 |
return iSwapManager->ReserveSwap(aMemory, aIndex, aCount); |
0 | 882 |
} |
883 |
||
884 |
||
885 |
void DDataPagedMemoryManager::Free(DMemoryObject* aMemory, TUint aIndex, TUint aCount) |
|
886 |
{ |
|
887 |
TRACE2(("DDataPagedMemoryManager::Free(0x%08x,0x%x,0x%x)", aMemory, aIndex, aCount)); |
|
888 |
__NK_ASSERT_DEBUG(MemoryObjectLock::IsHeld(aMemory)); |
|
889 |
||
890 |
// Unreserve the swap pages associated with the memory object. Do this before |
|
891 |
// removing the page array entries to prevent a page fault reallocating these pages. |
|
892 |
TInt freed = iSwapManager->UnreserveSwap(aMemory, aIndex, aCount); |
|
893 |
(void)freed; |
|
894 |
||
895 |
DoFree(aMemory,aIndex,aCount); |
|
896 |
} |
|
897 |
||
898 |
||
899 |
/** |
|
900 |
@copydoc DMemoryManager::Wipe |
|
901 |
*/ |
|
902 |
TInt DDataPagedMemoryManager::Wipe(DMemoryObject* aMemory) |
|
903 |
{ |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
904 |
// This is not implemented |
947f0dc9f7a8
Revision: 201015
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parents:
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diff
changeset
|
905 |
// |
947f0dc9f7a8
Revision: 201015
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parents:
0
diff
changeset
|
906 |
// It's possible to implement this by throwing away all pages that are paged in and just setting |
947f0dc9f7a8
Revision: 201015
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parents:
0
diff
changeset
|
907 |
// the backing store state to EStateBlank, however there are currently no use cases which |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
908 |
// involve calling Wipe on paged memory. |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
909 |
|
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Revision: 201015
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parents:
0
diff
changeset
|
910 |
__NK_ASSERT_ALWAYS(0); |
0 | 911 |
|
912 |
return KErrNotSupported; |
|
913 |
} |
|
914 |
||
915 |
||
916 |
TInt DDataPagedMemoryManager::ReadPages(DMemoryObject* aMemory, TUint aIndex, TUint aCount, TPhysAddr* aPages, DPageReadRequest* aRequest) |
|
917 |
{ |
|
90
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|
918 |
__NK_ASSERT_DEBUG(aRequest->CheckUseContiguous(aMemory,aIndex,aCount)); |
0 | 919 |
|
201
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|
920 |
// todo: Possible to read using physical addresses here, but not sure it's worth it because it's |
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|
921 |
// not much saving and we may need to map the page anyway if it's blank to clear it |
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|
922 |
// |
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|
923 |
// todo: Could move clearing pages up to here maybe? |
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|
924 |
|
0 | 925 |
// Map pages temporarily so that we can copy into them. |
926 |
const TLinAddr linAddr = aRequest->MapPages(aIndex, aCount, aPages); |
|
927 |
||
201
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|
928 |
TInt r = iSwapManager->ReadSwapPages(aMemory, aIndex, aCount, linAddr, aPages); |
0 | 929 |
|
930 |
// The memory object allows executable mappings then need IMB. |
|
931 |
aRequest->UnmapPages(aMemory->IsExecutable()); |
|
932 |
||
933 |
return r; |
|
934 |
} |
|
935 |
||
936 |
||
90
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Revision: 201015
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parents:
0
diff
changeset
|
937 |
TInt DDataPagedMemoryManager::WritePages(DMemoryObject** aMemory, TUint* aIndex, TPhysAddr* aPages, TUint aCount, DPageWriteRequest* aRequest, TBool aAnyExecutable, TBool aBackground) |
0 | 938 |
{ |
201
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|
939 |
// Note: this method used to do an IMB for executable pages (like ReadPages) but it was thought |
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|
940 |
// that this was uncessessary and so was removed |
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changeset
|
941 |
|
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Revision: 201027
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|
942 |
TLinAddr linAddr = 0; |
0 | 943 |
|
201
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|
944 |
if (iUsePhysicalAccess) |
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Revision: 201027
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changeset
|
945 |
{ |
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Revision: 201027
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|
946 |
// must maps pages to perform cache maintenance but can map each page individually |
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|
947 |
for (TUint i = 0 ; i < aCount ; ++i) |
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changeset
|
948 |
{ |
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Revision: 201027
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|
949 |
TLinAddr addr = aRequest->MapPages(aIndex[i], 1, &aPages[i]); |
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Revision: 201027
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|
950 |
Cache::SyncMemoryBeforeDmaWrite(addr, KPageSize); |
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|
951 |
aRequest->UnmapPages(EFalse); |
43365a9b78a3
Revision: 201027
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|
952 |
} |
43365a9b78a3
Revision: 201027
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changeset
|
953 |
} |
43365a9b78a3
Revision: 201027
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changeset
|
954 |
else |
43365a9b78a3
Revision: 201027
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|
955 |
linAddr = aRequest->MapPages(aIndex[0], aCount, aPages); |
43365a9b78a3
Revision: 201027
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changeset
|
956 |
|
43365a9b78a3
Revision: 201027
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changeset
|
957 |
TInt r = iSwapManager->WriteSwapPages(aMemory, aIndex, aCount, linAddr, aPages, aBackground); |
0 | 958 |
|
201
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Revision: 201027
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|
959 |
if (linAddr != 0) |
43365a9b78a3
Revision: 201027
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changeset
|
960 |
aRequest->UnmapPages(EFalse); |
0 | 961 |
|
962 |
return r; |
|
963 |
} |
|
964 |
||
965 |
||
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
966 |
void DDataPagedMemoryManager::CleanPages(TUint aPageCount, SPageInfo** aPageInfos, TBool aBackground) |
0 | 967 |
{ |
201
43365a9b78a3
Revision: 201027
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|
968 |
TRACE(("DDataPagedMemoryManager::CleanPages %d", aPageCount)); |
43365a9b78a3
Revision: 201027
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|
969 |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
970 |
__NK_ASSERT_DEBUG(PageCleaningLock::IsHeld()); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
971 |
__NK_ASSERT_DEBUG(MmuLock::IsHeld()); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
972 |
__NK_ASSERT_DEBUG(aPageCount <= (TUint)KMaxPagesToClean); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
973 |
|
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
974 |
TUint i; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
975 |
DMemoryObject* memory[KMaxPagesToClean]; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
976 |
TUint index[KMaxPagesToClean]; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
977 |
TPhysAddr physAddr[KMaxPagesToClean]; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
978 |
TBool anyExecutable = EFalse; |
201
43365a9b78a3
Revision: 201027
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parents:
109
diff
changeset
|
979 |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
980 |
for (i = 0 ; i < aPageCount ; ++i) |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
981 |
{ |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
982 |
SPageInfo* pi = aPageInfos[i]; |
0 | 983 |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
984 |
__NK_ASSERT_DEBUG(!pi->IsWritable()); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
985 |
__NK_ASSERT_DEBUG(pi->IsDirty()); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
986 |
|
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
987 |
// mark page as being modified by us... |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
988 |
pi->SetModifier(&memory[0]); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
989 |
|
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
990 |
// get info about page... |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
991 |
memory[i] = pi->Owner(); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
992 |
index[i] = pi->Index(); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
993 |
physAddr[i] = pi->PhysAddr(); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
994 |
anyExecutable = anyExecutable || memory[i]->IsExecutable(); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
995 |
} |
0 | 996 |
|
997 |
MmuLock::Unlock(); |
|
998 |
||
999 |
// get paging request object... |
|
1000 |
DPageWriteRequest* req; |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
1001 |
TInt r = AcquirePageWriteRequest(req, memory, index, aPageCount); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
1002 |
__NK_ASSERT_DEBUG(r==KErrNone && req); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
1003 |
|
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
1004 |
r = WritePages(memory, index, physAddr, aPageCount, req, anyExecutable, aBackground); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
1005 |
__NK_ASSERT_DEBUG(r == KErrNone); // this should never return an error |
0 | 1006 |
|
1007 |
req->Release(); |
|
1008 |
||
1009 |
MmuLock::Lock(); |
|
1010 |
||
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
1011 |
for (i = 0 ; i < aPageCount ; ++i) |
0 | 1012 |
{ |
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
1013 |
SPageInfo* pi = aPageInfos[i]; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
1014 |
// check if page is clean... |
201
43365a9b78a3
Revision: 201027
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109
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|
1015 |
if(pi->CheckModified(&memory[0]) || |
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Revision: 201027
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|
1016 |
pi->IsWritable()) |
90
947f0dc9f7a8
Revision: 201015
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parents:
0
diff
changeset
|
1017 |
{ |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
1018 |
// someone else modified the page, or it became writable, so mark as not cleaned |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
1019 |
aPageInfos[i] = NULL; |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
1020 |
} |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
1021 |
else |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
1022 |
{ |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
1023 |
// page is now clean! |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
1024 |
ThePager.SetClean(*pi); |
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
1025 |
} |
0 | 1026 |
} |
1027 |
} |
|
1028 |
||
1029 |
||
1030 |
TBool DDataPagedMemoryManager::IsAllocated(DMemoryObject* aMemory, TUint aIndex, TUint aCount) |
|
1031 |
{// MmuLock required to protect manager data. |
|
1032 |
// DPagedMemoryManager::DoPageInDone() won't allow MmuLock to be released |
|
1033 |
// so can only cope with a maximum of KMaxPagesInOneGo. |
|
1034 |
__NK_ASSERT_DEBUG(MmuLock::IsHeld()); |
|
1035 |
__NK_ASSERT_DEBUG(aCount <= KMaxPagesInOneGo); |
|
1036 |
||
1037 |
return iSwapManager->IsReserved(aMemory, aIndex, aCount); |
|
1038 |
} |
|
1039 |
||
1040 |
||
1041 |
void DDataPagedMemoryManager::GetSwapInfo(SVMSwapInfo& aInfoOut) |
|
1042 |
{ |
|
1043 |
iSwapManager->GetSwapInfo(aInfoOut); |
|
1044 |
} |
|
1045 |
||
1046 |
||
1047 |
TInt DDataPagedMemoryManager::SetSwapThresholds(const SVMSwapThresholds& aThresholds) |
|
1048 |
{ |
|
90
947f0dc9f7a8
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
1049 |
return iSwapManager->SetSwapThresholds(aThresholds); |
0 | 1050 |
} |
1051 |
||
1052 |
||
1053 |
void GetSwapInfo(SVMSwapInfo& aInfoOut) |
|
1054 |
{ |
|
1055 |
((DDataPagedMemoryManager*)TheDataPagedMemoryManager)->GetSwapInfo(aInfoOut); |
|
1056 |
} |
|
1057 |
||
1058 |
||
1059 |
TInt SetSwapThresholds(const SVMSwapThresholds& aThresholds) |
|
1060 |
{ |
|
1061 |
return ((DDataPagedMemoryManager*)TheDataPagedMemoryManager)->SetSwapThresholds(aThresholds); |
|
1062 |
} |
|
201
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changeset
|
1063 |
|
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changeset
|
1064 |
|
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|
1065 |
TBool GetPhysicalAccessSupported() |
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Revision: 201027
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|
1066 |
{ |
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Revision: 201027
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changeset
|
1067 |
return ((DDataPagedMemoryManager*)TheDataPagedMemoryManager)->PhysicalAccessSupported(); |
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Revision: 201027
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|
1068 |
} |
43365a9b78a3
Revision: 201027
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changeset
|
1069 |
|
43365a9b78a3
Revision: 201027
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parents:
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diff
changeset
|
1070 |
|
43365a9b78a3
Revision: 201027
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changeset
|
1071 |
TBool GetUsePhysicalAccess() |
43365a9b78a3
Revision: 201027
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|
1072 |
{ |
43365a9b78a3
Revision: 201027
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changeset
|
1073 |
return ((DDataPagedMemoryManager*)TheDataPagedMemoryManager)->UsePhysicalAccess(); |
43365a9b78a3
Revision: 201027
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parents:
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diff
changeset
|
1074 |
} |
43365a9b78a3
Revision: 201027
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parents:
109
diff
changeset
|
1075 |
|
43365a9b78a3
Revision: 201027
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parents:
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diff
changeset
|
1076 |
|
43365a9b78a3
Revision: 201027
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changeset
|
1077 |
void SetUsePhysicalAccess(TBool aUsePhysicalAccess) |
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Revision: 201027
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changeset
|
1078 |
{ |
43365a9b78a3
Revision: 201027
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parents:
109
diff
changeset
|
1079 |
((DDataPagedMemoryManager*)TheDataPagedMemoryManager)->SetUsePhysicalAccess(aUsePhysicalAccess); |
43365a9b78a3
Revision: 201027
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parents:
109
diff
changeset
|
1080 |
} |
43365a9b78a3
Revision: 201027
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parents:
109
diff
changeset
|
1081 |
|
43365a9b78a3
Revision: 201027
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parents:
109
diff
changeset
|
1082 |
|
43365a9b78a3
Revision: 201027
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parents:
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diff
changeset
|
1083 |
TUint GetPreferredDataWriteSize() |
43365a9b78a3
Revision: 201027
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parents:
109
diff
changeset
|
1084 |
{ |
43365a9b78a3
Revision: 201027
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parents:
109
diff
changeset
|
1085 |
return ((DDataPagedMemoryManager*)TheDataPagedMemoryManager)->PreferredWriteSize(); |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
1086 |
} |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
1087 |
|
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
1088 |
|
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
1089 |
TInt SetDataWriteSize(TUint aWriteShift) |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
1090 |
{ |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
1091 |
return ((DDataPagedMemoryManager*)TheDataPagedMemoryManager)->SetWriteSize(aWriteShift); |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
1092 |
} |
43365a9b78a3
Revision: 201027
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
109
diff
changeset
|
1093 |