author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 17 Dec 2009 09:24:54 +0200 | |
changeset 9 | 96e5fb8b040d |
child 22 | 2f92ad2dc5db |
permissions | -rw-r--r-- |
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// Copyright (c) 2007-2009 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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#ifndef MPAGEARRAY_H |
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#define MPAGEARRAY_H |
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#include "mmu.h" |
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const TUint KPageArraySegmentShift = 4; |
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/** |
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Number of entries in each segment RPageArray::TSegment. |
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*/ |
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const TUint KPageArraySegmentSize = (1<<KPageArraySegmentShift); |
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const TUint KPageArraySegmentMask = KPageArraySegmentSize-1; |
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/** |
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Bit position in RPageArray::TSegment::iCount for the least significant bit |
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of the 'AllocCount'. I.e. the number of entries which are not empty. |
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*/ |
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const TUint KPageArraySegmentAllocCountShift = 31-KPageArraySegmentShift; |
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const TUint KPageArraySegmentLockCountMask = (1<<KPageArraySegmentAllocCountShift)-1; |
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/** |
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Array which contains the physical addresses of all the pages contained in a DMemoryObject. |
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This is a sparse array, therefore memory storage may not exist for unallocated pages entries. |
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Where storage does exists for unallocated entries, a state value of ENotPresent indicates this. |
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For allocated entries, the redundant least significant bits of each entry contain flags and state |
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from from enum TFlags and TState. |
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To add pages to the array: |
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@code |
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RPageArray::TIter iter; |
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array.AddStart(index,count,iter); |
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RPageArray::TIter pageList; |
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while(n = iter.AddFind(pageList)) |
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{ |
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pageList.Add(n,pages); |
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// or pageList.AddContiguous |
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} |
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array.AddEnd(index,count); |
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@endcode |
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To remove pages from the array: |
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@code |
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RPageArray::TIter iter; |
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array.FindStart(index,count,iter); |
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RPageArray::TIter pageList; |
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while(n = iter.RemoveFind(pageList)) |
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{ |
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pageList.Remove(n,pages); |
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iter.FindRelease(n); |
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} |
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array.FindEnd(index,count); |
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@endcode |
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Mutual exclusion must be used to ensure that only a single Add or Remove operation is in |
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progress at any time. |
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To query the contents of the array: |
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@code |
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RPageArray::TIter iter; |
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array.FindStart(index,count,iter); |
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RPageArray::TIter pageList; |
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while(n=iter.Find(pageList)); |
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{ |
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TPhysAddr* pages; |
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while(n = pageList.Pages(pages,max)) |
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{ |
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// do something with pages |
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pageList.Skip(n); |
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} |
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iter.FindRelease(n); |
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} |
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array.FindEnd(index,count); |
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@endcode |
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*/ |
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class RPageArray |
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{ |
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public: |
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class TSegment; |
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class TIter; |
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/** |
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States for pages stored in the array. These are stored in least significant part of each entry. |
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*/ |
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enum TState |
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{ |
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ENotPresent = 0x000, ///< No page present. |
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EDecommitted = 0x001, ///< Paged Decommitted, but is pinned |
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EDecommitting = 0x002, ///< Page is in the process of being decommitted |
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EStealing = 0x003, ///< Page is in the process of being stolen |
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ERestrictingNA = 0x004, ///< Page is in the process of having no-access restrictions applied |
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EMoving = 0x005, ///< Page is in the process of being moved to another physical page |
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ECommitted = 0x006, ///< Page is committed |
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|
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EStateShift = 3, ///< Number of bits needed to store state values. |
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EStateMask = (1<<EStateShift)-1, ///< Mask for state values |
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|
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EEmptyEntry = ENotPresent ///< Value of an empty array entry |
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}; |
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|
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/** |
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Flags stored in array entries in addition to the state. |
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*/ |
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enum TFlags |
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{ |
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EUnmapVetoed = 1<<EStateShift, ///< A Steal or Decommit operation on the page has been vetoed |
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|
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EFlagsShift = 1, ///< Number of bits needed to store flags. |
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EFlagsMask = ((1<<EFlagsShift)-1)<<EStateShift ///< Mask for flags values |
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}; |
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|
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/** |
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Return true if the array entry \a aPage is currently being decommitted. |
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*/ |
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static FORCE_INLINE TBool TargetStateIsDecommitted(TPhysAddr aPage) |
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{ |
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return State(aPage)<=EStealing; |
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} |
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|
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/** |
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Return true if the array entry \a aPage is currently committed and may be being moved. |
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*/ |
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static FORCE_INLINE TBool TargetStateIsCommitted(TPhysAddr aPage) |
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{ |
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__ASSERT_COMPILE(RPageArray::EMoving == RPageArray::ECommitted - 1); |
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return State(aPage)>=EMoving; |
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} |
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|
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/** |
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Return true if the array entry \a aPage is not present. |
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*/ |
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static FORCE_INLINE TBool IsPresent(TPhysAddr aPage) |
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{ |
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return State(aPage)!=ENotPresent; |
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} |
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|
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/** |
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Return the TState value in the array entry \a aPage. |
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*/ |
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static FORCE_INLINE TState State(TPhysAddr aPage) |
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{ |
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return (TState)(aPage&EStateMask); |
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} |
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|
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/** |
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Page moving has ended so set the page back to committed if no other |
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operation has occurred/is occurring. |
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|
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@param aEntry A reference to the entry to update. |
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*/ |
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static FORCE_INLINE void MovePageEnd(TPhysAddr& aEntry) |
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{ |
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if (State(aEntry) == EMoving) |
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aEntry = (aEntry & ~EStateMask) | ECommitted; |
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} |
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|
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/** |
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Update the physical address in the array entry \a aEntry. |
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@param aEntry A reference to the entry to update. |
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@param aPhysAddr The new physical address. |
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*/ |
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static FORCE_INLINE void PageMoveNewAddr(TPhysAddr& aEntry, TPhysAddr aPhysAddr) |
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{ |
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__NK_ASSERT_DEBUG(!(aPhysAddr & EStateMask)); |
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__NK_ASSERT_DEBUG(State(aEntry) == EMoving); |
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aEntry = (aEntry & EStateMask) | aPhysAddr; |
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} |
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|
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static void Init2A(); |
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static void Init2B(DMutex* aLock); |
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|
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RPageArray(); |
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~RPageArray(); |
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|
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/** |
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Second stage constructor for the array. |
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|
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@param aMaxPages The maximum number of entries to be stored in the array. |
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@param aPreallocateMemory If true, then all the memory required to store the array |
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entries is allocated immediately - rather than on demand |
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as entries are added. |
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*/ |
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TInt Construct(TUint aMaxPages, TBool aPreallocateMemory=EFalse); |
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|
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/** |
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Allocate all memory required to store array entries. |
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This is only for use during system boot. |
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*/ |
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TInt PreallocateMemory(); |
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/** |
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Ensures the memory to store a region of array entries is allocated and locked. |
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@param aIndex Start index of region. |
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@param aCount Number of pages in region. |
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@see RPageArray::Free() |
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*/ |
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TInt Alloc(TUint aIndex, TUint aCount); |
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|
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/** |
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Revert the action of #Alloc by unlocking the memory used for a region of array entries. |
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Note, calling #Free for any entry more times than #Alloc was used will have |
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unpredictable results. |
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@param aIndex Start index of region. |
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@param aCount Number of pages in region. |
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*/ |
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void Free(TUint aIndex, TUint aCount); |
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|
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/** |
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Prepare to add (commit) pages to a region in this array. |
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This ensures the memory to store the entries is allocated and locked. It also, |
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optionally and by default, check that these entries are empty. |
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|
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@param aIndex Start index of region. |
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@param aCount Number of pages in region. |
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@param[out] aIter An iterator which covers the specified region. |
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@param aAllowExisting True if the region may contain non-empty entries. |
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False to assert entries are empty. |
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|
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@see RPageArray::AddEnd() |
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*/ |
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TInt AddStart(TUint aIndex, TUint aCount, TIter& aIter, TBool aAllowExisting=EFalse); |
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|
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/** |
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End an 'add' operation started with #AddStart. |
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This must be called to unlock any page array memory which #AddStart locked. |
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@param aIndex Start index of region. Must be same value as corresponding call to #AddStart. |
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@param aCount Number of pages in region. Must be same value as corresponding call to #AddStart. |
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*/ |
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void AddEnd(TUint aIndex, TUint aCount); |
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/** |
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Prepare to search a region in this array. |
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@param aIndex Start index of region. |
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@param aCount Number of pages in region. |
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@param[out] aIter An iterator which covers the specified region. |
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@see RPageArray::AddEnd() |
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*/ |
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void FindStart(TUint aIndex, TUint aCount, TIter& aIter); |
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/** |
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End a find operation started with #FindStart. |
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@param aIndex Start index of region. Must be same value as corresponding call to #FindStart. |
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@param aCount Number of pages in region. Must be same value as corresponding call to #FindStart. |
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*/ |
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void FindEnd(TUint aIndex, TUint aCount); |
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/** |
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Prepare to add (commit) a single page to this array. |
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This ensures the memory to store the entry is allocated and locked. |
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@param aIndex Index of entry. |
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@param[out] aPageList An iterator represents the single array entry. |
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@return Pointer to the array entry, |
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or the null pointer if memory allocation failed. |
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@see RPageArray::AddPage() |
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@see RPageArray::AddPageEnd() |
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*/ |
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TPhysAddr* AddPageStart(TUint aIndex, TIter& aPageList); |
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/** |
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Add (commit) a single page to the array. |
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@param aPageEntry The address of the array entry as returned by AddPageStart. |
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@param aPage The physical address of the page being added. |
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*/ |
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static void AddPage(TPhysAddr* aPageEntry, TPhysAddr aPage); |
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/** |
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End an 'add' operation started with #AddPageStart. |
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This must be called to unlock any page array memory which #AddPageStart locked. |
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@param aIndex Index of entry. Must be same value as corresponding call to #AddPageStart. |
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@param aDelta 1 (one), if the array entry was changed from ENotPresent state (e.g. AddPage called), |
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zero otherwise. |
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*/ |
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void AddPageEnd(TUint aIndex, TInt aDelta); |
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/** |
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Prepare to remove (decommit) a single page from this array. |
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312 |
This function is similar to TIter::RemoveFind and updates the array entry and |
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313 |
memory locking in the same way. |
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|
314 |
|
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315 |
@param aIndex Index of entry. |
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@param[out] aPageList An iterator representing the single array entry. |
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Not set if this method returns the null pointer. |
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318 |
|
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@return Pointer to the array entry, |
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or the null pointer if entry does not need decommitting. |
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321 |
|
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322 |
@see RPageArray::RemovePage() |
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Revision: 200951
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@see RPageArray::RemovePageEnd() |
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324 |
*/ |
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325 |
TPhysAddr* RemovePageStart(TUint aIndex, TIter& aPageList); |
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326 |
|
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/** |
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Remove a single page from the array. |
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329 |
|
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330 |
This function is similar to TIter::Remove and updates the array entry in the same way. |
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331 |
|
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@param aPageEntry The address of the array entry as returned by RemovePageStart. |
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333 |
|
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@return The physical address of the page which was removed, |
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or KPhysAddrInvalid if no page was removed. |
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*/ |
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static TPhysAddr RemovePage(TPhysAddr* aPageEntry); |
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338 |
|
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/** |
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End an 'remove' operation started with #RemovePageStart. |
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This must be called to unlock any page array memory which #RemovePageStart locked. |
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342 |
|
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343 |
@param aIndex Index of entry. Must be same value as corresponding call to #RemovePageStart. |
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@param aDelta 1 (one), if the array entry was set ENotPresent state (RemovePage succeeded), |
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345 |
zero otherwise. |
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346 |
*/ |
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347 |
void RemovePageEnd(TUint aIndex, TInt aDelta); |
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348 |
|
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349 |
/** |
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350 |
Prepare to restrict access to a single page in this array. |
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351 |
|
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352 |
If the page entry state indicates that the page is already more restricted |
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353 |
than being requested, then the function returns the null pointer and does nothing. |
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354 |
|
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355 |
If the page does need its access restricting then its entry in the array is set to |
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356 |
ERestrictingNA and the memory for the entry is locked. |
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|
357 |
|
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@param aIndex Index of entry. |
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@param[out] aPageList An iterator representing the single array entry. |
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360 |
Not set if this method returns the null pointer. |
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|
361 |
|
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@return Pointer to the array entry, |
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or the null pointer if entry does not need it's access restricting further. |
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364 |
|
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@see RPageArray::RestrictPageNAEnd() |
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366 |
*/ |
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TPhysAddr* RestrictPageNAStart(TUint aIndex, TIter& aPageList); |
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368 |
|
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369 |
/** |
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End an 'restrict' operation started with #RestrictPageStart. |
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371 |
This must be called to unlock any page array memory which #RestrictPageStart locked. |
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372 |
|
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373 |
@param aIndex Index of entry. Must be same value as corresponding call to #RestrictPageStart. |
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374 |
*/ |
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375 |
void RestrictPageNAEnd(TUint aIndex); |
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376 |
|
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377 |
/** |
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378 |
Prepare to steal a single page from this array. |
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|
379 |
|
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The memory for the entry is locked and if the page entry is is in one of the committed |
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381 |
states then it is changed to state EStealing. |
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|
382 |
|
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Revision: 200951
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|
383 |
@param aIndex Index of entry. |
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384 |
@param[out] aPageList An iterator representing the single array entry. |
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Revision: 200951
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385 |
Not set if this method returns the null pointer. |
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Revision: 200951
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|
386 |
|
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Revision: 200951
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387 |
@return Pointer to the array entry. |
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Revision: 200951
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|
388 |
|
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Revision: 200951
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389 |
@see RPageArray::StealPageEnd() |
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Revision: 200951
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390 |
*/ |
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Revision: 200951
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|
391 |
TPhysAddr* StealPageStart(TUint aIndex, TIter& aPageList); |
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|
392 |
|
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Revision: 200951
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|
393 |
/** |
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Revision: 200951
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|
394 |
End an 'steal' operation started with #StealPageStart. |
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Revision: 200951
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|
395 |
This must be called to unlock any page array memory which #StealPageStart locked. |
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Revision: 200951
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|
396 |
|
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Revision: 200951
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|
397 |
@param aIndex Index of entry. Must be same value as corresponding call to #StealPageStart. |
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Revision: 200951
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|
398 |
@param aDelta 1 (one), if the array entry was set ENotPresent state (the page was stolen), |
96e5fb8b040d
Revision: 200951
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|
399 |
zero otherwise. |
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Revision: 200951
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|
400 |
*/ |
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Revision: 200951
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|
401 |
void StealPageEnd(TUint aIndex, TInt aDelta); |
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Revision: 200951
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|
402 |
|
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Revision: 200951
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|
403 |
/** |
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Revision: 200951
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|
404 |
Prepare to move a page in this array by changing its state to EMoving. |
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Revision: 200951
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parents:
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|
405 |
|
96e5fb8b040d
Revision: 200951
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parents:
diff
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|
406 |
Note - the memory entry isn't locked as the RamAllocLock mutex must be held |
96e5fb8b040d
Revision: 200951
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parents:
diff
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|
407 |
through out the page moving process and therefore the page cannot be removed. |
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Revision: 200951
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parents:
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|
408 |
|
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Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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|
409 |
@param aIndex The index of the entry to be moved. |
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Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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|
410 |
@param[out] aPageList An iterator representing the single array entry. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
411 |
Not set if this method returns the null pointer. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
412 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
413 |
@return Pointer to the array entry, NULL if the page cannot be moved. |
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Revision: 200951
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parents:
diff
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|
414 |
|
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Revision: 200951
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415 |
@see RPageArray::MovePageEnd() |
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|
416 |
*/ |
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diff
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|
417 |
TPhysAddr* MovePageStart(TUint aIndex, TIter& aPageList); |
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|
418 |
|
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|
419 |
/** |
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|
420 |
Return the array entry for index \a aIndex. |
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|
421 |
*/ |
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parents:
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|
422 |
TPhysAddr Page(TUint aIndex); |
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|
423 |
|
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parents:
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|
424 |
|
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|
425 |
/** |
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|
426 |
Return a pointer to the array entry for index \a aIndex. |
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parents:
diff
changeset
|
427 |
|
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Revision: 200951
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parents:
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428 |
@return Pointer to the array entry, NULL if the page cannot found. |
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|
429 |
*/ |
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parents:
diff
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|
430 |
TPhysAddr* PageEntry(TUint aIndex); |
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|
431 |
|
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432 |
/** |
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433 |
Return the physical address of the page at index \a aIndex, or KPhysAddrInvalid if none present. |
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434 |
*/ |
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435 |
TPhysAddr PhysAddr(TUint aIndex); |
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changeset
|
436 |
|
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|
437 |
/** |
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438 |
Get the physical address for the pages stored in the specified region in the array. |
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|
439 |
|
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440 |
@param aIndex Start index of region. |
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441 |
@param aCount Number of pages in region. |
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@param[out] aPhysicalAddress If all pages are physically contiguous this is set to the start address, |
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443 |
otherwise this is set to KPhysAddrInvalid. |
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444 |
@param[out] aPhysicalPageList Pointer to array of \a aCount physical addresses which |
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|
445 |
will be filled with the physical addressed of each page in the region. |
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|
446 |
|
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447 |
@return 0 (zero) if all pages in region are physically contiguous; |
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448 |
1 (one) if pages are not physically contiguous; |
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449 |
KErrNotFound, if any page in the region is not present. |
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450 |
*/ |
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Revision: 200951
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|
451 |
TInt PhysAddr(TUint aIndex, TUint aCount, TPhysAddr& aPhysicalAddress, TPhysAddr* aPhysicalPageList); |
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|
452 |
|
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453 |
enum |
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|
454 |
{ |
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|
455 |
/** |
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|
456 |
Maximum number of bits which can be stored in an array entry by SetPagingManagerData. |
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|
457 |
*/ |
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Revision: 200951
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parents:
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|
458 |
KPagingManagerDataBits = 32-(EFlagsShift+EStateShift), |
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Revision: 200951
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|
459 |
}; |
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parents:
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|
460 |
|
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Revision: 200951
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|
461 |
enum |
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|
462 |
{ |
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|
463 |
/** |
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parents:
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|
464 |
Maximum value which can be stored in an array entry by SetPagingManagerData. |
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465 |
*/ |
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|
466 |
KMaxPagingManagerData = (1u<<KPagingManagerDataBits)-1u |
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467 |
}; |
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|
468 |
|
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|
469 |
/** |
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|
470 |
Write \a aValue to the paging manager data for index \a aIndex. |
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471 |
The value must not exceed KMaxPagingManagerData. |
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|
472 |
|
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|
473 |
This value is stored in the page array entry, if it's state is ENotPresent; |
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474 |
otherwise it is stored in the SPageInfo object for the page in the array entry. |
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|
475 |
*/ |
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|
476 |
void SetPagingManagerData(TUint aIndex, TUint aValue); |
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|
477 |
|
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|
478 |
/** |
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|
479 |
Return the paging manager data for index \a aIndex. |
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Revision: 200951
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480 |
@see RPageArray::SetPagingManagerData() |
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Revision: 200951
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|
481 |
*/ |
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|
482 |
TUint PagingManagerData(TUint aIndex); |
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|
483 |
|
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Revision: 200951
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|
484 |
|
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Revision: 200951
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|
485 |
private: |
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Revision: 200951
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|
486 |
/** |
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|
487 |
Unlock the memory used for a region of array entries. |
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Revision: 200951
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|
488 |
|
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Revision: 200951
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|
489 |
@param aSegments Copy of RPageArray::iSegments from the array. |
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|
490 |
@param aIndex Start index of region. |
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|
491 |
@param aCount Number of pages in region. |
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|
492 |
*/ |
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Revision: 200951
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|
493 |
static void Release(TSegment** aSegments, TUint aIndex, TUint aCount); |
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Revision: 200951
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|
494 |
|
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Revision: 200951
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|
495 |
/** |
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Revision: 200951
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|
496 |
Unlocking the memory used for a single array entry. |
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Revision: 200951
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|
497 |
This also updates |
96e5fb8b040d
Revision: 200951
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|
498 |
|
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Revision: 200951
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parents:
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|
499 |
@param aIndex The index of the array entry. |
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Revision: 200951
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|
500 |
@param aDelta The change in the 'present' state for the entry. This is |
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Revision: 200951
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|
501 |
1 if the entry was added (state changed from ENotPresent), |
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Revision: 200951
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|
502 |
-1 if the entry was removed (state changed to ENotPresent), |
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Revision: 200951
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|
503 |
0 otherwise. |
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Revision: 200951
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|
504 |
*/ |
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Revision: 200951
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|
505 |
void ReleasePage(TUint aIndex, TInt aDelta); |
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Revision: 200951
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|
506 |
|
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Revision: 200951
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parents:
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|
507 |
/** |
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Revision: 200951
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parents:
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|
508 |
Return the array segment in at \a aSegmentEntry, allocating a new one to this if |
96e5fb8b040d
Revision: 200951
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|
509 |
none previously existed. Return the null pointer in no segment could be allocated |
96e5fb8b040d
Revision: 200951
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|
510 |
(out of memory). |
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Revision: 200951
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parents:
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|
511 |
|
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Revision: 200951
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|
512 |
The returned segment is locked (TSegment::Lock) \a aLockCount times; this normally |
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Revision: 200951
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|
513 |
represents the number of entries in the segment which are to be accesses. |
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Revision: 200951
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|
514 |
*/ |
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Revision: 200951
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|
515 |
TSegment* GetOrAllocateSegment(TSegment** aSegmentEntry, TUint aLockCount); |
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Revision: 200951
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|
516 |
private: |
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Revision: 200951
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|
517 |
TUint8 iPreallocatedMemory; ///< Set true, if this array was constructed with pre-allocated memory. See #Construct. |
96e5fb8b040d
Revision: 200951
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diff
changeset
|
518 |
TUint iNumSegments; ///< The number of segments in array iSegments. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
519 |
TSegment** iSegments; ///< Array of TSegment objects allocated for this array. May contain null pointers. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
520 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
521 |
public: |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
522 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
523 |
Class for iterating through and manipulating a section of entries in an RPageArray. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
524 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
525 |
class TIter |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
526 |
{ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
527 |
public: |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
528 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
529 |
Find the next region of empty entries. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
530 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
531 |
@param[out] aPageList The found region. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
532 |
The #Add or #AddContiguous method is normally subsequently used on this. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
533 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
534 |
@return The number of pages in the found region. Zero indicating no more empty entries were found. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
535 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
536 |
@post This iterator is updated start immediately after the found region returned in \a aPageList. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
537 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
538 |
TUint AddFind(TIter& aPageList); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
539 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
540 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
541 |
Add pages to the array, setting each entry state as ECommitted. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
542 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
543 |
@param aCount The number of pages to add. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
544 |
@param aPages Pointer to list of \a aCount physical page addresses to add. |
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Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
545 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
546 |
void Add(TUint aCount, TPhysAddr* aPages); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
547 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
548 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
549 |
Add contiguous pages to the array, setting each entry state as ECommitted. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
550 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
551 |
@param aCount The number of pages to add. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
552 |
@param aPhysAddr The physical address of the first page to add. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
553 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
554 |
void AddContiguous(TUint aCount, TPhysAddr aPhysAddr); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
555 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
556 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
557 |
Update iterator and array state as if pages had been added with #Add. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
558 |
This is used after array entries have been directly manipulated rather |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
559 |
than being updated through #Add. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
560 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
561 |
@param aCount The number of pages to move this iterator on by. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
562 |
@param aChanged The number of new entries which have been added to the array. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
563 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
564 |
void Added(TUint aCount, TUint aChanged); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
565 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
566 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
567 |
Find the next region of non-empty entries and lock the memory used to store these. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
568 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
569 |
@param[out] aPageList The found region. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
570 |
The #Pages method is normally subsequently used on this. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
571 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
572 |
@return The number of pages in the found region. Zero indicating no more empty entries were found. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
573 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
574 |
@post This iterator is updated to start at the first found entry. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
575 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
576 |
@see RPageArray::FindRelease() |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
577 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
578 |
TUint Find(TIter& aPageList); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
579 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
580 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
581 |
Unlock the page array memory locked by #Find or #RemoveFind and move this iterator |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
582 |
past this region in preparation for a subsequent find operation. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
583 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
584 |
@param aCount The number of pages returned by the corresponding find function. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
585 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
586 |
@post This iterator is updated to start immediately after the region |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
587 |
returned by the corresponding find function. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
588 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
589 |
void FindRelease(TUint aCount); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
590 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
591 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
592 |
Find the next region of entries to be removed (decommitted). |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
593 |
The entries found are those which are neither empty nor in state EDecommitted. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
594 |
They are updated to state EDecommitting and the memory used to store these entries |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
595 |
is locked. To unlock the memory and continue searching FindRelease |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
596 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
597 |
@param[out] aPageList The found region. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
598 |
The #Remove method is normally subsequently used on this. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
599 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
600 |
@return The number of pages in the found region. Zero indicating no more empty entries were found. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
601 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
602 |
@post This iterator is updated to start at the first found entry. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
603 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
604 |
@see RPageArray::FindRelease() |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
605 |
@see RPageArray::Remove() |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
606 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
607 |
TUint RemoveFind(TIter& aPageList); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
608 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
609 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
610 |
Remove pages from the array. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
611 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
612 |
For each entry found to be in the EDecommitting state (as set by #RemoveFind) |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
613 |
the page address in the entry is appended to the supplied array (\a aPages) and |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
614 |
the entry set to EEmptyEntry. However, if the array entry has the EUnmapVetoed flag set |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
615 |
then instead the entry state is set to EDecommitted and the page address is not appended |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
616 |
to \a aPages. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
617 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
618 |
@param aMaxCount The maximum number of pages to remove. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
619 |
@param[out] aPages Pointer to array of \a aMaxCount physical addresses which |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
620 |
will be set to the physical addresses of the pages removed. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
621 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
622 |
@return The number of pages removed from the array and stored at \a aPages. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
623 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
624 |
@post This iterator is updated start immediately after the last removed entry. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
625 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
626 |
TUint Remove(TUint aMaxCount, TPhysAddr* aPages); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
627 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
628 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
629 |
Return a pointer to the array entries represented by this iterator. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
630 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
631 |
As array entries may not be stored contiguously in memory this method returns the |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
632 |
number of valid entries. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
633 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
634 |
This method should only be used for array entries which have had their |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
635 |
memory locked or for which there are other guarantees that the memory is present. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
636 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
637 |
@param[out] aStart Set to the address of the first array entry. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
638 |
@param aMaxCount The maximum count this function should return. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
639 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
640 |
@return The number of array entries starting at \a aStart which are valid. |
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Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
641 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
642 |
TUint Pages(TPhysAddr*& aStart, TUint aMaxCount=~0u); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
643 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
644 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
645 |
Move this iterator on by \a aCount pages. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
646 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
647 |
void Skip(TUint aCount); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
648 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
649 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
650 |
Prevent pages in the region covered by this iterator from having their |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
651 |
access restricted. This is achieved by returning any entries currently |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
652 |
in the specified 'being restricted' state to be fully committed again (state ECommitted). |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
653 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
654 |
@param aPageMoving ETrue to veto pages being restricted for page moving (EMoving). Set to EFalse otherwise. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
655 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
656 |
void VetoRestrict(TBool aPageMoving); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
657 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
658 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
659 |
Prevent pages in the region covered by this iterator from being removed from the array. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
660 |
This is achieved by setting the EUnmapVetoed flag for all entries with a current state |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
661 |
indicating they are being decommitted, c.f. TargetStateIsDecommitted. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
662 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
663 |
void VetoUnmap(); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
664 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
665 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
666 |
Default constructor which does not initialise members. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
667 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
668 |
TIter(); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
669 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
670 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
671 |
Return a new iterator which represents the array region [aIndex..aEndIndex). |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
672 |
The new region is asserted to be within that specified by this iterator. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
673 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
674 |
TIter Slice(TUint aIndex, TUint aEndIndex); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
675 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
676 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
677 |
Return a new iterator which represents the first \a aCount pages of this one. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
678 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
679 |
TIter Left(TUint aCount); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
680 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
681 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
682 |
Return the start index of the region being represented by this iterator. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
683 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
684 |
FORCE_INLINE TUint Index() const |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
685 |
{ return iIndex; } |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
686 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
687 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
688 |
Return the index immediately after the being represented by this iterator. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
689 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
690 |
FORCE_INLINE TUint IndexEnd() const |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
691 |
{ return iEndIndex; } |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
692 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
693 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
694 |
Return the number of entries in the region represented by this iterator. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
695 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
696 |
FORCE_INLINE TUint Count() const |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
697 |
{ return iEndIndex-iIndex; } |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
698 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
699 |
private: |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
700 |
TIter(TSegment** aSegments, TUint aIndex, TUint aEndIndex); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
701 |
void Set(TSegment** aSegments, TUint aIndex, TUint aEndIndex); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
702 |
private: |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
703 |
TSegment** iSegments; ///< Copy of RPageArray::iSegments of the array being represented by this iterator. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
704 |
TUint iIndex; ///< Start index of the array region being represented by this iterator. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
705 |
TUint iEndIndex; ///< The index immediately after the array region being represented by this iterator. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
706 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
707 |
friend class RPageArray; |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
708 |
}; |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
709 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
710 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
711 |
Class representing the memory storage for a 'segment' of entries in an RPageArray. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
712 |
Each segment contains storage for #KPageArraySegmentSize entries and the number |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
713 |
of these which are not #EEmptyEntry are counted by the 'alloc count'. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
714 |
Each segment also has a 'lock count' which acts as a reference count preventing |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
715 |
the segment from being deleted whilst it is being manipulated. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
716 |
Both of these counts are combined in #iCounts. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
717 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
718 |
class TSegment |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
719 |
{ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
720 |
private: |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
721 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
722 |
Return a newly allocated segment or the null pointer if out-ot-memory. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
723 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
724 |
static TSegment* New(); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
725 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
726 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
727 |
Delete \a aSegment and return the null pointer. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
728 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
729 |
static TSegment* Delete(TSegment* aSegment); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
730 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
731 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
732 |
Lock this segment \a aCount times. This prevents the segment being deleted. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
733 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
734 |
void Lock(TUint aCount=1); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
735 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
736 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
737 |
Unlock \a aSegment \a aCount times. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
738 |
If the lock count reaches zero and the segment has no allocated entries |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
739 |
then it is deleted and \a aSegment set to the null pointer. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
740 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
741 |
static TBool Unlock(TSegment*& aSegment, TUint aCount=1); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
742 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
743 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
744 |
Adjust the allocation count for this segment by \a aDelta. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
745 |
The allocation count keeps count of the number of entries which are not #EEmptyEntry. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
746 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
747 |
void AdjustAllocCount(TInt aDelta); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
748 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
749 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
750 |
Debug function which outputs the contents of this segment to the kernel debug port. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
751 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
752 |
void Dump(); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
753 |
private: |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
754 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
755 |
Storage for each array entry. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
756 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
757 |
TPhysAddr iPages[KPageArraySegmentSize]; |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
758 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
759 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
760 |
Two count values are stored in this member. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
761 |
Bits 0..KPageArraySegmentAllocCountShift-1 is the 'lock count' modified by the |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
762 |
Lock and Unlock methods. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
763 |
Bits KPageArraySegmentAllocCountShift..31 is the 'alloc count' modified by the |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
764 |
AdjustAllocCount method. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
765 |
When both counts are zero, this segment is empty and not being used, |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
766 |
and can therefore be deleted. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
767 |
Note, the alloc count is only valid when the lock count is zero, i.e. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
768 |
after all users have finished updating this segment. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
769 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
770 |
TUint iCounts; |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
771 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
772 |
friend class RPageArray; |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
773 |
friend class TIter; |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
774 |
}; |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
775 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
776 |
friend class RPageArray::TSegment; |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
777 |
friend class RPageArray::TIter; |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
778 |
}; |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
779 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
780 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
781 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
782 |
// |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
783 |
// RPageArray::TIter |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
784 |
// |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
785 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
786 |
FORCE_INLINE RPageArray::TIter::TIter() |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
787 |
{ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
788 |
#ifdef _DEBUG |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
789 |
iSegments = 0; |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
790 |
iIndex = 0; |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
791 |
iEndIndex = ~0u; |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
792 |
#endif |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
793 |
} |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
794 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
795 |
FORCE_INLINE RPageArray::TIter::TIter(RPageArray::TSegment** aSegments, TUint aIndex, TUint aEndIndex) |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
796 |
: iSegments(aSegments), iIndex(aIndex), iEndIndex(aEndIndex) |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
797 |
{ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
798 |
__NK_ASSERT_DEBUG(iEndIndex>=aIndex); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
799 |
} |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
800 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
801 |
FORCE_INLINE RPageArray::TIter RPageArray::TIter::Slice(TUint aIndex, TUint aEndIndex) |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
802 |
{ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
803 |
__NK_ASSERT_DEBUG(aEndIndex>=aIndex); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
804 |
__NK_ASSERT_DEBUG(aIndex>=iIndex); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
805 |
__NK_ASSERT_DEBUG(aEndIndex<=iEndIndex); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
806 |
return TIter(iSegments,aIndex,aEndIndex); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
807 |
} |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
808 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
809 |
FORCE_INLINE RPageArray::TIter RPageArray::TIter::Left(TUint aCount) |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
810 |
{ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
811 |
__NK_ASSERT_DEBUG(aCount<=Count()); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
812 |
return TIter(iSegments,iIndex,iIndex+aCount); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
813 |
} |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
814 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
815 |
FORCE_INLINE void RPageArray::TIter::Skip(TUint aCount) |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
816 |
{ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
817 |
__NK_ASSERT_DEBUG(iIndex+aCount>=iIndex); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
818 |
__NK_ASSERT_DEBUG(iIndex+aCount<=iEndIndex); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
819 |
iIndex += aCount; |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
820 |
} |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
821 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
822 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
823 |
// |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
824 |
// RPageArray |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
825 |
// |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
826 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
827 |
FORCE_INLINE void RPageArray::FindEnd(TUint /*aIndex*/, TUint /*aCount*/) |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
828 |
{ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
829 |
// nothing to do |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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830 |
} |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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831 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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832 |
FORCE_INLINE void RPageArray::AddPageEnd(TUint aIndex, TInt aDelta) |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
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833 |
{ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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834 |
MmuLock::Lock(); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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835 |
ReleasePage(aIndex,aDelta); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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836 |
MmuLock::Unlock(); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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837 |
} |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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838 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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839 |
FORCE_INLINE void RPageArray::AddPage(TPhysAddr* aPageEntry, TPhysAddr aPage) |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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840 |
{ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
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841 |
__NK_ASSERT_DEBUG(MmuLock::IsHeld()); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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842 |
__NK_ASSERT_DEBUG((aPage&KPageMask)==0); |
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Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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843 |
__NK_ASSERT_DEBUG(!RPageArray::IsPresent(*aPageEntry)); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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844 |
*aPageEntry = aPage|RPageArray::ECommitted; |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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845 |
} |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
846 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
847 |
FORCE_INLINE void RPageArray::RestrictPageNAEnd(TUint aIndex) |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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848 |
{ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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849 |
ReleasePage(aIndex,0); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
850 |
} |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
851 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
852 |
FORCE_INLINE void RPageArray::StealPageEnd(TUint aIndex, TInt aDelta) |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
853 |
{ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
854 |
ReleasePage(aIndex,-aDelta); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
855 |
} |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
856 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
857 |
FORCE_INLINE void RPageArray::RemovePageEnd(TUint aIndex, TInt aDelta) |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
858 |
{ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
859 |
MmuLock::Lock(); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
860 |
ReleasePage(aIndex,-aDelta); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
861 |
MmuLock::Unlock(); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
862 |
} |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
863 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
864 |
#endif |