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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/** |
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@file |
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@internalComponent |
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*/ |
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#ifndef MMANAGER_H |
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#define MMANAGER_H |
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#include "mpagearray.h" |
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class DMemoryObject; |
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class DMemoryMappingBase; |
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class DPageReadRequest; |
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class DPageWriteRequest; |
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/** |
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An abstract interface for performing operations on a memory object, such as allocating |
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or freeing memory. |
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There are different concrete implementations of this class for memory being managed in |
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different ways, e.g. demand paged versus unpaged memory. |
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Any particular instance of a manager will only support a subset of the methods provided. |
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The default implementations of these in this base class return KErrErrNotSupported. |
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*/ |
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class DMemoryManager : public DBase |
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{ |
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public: |
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/** |
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Create a new memory object for use with this manager. |
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@param[out] aMemory On success this is set to the address of the created memory object. |
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@param aSizeInPages Size of the memory object, in number of pages. |
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@param aAttributes Bitmask of values from enum #TMemoryAttributes. |
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@param aCreateFlags Bitmask of option flags from enum #TMemoryCreateFlags. |
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@return KErrNone if successful, otherwise one of the system wide error codes. |
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*/ |
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virtual TInt New(DMemoryObject*& aMemory, TUint aSizeInPages, TMemoryAttributes aAttributes, TMemoryCreateFlags aCreateFlags); |
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/** |
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Remove all memory from a memory object and close a reference on it. |
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If there are no longer any mappings to the memory, or other references, |
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this will result in the memory object being destroyed. However whilst |
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other references exist, cleanup of memory and other resources may be |
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delayed indefinitely. |
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@param aMemory A memory object associated with this manager. |
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*/ |
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virtual void Destruct(DMemoryObject* aMemory) =0; |
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/** |
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Allocate memory resources for a specified region of a memory object. |
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Depending on the manager, this may involve allocating physical RAM pages or |
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reserving space in a backing store. |
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@param aMemory A memory object associated with this manager. |
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@param aIndex Page index for the start of the region. |
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@param aCount Number of pages in the region. |
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@return KErrNone if successful, |
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KErrAlreadyExists if any part of the region was already allocated, |
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KErrNotSupported if the manager doesn't support this function, |
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otherwise one of the system wide error codes. |
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*/ |
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virtual TInt Alloc(DMemoryObject* aMemory, TUint aIndex, TUint aCount); |
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/** |
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Allocate physically contiguous RAM for a specified region of a memory object. |
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Important note, this function can unexpectedly fail with KErrAlreadyExists |
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if any part of the the region previously contained allocated memory which |
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had been freed but which was pinned. It is therefore not suitable for general |
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use. |
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@param aMemory A memory object associated with this manager. |
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@param aIndex Page index for the start of the region. |
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@param aCount Number of pages in the region. |
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@param aAlign Log2 of the alignment (in bytes) that the address of the |
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allocated physical RAM must have. |
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@param[out] aPhysAddr On success, this is set to the start address of the |
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allocated physical RAM. |
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@return KErrNone if successful, |
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KErrAlreadyExists if any part of the region was already allocated, |
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KErrNotSupported if the manager doesn't support this function, |
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otherwise one of the system wide error codes. |
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*/ |
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virtual TInt AllocContiguous(DMemoryObject* aMemory, TUint aIndex, TUint aCount, TUint aAlign, TPhysAddr& aPhysAddr); |
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108 |
|
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109 |
/** |
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Free any memory resources used for a specified region of a memory object. |
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This is the inverse operation to #Alloc and #AllocContiguous. |
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112 |
|
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Depending on the manager, this may involve freeing space in a backing store |
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as well as freeing any currently committed RAM. |
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115 |
|
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If part of the memory is currently pinned then resource freeing may be delayed |
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indefinitely. |
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118 |
|
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@param aMemory A memory object associated with this manager. |
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@param aIndex Page index for the start of the region. |
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@param aCount Number of pages in the region. |
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*/ |
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virtual void Free(DMemoryObject* aMemory, TUint aIndex, TUint aCount); |
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124 |
|
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125 |
/** |
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Wipe the entire memory contents of the memory object so they are in the |
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same state as if the memory had been newly allocated with #Alloc. |
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128 |
|
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This doesn't allocate any new memory, just fills the existing contents |
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with the appropriate wipe byte which is used with the memory object. |
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131 |
|
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@param aMemory A memory object associated with this manager. |
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133 |
|
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@see EMemoryCreateUseCustomWipeByte |
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@see EMemoryCreateNoWipe |
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136 |
|
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@return KErrNone, if successful; |
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otherwise KErrNotSupported, to indicate the memory object doesn't support this operation. |
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139 |
*/ |
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virtual TInt Wipe(DMemoryObject* aMemory); |
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141 |
|
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142 |
/** |
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Add a specified set of physical memory pages to a region of a memory object. |
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144 |
|
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@param aMemory A memory object associated with this manager. |
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@param aIndex Page index for the start of the region. |
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@param aCount Number of pages in the region. |
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@param aPages Pointer to array of pages to add. This must contain \a aCount |
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number of physical page addresses which are each page aligned. |
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150 |
|
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@return KErrNone if successful, |
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KErrAlreadyExists if any part of the region was already allocated, |
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KErrNotSupported if the manager doesn't support this function, |
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otherwise one of the system wide error codes. |
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155 |
*/ |
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virtual TInt AddPages(DMemoryObject* aMemory, TUint aIndex, TUint aCount, TPhysAddr* aPages); |
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157 |
|
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158 |
/** |
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Add a contiguous range of physical memory pages to a region of a memory object. |
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160 |
|
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@param aMemory A memory object associated with this manager. |
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@param aIndex Page index for the start of the region. |
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@param aCount Number of pages in the region. |
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@param aPhysAddr The page aligned start address of the pages to be added. |
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165 |
|
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@return KErrNone if successful, |
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KErrAlreadyExists if any part of the region was already allocated, |
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KErrNotSupported if the manager doesn't support this function, |
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otherwise one of the system wide error codes. |
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170 |
*/ |
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virtual TInt AddContiguous(DMemoryObject* aMemory, TUint aIndex, TUint aCount, TPhysAddr aPhysAddr); |
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172 |
|
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173 |
/** |
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Remove the memory pages from a specified region of a memory object. |
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This is the inverse operation to #AddPages and #AddContiguous. |
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176 |
|
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@param aMemory A memory object associated with this manager. |
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@param aIndex Page index for the start of the region. |
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@param aCount Number of pages in the region. |
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@param[out] aPages Pointer to an array of physical addresses which has a |
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length of \a aCount. The contents of this will be set to |
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the addresses of the pages which were removed by this |
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function. The number of valid entries in this array is |
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given by the return value of this function. |
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aPages may be the null-pointer, to indicate that these |
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page addresses aren't required by the caller. |
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187 |
|
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@return The number of pages successfully removed from the memory object. |
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This gives the number of valid entries in the array \a aPages and is |
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less-than or equal to \a aCount. |
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191 |
*/ |
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virtual TInt RemovePages(DMemoryObject* aMemory, TUint aIndex, TUint aCount, TPhysAddr* aPages); |
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193 |
|
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194 |
/** |
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Mark the specified region of a memory object as discardable. |
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The system may remove discardable pages from the memory object at any time, |
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to be reused for other purposes. |
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198 |
|
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199 |
@param aMemory A memory object associated with this manager. |
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@param aIndex Page index for the start of the region. |
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@param aCount Number of pages in the region. |
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202 |
|
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203 |
@return KErrNone if successful, |
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204 |
KErrNotSupported if the manager doesn't support this function, |
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otherwise one of the system wide error codes. |
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*/ |
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virtual TInt AllowDiscard(DMemoryObject* aMemory, TUint aIndex, TUint aCount); |
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|
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/** |
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Mark the specified region of a memory object as no longer discardable. |
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This undoes the operation of #AllowDiscard. |
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|
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If any pages in the region are no longer present, then the operation will |
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fail with KErrNotFound. In this case, the state of the pages in the region |
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is indeterminate; they may be either still discardable, not discardable, or |
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not present. |
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|
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@param aMemory A memory object associated with this manager. |
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@param aIndex Page index for the start of the region. |
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@param aCount Number of pages in the region. |
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|
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@return KErrNone if successful, |
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KErrNotFound if any page in the region was no longer present, |
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KErrNotSupported if the manager doesn't support this function, |
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otherwise one of the system wide error codes. |
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*/ |
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virtual TInt DisallowDiscard(DMemoryObject* aMemory, TUint aIndex, TUint aCount); |
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|
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/** |
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Remove a page of RAM from a memory object. |
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|
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This is only intended for use by #DPager::StealPage when it removes a page |
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from the demand paging live list. |
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234 |
|
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@param aMemory A memory object associated with this manager. |
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@param aPageInfo The page information structure of the page to be stolen. |
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This must be owned by \a aMemory. |
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238 |
|
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@return KErrNone if successful, |
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KErrInUse if the page became pinned or was subject to a page fault, |
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KErrNotSupported if the manager doesn't support this function, |
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otherwise one of the system wide error codes. |
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|
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@pre RamAllocLock held. |
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@pre MmuLock held. |
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*/ |
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virtual TInt StealPage(DMemoryObject* aMemory, SPageInfo* aPageInfo); |
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248 |
|
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/** |
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Restrict the access permissions for a page of RAM. |
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251 |
|
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This is only intended for use by #DPager::RestrictPage when it restricts |
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access to a page in the demand paging live list. |
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|
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@param aMemory A memory object associated with this manager. |
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@param aPageInfo The page information structure of the page to be restricted. |
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This must be owned by \a aMemory. |
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@param aRestriction The restriction type to apply. |
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|
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@return KErrNone if successful, |
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KErrInUse if the page state changed, e.g. became pinned or was subject to a page fault, |
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KErrNotSupported if the manager doesn't support this function, |
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otherwise one of the system wide error codes. |
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*/ |
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virtual TInt RestrictPage(DMemoryObject* aMemory, SPageInfo* aPageInfo, TRestrictPagesType aRestriction); |
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|
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/** |
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Clean a page of RAM by saving any modifications to it out to backing store. |
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269 |
|
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This function must only be called when there are no writable MMU mappings of the page. |
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271 |
|
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The function must only return a success after determining no writable MMU mappings |
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were created for the page, in which case it should also mark the page as clean using |
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SPageInfo::SetClean. |
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|
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This is only intended for use by #StealPage. |
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|
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@param aMemory A memory object associated with this manager. |
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@param aPageInfo The page information structure of the page to be cleaned. |
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This must be owned by \a aMemory. |
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@param aPageArrayEntry Reference to the page's page array entry in \a aMemory->iPages. |
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|
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@return KErrNone if successful, |
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KErrInUse if the page state changed, e.g. became pinned or was subject to a page fault making it writable, |
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KErrNotSupported if the manager doesn't support this function, |
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otherwise one of the system wide error codes. |
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|
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@pre MmuLock held |
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@pre The memory page must not have any writeable MMU mappings. |
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@post MmuLock held (but may have been released by this function) |
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*/ |
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virtual TInt CleanPage(DMemoryObject* aMemory, SPageInfo* aPageInfo, TPhysAddr*& aPageArrayEntry); |
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293 |
|
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/** |
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Process a page fault in memory associated with this manager. |
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|
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This is only intended for use by #DPager::HandlePageFault. |
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298 |
|
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@param aMemory A memory object associated with this manager whose memory was |
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accessed by the page fault. |
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@param aIndex Page index, within the memory, at which the page fault occurred. |
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@param aMapping The memory mapping in which the page fault occurred. |
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@param aMapInstanceCount The instance count of the mapping that took the page fault. |
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@param aAccessPermissions Flags from enum #TMappingPermissions indicating the memory |
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305 |
access permissions used by the page fault. E.g. the #EReadWrite |
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flag will be set for a write access. |
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|
307 |
|
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|
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@return KErrNone if the fault was handled successfully and the running program should |
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restart at the faulting instruction. |
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|
310 |
Otherwise, one of the system wide error codes indicating that the program generating |
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311 |
the page fault attempted an invalid memory access. |
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312 |
*/ |
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313 |
virtual TInt HandleFault( DMemoryObject* aMemory, TUint aIndex, DMemoryMapping* aMapping, |
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TUint aMapInstanceCount, TUint aAccessPermissions); |
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|
315 |
|
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316 |
/** |
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317 |
Pin the region of a memory object covered by a specified memory mapping. |
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|
318 |
|
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|
319 |
This function should ensure that the memory pages covered by the mapping are |
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320 |
present in the memory object and will not be removed again until an #Unpin |
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|
321 |
operation is issued. Additionally, for demand paged memory, the pages |
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must be mapped into \a aMapping using DMemoryMappingBase::PageIn. |
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|
323 |
|
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|
324 |
This function is only intended to be called via DMemoryMappingBase::DoPin |
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325 |
which is itself called from DMemoryMappingBase::Attach. |
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|
326 |
|
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327 |
@param aMemory A memory object associated with this manager. |
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@param aMapping A mapping with the DMemoryMappingBase::EPinned attribute which |
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329 |
has been attached to \a aMemory. |
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@param aPinArgs The resources to use for pinning. This must have sufficient replacement |
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331 |
pages allocated to pin every page the mapping covers. Also, the |
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332 |
value of \a aPinArgs.iReadOnly must be set to correspond to the |
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|
333 |
mappings access permissions. |
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|
334 |
|
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335 |
@return KErrNone if successful, |
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336 |
KErrNotFound if any part of the memory to be pinned was not present, |
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337 |
otherwise one of the system wide error codes. |
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338 |
*/ |
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virtual TInt Pin(DMemoryObject* aMemory, DMemoryMappingBase* aMapping, TPinArgs& aPinArgs) =0; |
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|
340 |
|
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341 |
/** |
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|
342 |
Unpin the region of a memory object covered by a specified memory mapping. |
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|
343 |
|
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|
344 |
This reverses the action of #Pin and is only intended to be called from |
96e5fb8b040d
Revision: 200951
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|
345 |
DMemoryMappingBase::Detach. |
96e5fb8b040d
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|
346 |
|
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Revision: 200951
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|
347 |
Note, pinning is a reference counting operation, therefore pages must stay |
96e5fb8b040d
Revision: 200951
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|
348 |
resident in memory (pinned) until the number of unpinning operations affecting |
96e5fb8b040d
Revision: 200951
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|
349 |
them equals the number of pinning operations. |
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|
350 |
|
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Revision: 200951
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|
351 |
@param aMemory A memory object associated with this manager. |
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|
352 |
@param aMapping A mapping with the DMemoryMappingBase::EPinned attribute which |
96e5fb8b040d
Revision: 200951
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|
353 |
has been attached to \a aMemory. |
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|
354 |
@param aPinArgs The resources used for pinning. The replacement pages allocated |
96e5fb8b040d
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|
355 |
to this will be increased for each page which was became completely |
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Revision: 200951
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|
356 |
unpinned. |
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|
357 |
*/ |
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|
358 |
virtual void Unpin(DMemoryObject* aMemory, DMemoryMappingBase* aMapping, TPinArgs& aPinArgs) =0; |
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|
359 |
|
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|
360 |
/** |
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|
361 |
@todo |
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Revision: 200951
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|
362 |
*/ |
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|
363 |
virtual TInt MovePage(DMemoryObject* aMemory, SPageInfo* aOldPageInfo, TPhysAddr& aNewPage, TUint aBlockZoneId, TBool aBlockRest); |
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|
364 |
|
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Revision: 200951
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|
365 |
/** |
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Revision: 200951
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|
366 |
Return the TZonePageType of the pages that the memory manager can allocate and free. |
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Revision: 200951
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|
367 |
*/ |
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Revision: 200951
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|
368 |
virtual TZonePageType PageType(); |
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Revision: 200951
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|
369 |
|
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Revision: 200951
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|
370 |
/** |
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Revision: 200951
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|
371 |
Bitmask representing the different cleanup operations which can be performed |
96e5fb8b040d
Revision: 200951
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|
372 |
on a memory object. The operations are queued with #QueueCleanup and |
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Revision: 200951
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|
373 |
pending operations are stored in each memory object's DMemoryObject::iCleanupFlags. |
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Revision: 200951
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|
374 |
*/ |
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|
375 |
enum TCleanupOperationFlag |
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Revision: 200951
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|
376 |
{ |
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Revision: 200951
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|
377 |
/** |
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Revision: 200951
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|
378 |
Execute #DoCleanupDecommitted. |
96e5fb8b040d
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|
379 |
*/ |
96e5fb8b040d
Revision: 200951
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|
380 |
ECleanupDecommitted = 1<<0, |
96e5fb8b040d
Revision: 200951
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|
381 |
|
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Revision: 200951
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|
382 |
/** |
96e5fb8b040d
Revision: 200951
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|
383 |
Internal flag which indicates that cleanup has been queued. |
96e5fb8b040d
Revision: 200951
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|
384 |
*/ |
96e5fb8b040d
Revision: 200951
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|
385 |
ECleanupIsQueued = 1u<<31 |
96e5fb8b040d
Revision: 200951
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|
386 |
}; |
96e5fb8b040d
Revision: 200951
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|
387 |
|
96e5fb8b040d
Revision: 200951
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parents:
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|
388 |
/** |
96e5fb8b040d
Revision: 200951
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|
389 |
Queue a cleanup operation to run for a specified memory object. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
390 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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|
391 |
The operations are run from #CleanupFunction which is called |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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|
392 |
from a #TMemoryCleanup callback. |
96e5fb8b040d
Revision: 200951
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|
393 |
|
96e5fb8b040d
Revision: 200951
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|
394 |
@param aMemory The memory object. |
96e5fb8b040d
Revision: 200951
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|
395 |
@param aCleanupOp The operation to perform. |
96e5fb8b040d
Revision: 200951
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|
396 |
*/ |
96e5fb8b040d
Revision: 200951
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|
397 |
static void QueueCleanup(DMemoryObject* aMemory, TCleanupOperationFlag aCleanupOp); |
96e5fb8b040d
Revision: 200951
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parents:
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|
398 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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|
399 |
protected: |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
400 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
401 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
402 |
Unmap and free the RAM pages used for a specified region of a memory object. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
403 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
404 |
Successfully freed pages are returned to the system's free RAM pool. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
405 |
However, pinned pages are placed in the decommitted state |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
406 |
(RPageArray::EDecommitted) and remain allocated to the memory object. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
407 |
These decommitted pages may ultimately get freed by #FreeDecommitted |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
408 |
or they may become re-allocated with #ReAllocDecommitted. |
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|
409 |
|
96e5fb8b040d
Revision: 200951
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parents:
diff
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|
410 |
@param aMemory A memory object associated with this manager. |
96e5fb8b040d
Revision: 200951
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parents:
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|
411 |
@param aIndex Page index for the start of the region. |
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Revision: 200951
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|
412 |
@param aCount Number of pages in the region. |
96e5fb8b040d
Revision: 200951
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parents:
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|
413 |
*/ |
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Revision: 200951
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|
414 |
static void DoFree(DMemoryObject* aMemory, TUint aIndex, TUint aCount); |
96e5fb8b040d
Revision: 200951
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|
415 |
|
96e5fb8b040d
Revision: 200951
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parents:
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|
416 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
417 |
Re-allocate all decommitted but still present RAM pages in a region of a memory object. |
96e5fb8b040d
Revision: 200951
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parents:
diff
changeset
|
418 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
419 |
When pinned memory is freed from a memory object it is placed in the |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
420 |
RPageArray::EDecommitted state. This function is called by #Alloc to place |
96e5fb8b040d
Revision: 200951
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parents:
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|
421 |
all such memory back into the committed state as if it had been newly allocated. |
96e5fb8b040d
Revision: 200951
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parents:
diff
changeset
|
422 |
|
96e5fb8b040d
Revision: 200951
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parents:
diff
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|
423 |
@param aMemory A memory object associated with this manager. |
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Revision: 200951
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parents:
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|
424 |
@param aIndex Page index for the start of the region. |
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Revision: 200951
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|
425 |
@param aCount Number of pages in the region. |
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|
426 |
*/ |
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Revision: 200951
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parents:
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|
427 |
static void ReAllocDecommitted(DMemoryObject* aMemory, TUint aIndex, TUint aCount); |
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Revision: 200951
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|
428 |
|
96e5fb8b040d
Revision: 200951
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parents:
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|
429 |
/** |
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Revision: 200951
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parents:
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|
430 |
Attempt to free all decommitted but still present RAM pages in a region of a memory object. |
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Revision: 200951
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parents:
diff
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|
431 |
|
96e5fb8b040d
Revision: 200951
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parents:
diff
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|
432 |
When pinned memory is freed from a memory object it is placed in the |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
433 |
RPageArray::EDecommitted state. This function is called by #DoCleanupDecommitted |
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Revision: 200951
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|
434 |
to attempt to fully free this memory if it is no longer pinned. |
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Revision: 200951
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parents:
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|
435 |
|
96e5fb8b040d
Revision: 200951
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parents:
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|
436 |
@param aMemory A memory object associated with this manager. |
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Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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|
437 |
@param aIndex Page index for the start of the region. |
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Revision: 200951
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parents:
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|
438 |
@param aCount Number of pages in the region. |
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Revision: 200951
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parents:
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|
439 |
*/ |
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Revision: 200951
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parents:
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|
440 |
static void FreeDecommitted(DMemoryObject* aMemory, TUint aIndex, TUint aCount); |
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Revision: 200951
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|
441 |
|
96e5fb8b040d
Revision: 200951
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parents:
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changeset
|
442 |
/** |
96e5fb8b040d
Revision: 200951
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parents:
diff
changeset
|
443 |
Implementation factor for #FreeDecommitted and #DoFree. |
96e5fb8b040d
Revision: 200951
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parents:
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|
444 |
*/ |
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Revision: 200951
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|
445 |
static TInt FreePages(DMemoryObject* aMemory, RPageArray::TIter aPageList); |
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Revision: 200951
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|
446 |
|
96e5fb8b040d
Revision: 200951
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parents:
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changeset
|
447 |
/** |
96e5fb8b040d
Revision: 200951
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parents:
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|
448 |
Cleanup any decommitted memory associated with a memory object. |
96e5fb8b040d
Revision: 200951
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parents:
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|
449 |
|
96e5fb8b040d
Revision: 200951
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parents:
diff
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|
450 |
This is called for memory objects which were queued for cleanup (#QueueCleanup) |
96e5fb8b040d
Revision: 200951
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parents:
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|
451 |
with the #ECleanupDecommitted operation. A manager class must override this method |
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Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
452 |
if it triggers this cleanup type - the default implementation faults in debug builds. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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changeset
|
453 |
|
96e5fb8b040d
Revision: 200951
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parents:
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|
454 |
@param aMemory The memory object requiring cleanup. |
96e5fb8b040d
Revision: 200951
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parents:
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|
455 |
*/ |
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Revision: 200951
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parents:
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|
456 |
virtual void DoCleanupDecommitted(DMemoryObject* aMemory); |
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Revision: 200951
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|
457 |
|
96e5fb8b040d
Revision: 200951
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|
458 |
private: |
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Revision: 200951
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|
459 |
/** |
96e5fb8b040d
Revision: 200951
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parents:
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|
460 |
Callback function which executes all pending operations queued with #QueueCleanup. |
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Revision: 200951
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|
461 |
*/ |
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Revision: 200951
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parents:
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|
462 |
static void CleanupFunction(TAny*); |
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Revision: 200951
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|
463 |
|
96e5fb8b040d
Revision: 200951
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parents:
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|
464 |
/** |
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Revision: 200951
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|
465 |
Head of a singly linked list of memory objects which require a cleanup operation. |
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Revision: 200951
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parents:
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|
466 |
Each object in the list is linked using its DMemoryObject::iCleanupNext member. |
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Revision: 200951
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parents:
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|
467 |
@see #QueueCleanup |
96e5fb8b040d
Revision: 200951
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parents:
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changeset
|
468 |
*/ |
96e5fb8b040d
Revision: 200951
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parents:
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|
469 |
static DMemoryObject* iCleanupHead; |
96e5fb8b040d
Revision: 200951
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|
470 |
|
96e5fb8b040d
Revision: 200951
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parents:
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changeset
|
471 |
/** |
96e5fb8b040d
Revision: 200951
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parents:
diff
changeset
|
472 |
Spinlock used during memory cleanup operations to protect object list (#iCleanupHead |
96e5fb8b040d
Revision: 200951
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parents:
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|
473 |
and DMemoryObject::iCleanupNext) and operation flags (DMemoryObject::iCleanupFlags). |
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Revision: 200951
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|
474 |
*/ |
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Revision: 200951
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|
475 |
static TSpinLock iCleanupLock; |
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Revision: 200951
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|
476 |
}; |
96e5fb8b040d
Revision: 200951
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changeset
|
477 |
|
96e5fb8b040d
Revision: 200951
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parents:
diff
changeset
|
478 |
|
96e5fb8b040d
Revision: 200951
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parents:
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|
479 |
|
96e5fb8b040d
Revision: 200951
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parents:
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|
480 |
/** |
96e5fb8b040d
Revision: 200951
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|
481 |
The bass class for memory managers implementing the different forms of demand paging. |
96e5fb8b040d
Revision: 200951
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|
482 |
The provides the common functions required to 'page in' and 'page out' memory. |
96e5fb8b040d
Revision: 200951
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|
483 |
*/ |
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Revision: 200951
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|
484 |
class DPagedMemoryManager : public DMemoryManager |
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Revision: 200951
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|
485 |
{ |
96e5fb8b040d
Revision: 200951
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|
486 |
public: |
96e5fb8b040d
Revision: 200951
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|
487 |
// from DMemoryManager... |
96e5fb8b040d
Revision: 200951
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|
488 |
virtual TInt New(DMemoryObject*& aMemory, TUint aSizeInPages, TMemoryAttributes aAttributes, TMemoryCreateFlags aCreateFlags); |
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|
489 |
virtual void Destruct(DMemoryObject* aMemory); |
96e5fb8b040d
Revision: 200951
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|
490 |
virtual TInt MovePage(DMemoryObject* aMemory, SPageInfo* aOldPageInfo, TPhysAddr& aNewPage, TUint aBlockZoneId, TBool aBlockRest); |
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|
491 |
virtual TInt StealPage(DMemoryObject* aMemory, SPageInfo* aPageInfo); |
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Revision: 200951
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|
492 |
virtual TInt RestrictPage(DMemoryObject* aMemory, SPageInfo* aPageInfo, TRestrictPagesType aRestriction); |
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Revision: 200951
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|
493 |
virtual TInt HandleFault( DMemoryObject* aMemory, TUint aIndex, DMemoryMapping* aMapping, |
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|
494 |
TUint aMapInstanceCount, TUint aAccessPermissions); |
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Revision: 200951
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|
495 |
virtual TInt Pin(DMemoryObject* aMemory, DMemoryMappingBase* aMapping, TPinArgs& aPinArgs); |
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|
496 |
virtual void Unpin(DMemoryObject* aMemory, DMemoryMappingBase* aMapping, TPinArgs& aPinArgs); |
96e5fb8b040d
Revision: 200951
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|
497 |
|
96e5fb8b040d
Revision: 200951
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|
498 |
/** |
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Revision: 200951
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|
499 |
Called by DPager::Init3 during third stage initialisation. |
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Revision: 200951
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|
500 |
*/ |
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Revision: 200951
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|
501 |
virtual void Init3() = 0; |
96e5fb8b040d
Revision: 200951
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|
502 |
|
96e5fb8b040d
Revision: 200951
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|
503 |
/** |
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Revision: 200951
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|
504 |
Called by Kern::InstallPagingDevice to notify memory managers when a paging device |
96e5fb8b040d
Revision: 200951
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|
505 |
is installed. A manager requires use of these paging devices to access storage media |
96e5fb8b040d
Revision: 200951
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|
506 |
where demand paged content is stored. |
96e5fb8b040d
Revision: 200951
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|
507 |
*/ |
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Revision: 200951
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parents:
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|
508 |
virtual TInt InstallPagingDevice(DPagingDevice* aDevice) = 0; |
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Revision: 200951
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|
509 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
510 |
protected: |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
511 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
512 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
513 |
Acquire a request object suitable for issuing to #ReadPages to |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
514 |
obtain the data content of a specified region of a memory object. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
515 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
516 |
Once the request object is finished with it must be released (DPagingRequest::Release). |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
517 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
518 |
Typically this function is implemented by calling DPagingRequestPool::AcquirePageReadRequest |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
519 |
on the request pool of the paging device appropriate to the memory object. |
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 |
@param[out] aRequest On success this is set to the address of the request object. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
522 |
@param aMemory A memory object associated with this manager. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
523 |
@param aIndex Page index for the start of the region. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
524 |
@param aCount Number of pages in the region. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
525 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
526 |
@return KErrNone if successful, |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
527 |
otherwise one of the system wide error codes. |
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 |
virtual TInt AcquirePageReadRequest(DPageReadRequest*& aRequest, DMemoryObject* aMemory, TUint aIndex, TUint aCount) = 0; |
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 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
532 |
Acquire a request object suitable for issuing to #WritePages to |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
533 |
save the data content of a specified region of a memory object. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
534 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
535 |
Once the request object is finished with it must be released (DPagingRequest::Release). |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
536 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
537 |
Typically this function is implemented by calling DPagingRequestPool::AcquirePageWriteRequest |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
538 |
on the request pool of the paging device appropriate to the memory object. |
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 |
@param[out] aRequest On success this is set to the address of the request object. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
541 |
@param aMemory A memory object associated with this manager. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
542 |
@param aIndex Page index for the start of the region. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
543 |
@param aCount Number of pages in the region. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
544 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
545 |
@return KErrNone if successful, |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
546 |
otherwise one of the system wide error codes. |
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 |
virtual TInt AcquirePageWriteRequest(DPageWriteRequest*& aRequest, DMemoryObject* aMemory, TUint aIndex, TUint aCount); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
549 |
|
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 |
Obtain the data content of a specified region of a memory object by reading it from |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
552 |
storage media. |
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 |
The memory region must be the same as, or a subset of, the region used when obtaining |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
555 |
the request object \a aRequest. |
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 |
@param aMemory A memory object associated with this manager. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
558 |
@param aIndex Page index for the start of the region. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
559 |
@param aCount Number of pages in the region. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
560 |
@param aPages Pointer to array of pages to read into. This must contain \a aCount |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
561 |
number of physical page addresses which are each page aligned. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
562 |
@param aRequest A request object previously obtained with #AcquirePageReadRequest. |
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 |
@return KErrNone if successful, |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
565 |
otherwise one of the system wide error codes. |
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 |
virtual TInt ReadPages(DMemoryObject* aMemory, TUint aIndex, TUint aCount, TPhysAddr* aPages, DPageReadRequest* aRequest) =0; |
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 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
570 |
Save the data content of a specified region of a memory object by writing it to |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
571 |
storage media. This is intended for use by an implementation of #CleanPage. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
572 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
573 |
The memory region must be the same as, or a subset of, the region used when obtaining |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
574 |
the request object \a aRequest. |
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 |
@param aMemory A memory object associated with this manager. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
577 |
@param aIndex Page index for the start of the region. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
578 |
@param aCount Number of pages in the region. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
579 |
@param aPages Pointer to array of pages to read into. This must contain \a aCount |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
580 |
number of physical page addresses which are each page aligned. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
581 |
@param aRequest A request object previously obtained with #AcquirePageWriteRequest. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
582 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
583 |
@return KErrNone if successful, |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
584 |
otherwise one of the system wide error codes. |
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 |
virtual TInt WritePages(DMemoryObject* aMemory, TUint aIndex, TUint aCount, TPhysAddr* aPages, DPageWriteRequest* aRequest); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
587 |
|
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 |
Check if a region of a memory object has been allocated. E.g. that #Alloc |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
590 |
has reserved backing store for the memory and this has has not yet been freed |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
591 |
by #Free or #Destruct. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
592 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
593 |
@param aMemory A memory object associated with this manager. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
594 |
@param aIndex Page index for the start of the region. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
595 |
@param aCount Number of pages in the region. |
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 |
@return True if the whole region has allocated storage, false otherwise. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
598 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
599 |
@pre #MmuLock held. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
600 |
@post #MmuLock held and must not have been released by this function. |
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 |
virtual TBool IsAllocated(DMemoryObject* aMemory, TUint aIndex, TUint aCount) =0; |
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 |
protected: |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
605 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
606 |
Do the action of #Pin for a subregion of a memory mapping. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
607 |
This is an implementation factor used to implement #Pin. |
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 |
@param aMemory A memory object associated with this manager. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
610 |
@param aIndex Page index for the start of the region. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
611 |
@param aCount Number of pages in the region. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
612 |
@param aMapping A mapping with the DMemoryMappingBase::EPinned attribute which |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
613 |
has been attached to \a aMemory. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
614 |
@param aPinArgs The resources to use for pinning. This must have sufficient replacement |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
615 |
pages allocated to pin every page the mapping covers, and the |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
616 |
value of \a aPinArgs.iReadOnly must be set to correspond to the |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
617 |
mappings access permissions. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
618 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
619 |
@return KErrNone if successful, |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
620 |
KErrNotFound if any part of the memory to be pinned was not present, |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
621 |
otherwise one of the system wide error codes. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
622 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
623 |
TInt DoPin(DMemoryObject* aMemory, TUint aIndex, TUint aCount, DMemoryMappingBase* aMapping, TPinArgs& aPinArgs); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
624 |
|
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 |
Update a single page in a memory object during memory pinning handling. |
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 |
This includes assigning a new physical page of RAM to the memory object (optional) |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
629 |
then updating the pages state to ensure that it is pinned i.e. doesn't take |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
630 |
part in demand paging until unpinned again. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
631 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
632 |
This is called from #DoPin. |
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 |
@param aMemory A memory object associated with this manager. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
635 |
@param aIndex Page index, within the memory, for the page. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
636 |
@param aPageInfo The page information structure of the new physical page |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
637 |
to assign to the \a aMemory. If there was an existing |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
638 |
assigned page this new page is freed back to the paging |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
639 |
system. Specifying a new page is optional, use the null-pointer |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
640 |
to indicate its absence. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
641 |
@param aPageArrayEntry Reference to the page's page array entry in \a aMemory->iPages. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
642 |
@param aPinArgs The resources to use for pinning. This must a replacement |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
643 |
pages allocated. |
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 |
@return 1 (one) if the new page was assigned to the memory object. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
646 |
@return 0 (zero) if a page already existed at the specified index. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
647 |
@return KErrNotFound if there no page could be assigned, either because |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
648 |
none was given, or because memory is in the process of being |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
649 |
decommitted from the memory object. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
650 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
651 |
@pre #MmuLock held. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
652 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
653 |
virtual TInt PageInPinnedDone(DMemoryObject* aMemory, TUint aIndex, SPageInfo* aPageInfo, TPhysAddr* aPageArrayEntry, TPinArgs& aPinArgs); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
654 |
|
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 |
Implementation factor for #PageInDone and #PageInPinnedDone. |
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 |
@pre #MmuLock held. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
659 |
@post #MmuLock held and must not have been released by this function. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
660 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
661 |
TInt DoPageInDone(DMemoryObject* aMemory, TUint aIndex, SPageInfo*& aPageInfo, TPhysAddr* aPageArrayEntry, TBool aPinning); |
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 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
664 |
Do the action of #Unpin for a subregion of a memory mapping. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
665 |
This is an implementation factor used to implement #Unpin. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
666 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
667 |
Must only be used for memory pages already successfully pinned. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
668 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
669 |
@param aMemory A memory object associated with this manager. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
670 |
@param aIndex Page index for the start of the region. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
671 |
@param aCount Number of pages in the region. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
672 |
@param aMapping A mapping with the DMemoryMappingBase::EPinned attribute which |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
673 |
has been attached to \a aMemory. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
674 |
@param aPinArgs The resources used for pinning. The replacement pages allocated |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
675 |
to this will be increased for each page which was became completely |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
676 |
unpinned. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
677 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
678 |
virtual void DoUnpin(DMemoryObject* aMemory, TUint aIndex, TUint aCount, DMemoryMappingBase* aMapping, TPinArgs& aPinArgs); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
679 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
680 |
// from DMemoryManager... |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
681 |
virtual void DoCleanupDecommitted(DMemoryObject* aMemory); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
682 |
virtual TZonePageType PageType(); |
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 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
685 |
Decompress demand paged data. |
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 |
The compression types supported are: |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
688 |
- Byte-Pair, specified with a compression type of |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
689 |
SRomPageInfo::EBytePair or KUidCompressionBytePair. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
690 |
- No Compression, specified with a compression type of zero. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
691 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
692 |
@param aCompressionType The type of decompression to use. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
693 |
@param aDst The destination address of the decompressed data. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
694 |
@param aDstBytes The expected size of the data once it is decompressed. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
695 |
@param aSrc The address for the data to decompress. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
696 |
@param aSrcBytes The size of the data to decompress. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
697 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
698 |
@return The size of decompressed data in bytes or one of the system wide error codes. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
699 |
*/ |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
700 |
TInt Decompress(TUint32 aCompressionType, TLinAddr aDst, TUint aDstBytes, TLinAddr aSrc, TUint aSrcBytes); |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
701 |
|
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 |
/** |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
704 |
Update a single page in a memory object during page fault handling. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
705 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
706 |
This includes assigning a new physical page of RAM to the memory object (optional) |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
707 |
then updating the demand paging live list to reflect the fact that the memory page |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
708 |
was newly accessed. |
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 |
This is called from #HandleFault. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
711 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
712 |
@param aMemory A memory object associated with this manager. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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diff
changeset
|
713 |
@param aIndex Page index, within the memory, for the page. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
714 |
@param aPageInfo The page information structure of the new physical page |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
715 |
to assign to the \a aMemory. If there was an existing |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
716 |
assigned page this new page is freed back to the paging |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
717 |
system. Specifying a new page is optional, use the null-pointer |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
718 |
to indicate its absence. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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diff
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|
719 |
@param aPageArrayEntry Reference to the page's page array entry in \a aMemory->iPages. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
720 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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721 |
@return 1 (one) if the new page was assigned to the memory object. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
722 |
@return 0 (zero) if a page already existed at the specified index. |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
723 |
@return KErrNotFound if there no page could be assigned, either because |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
724 |
none was given, or because memory is in the process of being |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
725 |
decommitted from the memory object. |
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 |
@pre #MmuLock held. |
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 |
TInt PageInDone(DMemoryObject* aMemory, TUint aIndex, SPageInfo* aPageInfo, TPhysAddr* aPageArrayEntry); |
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 |
|
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 |
extern DMemoryManager* TheUnpagedMemoryManager; ///< The #DUnpagedMemoryManager |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
735 |
extern DMemoryManager* TheMovableMemoryManager; ///< The #DMovableMemoryManager |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
736 |
extern DMemoryManager* TheDiscardableMemoryManager; ///< The #DDiscardableMemoryManager |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
737 |
extern DMemoryManager* TheHardwareMemoryManager; ///< The #DHardwareMemoryManager |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
738 |
extern DPagedMemoryManager* TheRomMemoryManager; ///< The #DRomMemoryManager |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
739 |
extern DPagedMemoryManager* TheDataPagedMemoryManager; ///< The #DDataPagedMemoryManager |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
740 |
extern DPagedMemoryManager* TheCodePagedMemoryManager; ///< The #DCodePagedMemoryManager |
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
741 |
|
96e5fb8b040d
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
742 |
#endif |