crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianSymbolLib/Relocator/SymbolRelocator.cs
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianSymbolLib/Relocator/SymbolRelocator.cs Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,207 @@
+/*
+* Copyright (c) 2004-2008 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.IO;
+using SymbianUtils;
+using SymbianUtils.Range;
+using SymbianUtils.Tracer;
+using SymbianUtils.FileTypes;
+using SymbianStructuresLib.Debug.Symbols;
+using SymbianStructuresLib.CodeSegments;
+using SymbianSymbolLib.DbgEnginePlugin;
+using SymbianSymbolLib.SourceManagement.Source;
+using SymbianSymbolLib.QueryAPI;
+
+namespace SymbianSymbolLib.Relocator
+{
+ internal class SymbolRelocator : IEnumerable<SymSourceAndCollection>
+ {
+ #region Constructors
+ public SymbolRelocator( SymbolPlugin aPlugin )
+ {
+ iPlugin = aPlugin;
+ }
+ #endregion
+
+ #region API
+ public SymbolCollection Activate( CodeSegDefinition aCodeSegment )
+ {
+ SymbolCollection ret = null;
+
+ // Find the corresponding code seg
+ SymSourceAndCollection pair = SourceManager[ aCodeSegment ];
+ if ( pair != null )
+ {
+ SymbolCollection col = pair.Collection;
+ lock ( col.SyncRoot )
+ {
+ if ( col.IsFixed )
+ {
+ // Cannot activate a fixed code segment - TODO: should this return "true", i.e. already activated?
+ }
+ else
+ {
+ bool safe = CheckSafeToActivate( aCodeSegment );
+ if ( safe )
+ {
+ // Deep copy the collection
+ SymbolCollection dupe = SymbolCollection.NewCopy( iPlugin.ProvisioningManager.IdAllocator, col );
+
+ // Set new process-specific relocated base address
+ dupe.Relocate( aCodeSegment.Base );
+
+ // Save so that we can unload it later
+ pair = new SymSourceAndCollection( pair, dupe );
+ AddToActivationList( pair, aCodeSegment );
+
+ // We managed to activate a binary, so return the collection
+ ret = dupe;
+
+ iPlugin.Trace( "[S] ACTIVATE - {0}", aCodeSegment );
+ }
+ }
+ }
+ }
+ //
+ return ret;
+ }
+
+ public bool Deactivate( CodeSegDefinition aCodeSegment )
+ {
+ bool activated = iActivationLUT.ContainsKey( aCodeSegment );
+ if ( activated )
+ {
+ SymSourceAndCollection pair = iActivationLUT[ aCodeSegment ];
+ //
+ lock ( iActivatedCollections )
+ {
+ iActivatedCollections.Remove( pair.Collection );
+ }
+ lock ( iActivationLUT )
+ {
+ iActivationLUT.Remove( aCodeSegment );
+ }
+ //
+ iPlugin.Trace( "[S] DEACTIVATE - {0} @ {1}", pair.Collection.FileName, aCodeSegment );
+ }
+ //
+ return activated;
+ }
+ #endregion
+
+ #region Properties
+ public SymbolCollectionList CollectionList
+ {
+ get { return iActivatedCollections; }
+ }
+
+ public int Count
+ {
+ get
+ {
+ lock ( iActivatedCollections )
+ {
+ lock ( iActivationLUT )
+ {
+ System.Diagnostics.Debug.Assert( iActivatedCollections.Count == iActivationLUT.Count );
+ return iActivationLUT.Count;
+ }
+ }
+ }
+ }
+ #endregion
+
+ #region Internal methods
+ internal SymbolPlugin Plugin
+ {
+ get { return iPlugin; }
+ }
+
+ internal SymSourceManager SourceManager
+ {
+ get { return Plugin.SourceManager; }
+ }
+
+ private void AddToActivationList( SymSourceAndCollection aEntry, CodeSegDefinition aCodeSegment )
+ {
+ lock ( iActivatedCollections )
+ {
+ iActivatedCollections.AddAndBuildCache( aEntry.Collection );
+ }
+ lock ( iActivationLUT )
+ {
+ iActivationLUT.Add( aCodeSegment, aEntry );
+ }
+ }
+
+ private bool CheckSafeToActivate( CodeSegDefinition aCodeSegment )
+ {
+ lock ( iActivationLUT )
+ {
+ bool alreadyExists = iActivationLUT.ContainsKey( aCodeSegment );
+ if ( alreadyExists )
+ {
+ // Specified code segment already activated
+ return false;
+ }
+ else
+ {
+ // We must check that there's no overlap in activation ranges between code segments.
+ foreach ( KeyValuePair<CodeSegDefinition, SymSourceAndCollection> kvp in iActivationLUT )
+ {
+ AddressRange range = kvp.Key;
+ if ( range.Contains( aCodeSegment ) )
+ {
+ // Overlaps with existing activated code segment
+ return false;
+ }
+ }
+ }
+ //
+ return true;
+ }
+ }
+ #endregion
+
+ #region From IEnumerable<SymSourceAndCollection>
+ public IEnumerator<SymSourceAndCollection> GetEnumerator()
+ {
+ foreach ( KeyValuePair<CodeSegDefinition, SymSourceAndCollection> kvp in iActivationLUT )
+ {
+ yield return kvp.Value;
+ }
+ }
+
+ System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
+ {
+ foreach ( KeyValuePair<CodeSegDefinition, SymSourceAndCollection> kvp in iActivationLUT )
+ {
+ yield return kvp.Value;
+ }
+ }
+ #endregion
+
+ #region Data members
+ private readonly SymbolPlugin iPlugin;
+ private SymbolCollectionList iActivatedCollections = new SymbolCollectionList();
+ private Dictionary<CodeSegDefinition, SymSourceAndCollection> iActivationLUT = new Dictionary<CodeSegDefinition, SymSourceAndCollection>();
+ #endregion
+ }
+}