1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/graphics/windowing/windowserver/test/tdynamicres/src/wsgcedebugsession.cpp Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,177 @@
1.4 +// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
1.5 +// All rights reserved.
1.6 +// This component and the accompanying materials are made available
1.7 +// under the terms of "Eclipse Public License v1.0"
1.8 +// which accompanies this distribution, and is available
1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
1.10 +//
1.11 +// Initial Contributors:
1.12 +// Nokia Corporation - initial contribution.
1.13 +//
1.14 +// Contributors:
1.15 +//
1.16 +// Description:
1.17 +//
1.18 +
1.19 +/**
1.20 + @file
1.21 +*/
1.22 +
1.23 +#include "wsgcedebugsession.h"
1.24 +
1.25 +RWsDebugSession::RWsDebugSession(TInt aScreenNo /*= -1*/):
1.26 + iScreenNo(aScreenNo),
1.27 + iSurfaceUpdateSerial(-1)
1.28 + {
1.29 + iSurfaceListBuffer.CreateMax(48);
1.30 + }
1.31 +
1.32 +RWsDebugSession::~RWsDebugSession()
1.33 + {
1.34 + iSurfaceListBuffer.Close();
1.35 +
1.36 + }
1.37 +
1.38 +TBool RWsDebugSession::ResetUpdated()
1.39 + {
1.40 + TInt surfaceUpdateSerial=DebugInfo(EWsDebugSerialSurfacesUpdated,iScreenNo);
1.41 + TBool retVal=(iSurfaceUpdateSerial!=surfaceUpdateSerial);
1.42 + iSurfaceUpdateSerial=surfaceUpdateSerial;
1.43 + return retVal;
1.44 + }
1.45 +
1.46 +TInt RWsDebugSession::ResetUpdatedAndGetSurfaceWindowList(const TWsDebugWindowId * & aWinList)
1.47 + {
1.48 + iSurfaceUpdateSerial=DebugInfo(EWsDebugSerialSurfacesUpdated,iScreenNo);
1.49 + TInt reqSize=DebugInfo(EWsDebugSurfaceWindowList,iSurfaceListBuffer,iScreenNo);
1.50 + while (reqSize>iSurfaceListBuffer.MaxLength())
1.51 + {
1.52 + iSurfaceListBuffer.Close();
1.53 + iSurfaceListBuffer.CreateMax(reqSize);
1.54 + iSurfaceUpdateSerial=DebugInfo(EWsDebugSerialSurfacesUpdated,iScreenNo);
1.55 + reqSize=DebugInfo(EWsDebugSurfaceWindowList,iSurfaceListBuffer,iScreenNo);
1.56 + }
1.57 + if (reqSize==KErrCancel)
1.58 + {
1.59 + aWinList=NULL;
1.60 + return 0;
1.61 + }
1.62 + else
1.63 + {
1.64 + aWinList=(TWsDebugWindowId*)iSurfaceListBuffer.Ptr();
1.65 + return reqSize/sizeof(TWsDebugWindowId);
1.66 + }
1.67 + }
1.68 +/**
1.69 + * Stream data into the provided buffer and point the return object pointer to it.
1.70 + * The pointer is left null if the method returns an error code or the buffer is too small.
1.71 + * The ret5urn code reports
1.72 + *
1.73 + **/
1.74 +TInt RWsDebugSession::DebugInfo(TWsDebugInfoFunc aFunction, TInt aParam, TDes8& aHostBuffer,const void*&aReturnedObject,TInt aObjectSize)const
1.75 + {
1.76 + aHostBuffer.SetMax();
1.77 + TInt reqSize=DebugInfo(aFunction,aHostBuffer,aParam);
1.78 + aReturnedObject=NULL;
1.79 + if (reqSize<0)
1.80 + {
1.81 + return reqSize; //Error code is transmitted unmolested
1.82 + }
1.83 + if (reqSize==0) //Size 0 is transformed to max
1.84 + reqSize=aHostBuffer.MaxLength();
1.85 + if ((reqSize%aObjectSize)!=0)
1.86 + { //Size not multiple of object --> error
1.87 + return KErrCorrupt;
1.88 + }
1.89 + if (reqSize<=aHostBuffer.MaxLength())
1.90 + { //Pointer is only set if data fits buffer
1.91 + aReturnedObject=(const void*)aHostBuffer.Ptr();
1.92 + }
1.93 + reqSize/=aObjectSize; //Return the exact number of objects filled
1.94 + return reqSize;
1.95 + }
1.96 +/**
1.97 + * Stream the reply data via the buffer associated with the region.
1.98 + * Some protected accessor optimisation used to manage the reported size of the region after streaming.
1.99 + *
1.100 + **/
1.101 +TInt RWsDebugSession::DebugInfo(TWsDebugInfoFunc aFunction, TInt aParam, TRegion& aPreAllocatedReturnedRegion)const
1.102 + {
1.103 + //Attempt to fit the received data in the preexisting region buffer...
1.104 + class XRegion:public TRegion
1.105 + {
1.106 + public:
1.107 + using TRegion::AppendRect;
1.108 + // using TRegion::SetListSize;
1.109 + using TRegion::RectangleListW;
1.110 + TInt MaxSize()
1.111 + { return iAllocedRects; }
1.112 + void SetListSize(TInt aNewSize) //DANGER no error checking!!!
1.113 + { iCount=aNewSize; }
1.114 + }& preAllocatedReturnedRegion=(XRegion&)aPreAllocatedReturnedRegion;
1.115 + typedef TRect TElt;
1.116 + TInt reqSize=preAllocatedReturnedRegion.MaxSize();
1.117 + const TElt* elements=preAllocatedReturnedRegion.RectangleListW();
1.118 + TInt lenBytes=reqSize*sizeof(TElt);
1.119 + TPtr8 pBuff((TUint8*)elements,lenBytes,lenBytes);
1.120 + reqSize=DebugInfo(aFunction,aParam,pBuff,elements);
1.121 +
1.122 + if (elements)
1.123 + {
1.124 + if (reqSize==0)
1.125 + {
1.126 + reqSize=preAllocatedReturnedRegion.MaxSize();
1.127 + }
1.128 + preAllocatedReturnedRegion.SetListSize(reqSize);
1.129 + return reqSize;
1.130 + }
1.131 + //If data does not fit in preexisting buffer
1.132 + //Use a temp array instead
1.133 + //Still try to block copy into the existing capacity
1.134 + //I think this use of region copy is more efficient than appending,
1.135 + //and definitely better than unioning the elements.
1.136 + if (reqSize>=0)
1.137 + {
1.138 + TInt breakLoop=10;
1.139 + do {
1.140 + TElt* tempbuff=new TElt[reqSize];
1.141 + if (tempbuff==NULL)
1.142 + {
1.143 + reqSize=KErrNoMemory;
1.144 + break;
1.145 + }
1.146 + elements=tempbuff;
1.147 + TInt lenBytes=reqSize*sizeof(TElt);
1.148 + TPtr8 pBuff((TUint8*)elements,lenBytes,lenBytes);
1.149 + TInt reqSize2=DebugInfo(aFunction,aParam,pBuff,elements);
1.150 + if (reqSize2!=0)
1.151 + reqSize=reqSize2;
1.152 + if (elements)
1.153 + {
1.154 + RRegion r(reqSize,tempbuff); //note this region does not own its memory so should not be closed!
1.155 + aPreAllocatedReturnedRegion.Copy(r);
1.156 + if (aPreAllocatedReturnedRegion.CheckError())
1.157 + reqSize=KErrNoMemory;
1.158 + }
1.159 + delete[] tempbuff;
1.160 + }while (reqSize>0 && elements==NULL && --breakLoop);
1.161 + }
1.162 + if (reqSize>=0 && elements==NULL)
1.163 + {
1.164 + preAllocatedReturnedRegion.ForceError();
1.165 + reqSize=KErrTimedOut;
1.166 + }
1.167 + if (reqSize<0)
1.168 + {
1.169 + if (reqSize==KErrCancel)
1.170 + {
1.171 + preAllocatedReturnedRegion.Clear();
1.172 + }
1.173 + else
1.174 + {
1.175 + preAllocatedReturnedRegion.ForceError();
1.176 + }
1.177 +
1.178 + }
1.179 + return reqSize;
1.180 + }