persistentstorage/centralrepository/cenrepsrv/srvsess.cpp
changeset 0 08ec8eefde2f
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     1 // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     2 // All rights reserved.
       
     3 // This component and the accompanying materials are made available
       
     4 // under the terms of "Eclipse Public License v1.0"
       
     5 // which accompanies this distribution, and is available
       
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     7 //
       
     8 // Initial Contributors:
       
     9 // Nokia Corporation - initial contribution.
       
    10 //
       
    11 // Contributors:
       
    12 //
       
    13 // Description:
       
    14 //
       
    15 
       
    16 #include "panic.h"
       
    17 #include "srvreqs.h"
       
    18 #include "sessmgr.h"
       
    19 #include "cachemgr.h"
       
    20 #include "srvsubsess.h"
       
    21 #include "srvsess.h"
       
    22 
       
    23 CServerSession::~CServerSession()
       
    24 	{
       
    25 	// Delete the subsession index.
       
    26 	delete iSubSessionIx;
       
    27 	
       
    28 	//Delete the subsession container via the CObjectConIx's remove function  
       
    29 	((CSessionManager*)Server())->RemoveContainer(iContainer);
       
    30 	}
       
    31 
       
    32 //Called by client/server framework after session has been successfully created.
       
    33 //In effect, a second-phase constructor.
       
    34 //Creates the object index and the object container for this session.
       
    35 void CServerSession::CreateL()
       
    36 	{
       
    37 	// Create new object index
       
    38 	iSubSessionIx = CObjectIx::NewL();
       
    39 	
       
    40 	// Initialize the object container
       
    41 	// using the object container index in the server.
       
    42 	iContainer = ((CSessionManager*)Server())->NewContainerL();
       
    43 	}
       
    44 
       
    45 //helper method to resolve and verify subsession using RMessage and subsession handle
       
    46 CServerSubSession* CServerSession::SubSessionFromHandle(const RMessage2& aMessage, TInt aHandle)
       
    47 	{
       
    48 	CServerSubSession* subSession = (CServerSubSession*)iSubSessionIx->At(aHandle);
       
    49 	if (subSession == NULL)
       
    50 	    {
       
    51 		PanicClient(EBadSubsessionHandle, aMessage);	    
       
    52 	    }
       
    53 	    
       
    54 	return subSession;
       
    55 	}
       
    56 
       
    57 // if ServiceL Leaves, execution resumes in this method.
       
    58 // this allows us to panic clients using bad descriptors, to deal with OOM conditions
       
    59 // and to fail transactions with the correct reason: OOM etc.
       
    60 void CServerSession::ServiceError(const RMessage2 &aMessage, TInt aError)
       
    61 	{
       
    62 	TServerRequest fn = static_cast<TServerRequest>(aMessage.Function());
       
    63 
       
    64 	// If we have failed during initialisation the subsession is no longer available.
       
    65 	// Perform additional cleanup by removing the subsession's handle from the server's 
       
    66 	// subsession index. 
       
    67 	if (fn == EInitialise)
       
    68 		{
       
    69 		// Retrieve handle
       
    70 		TPckgBuf<TInt> handlePckg;
       
    71 		TRAPD(res,aMessage.ReadL(3,handlePckg));
       
    72 		 
       
    73 		if (res == KErrNone)
       
    74 		 	{
       
    75 		 	TInt subSessionHandle = handlePckg();
       
    76 			iSubSessionIx->Remove(subSessionHandle);
       
    77 		 	}
       
    78 		#ifdef _DEBUG
       
    79 			else
       
    80 				{
       
    81 				RDebug::Print(_L("CServerSession::ServiceError - Can't remove subsession handle; aError = %d; res = %d"), aError, res); 
       
    82 				}   	
       
    83 		#endif 	 
       
    84 		}
       
    85 	
       
    86 	//under following conditions the subsession handles the error
       
    87 	if(fn > EInitialise && fn < ELastInTable)
       
    88 		{
       
    89 		CServerSubSession* subSession = SubSessionFromHandle(aMessage, aMessage.Int3());
       
    90 		if(subSession)
       
    91 			{
       
    92 			subSession->ServiceError(aError);   
       
    93 			}
       
    94 		#ifdef _DEBUG
       
    95 			else
       
    96 				{
       
    97 				RDebug::Print(_L("CServerSession::ServiceError - bad subsession handle. aError = %d"), aError); 
       
    98 				}   	
       
    99 		#endif  
       
   100 		}
       
   101 #ifdef SYMBIAN_CENTREP_SUPPORT_MULTIROFS		
       
   102 	//for multi ROFS instead of leaving we panic the client instead
       
   103 	switch (aError)
       
   104 		{
       
   105 		case KErrMultiRofsOldCreUsed:
       
   106 			PanicClient(EMultiRofsPanicOldCre,aMessage);
       
   107 			return;
       
   108 		case KErrMultiRofsGlobalOverride:
       
   109 			PanicClient(EMultiRofsPanicGlobalOverride,aMessage);
       
   110 			return;
       
   111 		case KErrMultiRofsTypeOverride:
       
   112 			PanicClient(EMultiRofsPanicTypeOveride,aMessage);
       
   113 			return;
       
   114 		case KErrMultiRofsIllegalRofs:
       
   115 			PanicClient(EMultiRofsPanicIllegalRofs,aMessage);
       
   116 			return;				
       
   117 		}
       
   118 #endif				
       
   119 		
       
   120 	CSession2::ServiceError(aMessage, aError);
       
   121 	}
       
   122 
       
   123 void CServerSession::ServiceL(const RMessage2& aMessage)
       
   124 	{
       
   125 	TServerRequest fn = static_cast<TServerRequest>(aMessage.Function());
       
   126 	
       
   127 #if defined(__CENTREP_SERVER_PERFTEST__) || defined(__CENTREP_SERVER_MEMTEST__) || defined(__CENTREP_SERVER_CACHETEST__)
       
   128 	if (fn == EGetSetParameters)
       
   129 		{
       
   130 		TInt r = GetSetParameters(aMessage);
       
   131 		aMessage.Complete(r);
       
   132 		return;
       
   133 		}
       
   134 #endif
       
   135 
       
   136 	if(fn > ELastInTable)
       
   137 		{
       
   138 		PanicClient(EBadMessageNumber, aMessage);
       
   139 		}
       
   140 	
       
   141 	CServerSubSession* subSession = NULL;
       
   142 
       
   143 #if defined (SYMBIAN_CENTREP_SUPPORT_MULTIROFS) && defined(CENTREP_TRACE)
       
   144 	TUint32 startTick=0;
       
   145 	TUid repUid;
       
   146 	startTick=User::FastCounter();
       
   147 #endif
       
   148 	PERF_TEST_EVENT_START(subSession, aMessage);
       
   149 
       
   150 	if(fn == EInitialise)
       
   151 		{
       
   152 		//create subsession
       
   153 		subSession = NewSubSessionL(aMessage);
       
   154 #if defined (SYMBIAN_CENTREP_SUPPORT_MULTIROFS) && defined(CENTREP_TRACE)		
       
   155 		repUid=TUid::Uid(aMessage.Int0());
       
   156 		subSession->iRepositoryUid=repUid;
       
   157 #endif		
       
   158 		}
       
   159 	else
       
   160 		{
       
   161 		subSession = SubSessionFromHandle(aMessage, aMessage.Int3());
       
   162 #if defined (SYMBIAN_CENTREP_SUPPORT_MULTIROFS) && defined(CENTREP_TRACE)
       
   163 		repUid=subSession->iRepositoryUid;
       
   164 #endif		
       
   165 		}
       
   166 
       
   167 	if(subSession)
       
   168 		{
       
   169 		
       
   170 		TInt r = KErrNone;
       
   171 		
       
   172 		if(fn == EClose)
       
   173 			{
       
   174 			//delete subsession	
       
   175 			DeleteSubSession(aMessage.Int3());
       
   176 			}
       
   177 		else
       
   178 			{
       
   179 			//ask subsession to handle the message
       
   180 			r = subSession->ServiceL(aMessage);
       
   181 			}
       
   182 
       
   183 		PERF_TEST_EVENT_END(subSession, aMessage);
       
   184 	
       
   185 #if defined (SYMBIAN_CENTREP_SUPPORT_MULTIROFS) && defined(CENTREP_TRACE)
       
   186 		TUint32 endTick=User::FastCounter();
       
   187 		RDebug::Print(_L("[CENTREP],TimeStamp=,%d,Repository=,%x,Function=,%d,TickCount=,%d"),startTick,repUid.iUid,fn,endTick-startTick);
       
   188 #endif
       
   189 		if (r != CServerSubSession::KDontCompleteMessage)
       
   190 			{
       
   191 			aMessage.Complete(r);
       
   192 			}
       
   193 		}
       
   194 	//If (subsession == NULL) we don't need to complete the message, as the message is completed already when the client panicked
       
   195 	#ifdef _DEBUG   
       
   196 		else
       
   197 			{
       
   198 			RDebug::Print(_L("CServerSession::ServiceL - bad subsession handle. TServerRequest = %d"), fn); 
       
   199 			}
       
   200 	#endif
       
   201 	}
       
   202 
       
   203 //Creates a new subsession object, and writes its handle to the message.
       
   204 //A subsession object is the server side "partner" to the client side subsession.
       
   205 //On return last parameter of aMessage is filled with the handle of the subsession
       
   206 //and handle is also returned
       
   207 CServerSubSession* CServerSession::NewSubSessionL(const RMessage2& aMessage)
       
   208 	{
       
   209 	//create a new subsession
       
   210 	CServerSubSession* subSession = new (ELeave) CServerSubSession(this);
       
   211 	CleanupStack::PushL(subSession);
       
   212 	
       
   213 	//add the subsession object to this session's object container to generate a unique ID
       
   214 	iContainer->AddL(subSession);
       
   215 	CleanupStack::Pop(subSession);
       
   216 	
       
   217 	//add the object to the subsessions index, this returns a unique handle so that we can
       
   218 	//refer to the object later
       
   219 	TInt handle = iSubSessionIx->AddL(subSession);
       
   220 	
       
   221 	//write the handle to the client's message
       
   222 	TPckgBuf<TInt> handlePckg(handle);
       
   223 	TRAPD(res,aMessage.WriteL(3,handlePckg));
       
   224 	if (res!=KErrNone)
       
   225 		{
       
   226 		iSubSessionIx->Remove(handle);
       
   227 		PanicClient(EBadSubsessionHandle, aMessage);
       
   228 		subSession = NULL;
       
   229 		}
       
   230 
       
   231 	return subSession;
       
   232 	}
       
   233 	
       
   234 //Deletes a subsession object through its handle.
       
   235 void CServerSession::DeleteSubSession(TInt aHandle)
       
   236 	{
       
   237 	iSubSessionIx->Remove(aHandle);
       
   238 	}
       
   239 	
       
   240 inline CSessionManager* CServerSession::Server()
       
   241 	{
       
   242 	return static_cast<CSessionManager*>(const_cast<CServer2*>(CSession2::Server()));
       
   243 	}
       
   244 
       
   245 #if defined(__CENTREP_SERVER_PERFTEST__) || defined (__CENTREP_SERVER_MEMTEST__) || defined(__CENTREP_SERVER_CACHETEST__)
       
   246 // GetSetParameters
       
   247 // The function code EGetSetParameters is a generic msg reserved
       
   248 // for testing purpose. Int0 specifies the function to perform.
       
   249 TInt CServerSession::GetSetParameters(const TClientRequest& aMessage)
       
   250 	{
       
   251 	TServerGetSetParametersSubCmd cmd = static_cast<TServerGetSetParametersSubCmd>(aMessage.Int0());
       
   252 
       
   253 #ifdef __CENTREP_SERVER_PERFTEST__
       
   254 	if (cmd == EGetPerfResults)
       
   255 		{
       
   256 		TInt desSize = aMessage.GetDesMaxLength(1);
       
   257 		TInt numVals = desSize / sizeof(TUint32);
       
   258 		if (numVals < KCentRepPerfTestArraySize)
       
   259 			{
       
   260 			return KErrOverflow;
       
   261 			}
       
   262 		TPtrC8 p(reinterpret_cast<const TUint8*>(TServerResources::iPerfTestMgr.Entries()),
       
   263 				   KCentRepPerfTestArraySize * sizeof(TUint32));
       
   264 		TInt ret = aMessage.Write(1, p);
       
   265 		if (ret == KErrNone)
       
   266 			{
       
   267 			TUint lastCompleteAccess = TServerResources::iPerfTestMgr.LastCompleteAccess();
       
   268 			TPckg<TUint> p2(lastCompleteAccess);
       
   269 			ret = aMessage.Write(2, p2);
       
   270 			}
       
   271 		return ret;
       
   272 		}
       
   273 	else if (cmd == ERestartPerfTests)
       
   274 		{
       
   275 		TServerResources::iPerfTestMgr.Reset();
       
   276 		return KErrNone;
       
   277 		}
       
   278 	else if (cmd == EStopPerfTests)
       
   279 		{
       
   280 		TServerResources::iPerfTestMgr.Stop();
       
   281 		return KErrNone;
       
   282 		}
       
   283 #endif // __CENTREP_SERVER_PERFTEST__
       
   284 
       
   285 #ifdef __CENTREP_SERVER_MEMTEST__
       
   286 	if(cmd == ERestartMemTests)
       
   287 		{
       
   288 		TServerResources::StartRecordTimerResult();
       
   289 		return KErrNone;
       
   290 		}
       
   291 	else if(cmd == ESingleMemTest)
       
   292 		{
       
   293 		RECORD_HEAP_SIZE(EMemLcnOnDemand, aMessage.Int1());
       
   294 		return KErrNone;
       
   295 		}
       
   296 	else if(cmd == EGetMemResults)
       
   297 		{
       
   298 		TInt count = TServerResources::iMemTestDataCount;
       
   299 		TPckg<TInt> pCount(count);
       
   300 		
       
   301 		TInt err = aMessage.Write(1, pCount);
       
   302 		if(err == KErrNone && count > 0)
       
   303 			{
       
   304 			TPtrC8 pBuf(reinterpret_cast<TUint8*>(TServerResources::iMemTestData), (TServerResources::iMemTestDataCount)*sizeof(TInt32));
       
   305 			err = aMessage.Write(2, pBuf);
       
   306 			}
       
   307 		// Stop recording results
       
   308 		TServerResources::StopRecordTimerResult();
       
   309 		return err;
       
   310 		}
       
   311 #endif // __CENTREP_SERVER_MEMTEST__
       
   312 
       
   313 #ifdef __CENTREP_SERVER_CACHETEST__
       
   314 	if (cmd == EEnableCache)
       
   315 		{
       
   316 		// First parameter is Timer Interval, second is cache size
       
   317 		TServerResources::iCacheManager->EnableCache(aMessage.Int1(), aMessage.Int2());
       
   318 		return KErrNone;
       
   319 		}
       
   320 	else if (cmd == EDisableCache)
       
   321 		{
       
   322 		TServerResources::iCacheManager->DisableCache(ETrue);
       
   323 		return KErrNone;
       
   324 		}
       
   325 #endif  // __CENTREP_SERVER_CACHETEST__
       
   326 
       
   327 	return KErrNotSupported;
       
   328 	}
       
   329 #endif // __CENTREP_SERVER_PERFTEST__ || __CENTREP_SERVER_MEMTEST__ || __CENTREP_SERVER_CACHETEST__
       
   330