sl@0: // Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of the License "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // e32test\realtime\t_latncy.cpp
sl@0: // 
sl@0: //
sl@0: 
sl@0: #include <e32test.h>
sl@0: #include <e32svr.h>
sl@0: 
sl@0: LOCAL_D RTest test(_L("Latency"));
sl@0: LOCAL_D CConsoleBase* console=NULL;
sl@0: 
sl@0: struct SLatencyValues
sl@0: 	{
sl@0: 	TUint iAddress;
sl@0: 	TUint iLatencies;
sl@0: 	TUint iThreadIds;
sl@0: 	TUint iSwi;
sl@0: 	};
sl@0: 
sl@0: struct SMaxLatencyValues
sl@0: 	{
sl@0: 	TInt iMaxIntLatency;
sl@0: 	TUint iMaxIntLatencyRetAddr;
sl@0: 	TInt iMaxThreadLatency;
sl@0: 	TUint iMaxThreadLatencyRetAddr;
sl@0: 	};
sl@0: 
sl@0: extern void GetLatencyValues(TInt, TInt&, SLatencyValues*);
sl@0: 
sl@0: inline TInt* NullTIntPtr()	// to allow generation of a NULL reference without the compiler complaining
sl@0: 	{ return 0; }
sl@0: 
sl@0: void GetMaxLatencyValues(SMaxLatencyValues& a)
sl@0: 	{
sl@0: 	GetLatencyValues(2,*NullTIntPtr(),(SLatencyValues*)&a);
sl@0: 	}
sl@0: 
sl@0: LOCAL_C void DumpValues(TInt aCount, SLatencyValues* aValues)
sl@0: 	{
sl@0: 	TInt i;
sl@0: 	for (i=0; i<aCount; i++)
sl@0: 		{
sl@0: 		SLatencyValues v=aValues[i];
sl@0: 		TInt addr=v.iAddress;
sl@0: 		TInt iticks=v.iLatencies>>16;
sl@0: 		TInt tticks=v.iLatencies & 0xffff;
sl@0: 		TInt ius=(iticks*125+124)>>6;
sl@0: 		TInt tus=(tticks*125+124)>>6;
sl@0: //		TInt oldtid=v.iThreadIds & 0xffff;
sl@0: //		TInt newtid=v.iThreadIds >> 16;
sl@0: 		TInt swi=v.iSwi;
sl@0: 		RDebug::Print(_L("%08x %4d %4d %08x %08x"),addr,ius,tus,v.iThreadIds,swi);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: LOCAL_C void DisplayMaxLatencyValues()
sl@0: 	{
sl@0: 	SMaxLatencyValues v;
sl@0: 	GetMaxLatencyValues(v);
sl@0: 	TInt ius=(v.iMaxIntLatency*125+124)>>6;
sl@0: 	TInt tus=(v.iMaxThreadLatency*125+124)>>6;
sl@0: 	console->Printf(_L("Interrupt: %4dus return address %08x\n"),ius,v.iMaxIntLatencyRetAddr);
sl@0: 	console->Printf(_L("Thread:    %4dus return address %08x\n"),tus,v.iMaxThreadLatencyRetAddr);
sl@0: 	}
sl@0: 
sl@0: GLDEF_C TInt E32Main()
sl@0: 	{
sl@0: 	TInt c;
sl@0: 	SLatencyValues* pV=new SLatencyValues[28672];
sl@0: 
sl@0: 	test.Title();
sl@0: 	console=test.Console();
sl@0: 	if (!pV)
sl@0: 		User::Panic(_L("OOM"),0);
sl@0: 
sl@0: 	TBool exit=EFalse;
sl@0: 	while(!exit)
sl@0: 		{
sl@0: 		TKeyCode k=test.Getch();
sl@0: 		switch(k)
sl@0: 			{
sl@0: 			case '0':
sl@0: 				console->Printf(_L("Getting Latency Values\n"));
sl@0: 				GetLatencyValues(0,c,pV);
sl@0: 				DumpValues(c,pV);
sl@0: 				break;
sl@0: 			case '1':
sl@0: 				console->Printf(_L("Clearing Latency Values\n"));
sl@0: 				GetLatencyValues(1,c,pV);
sl@0: 				break;
sl@0: 			case '2':
sl@0: 				DisplayMaxLatencyValues();
sl@0: 				break;
sl@0: 			case 'x':
sl@0: 			case 'X':
sl@0: 				exit=ETrue;
sl@0: 				break;
sl@0: 			default:
sl@0: 				break;
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	test.End();
sl@0: 	return 0;
sl@0: 	}
sl@0: