sl@0: // Copyright (c) 1996-2009 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\bench\t_memfnc.cpp
sl@0: // 
sl@0: //
sl@0: 
sl@0: #include <e32std.h>
sl@0: #include <e32std_private.h>
sl@0: #include <e32base.h>
sl@0: #include <e32base_private.h>
sl@0: 
sl@0: const TInt Len64K = 64*1024;
sl@0: 
sl@0: volatile extern TInt count;
sl@0: volatile extern TInt iters;
sl@0: extern TInt8* trg;
sl@0: extern TInt8* src;
sl@0: extern TInt8 trgoffset;
sl@0: extern TInt8 srcoffset;
sl@0: extern TInt len;
sl@0: 
sl@0: GLREF_C TInt PurgeCache()
sl@0: 	{
sl@0:     TInt8* purgetrg;
sl@0:     TInt8* purgesrc;
sl@0: 
sl@0:     purgetrg=(TInt8*)User::Alloc(Len64K);
sl@0:     purgesrc=(TInt8*)User::Alloc(Len64K);
sl@0: 
sl@0: 	Mem::Copy(purgetrg,purgesrc,Len64K);
sl@0: 
sl@0: 	User::Free(purgetrg);
sl@0: 	User::Free(purgesrc);
sl@0: 	return 0;
sl@0: 	}
sl@0: 
sl@0: TInt MemBaseline(TAny*)
sl@0: 	{
sl@0: 	FOREVER
sl@0: 		{		
sl@0: 		for (iters=0; iters<8192; )
sl@0: 			{
sl@0: 			// eight off, unrolled for accuracy
sl@0: 			iters++;
sl@0: 			iters++;
sl@0: 			iters++;
sl@0: 			iters++;
sl@0: 
sl@0: 			iters++;
sl@0: 			iters++;
sl@0: 			iters++;
sl@0: 			iters++;
sl@0: 			}
sl@0: 
sl@0: 		count++;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: TInt MemCopy(TAny*)
sl@0: 	{
sl@0: 	FOREVER
sl@0: 		{
sl@0: 		Mem::Copy(trgoffset+trg,srcoffset+src,len);
sl@0: 		count++;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: TInt MemFill(TAny*)
sl@0: 	{
sl@0: 	FOREVER
sl@0: 		{
sl@0: 		Mem::Fill(trgoffset+trg,len,42);
sl@0: 		count++;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: TInt MemSwap(TAny*)
sl@0: 	{
sl@0: 	FOREVER
sl@0: 		{
sl@0: 		Mem::Swap(trgoffset+trg,srcoffset+src,len);
sl@0: 		count++;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: /// For lengths smaller than the allocated size of 64K.  Pointers are stepped
sl@0: /// though RAM so that we never hit the cache.  Stepping is done backwards to
sl@0: /// foil any automatic preparation for loading of the next cache line.
sl@0: TInt MemCopyUncached(TAny*)
sl@0: 	{
sl@0: 	TUint step = (len + 31) & (~31);	// length rounded up to cache line size
sl@0: 
sl@0: 	TInt8* slimit = src + 2*Len64K - step + srcoffset;
sl@0: 	TInt8* tlimit = trg + 2*Len64K - step + trgoffset;
sl@0: 
sl@0: 	TInt8* s = slimit;
sl@0: 	TInt8* t = tlimit;
sl@0: 	
sl@0: 	FOREVER
sl@0: 		{
sl@0: 		Mem::Copy(t,s,len);
sl@0: 		s -= step;
sl@0: 		t -= step;
sl@0: 		if (s < src)
sl@0: 			{
sl@0: 			s = slimit;
sl@0: 			t = tlimit;
sl@0: 			}
sl@0: 		count++;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: // See comments for MemCopyUncached above
sl@0: TInt MemFillUncached(TAny*)
sl@0: 	{
sl@0: 	TUint step = (len + 31) & (~31);	// length rounded up to cache line size
sl@0: 
sl@0: 	TInt8* tlimit = trg + 2*Len64K - step + trgoffset;
sl@0: 	TInt8* t = tlimit;
sl@0: 	
sl@0: 	FOREVER
sl@0: 		{
sl@0: 		Mem::Fill(t,len,42);
sl@0: 		t -= step;
sl@0: 		if (t < trg)
sl@0: 			t = tlimit;
sl@0: 		count++;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: TInt WordMove(TAny*)
sl@0: 	{
sl@0: 	FOREVER
sl@0: 		{
sl@0: 		wordmove(trgoffset+trg,srcoffset+src,len);
sl@0: 		count++;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: // See comments for MemCopyUncached above
sl@0: TInt WordMoveUncached(TAny*)
sl@0: 	{
sl@0: 	TUint step = (len + 31) & (~31);	// length rounded up to cache line size
sl@0: 
sl@0: 	TInt8* slimit = src + 2*Len64K - step + srcoffset;
sl@0: 	TInt8* tlimit = trg + 2*Len64K - step + trgoffset;
sl@0: 
sl@0: 	TInt8* s = slimit;
sl@0: 	TInt8* t = tlimit;
sl@0: 	
sl@0: 	FOREVER
sl@0: 		{
sl@0: 		wordmove(t,s,len);
sl@0: 		s -= step;
sl@0: 		t -= step;
sl@0: 		if (s < src)
sl@0: 			{
sl@0: 			s = slimit;
sl@0: 			t = tlimit;
sl@0: 			}
sl@0: 		count++;
sl@0: 		}
sl@0: 	}