--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/kerneltest/e32test/bench/t_membm.cpp Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,227 @@
+// Copyright (c) 1996-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the License "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:
+// e32test\bench\t_membm.cpp
+//
+//
+
+#include <e32std.h>
+#include <e32std_private.h>
+#include <e32base.h>
+#include <e32base_private.h>
+#include <e32test.h>
+#include <e32svr.h>
+
+#define ALIGN_UP(x, y) (TInt8*)(_ALIGN_UP((TInt)(x), (y)))
+#define ALIGN_DOWN(x, y) (TInt8*)(_ALIGN_DOWN((TInt)(x), (y)))
+
+const TInt KHeapSize=720*1024;
+const TInt KAverageOverInMilliseconds=500;
+const TInt Len64K = 64*1024;
+
+volatile TInt count;
+volatile TInt iters;
+
+TInt8* trg;
+TInt8* src;
+TInt8* dummy;
+TInt8 trgoffset;
+TInt8 srcoffset;
+TInt len=64*1024;
+TInt64 result;
+
+RTest test(_L("T_MEMBM"));
+
+GLREF_C TInt MemBaseline(TAny*);
+GLREF_C TInt MemCopy(TAny*);
+GLREF_C TInt MemMove(TAny*);
+GLREF_C TInt MemFill(TAny*);
+GLREF_C TInt MemSwap(TAny*);
+GLREF_C TInt WordMove(TAny*);
+GLREF_C TInt MemCopyUncached(TAny*);
+GLREF_C TInt WordMoveUncached(TAny*);
+GLREF_C TInt MemFillUncached(TAny*);
+GLREF_C TInt PurgeCache();
+
+TInt nextLen(TInt aTestLength)
+ {
+ if (len == Len64K)
+ return 0;
+ if (!aTestLength)
+ return Len64K;
+
+ TInt inc = aTestLength;
+ for (TInt i = len >> 5 ; i ; i >>= 1)
+ inc <<= 1;
+
+ return len + inc;
+ }
+
+/**
+ * Run benchmarks on the supplied function.
+ *
+ * @param aFunction The function to benchmark
+ * @param aTestBackwards Run copy tests with overlapping areas to test backwards copy
+ * @param aTestSrcAlign Run tests for source alignments 0 - 31
+ * @param aTestDestAlign Run tests for destination alignments 0 - 31
+ * @param aTestLength If non-zero, run tests for different lengths starting at aTestLength
+ */
+TInt64 runTest(TThreadFunction aFunction,const TDesC& aTitle, TBool aTestBackwards, TBool aTestSrcAlign, TBool aTestDestAlign, TInt aTestLength)
+ {
+ TInt8* buffer = (TInt8*)User::Alloc(640 * 1024 + 32);
+ test(buffer != 0);
+
+ test(!(aTestLength && aTestBackwards)); // not supported
+
+ TBool goingforward=ETrue;
+
+ FOREVER
+ {
+ if (aTestLength)
+ test.Printf(_L("Running length experiment on %S. Results follow:\n"), &aTitle);
+
+ len = 0;
+ while(len = nextLen(aTestLength), len)
+ {
+ src = ALIGN_UP(buffer, 32);
+ if (goingforward)
+ trg = src + 512 * 1024; // blow half a meg
+ else
+ trg = ALIGN_DOWN(src + len - 1, 32); // ensure overlapping, doesn't work for length < 32
+
+ if (aTestLength)
+ test.Printf(_L("%d, "), len);
+ else
+ test.Printf(_L("Test array bases trg=0x%08x, src=0x%08x. Running experiment on %S. Results follow:\n"), trg, src, &aTitle);
+
+ const TInt xsquare = aTestDestAlign ? 32 : 1;
+ const TInt ysquare = aTestSrcAlign ? 32 : 1;
+
+ for (srcoffset = 0 ; srcoffset < ysquare ; srcoffset++)
+ {
+ for (trgoffset = 0 ; trgoffset < xsquare ; trgoffset++)
+ {
+ RThread thread;
+ TInt r=thread.Create(aTitle,aFunction,KDefaultStackSize,KHeapSize,KHeapSize,NULL);
+ if(r!=KErrNone)
+ {
+ test.Printf(_L("Failed to create thread with error %d\n"),r);
+ return(r);
+ }
+ thread.SetPriority(EPriorityLess);
+ thread.Resume();
+ User::After(50000); // 50 msec is more than enough in EKA2
+ count=0;
+ User::After(5000); // even if the second reset fails, max inaccuracy is 5000 usecs
+ count=0; // try and reduce the probability of failing to reset
+ User::After(KAverageOverInMilliseconds*1000);
+ result=count;
+ thread.Kill(0);
+ CLOSE_AND_WAIT(thread);
+ PurgeCache();
+
+ result *= 1000;
+ result /= KAverageOverInMilliseconds;
+
+ TInt s = I64INT(result);
+ test.Printf(_L("%d, "),s);
+ }
+ test.Printf(_L("\n"));
+ }
+ }
+
+ if (aTestBackwards && goingforward)
+ goingforward = EFalse;
+ else
+ break;
+ }
+
+ User::Free(buffer);
+
+ return(result);
+ }
+
+enum TTestType
+ {
+ ENormalTests,
+ EFullTests,
+ ELengthTests,
+ };
+
+// Return whether we should run the full alignment benchmarks
+TTestType ParseCommandLine()
+ {
+ TBuf<32> args;
+ User::CommandLine(args);
+
+ if (args == _L("-f"))
+ return EFullTests;
+ else if (args == _L("-l"))
+ return ELengthTests;
+ else if (args != KNullDesC)
+ {
+ test.Printf(_L("usage: t_membm [OPTIONS]\n"));
+ test.Printf(_L(" -f Run full alignment benchmarks\n"));
+ test.Printf(_L(" -l Run memcpy length benchmarks\n"));
+ test(EFalse);
+ }
+
+ return ENormalTests;
+ }
+
+TInt E32Main()
+//
+// Benchmark for Mem functions
+//
+ {
+
+ test.Title();
+ test.Start(_L("Benchmarks for Mem functions"));
+
+ TTestType testType = ParseCommandLine();
+
+ switch (testType)
+ {
+ case ENormalTests:
+ case EFullTests:
+ {
+ TBool srcAlign = testType == EFullTests;
+
+ if (srcAlign)
+ test.Printf(_L("Running full alignment benchmarks (may take a long time)\n"));
+ else
+ test.Printf(_L("Not testing source alignment (run with -f if you want this)\n"));
+
+ runTest(MemBaseline, _L("Processor baseline"), EFalse, EFalse, EFalse, 0);
+ runTest(MemFill, _L("Memory fill"), EFalse, EFalse, ETrue, 0);
+ runTest(MemCopy, _L("Memory copy"), ETrue, srcAlign, ETrue, 0);
+ runTest(MemSwap, _L("Memory swap"), ETrue, srcAlign, ETrue, 0);
+ }
+ break;
+ case ELengthTests:
+ test.Printf(_L("Running length benchmarks (may take a long time)\n"));
+ runTest(MemFill, _L("Fill length cached"), EFalse, EFalse, EFalse, 1);
+ runTest(MemFillUncached, _L("Fill length uncached"), EFalse, EFalse, EFalse, 1);
+ runTest(MemCopy, _L("Copy length cached"), EFalse, EFalse, EFalse, 1);
+ runTest(MemCopyUncached, _L("Copy length uncached"), EFalse, EFalse, EFalse, 1);
+ runTest(WordMove, _L("Word move length cached"), EFalse, EFalse, EFalse, 4);
+ runTest(WordMoveUncached,_L("Word move length uncached"), EFalse, EFalse, EFalse, 4);
+ break;
+ default:
+ test(EFalse);
+ break;
+ }
+
+ test.End();
+ return(KErrNone);
+ }