--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kerneltest/e32test/bench/t_ctxsw3.cpp	Thu Dec 17 09:24:54 2009 +0200
@@ -0,0 +1,113 @@
+// Copyright (c) 1997-2009 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_ctxsw3.cpp
+// Overview:
+// Benchmark the inter-thread context switching. 
+// API Information:
+// RThread, RRSemaphore.
+// Details:
+// - Create a semaphore.
+// - Create a thread (thread1) with a handle to the Semaphore and 
+// priority EPriorityLess. Verify the successful creation.
+// - Create another thread (thread2) with a handle to the Semaphore 
+// and priority EPriorityMuchLess. Verify the successful creation.
+// - thread1 counts the number of times the semaphore count is decremented.
+// - thread2 counts the number of times the semaphore count is incremented.
+// - Display the number of times the semaphore is signalled per second.
+// Platforms/Drives/Compatibility:
+// All.
+// Assumptions/Requirement/Pre-requisites:
+// Failures and causes:
+// Base Port information:
+// 
+//
+
+#include <e32test.h>
+
+RTest test(_L("T_CTXSW3"));
+
+LOCAL_D TInt Count;
+
+LOCAL_D RSemaphore StartSem;
+
+LOCAL_C TInt Thread1(TAny* aSemaphore)
+	{
+	RSemaphore s;
+	s.SetHandle((TInt)aSemaphore);
+	StartSem.Wait();
+	FOREVER
+		{
+		s.Wait();
+		Count++;
+		}
+	}
+
+LOCAL_C TInt Thread2(TAny* aSemaphore)
+	{
+	RSemaphore s;
+	s.SetHandle((TInt)aSemaphore);
+	StartSem.Wait();
+	FOREVER
+		{
+		s.Signal();
+		Count++;
+		}
+	}
+
+const TInt KHeapSize=4096;
+
+GLDEF_C TInt E32Main()
+	{
+	test.Title();
+	test.Start(_L("Timing inter-thread context switches..."));
+
+	TInt r=StartSem.CreateLocal(0);
+	test(r==KErrNone);
+
+	RSemaphore sem;
+	r=sem.CreateLocal(0);
+	test(r==KErrNone);
+	RThread t1,t2;
+	r=t1.Create(_L("Thread1"),Thread1,KDefaultStackSize,KHeapSize,KHeapSize,(TAny*)sem.Handle());
+	test(r==KErrNone);
+	t1.SetPriority(EPriorityLess);
+	r=t2.Create(_L("Thread2"),Thread2,KDefaultStackSize,KHeapSize,KHeapSize,(TAny*)sem.Handle());
+	test(r==KErrNone);
+	t2.SetPriority(EPriorityMuchLess);
+
+	TRequestStatus s1,s2;
+	t1.Logon(s1);
+	t2.Logon(s2);
+	t1.Resume();
+	t2.Resume();
+
+	Count=0;
+	User::After(20000);
+	StartSem.Signal(2);
+	User::After(2000000);
+	TInt count=Count;
+
+	t2.Kill(0);
+	User::WaitForRequest(s2);
+	t1.Kill(0);
+	User::WaitForRequest(s1);
+	t2.Close();
+	t1.Close();
+	sem.Close();
+
+	test.Printf(_L("%d per second\n"),count/2);
+
+	test.End();
+	return 0;
+	}