diff -r 000000000000 -r bde4ae8d615e os/kernelhwsrv/kerneltest/e32test/prime/t_mutex.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/kernelhwsrv/kerneltest/e32test/prime/t_mutex.cpp	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,139 @@
+// Copyright (c) 1995-2009 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\prime\t_mutex.cpp
+// Test mutexes
+// 
+//
+
+#include <e32test.h>
+#include "u32std.h"
+#include "../misc/prbs.h"
+
+RTest test(_L("T_MUTEX"));
+
+TInt Count1=0;
+TInt Count2=0;
+TInt TId=-1;
+RMutex Mutex;
+
+void BusyWait(TInt aMicroseconds)
+	{
+	TTime begin;
+	begin.HomeTime();
+	FOREVER
+		{
+		TTime now;
+		now.HomeTime();
+		TTimeIntervalMicroSeconds iv=now.MicroSecondsFrom(begin);
+		if (iv.Int64()>=TInt64(aMicroseconds))
+			return;
+		}
+	}
+
+TInt ThreadFunction(TAny* aPtr)
+	{
+	TInt id=(TInt)aPtr;
+	FOREVER
+		{
+		Mutex.Wait();
+		TId=id;
+		if (Count1!=Count2)
+			{
+			RProcess me;
+			me.Panic(_L("FAIL!"),0);
+			}
+		++Count1;
+		BusyWait(50000);
+		++Count2;
+		TId=-1;
+		Mutex.Signal();
+		}
+	}
+
+void CreateThread(RThread& t, TInt aId)
+	{
+	TInt r=t.Create(KNullDesC,ThreadFunction,0x2000,NULL,(TAny*)aId);
+	test(r==KErrNone);
+	t.Resume();
+	}
+
+
+GLDEF_C TInt E32Main()
+	{
+	test.Title();
+	test.Start(_L("Create mutex"));
+	TInt r=Mutex.CreateLocal();
+	test(r==KErrNone);
+
+	test.Next(_L("Create threads"));
+	RThread().SetPriority(EPriorityMuchMore);
+	RThread t[4];
+	TInt i;
+	for (i=0; i<4; ++i)
+		CreateThread(t[i],i);
+
+	TUint seed[2];
+	seed[0]=0xb17217f8;
+	seed[1]=0;
+
+	FOREVER
+		{
+		TUint ms=Random(seed);
+		TUint action=(ms>>30);
+		i=(ms>>28)&3;
+		ms&=63;
+		ms+=15;
+		User::AfterHighRes(ms*1000);
+		switch(action)
+			{
+			case 0:
+				{
+				t[i].Suspend();
+				break;
+				}
+			case 1:
+				{
+				t[i].Resume();
+				break;
+				}
+			case 2:
+				{
+				TRequestStatus s;
+				t[i].Logon(s);
+				t[i].Kill(0);
+				if (Count1!=Count2)
+					{
+					if (Count1-Count2!=1)
+						{
+						RProcess me;
+						me.Panic(_L("FAIL!"),1);
+						}
+					else if (TId==i)
+						++Count2;
+					}
+				User::AfterHighRes(50000);
+				User::WaitForRequest(s);
+				t[i].Close();
+				CreateThread(t[i],i);
+				break;
+				}
+			case 3:
+				{
+				break;
+				}
+			}
+		}
+
+//	test.End();
+	}