kerneltest/e32test/thread/smpsafe.cpp
author John Imhofe
Mon, 19 Oct 2009 15:55:17 +0100
changeset 0 a41df078684a
child 6 0173bcd7697c
permissions -rw-r--r--
Convert Kernelhwsrv package from SFL to EPL kernel\eka\compsupp is subject to the ARM EABI LICENSE userlibandfileserver\fatfilenameconversionplugins\unicodeTables is subject to the Unicode license kernel\eka\kernel\zlib is subject to the zlib license
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// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// e32test\thread\smpsafe.cpp
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// 
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//
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#include <e32std.h>
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#include <e32std_private.h>
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#include <e32atomics.h>
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IMPORT_C void DoNothingA();
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IMPORT_C void DoNothingB();
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IMPORT_C void DoNothingC();
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IMPORT_C void DoNothingD();
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IMPORT_C void DoNothingE();
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#ifdef MAKE_DLL
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#ifdef PROVIDE_A
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EXPORT_C void DoNothingA() {}
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#endif
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#ifdef PROVIDE_B
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EXPORT_C void DoNothingB() { DoNothingA(); }
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#endif
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#ifdef PROVIDE_C
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EXPORT_C void DoNothingC() { DoNothingD(); DoNothingE(); }
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#endif
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#ifdef PROVIDE_D
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EXPORT_C void DoNothingD() { DoNothingC(); }
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#endif
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#ifdef PROVIDE_E
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EXPORT_C void DoNothingE() { DoNothingC(); }
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#endif
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#else // !MAKE_DLL
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TInt Affinity;
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TInt AffinitySlave(TAny*)
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	{
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	for (;;)
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		{
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		__e32_atomic_store_rel32(&Affinity, 0); // we can't be locked if this runs
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		User::AfterHighRes(1);
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		}
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	}
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TInt CheckAffinity()
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	{
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	__e32_atomic_store_rel32(&Affinity, 1); // assume we are locked to a single cpu
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	RThread t;
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	TInt r = t.Create(_L("AffinitySlave"), AffinitySlave, KDefaultStackSize, NULL, NULL);
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	if (r != KErrNone)
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		return r;
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	TRequestStatus s;
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	t.Logon(s);
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	t.SetPriority(EPriorityLess);
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	t.Resume();
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	TUint32 target = User::NTickCount() + 10;
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	while (User::NTickCount() < target) {}
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	r = __e32_atomic_load_acq32(&Affinity);
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	t.Kill(0);
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	User::WaitForRequest(s);
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	t.Close();
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	return r;
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	}
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#ifndef OMIT_MAIN
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GLDEF_C TInt E32Main()
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	{
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#ifdef USE_A
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	DoNothingA();
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#endif
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#ifdef USE_B
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	DoNothingB();
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#endif
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	return CheckAffinity();
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	}
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#endif // OMIT_MAIN
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#endif