FCL/sf/os/kernelhwsrv: kerneltest/e32test/thread/smpsafe.cpp@0173bcd7697c (annotated)

0 a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	1	// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	2	// All rights reserved.
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	3	// This component and the accompanying materials are made available
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	4	// under the terms of the License "Eclipse Public License v1.0"
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	5	// which accompanies this distribution, and is available
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	6	// at the URL "http://www.eclipse.org/legal/epl-v10.html".
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	7	//
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	8	// Initial Contributors:
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	9	// Nokia Corporation - initial contribution.
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	10	//
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	11	// Contributors:
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	12	//
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	13	// Description:
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	14	// e32test\thread\smpsafe.cpp
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	15	//
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	16	//
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	17
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	18	#include <e32std.h>
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	19	#include <e32std_private.h>
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	20	#include <e32atomics.h>
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	21
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	22	IMPORT_C void DoNothingA();
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	23	IMPORT_C void DoNothingB();
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	24	IMPORT_C void DoNothingC();
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	25	IMPORT_C void DoNothingD();
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	26	IMPORT_C void DoNothingE();
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	27
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	28	#ifdef MAKE_DLL
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	29
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	30	#ifdef PROVIDE_A
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	31	EXPORT_C void DoNothingA() {}
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	32	#endif
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	33
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	34	#ifdef PROVIDE_B
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	35	EXPORT_C void DoNothingB() { DoNothingA(); }
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	36	#endif
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	37
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	38	#ifdef PROVIDE_C
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	39	EXPORT_C void DoNothingC() { DoNothingD(); DoNothingE(); }
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	40	#endif
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	41
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	42	#ifdef PROVIDE_D
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	43	EXPORT_C void DoNothingD() { DoNothingC(); }
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	44	#endif
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	45
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	46	#ifdef PROVIDE_E
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	47	EXPORT_C void DoNothingE() { DoNothingC(); }
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	48	#endif
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	49
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	50	#else // !MAKE_DLL
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	51
33 0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	52	volatile TInt Affinity;
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	53	RSemaphore Start;
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	54	RSemaphore Stop;
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	55
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	56	const TInt KLoopTries = 100;
0 a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	57
33 0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	58	// This gets run in a low priority thread. Each time around the loop it waits to be told to go,
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	59	// then sets Affinity to 0, then tells the other thread it's done. If we're actually locked to
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	60	// the same processor as the main thread, however, then we won't get to run until the other thread
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	61	// waits for the Stop semaphore, and thus Affinity will not get set to 0 until the other thread
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	62	// checked it already.
0 a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	63	TInt AffinitySlave(TAny*)
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	64	{
33 0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	65	for (TInt i = KLoopTries; i>0; --i)
0 a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	66	{
33 0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	67	Start.Wait();
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	68	Affinity = 0;
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	69	Stop.Signal();
0 a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	70	}
33 0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	71	return KErrNone;
0 a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	72	}
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	73
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	74	TInt CheckAffinity()
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	75	{
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	76	RThread t;
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	77	TInt r = t.Create(_L("AffinitySlave"), AffinitySlave, KDefaultStackSize, NULL, NULL);
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	78	if (r != KErrNone)
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	79	return r;
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	80
33 0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	81	Start.CreateLocal(0);
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	82	Stop.CreateLocal(0);
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	83
0 a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	84	TRequestStatus s;
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	85	t.Logon(s);
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	86	t.SetPriority(EPriorityLess);
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	87	t.Resume();
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	88
33 0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	89	for (TInt i = KLoopTries; i>0; --i)
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	90	{
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	91	Affinity = 1; // assume we are locked to a single cpu
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	92	Start.Signal(); // tell the other thread to run
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	93	TUint32 target = User::NTickCount() + 10;
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	94	while (User::NTickCount() < target)
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	95	{
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	96	// spin, waiting to see if the other thread actually does run
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	97	}
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	98	if (Affinity == 0)
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	99	break;
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	100	Stop.Wait(); // We didn't see it this time, but try again in case of scheduling fluke
0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	101	}
0 a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	102
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	103	t.Kill(0);
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	104	User::WaitForRequest(s);
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	105	t.Close();
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	106
33 0173bcd7697c Revision: 201001 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	107	return Affinity;
0 a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	108	}
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	109
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	110	#ifndef OMIT_MAIN
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	111	GLDEF_C TInt E32Main()
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	112	{
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	113	#ifdef USE_A
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	114	DoNothingA();
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	115	#endif
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	116	#ifdef USE_B
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	117	DoNothingB();
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	118	#endif
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	119	return CheckAffinity();
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	120	}
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	121	#endif // OMIT_MAIN
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	122
a41df078684a Convert Kernelhwsrv package from SFL to EPL John Imhofe parents: diff changeset	123	#endif

author	Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
	Thu, 07 Jan 2010 13:38:45 +0200
changeset 33	0173bcd7697c
parent 0	a41df078684a
child 36	538db54a451d
permissions	-rw-r--r--