diff -r 000000000000 -r bde4ae8d615e os/kernelhwsrv/kerneltest/e32test/thread/t_smpsafe.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/kernelhwsrv/kerneltest/e32test/thread/t_smpsafe.cpp	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,263 @@
+// Copyright (c) 2008-2009 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\thread\t_smpsafe.cpp
+// 
+//
+
+#define __E32TEST_EXTENSION__
+#include <e32test.h>
+#include <e32ldr.h>
+#include <e32svr.h>
+#include "u32std.h"
+#include <u32hal.h>
+#include <d_ldrtst.h>
+
+/////////////////////////////////////////////////////////////////////////////
+//
+//! @SYMTestCaseID			KBASE-T_SMPSAFE-2700
+//! @SYMTestType			UT
+//! @SYMPREQ				PREQ2094
+//! @SYMTestCaseDesc		SMP compatibility mode test
+//! @SYMTestActions			
+//! @SYMTestExpectedResults All tests should pass.
+//! @SYMTestPriority        Medium
+//! @SYMTestStatus          Implemented
+//
+// The test attempts to prove that the SMPSAFE compatibility mode mechanism
+// works and correctly forces processes which contain any unsafe code to run
+// as if they were on a single-cpu machine. This is done by loading and
+// unloading various combinations of DLLs into the test process itself, and
+// by spawning and exiting various EXEs.
+//
+// Two things are checked for each combination:
+//
+// 1) D_LDRTST is used to retrieve the relevant process's SMP unsafe count,
+//    the number of top-level binaries loaded into that process which are not
+//    SMP safe. This works on all systems, including uniprocessor, even if
+//    compatibility mode is not enabled, as this accounting is done
+//    unconditionally.
+//
+// 2) If the system running the test has multiple processors, and one of the
+//    compatibility modes is actually enabled, the test process runs a loop
+//    designed to see if concurrent execution of threads actually happens.
+//    (the loop is in smpsafe.cpp because it is shared between the test and
+//    the small slave programs used).
+
+RTest test(_L("T_SMPSAFE"));
+RLdrTest ldd;
+
+RProcess pLoaded;
+TBool SMPPlatform;
+TBool CompatMode;
+
+extern TInt CheckAffinity();
+
+// load an exe and check that it has the expected SMP unsafe count (check 1)
+// don't resume/delete it yet.
+void DoStartExe(RProcess& p, const TDesC &aFilename, TInt aExpectedUnsafe)
+	{
+	test_KErrNone(p.Create(aFilename, KNullDesC));
+	test_Equal(aExpectedUnsafe, ldd.ProcessSMPUnsafeCount(p.Handle()));
+	}
+
+// resume the exe and if compatibility mode is available, check that the
+// expected outcome of the test loop was observed (check 2)
+// delete it afterward.
+void DoStopExe(RProcess& p, TInt aExpectedUnsafe)
+	{
+	TRequestStatus s;
+	p.Logon(s);
+	p.Resume();
+	User::WaitForRequest(s);
+	if (CompatMode)
+		test_Equal(aExpectedUnsafe ? 1 : 0, s.Int());
+	test_Equal(EExitKill, p.ExitType());
+	p.NotifyDestruction(s);
+	p.Close();
+	User::WaitForRequest(s);
+	}
+
+void StartExe(const TDesC &aFilename, TInt aExpectedUnsafe)
+	{
+	DoStartExe(pLoaded, aFilename, aExpectedUnsafe);
+	}
+
+void StopExe(TInt aExpectedUnsafe)
+	{
+	DoStopExe(pLoaded, aExpectedUnsafe);
+	}
+
+// start and stop an exe, doing both checks 1 and 2.
+void TryExe(const TDesC &aFilename, TInt aExpectedUnsafe)
+	{
+	RProcess p;
+	DoStartExe(p, aFilename, aExpectedUnsafe);
+	DoStopExe(p, aExpectedUnsafe);
+	}
+
+// check the main test process, both checks 1 and 2.
+void CheckSelf(TInt aExpectedUnsafe)
+	{
+	test_Equal(aExpectedUnsafe, ldd.ProcessSMPUnsafeCount(RProcess().Handle()));
+	if (CompatMode)
+		test_Equal(aExpectedUnsafe ? 1 : 0, CheckAffinity());
+	}
+
+GLDEF_C TInt E32Main()
+	{
+	RLibrary l, l2;
+
+	// Turn off evil lazy dll unloading
+	RLoader ldr;
+	test(ldr.Connect()==KErrNone);
+	test(ldr.CancelLazyDllUnload()==KErrNone);
+	ldr.Close();
+
+	test.Title();
+	test.Start(_L("Test SMP safe binary flag"));
+
+	test.Next(_L("Get number of CPUs"));
+	TInt cpus = UserSvr::HalFunction(EHalGroupKernel, EKernelHalNumLogicalCpus, 0, 0);
+	test_Compare(cpus, >, 0);
+	SMPPlatform = cpus > 1;
+	if (!SMPPlatform)
+		{
+		CompatMode = EFalse;
+		test.Printf(_L("*****************************************************\n"));
+		test.Printf(_L("Uniprocessor system, not actually testing compat mode\n"));
+		test.Printf(_L("*****************************************************\n"));
+		}
+	else
+		{
+		test.Next(_L("Get compatibility mode setting"));
+		TInt flags = UserSvr::HalFunction(EHalGroupKernel, EKernelHalConfigFlags, 0, 0);
+		test_Compare(flags, >=, 0);
+		CompatMode = flags & (EKernelConfigSMPUnsafeCompat | EKernelConfigSMPUnsafeCPU0);
+		if (!CompatMode)
+			{
+			test.Printf(_L("*************************************************\n"));
+			test.Printf(_L("Compatibility mode is not enabled, not testing it\n"));
+			test.Printf(_L("*************************************************\n"));
+			}
+		}
+
+	test.Next(_L("Load test LDD"));
+	TInt r = User::LoadLogicalDevice(_L("d_ldrtst.ldd"));
+	test(r==KErrNone || r==KErrAlreadyExists);
+	test_KErrNone(ldd.Open());
+
+	test.Next(_L("Check we are safe ourselves"));
+	CheckSelf(0);
+
+	test.Next(_L("Check safe exe"));
+	StartExe(_L("smpsafe0.exe"), 0);
+	test.Next(_L("Load already loaded safe exe (self)"));
+	TryExe(_L("smpsafe0.exe"), 0);
+	StopExe(0);
+
+	test.Next(_L("Check safe XIP exe"));
+	StartExe(_L("smpsafex0.exe"), 0);
+	test.Next(_L("Load already loaded safe XIP exe (self)"));
+	TryExe(_L("smpsafex0.exe"), 0);
+	StopExe(0);
+
+	test.Next(_L("Load unsafe exe"));
+	StartExe(_L("smpsafe1.exe"), 1);
+	test.Next(_L("Load already loaded unsafe exe"));
+	TryExe(_L("smpsafe1.exe"), 1);
+	StopExe(1);
+
+	test.Next(_L("Load safe exe directly linked to unsafe dll"));
+	TryExe(_L("smpsafe2.exe"), 1);
+
+	test.Next(_L("Dynamically load unsafe dll"));
+	test_KErrNone(l.Load(_L("smpsafea.dll")));
+	CheckSelf(1);
+	test.Next(_L("Load safe exe directly linked to loaded unsafe dll"));
+	TryExe(_L("smpsafe2.exe"), 1);
+	test.Next(_L("Dynamically unload unsafe dll"));
+	l.Close();
+	CheckSelf(0);
+
+	test.Next(_L("Load safe XIP exe directly linked to unsafe XIP dll"));
+	TryExe(_L("smpsafex2.exe"), 1);
+
+	test.Next(_L("Dynamically load unsafe XIP dll"));
+	test_KErrNone(l.Load(_L("smpsafexa.dll")));
+	CheckSelf(1);
+	test.Next(_L("Load safe XIP exe directly linked to loaded unsafe XIP dll"));
+	TryExe(_L("smpsafex2.exe"), 1);
+	test.Next(_L("Dynamically unload unsafe XIP dll"));
+	l.Close();
+	CheckSelf(0);
+
+	test.Next(_L("Load safe exe indirectly linked to unsafe dll"));
+	TryExe(_L("smpsafe3.exe"), 1);
+
+	test.Next(_L("Dynamically load unsafe dll"));
+	test_KErrNone(l.Load(_L("smpsafea.dll")));
+	CheckSelf(1);
+	test.Next(_L("Load safe exe indirectly linked to loaded unsafe dll"));
+	TryExe(_L("smpsafe3.exe"), 1);
+	test.Next(_L("Dynamically unload unsafe dll"));
+	l.Close();
+	CheckSelf(0);
+
+	test.Next(_L("Dynamically load safe dll linked to unsafe dll"));
+	test_KErrNone(l.Load(_L("smpsafeb.dll")));
+	CheckSelf(1);
+	test.Next(_L("Load safe exe indirectly linked to unsafe dll, inbetween loaded"));
+	TryExe(_L("smpsafe3.exe"), 1);
+	test.Next(_L("Dynamically load unsafe dll as well"));
+	test_KErrNone(l2.Load(_L("smpsafea.dll")));
+	CheckSelf(2);
+	test.Next(_L("Dynamically unload safe dll linked to unsafe dll"));
+	l.Close();
+	CheckSelf(1);
+	test.Next(_L("Dynamically unload unsafe dll as well"));
+	l2.Close();
+	CheckSelf(0);
+
+	test.Next(_L("Load safe exe directly linked to unsafe XIP dll"));
+	TryExe(_L("smpsafe4.exe"), 1);
+
+	test.Next(_L("Dynamically load unsafe XIP dll"));
+	test_KErrNone(l.Load(_L("smpsafexa.dll")));
+	CheckSelf(1);
+	test.Next(_L("Load safe exe directly linked to loaded unsafe XIP dll"));
+	TryExe(_L("smpsafe4.exe"), 1);
+	test.Next(_L("Dynamically unload unsafe XIP dll"));
+	l.Close();
+	CheckSelf(0);
+
+	test.Next(_L("Dynamically load figure-eight dll cycle"));
+	test_KErrNone(l.Load(_L("smpsafec.dll")));
+	CheckSelf(1);
+	test.Next(_L("Load figure-eight from a different point"));
+	test_KErrNone(l2.Load(_L("smpsafed.dll")));
+	CheckSelf(2);
+	test.Next(_L("Unload original point"));
+	l.Close();
+	CheckSelf(1);
+	test.Next(_L("Unload second point"));
+	l2.Close();
+	CheckSelf(0);
+
+	test.Next(_L("Close test LDD"));
+	ldd.Close();
+	test_KErrNone(User::FreeLogicalDevice(KLdrTestLddName));
+
+	test.End();
+	return KErrNone;
+	}