diff -r 000000000000 -r a41df078684a kerneltest/e32test/mmu/t_chunk4.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kerneltest/e32test/mmu/t_chunk4.cpp	Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,485 @@
+// 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\mmu\t_chunk4.cpp
+// Overview:
+// Test disconnected chunks
+// API Information:
+// RChunk, CBase
+// Details:
+// - Check Allocate/Commit/Decommit methods on local disconnected chunk and write/read 
+// access to both committed and uncommitted regions.
+// - Check IPC that involves local disconnected chunk and verify results are as expected.
+// Platforms/Drives/Compatibility:
+// All.
+// Assumptions/Requirement/Pre-requisites:
+// Failures and causes:
+// Base Port information:
+// 
+//
+
+#define __E32TEST_EXTENSION__
+#include <e32test.h>
+#include "u32std.h"
+#include "mmudetect.h"
+#include "../misc/prbs.h"
+#include "d_memorytest.h"
+#include "freeram.h"
+
+RTest test(_L("T_CHUNK4"));
+
+RMemoryTestLdd TestLdd;
+
+TUint RndSeed[2];
+
+class CChunk : public CBase
+	{
+public:
+	static CChunk* New(TInt aMaxSize);
+public:
+	virtual ~CChunk();
+	TInt Verify();
+	TInt Commit(TInt anOffset, TInt aSize);
+	TInt Allocate(TInt aSize);
+	TInt Decommit(TInt anOffset, TInt aSize);
+	void CheckL(volatile TUint* aPtr);
+	TInt AddPages(TInt anOffset, TInt aSize);
+	TInt RemovePages(TInt anOffset, TInt aSize);
+public:
+	RChunk iChunk;
+	TUint8* iPageInfo;
+	TInt iPageSize;
+	TInt iMaxSize;
+	TInt iNumPages;
+	};
+
+CChunk* CChunk::New(TInt aMaxSize)
+	{
+	CChunk* pC=new CChunk;
+	if (pC)
+		{
+		TInt p;
+		UserHal::PageSizeInBytes(p);
+		pC->iPageSize=p;
+		pC->iMaxSize=aMaxSize;
+		TInt n=aMaxSize/p;
+		pC->iNumPages=n;
+		TInt r=pC->iChunk.CreateDisconnectedLocal(0,0,aMaxSize);
+		if (r==KErrNone)
+			{
+			TUint8* pI=(TUint8*)User::Alloc(n);
+			if (pI)
+				{
+				pC->iPageInfo=pI;
+				Mem::FillZ(pI,n);
+				}
+			else
+				r=KErrNoMemory;
+			}
+		if (r!=KErrNone)
+			{
+			delete pC;
+			pC=NULL;
+			}
+		}
+	return pC;
+	}
+
+CChunk::~CChunk()
+	{
+	delete iPageInfo;
+	iChunk.Close();
+	}
+
+void CChunk::CheckL(volatile TUint* aPtr)
+	{
+	TUint x=*aPtr;
+	*aPtr=x;
+	}
+
+TInt CChunk::Verify()
+	{
+//	test.Getch();
+	TInt i;
+	TUint8* base=iChunk.Base();
+	for (i=0; i<iNumPages; i++)
+		{
+		volatile TUint* pX=(volatile TUint*)base;
+		TInt r=TestLdd.ReadWriteMemory((TAny*)pX);
+		TUint8 info=iPageInfo[i];
+		if (info==0 && r==KErrNone)
+			return KErrGeneral;
+		if (info!=0 && r!=KErrNone)
+			return KErrAccessDenied;
+		if (info!=0)
+			{
+			TUint seed[2];
+			seed[0]=info<<8;
+			seed[1]=0;
+			TInt j;
+			for (j=0; j<iPageSize; j+=4)
+				{
+				if (*pX++!=Random(seed))
+					return KErrArgument;
+				}
+			}
+		base+=iPageSize;
+		}
+	return KErrNone;
+	}
+
+TInt CChunk::AddPages(TInt anOffset, TInt aSize)
+	{
+	TInt i=anOffset/iPageSize;
+	TInt n=aSize/iPageSize;
+	TInt e=i+n;
+	TUint* p=(TUint*)(iChunk.Base()+anOffset);
+	for (; i<e; i++)
+		{
+		TUint8 s=(TUint8)Random(RndSeed);
+		if (s==0)
+			s=1;
+		iPageInfo[i]=s;
+		TUint seed[2];
+		seed[0]=s<<8;
+		seed[1]=0;
+		TInt j;
+		for (j=0; j<iPageSize; j+=4)
+			{
+			*p++=Random(seed);
+			}
+		}
+	return KErrNone;
+	}
+
+TInt CChunk::RemovePages(TInt anOffset, TInt aSize)
+	{
+	TInt i=anOffset/iPageSize;
+	TInt n=aSize/iPageSize;
+	TInt e=i+n;
+	for (; i<e; i++)
+		iPageInfo[i]=0;
+	return KErrNone;
+	}
+
+TInt CChunk::Commit(TInt anOffset, TInt aSize)
+	{
+	TInt r=iChunk.Commit(anOffset,aSize);
+	if (r==KErrNone)
+		{
+		AddPages(anOffset,aSize);
+		}
+	return r;
+	}
+
+TInt CChunk::Allocate(TInt aSize)
+	{
+	TInt r=iChunk.Allocate(aSize);
+	if (r>=0)
+		{
+		AddPages(r,aSize);
+		}
+	return r;
+	}
+
+TInt CChunk::Decommit(TInt anOffset, TInt aSize)
+	{
+	TInt r=iChunk.Decommit(anOffset,aSize);
+	if (r==KErrNone)
+		{
+		RemovePages(anOffset,aSize);
+		}
+	return r;
+	}
+
+// Stuff to test remote writes
+_LIT(KServerName, "Chunk4Test");
+
+class CTestSession : public CSession2
+	{
+public:
+	CTestSession();
+	virtual void ServiceL(const RMessage2& aMessage);
+	};
+
+class CTestServer : public CServer2
+	{
+public:
+	CTestServer();
+	virtual CSession2* NewSessionL(const TVersion& aVersion, const RMessage2& aMessage) const;
+	};
+
+class RTestSession : public RSessionBase
+	{
+public:
+	enum {ETestIpc, ETestStop};
+	TInt Connect();
+	void Stop();
+	TInt TestRemoteWrite(TInt aLength, TInt anOffset1, TInt anOffset2, TInt anOffset3, TInt anOffset4);
+	TInt IpcWrite(TDes8* aRemoteDest, const TAny* aLocalSrc, TInt aOffset);
+	};
+
+CTestSession::CTestSession()
+	{
+	}
+
+void CTestSession::ServiceL(const RMessage2& aMessage)
+	{
+	switch (aMessage.Function())
+		{
+		case RTestSession::ETestIpc:
+			{
+			const TDesC8& localSrc = *(const TDesC8*)aMessage.Ptr1();
+			TInt offset = aMessage.Int2();
+			TInt r = aMessage.Write(0, localSrc, offset);
+			aMessage.Complete(r);
+			break;
+			}
+		case RTestSession::ETestStop:
+			CActiveScheduler::Stop();
+			break;
+		default:
+			User::Invariant();
+		}
+	}
+
+CTestServer::CTestServer()
+	: CServer2(0)
+	{
+	}
+
+CSession2* CTestServer::NewSessionL(const TVersion& /*aVersion*/, const RMessage2& /*aMessage*/) const
+	{
+	return new (ELeave) CTestSession;
+	}
+
+TInt ServerThread(TAny*)
+	{
+	CActiveScheduler* pA = new CActiveScheduler;
+	CTestServer* pS = new CTestServer;
+	if (!pA || !pS)
+		return KErrNoMemory;
+	CActiveScheduler::Install(pA);
+	TInt r = pS->Start(KServerName);
+	if (r!=KErrNone)
+		return r;
+	RThread::Rendezvous(KErrNone);
+	CActiveScheduler::Start();
+	return KErrNone;
+	}
+
+TInt RTestSession::Connect()
+	{
+	RThread t;
+	TInt r = t.Create(KServerName, ServerThread, 0x1000, 0x1000, 0x10000, NULL);
+	test(r==KErrNone);
+	t.SetPriority(EPriorityMore);
+	TRequestStatus s;
+	t.Rendezvous(s);
+	test(s==KRequestPending);
+	t.Resume();
+	User::WaitForRequest(s);
+	test(t.ExitType()==EExitPending);
+	test(s==KErrNone);
+	t.Close();
+	r = CreateSession(KServerName, TVersion());
+	return r;
+	}
+
+void RTestSession::Stop()
+	{
+	TInt r = SendReceive(ETestStop);
+	test(r==KErrServerTerminated);
+	Close();
+	}
+
+TInt RTestSession::IpcWrite(TDes8* aRemoteDest, const TAny* aLocalSrc, TInt aOffset)
+	{
+	return SendReceive(ETestIpc, TIpcArgs(aRemoteDest, aLocalSrc, aOffset));
+	}
+
+TInt RTestSession::TestRemoteWrite(TInt aLength, TInt anOffset1, TInt anOffset2, TInt anOffset3, TInt anOffset4)
+	{
+	test.Printf(_L("%x %x %x %x %x\n"),aLength,anOffset1,anOffset2,anOffset3,anOffset4);
+
+	TBool ptr=(anOffset1>=0);
+	TDes8* pDes;
+	TUint8* pData;
+	RChunk c;
+	TInt r=c.CreateDisconnectedLocal(0,0,0x800000);
+	test(r==KErrNone);
+	TUint8* base=c.Base();
+	if (ptr)
+		{
+		r=c.Commit(anOffset1,(TInt)sizeof(TPtr8));
+		test(r==KErrNone);
+		pDes=(TDes8*)(base+anOffset1);
+		Mem::FillZ(pDes,(TInt)sizeof(TPtr8));
+		r=c.Commit(anOffset2,aLength);
+		test(r==KErrNone);
+		pData=base+anOffset2;
+		Mem::FillZ(pData,aLength);
+		new(pDes) TPtr8(pData,0,aLength);
+		test(pDes->Length()==0);
+		test(pDes->MaxLength()==aLength);
+		test(pDes->Ptr()==pData);
+		}
+	else
+		{
+		TInt len=(TInt)sizeof(TDes8)+aLength;
+		r=c.Commit(anOffset2,len);
+		test(r==KErrNone);
+		pDes=(TDes8*)(base+anOffset2);
+		Mem::FillZ(pDes,len);
+		pData=base+anOffset2+(TInt)sizeof(TDes8);
+		new(pDes) TBuf8<1>;
+		((TInt*)pDes)[1]=aLength;
+		test(pDes->Length()==0);
+		test(pDes->MaxLength()==aLength);
+		test(pDes->Ptr()==pData);
+		}
+	TInt slen=aLength-anOffset3;
+	TUint8* pS=(TUint8*)User::Alloc(aLength);
+	test(pS!=NULL);
+	Mem::FillZ(pS,aLength);
+	TPtrC8 src(pS+anOffset3,slen);
+	TInt i;
+	for (i=anOffset3; i<aLength; i++)
+		pS[i]=(TUint8)Random(RndSeed);
+	if (anOffset4>=0)
+		c.Decommit(anOffset4,0x1000);
+	r = IpcWrite(pDes, &src, anOffset3);
+	if (r==KErrNone)
+		{
+		TPtrC8 tsrc(pS,aLength);
+		if (*pDes!=tsrc)
+			r=KErrCorrupt;
+		}
+	User::Free(pS);
+	c.Close();
+	test.Printf(_L("Return value %d\n"),r);
+	return r;
+	}
+
+GLDEF_C TInt E32Main()
+	{
+	RndSeed[0]=0xddb3d743;
+	RndSeed[1]=0;
+
+	test.Title();
+	if (!HaveVirtMem())
+		{
+		test.Printf(_L("This test requires an MMU\n"));
+		return KErrNone;
+		}
+	test.Start(_L("Testing Disconnected Chunks"));
+
+	test.Printf(_L("Load test LDD\n"));
+	test(TestLdd.Open()==KErrNone);
+
+	CChunk* pC=CChunk::New(0x800000);
+	test(pC!=NULL);
+	TInt free=FreeRam();
+	test.Printf(_L("Free RAM %08x\n"),free);
+	test(pC->Verify()==KErrNone);
+	test.Printf(_L("Commit 0+0x1000\n"));
+	test(pC->Commit(0,0x1000)==KErrNone);
+	test(pC->Verify()==KErrNone);
+	test.Printf(_L("Commit 0+0x1000 (again)\n"));
+	test(pC->Commit(0,0x1000)==KErrAlreadyExists);
+	test(pC->Verify()==KErrNone);
+	test.Printf(_L("Commit 0x3000+0x1000\n"));
+	test(pC->Commit(0x3000,0x1000)==KErrNone);
+	test(pC->Verify()==KErrNone);
+	test.Printf(_L("Commit 0x2000+0x3000 (overlaps previous)\n"));
+	test(pC->Commit(0x2000,0x3000)==KErrAlreadyExists);
+	test(pC->Verify()==KErrNone);
+	test.Printf(_L("Allocate 0x5000\n"));
+	test(pC->Allocate(0x5000)==0x4000);
+	test(pC->Verify()==KErrNone);
+	test.Printf(_L("Allocate 0x1000\n"));
+	test(pC->Allocate(0x1000)==0x1000);
+	test(pC->Verify()==KErrNone);
+	test.Printf(_L("Decommit 0+0x4000\n"));
+	test(pC->Decommit(0,0x4000)==KErrNone);
+	test(pC->Verify()==KErrNone);
+	test.Printf(_L("Decommit 0+0x4000 (again)\n"));
+	test(pC->Decommit(0,0x4000)==KErrNone);
+	test(pC->Verify()==KErrNone);
+	test.Printf(_L("Allocate 0x4000\n"));
+	test(pC->Allocate(0x4000)==0x0000);
+	test(pC->Verify()==KErrNone);
+	test.Printf(_L("Decommit 0+0x10000\n"));
+	test(pC->Decommit(0,0x10000)==KErrNone);
+	test(pC->Verify()==KErrNone);
+	test.Printf(_L("Check Free RAM\n"));
+	test(FreeRam()==free);
+
+	test.Printf(_L("Commit 0x700000+0x10000\n"));
+	test(pC->Commit(0x700000,0x10000)==KErrNone);
+	test(pC->Verify()==KErrNone);
+	test.Printf(_L("Allocate 0x4000\n"));
+	test(pC->Allocate(0x4000)==0x0000);
+	test(pC->Verify()==KErrNone);
+	test.Printf(_L("Decommit 0+0x800000\n"));
+	test(pC->Decommit(0,0x800000)==KErrNone);
+	test(pC->Verify()==KErrNone);
+	test.Printf(_L("Check Free RAM\n"));
+	test(FreeRam()==free);
+
+	delete pC;
+
+	// Test decommiting from a chunk which has no memory commited
+	// in the first megabyte. On the moving memory model, such
+	// chunks have a non-zero iHomeRegionOffset value and has been
+	// the cause of defects (DEF121857)
+	test.Printf(_L("Create new chunk\n"));
+	pC=CChunk::New(0x800000);
+	test(pC!=NULL);
+	test.Printf(_L("Commit 0x100000+0x3000\n"));
+	test(pC->Commit(0x100000,0x3000)==KErrNone);
+	test(pC->Verify()==KErrNone);
+	test.Printf(_L("Decommit 0+0x101000\n"));
+	test(pC->Decommit(0,0x101000)==KErrNone);
+	test(pC->Verify()==KErrNone);
+	test.Printf(_L("Decommit 0x101000+0x1000\n"));
+	test(pC->Decommit(0x101000,0x1000)==KErrNone);
+	test(pC->Verify()==KErrNone);
+	test.Printf(_L("Decommit 0x100000+0x100000\n"));
+	test(pC->Decommit(0x100000,0x100000)==KErrNone);
+	test(pC->Verify()==KErrNone);
+	delete pC;
+
+	test.Next(_L("Testing RThread::Write to disconnected chunks"));
+	RTestSession ts;
+	TInt r = ts.Connect();
+	test(r==KErrNone);
+	test(ts.TestRemoteWrite(64,0,0x3000,0,-1)==KErrNone);
+	test(ts.TestRemoteWrite(64,0xffc,0x8000,0,-1)==KErrNone);
+	test(ts.TestRemoteWrite(256,0xffc,0x7f80,0,-1)==KErrNone);
+	test(ts.TestRemoteWrite(256,0xffc,0x7f80,128,-1)==KErrNone);
+	test(ts.TestRemoteWrite(0x10000,0xffc,0x707f80,0,-1)==KErrNone);
+	test(ts.TestRemoteWrite(0x10000,0xffc,0x707f80,0x2000,-1)==KErrNone);
+	test(ts.TestRemoteWrite(64,-1,0x3000,0,-1)==KErrNone);
+	test(ts.TestRemoteWrite(0x10000,-1,0xfff00,0x2000,-1)==KErrNone);
+	test(ts.TestRemoteWrite(256,0xffc,0x7f80,16,0)==KErrBadDescriptor);
+	test(ts.TestRemoteWrite(256,0xffc,0x7f80,16,0x1000)==KErrBadDescriptor);
+	test(ts.TestRemoteWrite(256,0xffc,0x7f80,16,0x7000)==KErrBadDescriptor);
+	test(ts.TestRemoteWrite(256,0xffc,0x7f80,16,0x8000)==KErrBadDescriptor);
+	test(ts.TestRemoteWrite(0x10000,0xffc,0x707f80,0x2000,0x710000)==KErrBadDescriptor);
+	test(ts.TestRemoteWrite(0x10000,-1,0xfff00,0x1000,0x100000)==KErrBadDescriptor);
+	ts.Stop();
+
+	test.End();
+	return 0;
+	}