--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kerneltest/e32test/buffer/t_tbma.cpp	Thu Dec 17 09:24:54 2009 +0200
@@ -0,0 +1,1256 @@
+// 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\buffer\t_tbma.cpp
+// 
+//
+
+#define __E32TEST_EXTENSION__
+#include "t_tbma.h"
+#include <cpudefs.h>
+#include <e32atomics.h>
+
+RTest test(_L("T_TBMA"));
+
+
+/**************************************
+ * class TBmaList
+ **************************************/
+
+TBmaList* TBmaList::New(TInt aNumBmas)
+	{
+	TBmaList* pL=new TBmaList;
+	if (pL)
+		{
+		pL->iNumBmas=aNumBmas;
+		pL->iBmaList=(TBitMapAllocator**)User::Alloc(aNumBmas*sizeof(TBitMapAllocator*));
+		if (pL->iBmaList)
+			Mem::FillZ(pL->iBmaList, aNumBmas*sizeof(TBitMapAllocator*));
+		pL->iBaseList=(TInt*)User::Alloc((aNumBmas+1)*sizeof(TInt));
+		if (!pL->iBmaList || !pL->iBaseList)
+			{
+			delete pL;
+			pL=NULL;
+			}
+		}
+	return pL;
+	}
+
+TBmaList* TBmaList::New(const TBitMapAllocator& aBma, TInt aNumSplits, VA_LIST aList)
+	{
+	TBmaList* pL=TBmaList::New(aNumSplits+1);
+	if (!pL)
+		return NULL;
+	TInt i;
+	pL->iBaseList[0]=0;
+	for (i=1; i<=aNumSplits; ++i)
+		pL->iBaseList[i]=VA_ARG(aList,TInt);
+	pL->iBaseList[aNumSplits+1]=aBma.iSize;
+	for (i=0; i<=aNumSplits; ++i)
+		{
+		TInt sz=pL->iBaseList[i+1]-pL->iBaseList[i];
+		__ASSERT_ALWAYS(sz>0, TBMA_FAULT());
+		pL->iBmaList[i]=TBitMapAllocator::New(sz,EFalse);
+		if (!pL->iBmaList[i])
+			{
+			delete pL;
+			return NULL;
+			}
+		TInt j;
+		for (j=0; j<sz; ++j)
+			{
+			if (aBma.NotAllocated(j+pL->iBaseList[i],1))
+				pL->iBmaList[i]->Free(j);
+			}
+		}
+	return pL;
+	}
+
+TBmaList::TBmaList()
+	{
+	iNumBmas=0;
+	iBmaList=NULL;
+	iBaseList=NULL;
+	}
+
+TBmaList::~TBmaList()
+	{
+	TInt i;
+	for (i=0; i<iNumBmas; ++i)
+		delete iBmaList[i];
+	User::Free(iBmaList);
+	User::Free(iBaseList);
+	}
+/*
+ * Extended first fit allocator
+ */
+TInt TBmaList::AllocConsecutiveFF(TInt aLength)
+	{
+	TInt base=KErrNotFound;
+	TInt bmalen=0;
+	TInt carry=0;
+	TBitMapAllocator** ppA=iBmaList;		// pointer to list of TBitMapAllocator*
+	TBitMapAllocator** pE=ppA+iNumBmas;
+	TInt* pB=iBaseList;
+	for (; ppA<pE; ++ppA, ++pB)
+		{
+		TBitMapAllocator* pA=*ppA;
+		if (*pB!=base+bmalen)
+			{
+			// this BMA is not contiguous with previous one
+			carry=0;
+			}
+		base=*pB;
+		bmalen=pA->iSize;
+		TInt l;
+		TInt r=pA->AllocAligned(aLength,0,0,EFalse,carry,l);
+		if (r>=0)
+			return base+r-carry;
+		}
+	return KErrNotFound;
+	}
+
+/*
+ * Extended best fit allocator
+ */
+TInt TBmaList::AllocConsecutiveBF(TInt aLength)
+	{
+	TInt bmalen=0;
+	TInt carry=0;
+	TInt minrun=KMaxTInt;
+	TInt minrunpos=KErrNotFound;
+	TBitMapAllocator** ppA=iBmaList;		// pointer to list of TBitMapAllocator*
+	TBitMapAllocator** pE=ppA+iNumBmas;
+	TInt* pB=iBaseList;
+	TInt base=*pB;
+	for (; ppA<pE; ++ppA, ++pB)
+		{
+		TBitMapAllocator* pA=*ppA;
+		if (*pB!=base+bmalen)
+			{
+			// this BMA is not contiguous with previous one
+			// check final run of previous BMA
+			if (carry<minrun)
+				{
+				minrun=carry;
+				minrunpos=base+bmalen-carry;
+				}
+			carry=0;
+			}
+		base=*pB;
+		bmalen=pA->iSize;
+		TInt l=KMaxTInt;
+		TInt oldc=carry;
+		TInt r=pA->AllocAligned(aLength,0,0,ETrue,carry,l);
+		if (r>=0)
+			{
+			// check shortest run in this BMA
+			if (l<minrun)
+				{
+				minrun=l;
+				minrunpos=r ? (base+r) : (base-oldc);
+				if (minrun==aLength)
+					break;				// exact match so finish
+				}
+			}
+		}
+	// check final run of last BMA
+	if (ppA==pE && carry>=aLength && carry<minrun)
+		minrunpos=base+bmalen-carry;
+	return minrunpos;
+	}
+
+/*
+ * Extended first fit aligned allocator
+ */
+TInt TBmaList::AllocAlignedFF(TInt aLength, TInt aAlign)
+	{
+	TUint32 alignsize=1<<aAlign;
+	TUint32 alignmask=alignsize-1;
+	TInt base=KErrNotFound;
+	TInt bmalen=0;
+	TInt carry=0;
+	TBitMapAllocator** ppA=iBmaList;		// pointer to list of TBitMapAllocator*
+	TBitMapAllocator** pE=ppA+iNumBmas;
+	TInt* pB=iBaseList;
+	for (; ppA<pE; ++ppA, ++pB)
+		{
+		TBitMapAllocator* pA=*ppA;
+		if (*pB!=base+bmalen)
+			{
+			// this BMA is not contiguous with previous one
+			carry=0;
+			}
+		base=*pB;
+		bmalen=pA->iSize;
+		TInt l;
+		TInt r=pA->AllocAligned(aLength,aAlign,base,EFalse,carry,l);
+		if (r>=0)
+			return (base+r-carry+alignmask)&~alignmask;
+		}
+	return KErrNotFound;
+	}
+
+/*
+ * Extended best fit aligned allocator
+ */
+TInt TBmaList::AllocAlignedBF(TInt aLength, TInt aAlign)
+	{
+	TInt bmalen=0;
+	TInt carry=0;
+	TInt minrun=KMaxTInt;
+	TInt minrunpos=KErrNotFound;
+	TUint32 alignsize=1<<aAlign;
+	TUint32 alignmask=alignsize-1;
+	TBitMapAllocator** ppA=iBmaList;		// pointer to list of TBitMapAllocator*
+	TBitMapAllocator** pE=ppA+iNumBmas;
+	TInt* pB=iBaseList;
+	TInt base=*pB;
+	for (; ppA<pE; ++ppA, ++pB)
+		{
+		TBitMapAllocator* pA=*ppA;
+		if (*pB!=base+bmalen)
+			{
+			// this BMA is not contiguous with previous one
+			// check final run of previous BMA
+			if (carry<minrun)
+				{
+				TInt fpos=base+bmalen-carry;
+				TInt lost=((fpos+base+alignmask)&~alignmask)-base-fpos;
+				if (carry-lost>=aLength)
+					{
+					minrun=carry;
+					minrunpos=fpos;
+					}
+				}
+			carry=0;
+			}
+		base=*pB;
+		bmalen=pA->iSize;
+		TInt l=KMaxTInt;
+		TInt oldc=carry;
+		TInt r=pA->AllocAligned(aLength,aAlign,base,ETrue,carry,l);
+		if (r>=0)
+			{
+			// check shortest run in this BMA
+			if (l<minrun)
+				{
+				minrun=l;
+				minrunpos=r ? (base+r) : (base-oldc);
+				if (minrun==aLength)
+					break;				// exact match so finish
+				}
+			}
+		}
+	// check final run of last BMA
+	if (ppA==pE && carry<minrun)
+		{
+		TInt fpos=base+bmalen-carry;
+		TInt lost=((fpos+alignmask)&~alignmask)-fpos;
+		if (carry-lost>=aLength)
+			{
+			minrun=carry;
+			minrunpos=fpos;
+			}
+		}
+	return (minrunpos<0) ? minrunpos : ((minrunpos+alignmask)&~alignmask);
+	}
+
+
+
+
+
+
+
+
+void Display(TBitMapAllocator* aBma)
+	{
+	test.Printf(_L("Free %d FirstCheck %08x Size %d Map %08x\n"),aBma->iAvail,aBma->iCheckFirst,aBma->iSize,aBma->iMap);
+	TInt i;
+	TInt l=0;
+	for (i=0; i<((aBma->iSize+31)>>5); i++)
+		{
+		if (++l==10)
+			{
+			l=0;
+//			test.Getch();
+			}
+		TUint32 x=aBma->iMap[i];
+		TBuf<80> buf;
+		buf.NumFixedWidth(x,EBinary,32);
+		buf.Append(_L("\n"));
+		test.Printf(buf);
+		}
+	test.Getch();
+	}
+
+void Check(TBitMapAllocator& a)
+	{
+	TInt l=a.iSize;
+	l=(l+31)>>5;
+	TInt n=0;
+	TInt i;
+	TUint32* first=NULL;
+	for (i=0; i<l; ++i)
+		{
+		TUint32 w=a.iMap[i];
+		if (w && !first)
+			first=a.iMap+i;
+		n+=__e32_bit_count_32(w);
+		}
+	test(a.Avail()==n);
+	test(first?(a.iCheckFirst<=first):(a.iCheckFirst>=a.iMap && a.iCheckFirst<=a.iMap+l));
+	}
+
+void TestConstruct(TInt aSize)
+	{
+	test.Printf(_L("TestConstruct %d\n"),aSize);
+	TBitMapAllocator* pA;
+	pA=TBitMapAllocator::New(aSize, EFalse);
+	test(pA!=NULL);
+	test(pA->Avail()==0);
+	Check(*pA);
+	delete pA;
+	pA=TBitMapAllocator::New(aSize, ETrue);
+	test(pA!=NULL);
+	test(pA->Avail()==aSize);
+	Check(*pA);
+	delete pA;
+	}
+
+void TestAlloc1(TInt aSize)
+	{
+	test.Printf(_L("TestAlloc1 %d\n"),aSize);
+	TBitMapAllocator* pA=TBitMapAllocator::New(aSize, ETrue);
+	test(pA!=NULL);
+	test(pA->Avail()==aSize);
+	Check(*pA);
+	TInt i;
+	for (i=0; i<aSize; ++i)
+		{
+		TInt r=pA->Alloc();
+		test(r==i);
+		test(pA->Avail()==aSize-i-1);
+		test(pA->iCheckFirst==pA->iMap+i/32);
+		Check(*pA);
+		}
+	test(pA->Alloc()<0);
+	delete pA;
+	}
+
+void TestFree1(TInt aSize)
+	{
+	test.Printf(_L("TestFree1 %d\n"),aSize);
+	TBitMapAllocator* pA=TBitMapAllocator::New(aSize, EFalse);
+	test(pA!=NULL);
+	test(pA->Avail()==0);
+	TInt i;
+	for (i=aSize-1; i>=0; --i)
+		{
+		pA->Free(i);
+		test(pA->Avail()==aSize-i);
+		test(pA->Alloc()==i);
+		pA->Free(i);
+		test(pA->iCheckFirst==pA->iMap+i/32);
+		Check(*pA);
+		}
+	delete pA;
+	}
+
+void TestBlockAlloc(TInt aSize)
+	{
+	test.Printf(_L("TestBlockAlloc %d\n"),aSize);
+	const TInt begin[]={0,1,2,7,16,29,31,32,33,63,64,65,83,128};
+	TBitMapAllocator* pA=TBitMapAllocator::New(aSize, ETrue);
+	test(pA!=NULL);
+	test(pA->Avail()==aSize);
+	pA->Alloc(0,aSize);
+	test(pA->Avail()==0);
+	Check(*pA);
+	pA->Free(0,aSize);
+	test(pA->Avail()==aSize);
+	Check(*pA);
+	TInt i;
+	for (i=0; i<(TInt)(sizeof(begin)/sizeof(TInt)); ++i)
+		{
+		TInt j=begin[i];
+		if (j>aSize)
+			break;
+		TInt l;
+		for (l=1; l<=aSize-j; ++l)
+			{
+//			test.Printf(_L("j=%d, l=%d, s=%d\n"),j,l,aSize);
+			pA->Alloc(j,l);
+			test(pA->Avail()==aSize-l);
+			test(!pA->NotAllocated(j,l));
+			if (j+l<aSize)
+				test(pA->NotAllocated(j,l+1));
+			if (j>0)
+				test(pA->NotAllocated(j-1,l));
+			TInt r=pA->Alloc();
+			if (j==0)
+				{
+				if (l<aSize)
+					test(r==l);
+				else
+					test(r<0);
+				}
+			else
+				test(r==0);
+			if (r==0)
+				{
+				pA->Free(r);
+				pA->Free(j,l);
+				}
+			else if (r>0)
+				pA->Free(j,l+1);
+			else
+				pA->Free(j,l);
+			test(pA->Avail()==aSize);
+			Check(*pA);
+			}
+		}
+	delete pA;
+	}
+
+void TestBlockFree(TInt aSize)
+	{
+	test.Printf(_L("TestBlockFree %d\n"),aSize);
+	const TInt begin[]={0,1,2,7,16,29,31,32,33,63,64,65,83,128};
+	TBitMapAllocator* pA=TBitMapAllocator::New(aSize, EFalse);
+	test(pA!=NULL);
+	test(pA->Avail()==0);
+	TInt i;
+	for (i=0; i<(TInt)(sizeof(begin)/sizeof(TInt)); ++i)
+		{
+		TInt j=begin[i];
+		if (j>aSize)
+			break;
+		TInt l;
+		for (l=1; l<=aSize-j; ++l)
+			{
+//			test.Printf(_L("j=%d, l=%d, s=%d\n"),j,l,aSize);
+			pA->Free(j,l);
+			test(pA->Avail()==l);
+			test(!pA->NotFree(j,l));
+			if (j+l<aSize)
+				test(pA->NotFree(j,l+1));
+			if (j>0)
+				test(pA->NotFree(j-1,l));
+			TInt r=pA->Alloc();
+			test(r==j);
+			if (l>1)
+				pA->Alloc(j+1,l-1);
+			test(pA->Avail()==0);
+			Check(*pA);
+			}
+		}
+	delete pA;
+	}
+
+void TestNotFree(TInt aSize)
+	{
+	test.Printf(_L("TestNotFree %d\n"),aSize);
+	TBitMapAllocator* pA=TBitMapAllocator::New(aSize, ETrue);
+	test(pA!=NULL);
+	test(pA->Avail()==aSize);
+	test(!pA->NotFree(0,aSize));
+	TInt i;
+	for (i=0; i<aSize; ++i)
+		{
+		pA->Alloc(i,1);
+		test(pA->NotFree(0,aSize));
+		TInt j;
+		for (j=1; j*j<=i || j*j+i<=aSize; ++j)
+			{
+			TInt a=Max(i-j*j,0);
+			TInt b=Min(i+j*j,aSize);
+			test(pA->NotFree(a,b-a));
+			}
+		pA->Free(i);
+		test(!pA->NotFree(0,aSize));
+		}
+	const TInt begin[]={0,1,2,7,16,29,31,32,33,63,64,65,83,128};
+	const TInt size[]={2,3,7,16,23,31,32,33,63,64,65,89,128};
+	const TInt* pB=begin;
+	const TInt* pBE=pB+sizeof(begin)/sizeof(TInt);
+	const TInt* pS=size;
+	const TInt* pSE=pS+sizeof(size)/sizeof(TInt);
+	for (; pB<pBE; ++pB)
+		{
+		TInt b=*pB;
+		if (b>=aSize)
+			continue;
+		for (; pS<pSE; ++pS)
+			{
+			TInt l=*pS;
+			if (b+l>aSize)
+				continue;
+			pA->Alloc(b,l);
+			TInt j;
+			for (j=1; j<aSize; ++j)
+				{
+				if (j<=b)
+					test(!pA->NotFree(0,j));
+				else
+					test(pA->NotFree(0,j));
+				if (aSize-j>=b+l)
+					test(!pA->NotFree(aSize-j,j));
+				else
+					test(pA->NotFree(aSize-j,j));
+				}
+			pA->Free(b,l);
+			}
+		}
+	delete pA;
+	}
+
+void TestNotAllocated(TInt aSize)
+	{
+	test.Printf(_L("TestNotAllocated %d\n"),aSize);
+	TBitMapAllocator* pA=TBitMapAllocator::New(aSize, EFalse);
+	test(pA!=NULL);
+	test(pA->Avail()==0);
+	test(!pA->NotAllocated(0,aSize));
+	TInt i;
+	for (i=0; i<aSize; ++i)
+		{
+		pA->Free(i);
+		test(pA->NotAllocated(0,aSize));
+		TInt j;
+		for (j=1; j*j<=i || j*j+i<=aSize; ++j)
+			{
+			TInt a=Max(i-j*j,0);
+			TInt b=Min(i+j*j,aSize);
+			test(pA->NotAllocated(a,b-a));
+			}
+		pA->Alloc(i,1);
+		test(!pA->NotAllocated(0,aSize));
+		}
+	const TInt begin[]={0,1,2,7,16,29,31,32,33,63,64,65,83,128};
+	const TInt size[]={2,3,7,16,23,31,32,33,63,64,65,89,128};
+	const TInt* pB=begin;
+	const TInt* pBE=pB+sizeof(begin)/sizeof(TInt);
+	const TInt* pS=size;
+	const TInt* pSE=pS+sizeof(size)/sizeof(TInt);
+	for (; pB<pBE; ++pB)
+		{
+		TInt b=*pB;
+		if (b>=aSize)
+			continue;
+		for (; pS<pSE; ++pS)
+			{
+			TInt l=*pS;
+			if (b+l>aSize)
+				continue;
+			pA->Free(b,l);
+			TInt j;
+			for (j=1; j<aSize; ++j)
+				{
+				if (j<=b)
+					test(!pA->NotAllocated(0,j));
+				else
+					test(pA->NotAllocated(0,j));
+				if (aSize-j>=b+l)
+					test(!pA->NotAllocated(aSize-j,j));
+				else
+					test(pA->NotAllocated(aSize-j,j));
+				}
+			pA->Alloc(b,l);
+			}
+		}
+	delete pA;
+	}
+
+void TestAllocList(TInt aSize)
+	{
+	test.Printf(_L("TestAllocList %d\n"),aSize);
+	TBitMapAllocator* pA=TBitMapAllocator::New(aSize, EFalse);
+	test(pA!=NULL);
+	test(pA->Avail()==0);
+	TInt i;
+	TInt list[256];
+	for (i=0; i<aSize; ++i)
+		{
+		pA->Free(i);
+		test(pA->AllocList(128,list)==1);
+		test(list[0]==i);
+		test(pA->Avail()==0);
+		}
+	TInt j;
+	for (i=0; i<aSize-1; ++i)
+		{
+		for (j=i+1; j<aSize; ++j)
+			{
+			pA->Free(i);
+			pA->Free(j);
+			test(pA->AllocList(1,list)==1);
+			test(list[0]==i);
+			test(pA->Avail()==1);
+			pA->Free(i);
+			test(pA->AllocList(128,list)==2);
+			test(list[0]==i && list[1]==j);
+			test(pA->Avail()==0);
+			}
+		}
+	TInt l;
+	for (l=1; l<80; ++l)
+		{
+		if (2*l+1>aSize)
+			break;
+		for (i=l+1; i<=aSize-l; ++i)
+			{
+			pA->Free(0,l);
+			pA->Free(i,l);
+			test(pA->Avail()==2*l);
+			TInt l2;
+			for (l2=Max(l-1,1); l2<=2*l; ++l2)
+				{
+				TInt r=pA->AllocList(l2,list);
+//				test.Printf(_L("l2=%d r=%d\n"),l2,r);
+				test(r==l2);
+				for (j=0; j<Min(l2,l); j++)
+					test(list[j]==j);
+				for (j=l; j<l2; j++)
+					test(list[j]==j-l+i);
+				for (j=0; j<l2; ++j)
+					pA->Free(list[j]);
+				pA->SelectiveFree(0,l);
+				pA->SelectiveFree(i,l);
+				test(pA->Avail()==2*l);
+				}
+			pA->Alloc(0,l);
+			pA->Alloc(i,l);
+			Check(*pA);
+			}
+		}
+	delete pA;
+	}
+
+void TestSelectiveFree(TInt aSize)
+	{
+	test.Printf(_L("TestSelectiveFree %d\n"),aSize);
+	TBitMapAllocator* pA=TBitMapAllocator::New(aSize, ETrue);
+	test(pA!=NULL);
+	test(pA->Avail()==aSize);
+	TInt i;
+	TInt j;
+	TInt l;
+	for (i=2; i<8; ++i)
+		{
+		for (l=1; l<=aSize; ++l)
+			{
+			new (pA) TBitMapAllocator(aSize, ETrue);
+			for (j=0; j<aSize; j+=i)
+				pA->Alloc(j,1);
+			TInt orig=pA->Avail();
+			test(orig==aSize-(aSize+i-1)/i);
+			pA->SelectiveFree(0,l);
+			TInt freed=pA->Avail()-orig;
+			test(freed==(l+i-1)/i);
+			Check(*pA);
+			}
+		}
+	for (i=0; i<=Min(32,aSize-1); ++i)
+		{
+		for (l=1; l<=aSize-i; ++l)
+			{
+			for (j=1; j<=aSize; ++j)
+				{
+				new (pA) TBitMapAllocator(aSize, ETrue);
+				pA->Alloc(i,l);
+				test(pA->Avail()==aSize-l);
+				pA->SelectiveFree(0,j);
+				test(pA->Avail()==aSize-l+Max(0,Min(i+l,j)-i));
+				test(!pA->NotFree(0,j));
+				if (j>=i && j<i+l)
+					test(pA->NotFree(0,j+1));
+				Check(*pA);
+				}
+			}
+		}
+	delete pA;
+	}
+
+TBitMapAllocator* DoSetupBMA(TInt aSize, VA_LIST aList)
+	{
+	TBitMapAllocator* pA=TBitMapAllocator::New(aSize, EFalse);
+	test(pA!=NULL);
+	test(pA->Avail()==0);
+	TInt totalfree=0;
+	FOREVER
+		{
+		TInt i=VA_ARG(aList,TInt);
+		if (i<0)
+			break;
+		TInt l=VA_ARG(aList,TInt);
+		pA->Free(i,l);
+		totalfree+=l;
+		}
+	test(pA->Avail()==totalfree);
+	return pA;
+	}
+
+TBitMapAllocator* SetupBMA(TInt aSize, ...)
+	{
+	VA_LIST list;
+	VA_START(list,aSize);
+	return DoSetupBMA(aSize,list);
+	}
+
+void PopulateRangeArray(RArray<SRange>& aArray, VA_LIST aList)
+	{
+	aArray.Reset();
+	TInt n=0;
+	FOREVER
+		{
+		SRange rng;
+		rng.iBase=VA_ARG(aList,TInt);
+		if (rng.iBase<0)
+			break;
+		rng.iLength=VA_ARG(aList,TInt);
+		rng.iLength<<=8;
+		rng.iLength+=n;
+		++n;
+		test(aArray.Append(rng)==KErrNone);
+		}
+	}
+
+TInt FirstFitPos(RArray<SRange>& aArray, TInt aLength)
+	{
+	TInt c=aArray.Count();
+	SRange* pR=&aArray[0];
+	SRange* pE=pR+c;
+	for (; pR<pE; ++pR)
+		{
+		TInt l=pR->iLength>>8;
+		if (l>=aLength)
+			{
+//			test.Printf(_L("FFP %d = %d\n"),aLength,pR->iBase);
+			return pR->iBase;
+			}
+		}
+//	test.Printf(_L("FFP %d = -1\n"),aLength);
+	return -1;
+	}
+
+TInt AlignedFirstFitPos(RArray<SRange>& aArray, TInt aSize, TInt aLength, TInt aAlign, TInt aBase, TInt aOffset=0, TBool aBestFit=EFalse)
+	{
+	TInt alignSize=1<<aAlign;
+	TInt alignMask=alignSize-1;
+	TInt minRun=0;
+	TInt minRunStart=0;
+	TBool runFound = EFalse;
+	TInt c=aArray.Count();
+	SRange* pR=&aArray[0];
+	// Best fit mode should ignore any final run TBitMapAllocator will 
+	// always ignore the final run in best fit mode and rely on carry being
+	// checked by the caller.
+	SRange* pE = pR + c - 1;
+	if (!aBestFit || aSize > pE->iBase + (pE->iLength >> 8))
+		pE++;
+
+	for (; pR<pE; ++pR)
+		{
+		TInt l=pR->iLength>>8;
+		TInt b=pR->iBase;
+		if (aOffset != 0)
+			{
+			aOffset = ((aOffset + aBase + alignMask) & ~alignMask) - aBase;
+			if (aOffset + aLength - 1 >= b + l)
+				{// The offset is after the end of this region.
+				continue;
+				}
+			l -= (aOffset <= b)? 0 : aOffset - b;
+			b += (aOffset <= b)? 0 : aOffset - b;	// Start the search from aOffset
+			}
+		TInt ab=((b+aBase+alignMask)&~alignMask)-aBase;
+		TInt al = l + b - ab;
+		if (al >= aLength)
+			{
+			if (!aBestFit || l == aLength)
+				{
+//				test.Printf(_L("AFFP %d %d %d = %d\n"),aLength,aAlign,aBase,ab);
+				return ab;
+				}
+			if (!runFound || minRun > l)
+				{ 
+				minRun = l;
+				minRunStart = ab;
+				runFound = ETrue;
+				}
+			}
+		}
+	if (runFound)
+		{
+		return minRunStart;
+		}
+//	test.Printf(_L("AFFP %d %d %d = -1\n"),aLength,aAlign,aBase);
+	return -1;
+	}
+
+void DoConsecTest(TInt aSize, ...)
+	{
+	test.Printf(_L("DoConsecTest %d\n"),aSize);
+	VA_LIST list;
+	VA_LIST list2;
+	VA_START(list,aSize);
+	VA_START(list2,aSize);
+	TBitMapAllocator* pA=DoSetupBMA(aSize,list2);
+	RArray<SRange> rangeArray(8,_FOFF(SRange,iLength));
+	PopulateRangeArray(rangeArray, list);
+	TInt n;
+	for (n=1; n<=aSize; ++n)
+		{
+		TInt r1=pA->AllocConsecutive(n,EFalse);
+		TInt r2=FirstFitPos(rangeArray,n);
+//		test.Printf(_L("ALC(%d,0) = %d [%d]\n"),n,r1,r2);
+		test_Equal(r2, r1);
+		}
+	rangeArray.SortUnsigned();	// sort array in ascending order of length
+	for (n=1; n<=aSize; ++n)
+		{
+		TInt r1=pA->AllocConsecutive(n,ETrue);
+		TInt r2=FirstFitPos(rangeArray,n);
+//		test.Printf(_L("ALC(%d,1) = %d [%d]\n"),n,r1,r2);
+		test_Equal(r2, r1);
+		}
+	rangeArray.Close();
+	delete pA;
+	}
+
+void DoAlignedTest(TInt aSize, ...)
+	{
+	test.Printf(_L("DoAlignedTest %d\n"),aSize);
+	VA_LIST list;
+	VA_LIST list2;
+	VA_START(list,aSize);
+	VA_START(list2,aSize);
+	TBitMapAllocator* pA=DoSetupBMA(aSize,list2);
+	RArray<SRange> rangeArray(8,_FOFF(SRange,iLength));
+	PopulateRangeArray(rangeArray, list);
+	TInt finalRunLength = 0;
+	SRange& lastRun = rangeArray[rangeArray.Count() - 1];
+	if (lastRun.iBase + (lastRun.iLength>>8) == aSize)
+		{// The last run is at the end of the bma.
+		finalRunLength = lastRun.iLength >> 8;
+		}
+	TInt a;
+	TInt b;
+	TInt n;
+	TUint offset;
+	for (a=0; ((1<<a)<=aSize); ++a)
+		{
+		TInt alignsize=1<<a;
+		TInt alignmask=alignsize-1;
+		for (b=0; b<(1<<a); ++b)
+			{
+//			test.Printf(_L("size %d a=%d b=%d First\n"),aSize,a,b);
+			for (n=1; n<=aSize; ++n)
+				{
+				for (offset = 1; offset < (TUint)aSize; offset <<= 1)
+					{
+					TInt carry = 0;
+					TInt runLength;
+					TInt r1=pA->AllocAligned(n,a,b,EFalse, carry, runLength, offset);
+					TInt r2=AlignedFirstFitPos(rangeArray,aSize, n,a,b, offset);
+					if (r2 < 0 && pA->iSize == pA->iAvail)
+						{// Totally empty bmas return KErrOverflow on failure.
+						r2 = KErrOverflow;
+						}
+//					test.Printf(_L("ALA %d %d %d %d 0 = %d [%d]\n"),n,a,b,offset,r1,r2);
+					test( (r1<0) || ((r1+b)&alignmask)==0 );
+					test( (r1<0) || !pA->NotFree(r1,n));
+					test( (r1<0) || runLength >= n);
+					test_Equal(r2, r1);
+					}
+				}
+			}
+		}
+	for (a=0; ((1<<a)<=aSize); ++a)
+		{
+		TInt alignsize=1<<a;
+		TInt alignmask=alignsize-1;
+		for (b=0; b<(1<<a); ++b)
+			{
+//			test.Printf(_L("size %d a=%d b=%d Best\n"),aSize,a,b);
+			for (n=1; n<=aSize; ++n)
+				{// test for with offset=0 as that has screwed best fit in past.
+				for (offset = 0; offset < (TUint)aSize; offset <<= 1)
+					{
+					TInt carry = 0;
+					TInt runLength;
+					TInt r1=pA->AllocAligned(n,a,b,ETrue, carry, runLength, offset);
+					TInt r2=AlignedFirstFitPos(rangeArray,aSize, n,a,b, offset, ETrue);
+					if (pA->iSize == pA->iAvail)
+						{// Totally empty bmas return KErrOverflow always on best fit mode.
+						r2 = KErrOverflow;
+						}
+//					test.Printf(_L("ALA %d %d %d 1 = %d [%d]\n"),n,a,b,r1,r2);
+					test( (r1<0) || ((r1+b)&alignmask)==0 );
+					test( (r1<0) || !pA->NotFree(r1,n));
+					test( (r1<0) || runLength >= n);
+					test_Equal(r2, r1);
+					// No carry in so if run found then carry should be zero.
+					// If no run found then carry should set to the length of
+					// any run at the end of the bma minus the aligned offset.
+					TInt lost = 0;
+					TInt alignOffset = ((offset + b + alignmask) & ~alignmask) - b;
+					if (finalRunLength && offset &&	lastRun.iBase < alignOffset)
+						{// This search had started past the start of the final run
+						// so the final run length found will be shorter than its 
+						// total length.
+						if (alignOffset < aSize)
+							{
+							lost = Min(alignOffset - lastRun.iBase, finalRunLength);
+							}
+						else // alignedOffset starts past end of bma.
+							lost = finalRunLength;
+						}
+					test((r1>=0 && carry == 0) || carry == finalRunLength - lost);
+					offset = (offset)? offset : 1;
+					}
+				}
+			}
+		}
+	rangeArray.Close();
+	delete pA;
+	}
+
+void Clone(TAny* aDest, const TBitMapAllocator* aSrc)
+	{
+	TInt nmapw=(aSrc->iSize+31)>>5;
+	TInt memsz=sizeof(TBitMapAllocator)+(nmapw-1)*sizeof(TUint32);
+	Mem::Move(aDest,aSrc,memsz);
+	}
+
+void TestAllocConsecutive()
+	{
+	test.Printf(_L("TestAllocConsecutive\n"));
+	DoConsecTest(256, 0,4 , 20,8 , 38,1 , 58,6 , 65,10, 78,16 , 127,72, 222,19 , 244,12 , -1);
+	DoConsecTest(255, 0,2 , 3,2 , 6,3 , 10,3 , 14,5 , 20,5 , 26,7 , 34,7 , 42,11 , 54,11 , 66,13 , 80,37,
+																	118,19 , 138,23 , 162,47 , 254,1 , -1);
+	DoConsecTest(1023, 0,2 , 32,32 , 65,31 , 99,30 , 144,64 , 256,519 , 776,1, 778,245 , -1);
+
+	DoAlignedTest(256, 0,4 , 20,8 , 38,1 , 58,6 , 65,10, 78,16 , 127,72, 222,19 , 244,12 , -1);
+	DoAlignedTest(255, 0,2 , 3,2 , 6,3 , 10,3 , 14,5 , 20,5 , 26,7 , 34,7 , 42,11 , 54,11 , 66,13 , 80,37,
+																	118,19 , 138,23 , 162,47 , 254,1 , -1);
+	DoAlignedTest(1023, 0,2 , 32,32 , 65,31 , 99,30 , 144,64 , 256,519 , 776,1, 778,245 , -1);
+	// Test some completely free bmas
+	DoAlignedTest(255, 0,255, -1);
+	DoAlignedTest(256, 0,256, -1);
+	DoAlignedTest(1023, 0,1023, -1);
+	DoAlignedTest(1024, 0,1024, -1);
+	}
+
+void DoTestChain(const TBitMapAllocator& aBma, TInt aNumSplits, ...)
+	{
+	test.Printf(_L("DoTestChain %d %d\n"),aBma.iSize,aNumSplits);
+	VA_LIST list;
+	VA_START(list,aNumSplits);
+
+	TBmaList* pL=TBmaList::New(aBma,aNumSplits,list);
+	test(pL!=NULL);
+
+	TInt n;
+	for (n=1; n<=aBma.iSize; ++n)
+		{
+		TInt r1=aBma.AllocConsecutive(n,EFalse);
+		TInt r2=pL->AllocConsecutiveFF(n);
+//		test.Printf(_L("CHAIN C FF %d: r1=%d r2=%d\n"),n,r1,r2);
+		test(r1==r2);
+		}
+	for (n=1; n<=aBma.iSize; ++n)
+		{
+		TInt r1=aBma.AllocConsecutive(n,ETrue);
+		TInt r2=pL->AllocConsecutiveBF(n);
+//		test.Printf(_L("CHAIN C BF %d: r1=%d r2=%d\n"),n,r1,r2);
+		test(r1==r2);
+		}
+
+	TInt a;
+	for (a=0; ((1<<a)<=aBma.iSize); ++a)
+		{
+		for (n=1; n<=aBma.iSize; ++n)
+			{
+			if (n==264 && a==9)
+				{
+				++n;
+				--n;
+				}
+			TInt r1=aBma.AllocAligned(n,a,0,EFalse);
+			TInt r2=pL->AllocAlignedFF(n,a);
+//			test.Printf(_L("CHAIN A FF %d,%d: r1=%d r2=%d\n"),n,a,r1,r2);
+			test(r1==r2);
+			}
+		}
+	for (a=0; ((1<<a)<=aBma.iSize); ++a)
+		{
+		for (n=1; n<=aBma.iSize; ++n)
+			{
+			if (n==240 && a==3)
+				{
+				++n;
+				--n;
+				}
+			TInt r1=aBma.AllocAligned(n,a,0,ETrue);
+			TInt r2=pL->AllocAlignedBF(n,a);
+//			test.Printf(_L("CHAIN A BF %d,%d: r1=%d r2=%d\n"),n,a,r1,r2);
+			test(r1==r2);
+			}
+		}
+
+	delete pL;
+	}
+
+void TestChain()
+	{
+	test.Printf(_L("TestChain\n"));
+	TBitMapAllocator* pA;
+	pA=SetupBMA(1023, 0,2 , 32,32 , 65,31 , 99,30 , 144,64 , 256,519 , 776,1, 778,245 , -1);
+	test(pA!=NULL);
+	DoTestChain(*pA, 2, 300, 700);
+	DoTestChain(*pA, 3, 64, 301, 702);
+	delete pA;
+	pA=SetupBMA(512, 0,2 , 20,10 , 32,32 , 65,31 , 144,64 , 399,113 , -1);
+	test(pA!=NULL);
+	DoTestChain(*pA, 2, 256, 384);
+	DoTestChain(*pA, 3, 128, 256, 384);
+	DoTestChain(*pA, 3, 80, 208, 384);
+	DoTestChain(*pA, 3, 80, 208, 400);
+	delete pA;
+	}
+
+void TestBitOps()
+	{
+	test.Next(_L("Bit operations (32 bit)"));
+	test(__e32_find_ls1_32(0x00000000)==-1);
+	TInt i, j, k;
+	TInt count = 0;
+	for (i=0; i<=31; ++i)
+		test(__e32_find_ls1_32(1u<<i)==i);
+	TUint x = 0;
+	for (i=0; i<1000; ++i)
+		{
+		x = 69069*x + 41;
+		TInt bit = x&31;
+
+		x = 69069*x + 41;
+		TUint y = ((x|1)<<bit);
+
+		test(__e32_find_ls1_32(y) == bit);
+		}
+
+	test(__e32_find_ms1_32(0x00000000)==-1);
+	for (i=0; i<=31; ++i)
+		test(__e32_find_ms1_32(1u<<i)==i);
+	for (i=0; i<1000; ++i)
+		{
+		x = 69069*x + 41;
+		TInt bit = x&31;
+
+		x = 69069*x + 41;
+		TUint y = ((x|0x80000000u)>>bit);
+
+		test(__e32_find_ms1_32(y) == 31-bit);
+		}
+
+	test(__e32_bit_count_32(0)==0);
+	test(__e32_bit_count_32(0xffffffff)==32);
+	for (i=0; i<32; ++i)
+		{
+		TUint32 y = 0xffffffffu << i;
+		TUint32 z = 0xffffffffu >> i;
+		test(__e32_bit_count_32(y) == 32-i);
+		test(__e32_bit_count_32(z) == 32-i);
+		test(__e32_bit_count_32(~y) == i);
+		test(__e32_bit_count_32(~z) == i);
+		}
+	for (i=0; i<32; ++i)
+		for (j=0; j<32; ++j)
+			for (k=0; k<32; ++k)
+				{
+				TUint32 b0 = 1u<<i;
+				TUint32 b1 = 1u<<j;
+				TUint32 b2 = 1u<<k;
+				TUint32 y = b0 | b1 | b2;
+				TInt n;
+				if (i==j && j==k) n=1;
+				else if (i==j || j==k || i==k) n=2;
+				else n=3;
+				test(__e32_bit_count_32(y) == n);
+				test(__e32_bit_count_32(~y) == 32-n);
+				++count;
+				}
+	test.Printf(_L("%d iterations done\n"), count);
+	for (i=0; i<=31; ++i)
+		{
+		test(__e32_bit_count_32(0xaaaaaaaau<<i)==16-(i+1)/2);
+		test(__e32_bit_count_32(0x55555555u<<i)==16-i/2);
+		}
+	test(__e32_bit_count_32(0x33333333u)==16);
+	test(__e32_bit_count_32(0x88888888u)==8);
+
+	test.Next(_L("Bit operations (64 bit)"));
+	test(__e32_find_ls1_64(0x00000000)==-1);
+	for (i=0; i<=63; ++i)
+		{
+		TUint64 x = 1u;
+		x<<=i;
+		test(__e32_find_ls1_64(x)==i);
+		}
+	x = 487;
+	for (i=0; i<1000; ++i)
+		{
+		x = 69069*x + 41;
+		TInt bit = x&63;
+
+		x = 69069*x + 41;
+		TUint32 xl = x|1;
+		x = 69069*x + 41;
+		TUint32 xh = x;
+		TUint64 y = MAKE_TUINT64(xh,xl);
+		y <<= bit;
+		test(__e32_find_ls1_64(y) == bit);
+		}
+
+	test(__e32_find_ms1_64(0x00000000)==-1);
+	for (i=0; i<=63; ++i)
+		{
+		TUint64 x = 1u;
+		x<<=i;
+		test(__e32_find_ms1_64(x)==i);
+		}
+	x = 1039;
+	for (i=0; i<1000; ++i)
+		{
+		x = 69069*x + 41;
+		TInt bit = x&63;
+
+		x = 69069*x + 41;
+		TUint32 xl = x;
+		x = 69069*x + 41;
+		TUint32 xh = x|0x80000000u;
+		TUint64 y = MAKE_TUINT64(xh,xl);
+		y >>= bit;
+		test(__e32_find_ms1_64(y) == 63-bit);
+		}
+
+	test(__e32_bit_count_64(0)==0);
+	test(__e32_bit_count_64(MAKE_TUINT64(0x00000000,0xffffffff))==32);
+	test(__e32_bit_count_64(MAKE_TUINT64(0xffffffff,0x00000000))==32);
+	test(__e32_bit_count_64(MAKE_TUINT64(0xffffffff,0xffffffff))==64);
+	for (i=0; i<64; ++i)
+		{
+		TUint64 y = MAKE_TUINT64(0xffffffff,0xffffffff);
+		TUint64 z = y >> i;
+		y <<= i;
+		test(__e32_bit_count_64(y) == 64-i);
+		test(__e32_bit_count_64(z) == 64-i);
+		test(__e32_bit_count_64(~y) == i);
+		test(__e32_bit_count_64(~z) == i);
+		}
+	count = 0;
+	for (i=0; i<64; ++i)
+		for (j=0; j<64; ++j)
+			for (k=0; k<64; ++k)
+				{
+				TUint64 b0 = 1u;
+				TUint64 b1 = 1u;
+				TUint64 b2 = 1u;
+				b0 <<= i;
+				b1 <<= j;
+				b2 <<= k;
+				TUint64 y = b0 | b1 | b2;
+				TUint64 z = ~y;
+				TInt n;
+				if (i==j && j==k) n=1;
+				else if (i==j || j==k || i==k) n=2;
+				else n=3;
+				test(__e32_bit_count_64(y) == n);
+				test(__e32_bit_count_64(z) == 64-n);
+				++count;
+				}
+	test.Printf(_L("%d iterations done\n"), count);
+	for (i=0; i<64; ++i)
+		{
+		TUint64 y = MAKE_TUINT64(0xaaaaaaaa,0xaaaaaaaa);
+		TUint64 z = ~y;
+		test(__e32_bit_count_64(y<<i)==32-(i+1)/2);
+		test(__e32_bit_count_64(z<<i)==32-i/2);
+		}
+	test(__e32_bit_count_64(MAKE_TUINT64(0x33333333u,0x33333333u))==32);
+	test(__e32_bit_count_64(MAKE_TUINT64(0x88888888u,0x88888888u))==16);
+	}
+
+GLDEF_C TInt E32Main()
+	{
+	test.Title();
+	__UHEAP_MARK;
+	test.Start(_L("TBitMapAllocator tests"));
+
+	TestBitOps();
+
+	TestConstruct(3);
+	TestConstruct(29);
+	TestConstruct(256);
+	TestConstruct(487);
+
+	TestAlloc1(3);
+	TestAlloc1(29);
+	TestAlloc1(256);
+	TestAlloc1(181);
+
+	TestFree1(3);
+	TestFree1(29);
+	TestFree1(256);
+	TestFree1(181);
+
+	TestBlockAlloc(3);
+	TestBlockAlloc(29);
+	TestBlockAlloc(256);
+	TestBlockAlloc(179);
+
+	TestBlockFree(3);
+	TestBlockFree(31);
+	TestBlockFree(256);
+	TestBlockFree(149);
+
+	TestNotFree(3);
+	TestNotFree(31);
+	TestNotFree(256);
+	TestNotFree(149);
+
+	TestNotAllocated(3);
+	TestNotAllocated(31);
+	TestNotAllocated(256);
+	TestNotAllocated(149);
+
+	TestAllocList(3);
+	TestAllocList(31);
+	TestAllocList(128);
+	TestAllocList(149);
+
+	TestSelectiveFree(3);
+	TestSelectiveFree(31);
+	TestSelectiveFree(128);
+	TestSelectiveFree(149);
+
+	TestAllocConsecutive();
+
+	TestChain();
+
+	__UHEAP_MARKEND;
+	test.End();
+	return 0;
+	}