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/* -*- mode: C++; tab-width: 4 -*- */
/* ===================================================================== *\
Copyright (c) 1999-2001 Palm, Inc. or its subsidiaries.
All rights reserved.
This file is part of the Palm OS Emulator.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
\* ===================================================================== */
#ifndef EmPalmHeap_h
#define EmPalmHeap_h
#include <vector>
class SessionFile;
class EmPalmChunk;
class EmPalmMPT;
class EmPalmHeap;
typedef vector<EmPalmChunk> EmPalmChunkList;
typedef vector<EmPalmMPT> EmPalmMPTList;
typedef vector<EmPalmHeap> EmPalmHeapList;
class EmStream;
EmStream& operator << (EmStream&, const EmPalmChunk&);
EmStream& operator >> (EmStream&, EmPalmChunk&);
EmStream& operator << (EmStream&, const EmPalmMPT&);
EmStream& operator >> (EmStream&, EmPalmMPT&);
EmStream& operator << (EmStream&, const EmPalmHeap&);
EmStream& operator >> (EmStream&, EmPalmHeap&);
class EmPalmHeap
{
// ===== Static member functions =====
public:
static void Initialize (void);
static void Reset (void);
static void Save (SessionFile&);
static void Load (SessionFile&);
static void Dispose (void);
static EmPalmHeapList::const_iterator
GetHeapListBegin (void);
static EmPalmHeapList::const_iterator
GetHeapListEnd (void);
static const EmPalmHeap*
GetHeapByID (UInt16);
static const EmPalmHeap*
GetHeapByPtr (emuptr);
static const EmPalmHeap*
GetHeapByPtr (MemPtr);
static const EmPalmHeap*
GetHeapByHdl (MemHandle);
static void MemInitHeapTable (UInt16 cardNo);
static void MemHeapInit (UInt16 heapID,
Int16 numHandles,
Boolean initContents);
static void MemHeapCompact (UInt16 heapID,
EmPalmChunkList* = NULL);
static void MemHeapFreeByOwnerID (UInt16 heapID,
UInt16 ownerID,
EmPalmChunkList* = NULL);
static void MemHeapScramble (UInt16 heapID,
EmPalmChunkList* = NULL);
static void MemChunkNew (UInt16 heapID,
MemPtr,
UInt16 attributes,
EmPalmChunkList* = NULL);
static void MemChunkFree (EmPalmHeap* heap,
EmPalmChunkList* = NULL);
static void MemPtrNew (MemPtr,
EmPalmChunkList* = NULL);
static void MemPtrResize (MemPtr,
EmPalmChunkList* = NULL);
static void MemHandleNew (MemHandle,
EmPalmChunkList* = NULL);
static void MemHandleResize (MemHandle,
EmPalmChunkList* = NULL);
static void MemHandleFree (EmPalmHeap* heap,
EmPalmChunkList* = NULL);
static void MemLocalIDToLockedPtr (MemPtr,
EmPalmChunkList* = NULL);
static void MemHandleLock (MemHandle,
EmPalmChunkList* = NULL);
static void MemHandleUnlock (MemHandle,
EmPalmChunkList* = NULL);
static void MemHandleResetLock (MemHandle,
EmPalmChunkList* = NULL);
static void MemPtrResetLock (MemPtr,
EmPalmChunkList* = NULL);
static void MemPtrUnlock (MemPtr,
EmPalmChunkList* = NULL);
static void MemPtrSetOwner (MemPtr,
EmPalmChunkList* = NULL);
static void ValidateAllHeaps (void);
static MemPtr DerefHandle (MemHandle h);
static MemHandle RecoverHandle (MemPtr p);
private:
static void AddHeap (UInt16 heapID);
static long GetHeapVersion (emuptr heapHdr);
private:
static EmPalmHeapList fgHeapList;
// ===== Object member functions =====
public:
EmPalmHeap (void);
EmPalmHeap (UInt16 heapID);
EmPalmHeap (emuptr heapHdr);
EmPalmHeap (const EmPalmHeap&);
~EmPalmHeap (void);
EmPalmChunkList::const_iterator
GetChunkListBegin (void) const;
EmPalmChunkList::const_iterator
GetChunkListEnd (void) const;
const EmPalmChunk* GetChunkReferencedBy (MemHandle) const;
const EmPalmChunk* GetChunkContaining (emuptr) const;
const EmPalmChunk* GetChunkBodyContaining (emuptr) const;
EmPalmMPTList::const_iterator
GetMPTListBegin (void) const;
EmPalmMPTList::const_iterator
GetMPTListEnd (void) const;
Bool Tracked (void) const;
Bool ReadOnly (void) const;
Bool Dynamic (void) const;
emuptr Start (void) const { return fHeapHdrStart; }
emuptr End (void) const { return fHeapHdrStart + fSize; }
uint32 Size (void) const { return End () - Start (); }
Bool Contains (emuptr p) const { return ((p >= Start ()) && (p < End ())); }
emuptr HeaderStart (void) const { return fHeapHdrStart; }
emuptr HeaderEnd (void) const { return fHeapHdrStart + fHeapHdrSize; }
uint32 HeaderSize (void) const { return HeaderEnd () - HeaderStart (); }
Bool HeaderContains (emuptr p) const { return ((p >= HeaderStart ()) && (p < HeaderEnd ())); }
emuptr MptStart (void) const { return fHeapHdrStart + fHeapHdrSize; }
emuptr MptEnd (void) const { return fFirstChunk; }
uint32 MptSize (void) const { return MptEnd () - MptStart (); }
Bool MptContains (emuptr p) const { return ((p >= MptStart ()) && (p < MptEnd ())); }
emuptr DataStart (void) const { return fFirstChunk; }
emuptr DataEnd (void) const { return fHeapHdrStart + fSize; }
uint32 DataSize (void) const { return DataEnd () - DataStart (); }
Bool DataContains (emuptr p) const { return ((p >= DataStart ()) && (p < DataEnd ())); }
enum
{
kVersionUnknown,
kVersion1, // 1 = original
kVersion2, // 2 = >64K
kVersion3, // 3 = has free chunk list
kVersion4 // 4 = has free master pointer list
};
long Version (void) const { return fVersion; }
long HeapID (void) const { return fHeapID; }
long ChunkHeaderSize (void) const { return fChunkHdrSize; }
void Validate (void);
private:
void GetHeapHeaderInfo (UInt16 heapID);
void GetHeapHeaderInfo (emuptr heapHdr);
void ResyncAll (EmPalmChunkList* delta);
void ResyncMPTList (void);
void ResyncChunkList (EmPalmChunkList* delta);
void ResyncPtr (MemPtr,
EmPalmChunkList* delta);
void ResyncHdl (MemHandle,
EmPalmChunkList* delta);
void GenerateDeltas (const EmPalmChunkList& oldList,
const EmPalmChunkList& newList,
EmPalmChunkList& delta);
private:
friend EmStream& operator << (EmStream&, const EmPalmHeap&);
friend EmStream& operator >> (EmStream&, EmPalmHeap&);
long fVersion;
long fHeapID;
emuptr fHeapHdrStart;
uint32 fHeapHdrSize; // Up to the master pointer table struct
emuptr fFirstChunk; // Just after the end of the master pointer table
UInt16 fFlags;
UInt32 fSize;
UInt32 fFirstFree;
UInt16 fChunkHdrSize;
EmPalmChunkList fChunkList;
EmPalmMPTList fMPTList;
};
// Handy macros for dealing with the rather unwieldy iteration functions.
#define ITERATE_HEAPS(iter1, iter2) \
EmPalmHeapList::const_iterator iter1 = EmPalmHeap::GetHeapListBegin (); \
EmPalmHeapList::const_iterator iter2 = EmPalmHeap::GetHeapListEnd (); \
while (iter1 != iter2)
#define ITERATE_MPTS(heap, iter1, iter2) \
EmPalmMPTList::const_iterator iter1 = (heap).GetMPTListBegin (); \
EmPalmMPTList::const_iterator iter2 = (heap).GetMPTListEnd (); \
while (iter1 != iter2)
#define ITERATE_CHUNKS(heap, iter1, iter2) \
EmPalmChunkList::const_iterator iter1 = (heap).GetChunkListBegin (); \
EmPalmChunkList::const_iterator iter2 = (heap).GetChunkListEnd (); \
while (iter1 != iter2)
class EmPalmMPT
{
public:
EmPalmMPT (void);
EmPalmMPT (const EmPalmHeap&,
emuptr mptHdr);
EmPalmMPT (const EmPalmMPT&);
~EmPalmMPT (void);
void Validate (const EmPalmHeap& heap) const;
emuptr Start (void) const { return fMptHdrStart; }
emuptr End (void) const { return fMptHdrStart + fSize; }
uint32 Size (void) const { return End () - Start (); }
Bool Contains (emuptr p) const { return ((p >= Start ()) && (p < End ())); }
emuptr HeaderStart (void) const { return fMptHdrStart; }
emuptr HeaderEnd (void) const { return fMptHdrStart + fMptHdrSize; }
uint32 HeaderSize (void) const { return HeaderEnd () - HeaderStart (); }
Bool HeaderContains (emuptr p) const { return ((p >= HeaderStart ()) && (p < HeaderEnd ())); }
emuptr TableStart (void) const { return fMptHdrStart + fMptHdrSize; }
emuptr TableEnd (void) const { return fMptHdrStart + fSize; }
uint32 TableSize (void) const { return TableEnd () - TableStart (); }
Bool TableContains (emuptr p) const { return ((p >= TableStart ()) && (p < TableEnd ())); }
enum
{
kVersionUnknown,
kVersion1, // 1 = original
kVersion2 // 2 = >64K
};
long Version (void) const { return fVersion; }
UInt32 NextTableOffset (void) const { return fNextTblOffset; }
private:
void GetMPTInfo (const EmPalmHeap&,
emuptr mptHdr);
private:
friend EmStream& operator << (EmStream&, const EmPalmMPT&);
friend EmStream& operator >> (EmStream&, EmPalmMPT&);
long fVersion;
emuptr fMptHdrStart;
uint32 fMptHdrSize; // Up to the array of master pointers
uint32 fSize; // Entire size
UInt16 fNumEntries;
UInt32 fNextTblOffset;
};
class EmPalmChunk
{
public:
EmPalmChunk (void);
EmPalmChunk (const EmPalmHeap&,
emuptr chunkHdr);
EmPalmChunk (const EmPalmChunk&);
~EmPalmChunk (void);
void Validate (const EmPalmHeap& heap) const;
Bool CompareForDelta (const EmPalmChunk& lhs) const;
emuptr Start (void) const { return fChunkHdrStart; }
emuptr End (void) const { return fChunkHdrStart + fSize; }
uint32 Size (void) const { return End () - Start (); }
Bool Contains (emuptr p) const { return ((p >= Start ()) && (p < End ())); }
emuptr HeaderStart (void) const { return fChunkHdrStart; }
emuptr HeaderEnd (void) const { return fChunkHdrStart + fChunkHdrSize; }
uint32 HeaderSize (void) const { return HeaderEnd () - HeaderStart (); }
Bool HeaderContains (emuptr p) const { return ((p >= HeaderStart ()) && (p < HeaderEnd ())); }
emuptr BodyStart (void) const { return fChunkHdrStart + fChunkHdrSize; }
emuptr BodyEnd (void) const { return fChunkHdrStart + fSize - fSizeAdj; }
uint32 BodySize (void) const { return BodyEnd () - BodyStart (); }
Bool BodyContains (emuptr p) const { return ((p >= BodyStart ()) && (p < BodyEnd ())); }
emuptr TrailerStart (void) const { return fChunkHdrStart + fSize - fSizeAdj; }
emuptr TrailerEnd (void) const { return fChunkHdrStart + fSize; }
uint32 TrailerSize (void) const { return TrailerEnd () - TrailerStart (); }
Bool TrailerContains (emuptr p) const { return ((p >= TrailerStart ()) && (p < TrailerEnd ())); }
enum
{
kVersionUnknown,
kVersion1, // 1 = original
kVersion2 // 2 = >64K
};
long Version (void) const { return fVersion; }
Bool Free (void) const { return fFree; }
uint8 LockCount (void) const { return fLockCount; }
uint8 Owner (void) const { return fOwner; }
int32 HOffset (void) const { return fHOffset; }
private:
void GetChunkInfo (const EmPalmHeap&,
emuptr chunkHdr);
private:
friend EmStream& operator << (EmStream&, const EmPalmChunk&);
friend EmStream& operator >> (EmStream&, EmPalmChunk&);
long fVersion;
emuptr fChunkHdrStart;
uint32 fChunkHdrSize;
bool fFree; // set if free chunk
bool fMoved; // used by MemHeapScramble
bool fUnused2; // unused
bool fUnused3; // unused
uint8 fSizeAdj; // size adjustment
uint32 fSize; // actual size of chunk
uint8 fLockCount; // lock count
uint8 fOwner; // owner ID
int32 fHOffset; // signed handle offset/2
// used in free chunks to point to next free chunk
};
#endif /* EmPalmHeap_h */
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