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873 lines
22 KiB
873 lines
22 KiB
//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1994.
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//
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// File: heap.hxx
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//
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// Contents: Heap code headers
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//
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// Classes: CHeap
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//
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// History: 29-Mar-94 PhilipLa Created
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// 05-Feb-95 KentCe Use Win95 Shared Heap.
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// 10-Apr095 HenryLee Added global LUID
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// 10-May-95 KentCe Defer Heap Destruction to the last
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// process detach.
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//
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//----------------------------------------------------------------------------
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#ifndef __HEAP_HXX__
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#define __HEAP_HXX__
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#include <smblock.hxx>
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#include <memdebug.hxx>
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#include <msf.hxx>
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#include <df32.hxx>
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//Space to reserve for heap.
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const ULONG MINHEAPGROWTH = 4096;
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const ULONG INITIALHEAPSIZE = 16384;
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#ifdef MULTIHEAP
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#include <ntpsapi.h>
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class CPerContext;
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#endif
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//+-------------------------------------------------------------------------
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//
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// Class: CLockDfMutex
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//
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// Purpose: Simple class to guarantee that a DfMutex is unlocked
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//
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// History: 29-Apr-95 DonnaLi Created
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//
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//--------------------------------------------------------------------------
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class CLockDfMutex
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{
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public:
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CLockDfMutex(CDfMutex& dmtx);
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~CLockDfMutex(void);
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private:
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CDfMutex& _dmtx;
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};
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//+-------------------------------------------------------------------------
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//
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// Member: CLockDfMutex::CLockDfMutex
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//
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// Synopsis: Get mutex
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//
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// Arguments: [dmtx] -- mutex to get
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//
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// History: 29-Apr-95 DonnaLi Created
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//
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//--------------------------------------------------------------------------
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inline CLockDfMutex::CLockDfMutex(CDfMutex& dmtx) : _dmtx(dmtx)
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{
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_dmtx.Take(DFM_TIMEOUT);
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}
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//+-------------------------------------------------------------------------
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//
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// Member: CLockDfMutex::~CLockDfMutex
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//
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// Synopsis: Release the mutex
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//
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// History: 29-Apr-95 DonnaLi Created
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//
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//--------------------------------------------------------------------------
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inline CLockDfMutex::~CLockDfMutex(void)
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{
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_dmtx.Release();
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}
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//
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// Take advantage of Windows 95 Shared Heap.
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//
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#if !defined(_CHICAGO_)
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//+---------------------------------------------------------------------------
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//
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// Class: CBlockPreHeader
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//
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// Purpose: Required header fields for a block
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//
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// History: 29-Mar-94 PhilipLa Created
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//
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//----------------------------------------------------------------------------
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class CBlockPreHeader
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{
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protected:
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SIZE_T _ulSize; //Size of block
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BOOL _fFree; //TRUE if block is free
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};
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//+---------------------------------------------------------------------------
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//
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// Class: CBlockHeader
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//
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// Purpose: Fields required for free blocks but overwritten for
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// allocated blocks.
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//
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// History: 29-Mar-94 PhilipLa Created
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//
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//----------------------------------------------------------------------------
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class CBlockHeader: public CBlockPreHeader
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{
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public:
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inline SIZE_T GetSize(void) const;
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inline BOOL IsFree(void) const;
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inline SIZE_T GetNext(void) const;
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inline void SetSize(SIZE_T ulSize);
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inline void SetFree(void);
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inline void ResetFree(void);
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inline void SetNext(SIZE_T ulNext);
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private:
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SIZE_T _ulNext; //Pointer to next block
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};
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//+---------------------------------------------------------------------------
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//
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// Member: CBlockHeader::GetSize, public
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//
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// Synopsis: Returns the size of the block
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//
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// History: 30-Mar-94 PhilipLa Created
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//
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//----------------------------------------------------------------------------
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inline SIZE_T CBlockHeader::GetSize(void) const
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{
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return _ulSize;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CBlockHeader::IsFree, public
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//
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// Synopsis: Returns free state of block
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//
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// History: 30-Mar-94 PhilipLa Created
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//
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//----------------------------------------------------------------------------
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inline BOOL CBlockHeader::IsFree(void) const
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{
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memAssert (_fFree == TRUE || _fFree == FALSE); // check for corruption
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return _fFree;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CBlockHeader::GetNext, public
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//
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// Synopsis: Return next offset
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//
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// History: 30-Mar-94 PhilipLa Created
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//
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//----------------------------------------------------------------------------
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inline SIZE_T CBlockHeader::GetNext(void) const
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{
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return _ulNext;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CBlockHeader::SetSize, public
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//
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// Synopsis: Set size of block
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//
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// History: 30-Mar-94 PhilipLa Created
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//
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//----------------------------------------------------------------------------
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inline void CBlockHeader::SetSize(SIZE_T ulSize)
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{
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_ulSize = ulSize;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CBlockHeader::SetFree, public
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//
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// Synopsis: Set this block to free
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//
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// History: 30-Mar-94 PhilipLa Created
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//
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//----------------------------------------------------------------------------
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inline void CBlockHeader::SetFree(void)
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{
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_fFree = TRUE;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CBlockHeader::ResetFree, public
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//
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// Synopsis: Set this block to !free
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//
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// History: 30-Mar-94 PhilipLa Created
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//
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//----------------------------------------------------------------------------
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inline void CBlockHeader::ResetFree(void)
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{
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_fFree = FALSE;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CBlockHeader::SetNext, public
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//
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// Synopsis: Set next offset
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//
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// History: 30-Mar-94 PhilipLa Created
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//
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//----------------------------------------------------------------------------
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inline void CBlockHeader::SetNext(SIZE_T ulNext)
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{
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_ulNext = ulNext;
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}
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const ULONG CBLOCKMIN = ((sizeof(CBlockHeader) & 7)
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? sizeof(CBlockHeader) +
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(8 - (sizeof(CBlockHeader) & 7))
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: sizeof(CBlockHeader));
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//+---------------------------------------------------------------------------
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//
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// Class: CHeapHeader
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//
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// Purpose: Header information for shared memory heap
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//
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// Interface:
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//
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// History: 30-Mar-94 PhilipLa Created
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//
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// Notes: The size of this structure must be a multiple of 8 bytes.
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//
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//----------------------------------------------------------------------------
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class CHeapHeader
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{
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public:
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inline SIZE_T GetFirstFree(void) const;
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inline void SetFirstFree(SIZE_T ulNew);
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inline BOOL IsCompacted(void) const;
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inline void SetCompacted(void);
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inline void ResetCompacted(void);
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inline void ResetAllocedBlocks(void);
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inline SIZE_T IncrementAllocedBlocks(void);
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inline SIZE_T DecrementAllocedBlocks(void);
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inline SIZE_T GetAllocedBlocks(void);
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inline DFLUID IncrementLuid(void);
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inline void ResetLuid(void);
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#if DBG == 1
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SIZE_T _ulAllocedBytes;
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SIZE_T _ulFreeBytes;
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SIZE_T _ulFreeBlocks;
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#endif
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private:
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SIZE_T _ulFirstFree;
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SIZE_T _ulAllocedBlocks;
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BOOL _fIsCompacted;
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DFLUID _dfLuid;
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#if DBG == 1
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SIZE_T ulPad;
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#endif
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};
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//+---------------------------------------------------------------------------
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//
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// Member: CHeapHeader::GetFirstFree, public
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//
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// Synopsis: Return first free information
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//
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// History: 30-Mar-94 PhilipLa Created
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//
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//----------------------------------------------------------------------------
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inline SIZE_T CHeapHeader::GetFirstFree(void) const
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{
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return _ulFirstFree;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CHeapHeader::SetFirstFree, public
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//
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// Synopsis: Set first free information
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//
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// History: 30-Mar-94 PhilipLa Created
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//
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//----------------------------------------------------------------------------
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inline void CHeapHeader::SetFirstFree(SIZE_T ulNew)
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{
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_ulFirstFree = ulNew;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CHeapHeader::IsCompacted, public
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//
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// Synopsis: Return TRUE if heap is compacted
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//
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// History: 30-Mar-94 PhilipLa Created
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//
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//----------------------------------------------------------------------------
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inline BOOL CHeapHeader::IsCompacted(void) const
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{
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return _fIsCompacted;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CHeapHeader::SetCompacted, public
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//
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// Synopsis: Set compacted bit
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//
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// History: 30-Mar-94 PhilipLa Created
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//
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//----------------------------------------------------------------------------
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inline void CHeapHeader::SetCompacted(void)
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{
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_fIsCompacted = TRUE;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CHeapHeader::ResetCompacted, public
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//
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// Synopsis: Reset compacted bit
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//
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// History: 30-Mar-94 PhilipLa Created
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//
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//----------------------------------------------------------------------------
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inline void CHeapHeader::ResetCompacted(void)
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{
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_fIsCompacted = FALSE;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CHeapHeader::IncrementLuid, public
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//
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// Synopsis: Increment the global LUID
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//
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// History: 06-Apr-95 HenryLee Created
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//
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//----------------------------------------------------------------------------
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inline ULONG CHeapHeader::IncrementLuid()
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{
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return ++_dfLuid;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CHeapHeader::ResetLuid, public
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//
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// Synopsis: Increment the global LUID
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//
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// History: 06-Apr-95 HenryLee Created
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//
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//----------------------------------------------------------------------------
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inline void CHeapHeader::ResetLuid()
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{
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_dfLuid = LUID_BASE; // some LUIDs are reserved
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}
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#ifdef MULTIHEAP
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extern DFLUID gs_dfluid; // task memory support
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extern INT gs_iSharedHeaps; // number ofshared heaps
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#endif
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#else // define(_CHICAGO_)
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extern HANDLE gs_hSharedHeap; // hSharedHeap Handle for Win95.
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extern DFLUID gs_dfluid; // shared docfile LUID
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#endif // !define(_CHICAGO_)
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//+---------------------------------------------------------------------------
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//
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// Class: CSmAllocator
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//
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// Purpose: Shared memory heap implementation
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//
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// History: 29-Mar-94 PhilipLa Created
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// 05-Feb-95 KentCe Use Win95 Shared Heap.
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//
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//----------------------------------------------------------------------------
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class CSmAllocator: public IMalloc
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{
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public:
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inline CSmAllocator();
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inline ~CSmAllocator();
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STDMETHOD_(ULONG,AddRef) ( void );
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STDMETHOD_(ULONG,Release) ( void );
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STDMETHOD(QueryInterface) ( REFIID riid, void ** ppv );
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STDMETHOD_(void*,Alloc) ( SIZE_T cb );
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STDMETHOD_(void *,Realloc) ( void *pvCurrent, SIZE_T cbNeeded );
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STDMETHOD_(void,Free) ( void *pvMemToFree );
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STDMETHOD_(SIZE_T,GetSize) ( void * pv );
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STDMETHOD_(void,HeapMinimize) ( void );
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STDMETHOD_(int,DidAlloc) ( void * pv );
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inline SCODE Sync(void);
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inline DFLUID IncrementLuid(void);
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#if !defined(MULTIHEAP)
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SCODE Init ( LPWSTR pszName );
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#else
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SCODE Init ( ULONG ulHeapName, BOOL fUnmarshal );
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#endif
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inline void * GetBase(void);
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// This function is equivalent to Free above, except that is does
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// not attempt to first acquire the mutex. It should be used ONLY
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// when the calling function guarantees to already have the mutex.
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void FreeNoMutex (void * pv);
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#if !defined(MULTIHEAP)
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inline CDfMutex * GetMutex (void);
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#endif
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#ifdef MULTIHEAP
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void SetState (CSharedMemoryBlock *psmb, BYTE * pbBase,
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ULONG ulHeapName, CPerContext ** ppcPrev,
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CPerContext *ppcOwner);
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void GetState (CSharedMemoryBlock **ppsmb, BYTE ** ppbBase,
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ULONG *pulHeapName);
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inline const ULONG GetHeapName ();
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SCODE Uninit ();
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inline const ULONG GetHeapSize () { return _cbSize; };
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#if DBG == 1
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void PrintAllocatedBlocks(void);
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#endif
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#endif
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private:
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inline void DoFree (void *pv);
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#if !defined(MULTIHEAP)
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CDfMutex _dmtx;
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#endif
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//
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// Take advantage of Windows 95 Shared Heap.
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//
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#if !defined(_CHICAGO_)
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CBlockHeader * FindBlock(SIZE_T cb, CBlockHeader **ppbhPrev);
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inline CHeapHeader *GetHeader(void);
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inline CBlockHeader * GetAddress(SIZE_T ulOffset) const;
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inline ULONG GetOffset(CBlockHeader *pbh) const;
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inline SCODE Reset(void);
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#if DBG == 1
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void PrintFreeBlocks(void);
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#endif
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#ifdef MULTIHEAP
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CSharedMemoryBlock *_psmb;
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BYTE *_pbBase;
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ULONG _cbSize;
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CPerContext * _ppcOwner;
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ULONG _ulHeapName;
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ULONG _cRefs; // yes, this object has a lifetime now
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#else
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CSharedMemoryBlock _smb;
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BYTE *_pbBase;
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SIZE_T _cbSize;
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#endif // MULTIHEAP
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#else // defined(_CHICAGO_)
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HANDLE m_hSharedHeap;
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#endif // !defined(_CHICAGO_)
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};
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#ifdef MULTIHEAP
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extern CSmAllocator g_SmAllocator; // single-threaded allocator
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extern CSharedMemoryBlock g_smb; //performance optimization
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extern ULONG g_ulHeapName;
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extern CSmAllocator& GetTlsSmAllocator(); // all other threads
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extern TEB * g_pteb;
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#define g_smAllocator (GetTlsSmAllocator())
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//+---------------------------------------------------------------------------
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//
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// Class: CErrorSmAllocator
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//
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// Synopsis: returned by GetTlsSmAllocator for out of memory failures
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//
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// History: 02-May-1996 HenryLee Created
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//
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//----------------------------------------------------------------------------
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class CErrorSmAllocator : public CSmAllocator
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{
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public:
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STDMETHOD_(void*,Alloc) (SIZE_T cb) { return NULL; };
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STDMETHOD_(void*,Realloc) (void* pv, SIZE_T cb) { return NULL; };
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STDMETHOD_(void,Free) (void *pv) { return; };
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STDMETHOD_(SIZE_T,GetSize) (void *pv) { return 0; };
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STDMETHOD_(void,HeapMinimize) () { return; };
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STDMETHOD_(int,DidAlloc) (void *pv) { return FALSE; };
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SCODE Init (ULONG ul, BOOL f) { return STG_E_INSUFFICIENTMEMORY; };
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SCODE Sync (void) { return STG_E_INSUFFICIENTMEMORY; };
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};
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extern CErrorSmAllocator g_ErrorSmAllocator;
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extern IMalloc * g_pTaskAllocator;
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#else
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extern CSmAllocator g_smAllocator;
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#endif
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extern CRITICAL_SECTION g_csScratchBuffer;
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//+---------------------------------------------------------------------------
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//
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// Member: CSmAllocator::CSmAllocator, public
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//
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// Synopsis: Constructor
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//
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// History: 29-Mar-94 PhilipLa Created
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// 05-Feb-95 KentCe Use Win95 Shared Heap.
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//
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//----------------------------------------------------------------------------
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inline CSmAllocator::CSmAllocator(void)
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#if !defined(_CHICAGO_)
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#ifdef MULTIHEAP
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: _cbSize(0), _pbBase(NULL), _cRefs(1), _ulHeapName(0),
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_psmb(NULL), _ppcOwner(NULL)
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#else
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: _cbSize(0)
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#endif // MULTIHEAP
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#else
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: m_hSharedHeap(NULL)
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#endif
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{
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#if !defined(MULTIHEAP)
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InitializeCriticalSection(&g_csScratchBuffer);
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#ifdef COORD
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InitializeCriticalSection(&g_csResourceList);
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#endif
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#endif // MULTIHEAP
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}
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|
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//+---------------------------------------------------------------------------
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//
|
|
// Member: CSmAllocator::~CSmAllocator, public
|
|
//
|
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// Synopsis: Destructor
|
|
//
|
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// History: 29-Mar-94 PhilipLa Created
|
|
// 05-Feb-95 KentCe Use Win95 Shared Heap.
|
|
// 10-May-95 KentCe Defer Heap Destruction to the last
|
|
// process detach.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
inline CSmAllocator::~CSmAllocator(void)
|
|
{
|
|
#if !defined(MULTIHEAP)
|
|
DeleteCriticalSection(&g_csScratchBuffer);
|
|
#ifdef COORD
|
|
DeleteCriticalSection(&g_csResourceList);
|
|
#endif
|
|
#endif // MULTIHEAP
|
|
}
|
|
|
|
//+---------------------------------------------------------------------------
|
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//
|
|
// Member: CSmAllocator::Sync, public
|
|
//
|
|
// Synopsis: Sync memory to global state.
|
|
//
|
|
// Arguments: None.
|
|
//
|
|
// Returns: Appropriate status code
|
|
//
|
|
// History: 29-Mar-94 PhilipLa Created
|
|
// 05-Feb-95 KentCe Use Win95 Shared Heap.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
inline SCODE CSmAllocator::Sync(void)
|
|
{
|
|
SCODE sc = S_OK;
|
|
#if !defined(_CHICAGO_)
|
|
#if !defined(MULTIHEAP)
|
|
if (!_smb.IsSynced())
|
|
{
|
|
CLockDfMutex lckdmtx(_dmtx);
|
|
|
|
sc = _smb.Sync();
|
|
_cbSize = _smb.GetSize();
|
|
}
|
|
#else
|
|
if (_psmb)
|
|
{
|
|
if (!_psmb->IsSynced())
|
|
{
|
|
sc = _psmb->Sync();
|
|
}
|
|
_cbSize = _psmb->GetSize();
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
return sc;
|
|
}
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: CSmAllocator::IncrementLuid, public
|
|
//
|
|
// Synopsis: Increments the global LUID
|
|
//
|
|
// Arguments: None.
|
|
//
|
|
// Returns: Appropriate status code
|
|
//
|
|
// History: 06-Apr-95 HenryLee Created
|
|
//----------------------------------------------------------------------------
|
|
|
|
inline DFLUID CSmAllocator::IncrementLuid(void)
|
|
{
|
|
#if !defined(MULTIHEAP)
|
|
CLockDfMutex lckdmx(_dmtx);
|
|
#endif
|
|
|
|
#ifdef _CHICAGO_
|
|
//
|
|
// On Chicago, we merely increment the globally available
|
|
// LUID to the next value.
|
|
//
|
|
return ++gs_dfluid;
|
|
#else
|
|
return _pbBase ? GetHeader()->IncrementLuid() :
|
|
InterlockedIncrement((LONG*)&gs_dfluid);
|
|
#endif
|
|
|
|
}
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: CSmAllocator::GetBase, public
|
|
//
|
|
// Synopsis: Return pointer to base of heap
|
|
//
|
|
// History: 29-Mar-94 PhilipLa Created
|
|
// 05-Feb-95 KentCe Use Win95 Shared Heap.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
inline void * CSmAllocator::GetBase(void)
|
|
{
|
|
#if defined(_CHICAGO_)
|
|
return NULL;
|
|
#else
|
|
return _pbBase;
|
|
#endif
|
|
}
|
|
|
|
#if !defined(MULTIHEAP)
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: CSmAllocator::GetMutex, public
|
|
//
|
|
// Synopsis: Return a pointer to the Mutex
|
|
//
|
|
// History: 19-Jul-95 SusiA Created
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
inline CDfMutex * CSmAllocator::GetMutex(void)
|
|
{
|
|
return &_dmtx;
|
|
}
|
|
#endif
|
|
|
|
//
|
|
// Take advantage of Windows 95 Shared Heap.
|
|
//
|
|
#if !defined(_CHICAGO_)
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: CSmAllocator::GetAddress, private
|
|
//
|
|
// Synopsis: Returns an address given an offset from the base
|
|
//
|
|
// Arguments: [ulOffset] -- Offset to convert to address
|
|
//
|
|
// History: 29-Mar-94 PhilipLa Created
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
inline CBlockHeader * CSmAllocator::GetAddress(SIZE_T ulOffset) const
|
|
{
|
|
return (ulOffset == 0) ? NULL : (CBlockHeader *)(_pbBase + ulOffset);
|
|
}
|
|
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: CSmAllocator::GetOffset
|
|
//
|
|
// Synopsis: Returns a byte offset from the base given a pointer
|
|
//
|
|
// Arguments: [pbh] -- Pointer to convert to offset
|
|
//
|
|
// History: 29-Mar-94 PhilipLa Created
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
inline ULONG CSmAllocator::GetOffset(CBlockHeader *pbh) const
|
|
{
|
|
memAssert((BYTE *)pbh >= _pbBase && (BYTE*)pbh < _pbBase + _cbSize);
|
|
return (ULONG)((ULONG_PTR)pbh - (ULONG_PTR)_pbBase);
|
|
}
|
|
|
|
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: CSmAllocator::GetHeader, private
|
|
//
|
|
// Synopsis: Return pointer to CHeapHeader for this heap
|
|
//
|
|
// History: 30-Mar-94 PhilipLa Created
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
inline CHeapHeader * CSmAllocator::GetHeader(void)
|
|
{
|
|
return (CHeapHeader *)_pbBase;
|
|
}
|
|
|
|
#ifdef MULTIHEAP
|
|
//+-------------------------------------------------------------------------
|
|
//
|
|
// Member: CSmAllocator::HeapName, public
|
|
//
|
|
// Synopsis: Return the luid part of the shared heap name
|
|
//
|
|
// History: 30-Nov-95 HenryLee Created
|
|
//
|
|
//--------------------------------------------------------------------------
|
|
inline const ULONG CSmAllocator::GetHeapName()
|
|
{
|
|
return _ulHeapName;
|
|
}
|
|
#endif
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: CHeapHeader::ResetAllocedBlocks, public
|
|
//
|
|
// Synopsis: Reset the allocated block counter
|
|
//
|
|
// History: 04-Apr-94 PhilipLa Created
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
inline void CHeapHeader::ResetAllocedBlocks(void)
|
|
{
|
|
_ulAllocedBlocks = 0;
|
|
}
|
|
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: CHeapHeader::IncrementAllocedBlocks, public
|
|
//
|
|
// Synopsis: Increment the allocated block count
|
|
//
|
|
// History: 04-Apr-94 PhilipLa Created
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
inline SIZE_T CHeapHeader::IncrementAllocedBlocks(void)
|
|
{
|
|
return ++_ulAllocedBlocks;
|
|
}
|
|
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: CHeapHeader::DecrementAllocedBlocks, public
|
|
//
|
|
// Synopsis: Decrement the allocated block count
|
|
//
|
|
// History: 04-Apr-94 PhilipLa Created
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
inline SIZE_T CHeapHeader::DecrementAllocedBlocks(void)
|
|
{
|
|
return --_ulAllocedBlocks;
|
|
}
|
|
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: CHeapHeader::GetAllocedBlocks, public
|
|
//
|
|
// Synopsis: Return the allocated block count
|
|
//
|
|
// History: 04-Apr-94 PhilipLa Created
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
inline SIZE_T CHeapHeader::GetAllocedBlocks(void)
|
|
{
|
|
return _ulAllocedBlocks;
|
|
}
|
|
|
|
#endif // !defined(_CHICAGO_)
|
|
|
|
#endif // #ifndef __HEAP_HXX__
|
|
|