480 lines
16 KiB
C
480 lines
16 KiB
C
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/***
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*heap.h - Heap code include file
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*
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* Copyright (c) 1988-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Contains information needed by the C library heap code.
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*
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* [Internal]
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*
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*Revision History:
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* 05-16-89 JCR Module created
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* 06-02-89 GJF Removed naming conflict
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* 06-29-89 JCR Completely new for "New heap - rev 2"
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* 06-29-89 GJF Added _HDRSIZE, fixed some minor glitches.
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* 06-29-89 GJF Added _BLKSIZE(), fixed more minor bugs.
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* 06-30-89 GJF Changed several macros to operate on a pointer to a
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* descriptor, rather than a descriptor itself.
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* 06-30-89 JCR Corrected/updated several macros
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* 07-06-89 JCR Added region support, misc improvements, etc.
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* 07-07-89 GJF Minor bug in _ROUND() macro
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* 07-07-89 JCR Added _DUMMY status
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* 07-19-89 GJF Removed _PBACKPTR macro
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* 07-20-89 JCR Region routine prototypes, _HEAPFIND values
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* 07-21-89 JCR #define _heap_growsize to _amblksiz for compatibility
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* 07-25-89 GJF Added prototypes for calloc, free and malloc
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* 07-28-89 GJF Added prototype for _msize
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* 08-28-89 JCR Added _HEAP_COALESCE value
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* 10-30-89 GJF Fixed copyright
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* 11-03-89 GJF Added _DISTTOBNDRY(), _NEXTSEGBNDRY() macros and
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* prototypes for _flat_malloc(), _heap_advance_rover(),
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* _heap_split_block() functions
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* 11-07-89 GJF Added _SEGSIZE_, added prototype for _heap_search()
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* restored function prototype for_heap_grow_region()
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* 11-08-89 JCR Added non-pow2 rounding macro
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* 11-10-89 JCR Added _heap_free_region prototype
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* 11-10-89 GJF Added prototypes and macros for multi-thread support
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* 11-16-89 JCR If DEBUG defined include <assert.h>, added sanity check
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* 12-13-89 GJF Removed prototypes duplicated in malloc.h
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* 12-20-89 GJF Removed plastdesc from _heap_desc_ struct, removed
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* _DELHEAP and _ADDHEAP macros (unused and wrong), added
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* explicit _cdecl to function prototypes
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* 01-08-89 GJF Use assert macro from assertm.h instead of assert.h
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* 03-01-90 GJF Added #ifndef _INC_HEAP and #include <cruntime.h>
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* stuff. Also, removed some unused DEBUG286 stuff.
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* 03-22-90 GJF Replaced _cdecl with _CALLTYPE1 in prototypes.
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* 07-25-90 SBM Replaced <assertm.h> by <assert.h>
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* 08-13-90 SBM Added casts to macros for clean compiles at -W3
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* 12-28-90 SRW Fixed _heap_split_block prototype to match code
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* 12-28-90 SRW Changed _HEAP_GROWSIZE to be 0x10000 [_WIN32_]
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* 03-05-91 GJF Added decl for _heap_resetsize, removed proto for
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* _heap_advance_rover (both conditioned on _OLDROVER_
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* not being #define-d).
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* 03-13-91 GJF Made _HEAP_GROWSIZE 32K for [_CRUISER_].
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* 04-09-91 PNT Added _MAC_ definitions
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* 08-20-91 JCR C++ and ANSI naming
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* 03-30-92 DJM POSIX support.
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* 08-06-92 GJF Function calling type and variable type macros.
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* 01-21-93 GJF Removed support for C6-386's _cdecl.
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* 04-06-93 SKS Replace _CRTAPI1/2 with __cdecl, _CRTVAR1 with nothing
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* 04-16-93 SKS Change _HEAP_REGIONSIZE from 4 MB to 16 KB.
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* Low memory environments such as Win32S cannot commit
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* memory without actually allocating it.
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* 04-20-93 SKS Add new constant _HEAP_MAXREGIONSIZE.
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* 04-26-93 SKS Constants _HEAP_REGIONSIZE and _HEAP_MAXREGIONSIZE
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* split to handle both small and large memory modes
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* _HEAP_MAXREGIONSIZE becomes variable "_heap_maxregsize"
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* 09-01-93 GJF Merged NT SDK and Cuda version (this include file is
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* not used for the winheap\*.* heap manager).
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* 12-09-93 GJF Added _GRANULARITY and defined _HDRSIZE in terms of it.
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* 12-13-93 SKS Add _heapused_lk(). Move here declarations of
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* _heap_descpages and _HEAP_EMPTYLIST_SIZE.
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* 03-02-94 GJF Deleted _GETEMPTY() macro and prototype for
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* _heap_grow_emptylist() (now static). Added prototype
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* for __getempty(). Changed _heap_split_block() return
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* type.
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* 03-31-94 GJF Made declarations of:
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* _heap_descpages
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* _heap_maxregsize
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* _heap_regions
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* _heap_regionsize
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* _heap_resetsize
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* conditional on ndef DLL_FOR_WIN32S. Also, made the
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* definition of _heap_growsize conditional in the same
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* manner and conditionally include win32s.h.
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* 07-29-94 GJF Page are twice as big on the DEC Alpha.
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* 08-04-94 GJF DEC Alpha needs 8 byte alignment too.
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* 09-06-94 CFW Remove _CRTHEAP_ switch.
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* 09-21-94 SKS Fix typo: no leading _ on "DLL_FOR_WIN32S"
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* 10-09-94 BWT PPC changes from John Morgan.
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* 11-02-94 SKS Change _HEAP_MAXREGIONSIZE_S from 256 KB to 16 MB
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* (same as _HEAP_MAXREGIONSIZE_L) for users who want a
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* LOT of memory under Win32s. This is reasonable now
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* that Win32s supports reserved but uncommitted memory.
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* 12-05-94 CFW Fix debug new handler support.
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* 02-06-95 GJF Removed some of the Mac-merge changes.
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* 02-06-95 CFW Remove assert.h, DEBUG -> _DEBUG
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* 02-14-95 CFW Clean up Mac merge.
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* 03-29-95 CFW Add error message to internal headers.
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* 04-24-95 CFW Add heap hook.
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* 12-14-95 JWM Add "#pragma once".
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* 04-23-96 SKS Return type of _heap_init changed from void to int.
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* 02-21-97 GJF Cleaned out obsolete support for DLL_FOR_WIN32S.
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* Replaced defined(_M_MPPC) || defined(_M_M68K) with
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* defined(_MAC). Also, detab-ed.
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* 10-07-97 RDL Added IA64.
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* 05-17-99 PML Remove all Macintosh support.
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* 07-07-99 AWB Changes for 64-bit size_t. (v-aborni)
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* 10-06-99 PML Add _W64 modifier to types which are 32 bits in Win32,
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* 64 bits in Win64.
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*
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****/
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#if _MSC_VER > 1000 /*IFSTRIP=IGN*/
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#pragma once
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#endif
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#ifndef _INC_HEAP
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#define _INC_HEAP
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#ifndef _CRTBLD
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/*
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* This is an internal C runtime header file. It is used when building
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* the C runtimes only. It is not to be used as a public header file.
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*/
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#error ERROR: Use of C runtime library internal header file.
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#endif /* _CRTBLD */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <cruntime.h>
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/* Define __cdecl for non-Microsoft compilers */
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#if ( !defined(_MSC_VER) && !defined(__cdecl) )
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#define __cdecl
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#endif
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/*
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* Heap block descriptor
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*/
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struct _block_descriptor {
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struct _block_descriptor *pnextdesc; /* ptr to next descriptor */
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void *pblock; /* ptr to memory block */
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};
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#define _BLKDESC struct _block_descriptor
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#define _PBLKDESC struct _block_descriptor *
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/*
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* Useful constants
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*/
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/*
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* Unit of allocation. All allocations are of size n * _GRANULARITY. Note
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* that _GRANULARITY must be a power of 2, or it cannot be used with the
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* _ROUND2 macro.
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*/
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#if defined(_M_MRX000) || defined(_M_ALPHA) || defined(_M_PPC) || defined(_M_IA64)
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#define _GRANULARITY 8
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#else
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#define _GRANULARITY 4
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#endif
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/*
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* Size of the header in a memory block. Note that we must have
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* sizeof(void *) <= _HDRSIZE so the header is big enough to hold a pointer
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* to the descriptor.
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*/
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#define _HDRSIZE 1 * _GRANULARITY
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/* _heapchk/_heapset parameter */
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#define _HEAP_NOFILL 0x7FFFFFF
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/*
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* Descriptor status values
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*/
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#define _INUSE 0
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#define _FREE 1
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#define _DUMMY 2
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#if _INUSE != 0 /*IFSTRIP=IGN*/
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#error *** Heap code assumes _INUSE value is 0! ***
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#endif
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/*
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* Macros for manipulating heap memory block descriptors
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* stat = one of the status values
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* addr = user-visible address of a heap block
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*/
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#define _STATUS_MASK 0x3 /* last 2 bits are status */
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#define _ADDRESS(pdesc) ( (void *) ((unsigned)((pdesc)->pblock) & \
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(~_STATUS_MASK)) )
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#define _STATUS(pdesc) ( (unsigned) ((unsigned)((pdesc)->pblock) & \
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_STATUS_MASK) )
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#define _SET_INUSE(pdesc) ( pdesc->pblock = (void *) \
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((unsigned)_ADDRESS(pdesc) | _INUSE) )
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#define _SET_FREE(pdesc) ( pdesc->pblock = (void *) \
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((unsigned)_ADDRESS(pdesc) | _FREE) )
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#define _SET_DUMMY(pdesc) ( pdesc->pblock = (void *) \
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((unsigned)_ADDRESS(pdesc) | _DUMMY) )
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#define _IS_INUSE(pdesc) ( _STATUS(pdesc) == _INUSE )
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#define _IS_FREE(pdesc) ( _STATUS(pdesc) == _FREE )
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#define _IS_DUMMY(pdesc) ( _STATUS(pdesc) == _DUMMY )
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#define _BLKSIZE(pdesc) ( (unsigned) ( \
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(char *)_ADDRESS(pdesc->pnextdesc) - \
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(char *)_ADDRESS(pdesc) - _HDRSIZE ) )
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#define _MEMSIZE(pdesc) ( (char *)_ADDRESS(pdesc->pnextdesc) - \
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(char *)_ADDRESS(pdesc) )
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#define _BACKPTR(addr) ( *(_PBLKDESC*)((char *)(addr) - _HDRSIZE) )
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#define _CHECK_PDESC(pdesc) ( (*(_PBLKDESC*) (_ADDRESS(pdesc))) == pdesc )
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#define _CHECK_BACKPTR(addr) ( ((char *)(_BACKPTR(addr)->pblock) + _HDRSIZE) \
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== addr)
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/*
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* Heap descriptor
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*/
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struct _heap_desc_ {
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_PBLKDESC pfirstdesc; /* pointer to first descriptor */
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_PBLKDESC proverdesc; /* rover pointer */
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_PBLKDESC emptylist; /* pointer to empty list */
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_BLKDESC sentinel; /* Sentinel block for end of heap list */
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};
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extern struct _heap_desc_ _heap_desc;
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/*
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* Region descriptor and heap grow data
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*/
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struct _heap_region_ {
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void * _regbase; /* base address of region */
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unsigned _currsize; /* current size of region */
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unsigned _totalsize; /* total size of region */
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};
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#define _heap_growsize _amblksiz
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#ifndef _OLDROVER_
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extern unsigned int _heap_resetsize;
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#endif /* _OLDROVER_ */
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extern unsigned int _heap_regionsize;
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extern unsigned int _heap_maxregsize;
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extern struct _heap_region_ _heap_regions[];
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extern void ** _heap_descpages;
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#ifdef _M_ALPHA
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#define _PAGESIZE_ 0x2000 /* one page */
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#else
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#define _PAGESIZE_ 0x1000 /* one page */
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#endif
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#define _SEGSIZE_ 0x10000 /* one segment (i.e., 64 Kb) */
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#define _HEAP_REGIONMAX 0x40 /* Max number of regions: 64 */
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/* For small memory systems: */
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#define _HEAP_REGIONSIZE_S 0x4000 /* Initial region size (16K) */
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#define _HEAP_MAXREGSIZE_S 0x1000000 /* Maximum region size (16M) */
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/* For large memory systems: */
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#define _HEAP_REGIONSIZE_L 0x100000 /* Initial region size (1M) */
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#define _HEAP_MAXREGSIZE_L 0x1000000 /* Maximum region size (16M) */
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#define _HEAP_GROWSIZE 0x10000 /* Default grow increment (64K) */
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#define _HEAP_GROWMIN _PAGESIZE_ /* Minimum grow inc (1 page) */
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#define _HEAP_GROWSTART _PAGESIZE_ /* Startup grow increment */
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#define _HEAP_COALESCE -1 /* Coalesce heap value */
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#define _HEAP_EMPTYLIST_SIZE (1 * _PAGESIZE_)
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/*
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* Values returned by _heap_findaddr() routine
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*/
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#define _HEAPFIND_EXACT 0 /* found address exactly */
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#define _HEAPFIND_WITHIN 1 /* address is within a block */
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#define _HEAPFIND_BEFORE -1 /* address before beginning of heap */
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#define _HEAPFIND_AFTER -2 /* address after end of heap */
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#define _HEAPFIND_EMPTY -3 /* address not found: empty heap */
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/*
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* Arguments to _heap_param
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*/
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#define _HP_GETPARAM 0 /* get heap parameter value */
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#define _HP_SETPARAM 1 /* set heap parameter value */
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#define _HP_AMBLKSIZ 1 /* get/set _amblksiz value (aka */
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#define _HP_GROWSIZE _HP_AMBLKSIZ /* _heap_growsize */
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#define _HP_RESETSIZE 2 /* get/set _heap_resetsize value */
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/*
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* Macros to round numbers
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*
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* _ROUND2 = rounds a number up to a power of 2
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* _ROUND = rounds a number up to any other numer
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*
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* n = number to be rounded
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* pow2 = must be a power of two value
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* r = any number
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*/
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#define _ROUND2(n,pow2) \
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( ( n + pow2 - 1) & ~(pow2 - 1) )
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#define _ROUND(n,r) \
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( ( (n/r) + ((n%r)?1:0) ) * r)
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/*
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Macros for accessing heap descriptor lists:
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_PUTEMPTY(x) = Puts an empty heap desc on the empty list
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(x = _PBLKDESC = pointer to heap block descriptor)
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*/
|
||
|
|
|
||
|
|
#ifdef _DEBUG
|
||
|
|
|
||
|
|
#define _PUTEMPTY(x) \
|
||
|
|
{ \
|
||
|
|
(x)->pnextdesc = _heap_desc.emptylist; \
|
||
|
|
\
|
||
|
|
(x)->pblock = NULL; \
|
||
|
|
\
|
||
|
|
_heap_desc.emptylist = (x); \
|
||
|
|
}
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
#define _PUTEMPTY(x) \
|
||
|
|
{ \
|
||
|
|
(x)->pnextdesc = _heap_desc.emptylist; \
|
||
|
|
\
|
||
|
|
_heap_desc.emptylist = (x); \
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Macros for finding the next 64 Kb boundary from a pointer
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define _NXTSEGBNDRY(p) ((void *)((unsigned)(p) & 0xffff0000 + 0x10000))
|
||
|
|
|
||
|
|
#define _DISTTOBNDRY(p) ((unsigned)(0x10000 - (0x0000ffff & (unsigned)(p))))
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Define size_t type (if necessary)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#if !defined(_W64)
|
||
|
|
#if !defined(__midl) && (defined(_X86_) || defined(_M_IX86)) && _MSC_VER >= 1300 /*IFSTRIP=IGN*/
|
||
|
|
#define _W64 __w64
|
||
|
|
#else
|
||
|
|
#define _W64
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef _SIZE_T_DEFINED
|
||
|
|
#ifdef _WIN64
|
||
|
|
typedef unsigned __int64 size_t;
|
||
|
|
#else
|
||
|
|
typedef _W64 unsigned int size_t;
|
||
|
|
#endif
|
||
|
|
#define _SIZE_T_DEFINED
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Prototypes
|
||
|
|
*/
|
||
|
|
|
||
|
|
void * __cdecl _nh_malloc(size_t, int);
|
||
|
|
void * __cdecl _heap_alloc(size_t);
|
||
|
|
void * __cdecl _flat_malloc(size_t);
|
||
|
|
_PBLKDESC __getempty(void);
|
||
|
|
void __cdecl _heap_abort(void);
|
||
|
|
int __cdecl _heap_addblock(void *, unsigned int);
|
||
|
|
|
||
|
|
#ifdef _OLDROVER_
|
||
|
|
void __cdecl _heap_advance_rover(void);
|
||
|
|
#endif /* _OLDROVER_ */
|
||
|
|
|
||
|
|
void __cdecl _heap_free_region(int);
|
||
|
|
int __cdecl _heap_findaddr(void *, _PBLKDESC *);
|
||
|
|
int __cdecl _heap_grow(unsigned int);
|
||
|
|
int __cdecl _heap_grow_region(unsigned, size_t);
|
||
|
|
int __cdecl _heap_init(void);
|
||
|
|
|
||
|
|
#ifndef _OLDROVER_
|
||
|
|
int __cdecl _heap_param(int, int, void *);
|
||
|
|
#endif /* _OLDROVER_ */
|
||
|
|
|
||
|
|
_PBLKDESC __cdecl _heap_search(unsigned size);
|
||
|
|
_PBLKDESC __cdecl _heap_split_block(_PBLKDESC, size_t);
|
||
|
|
|
||
|
|
#ifdef _DEBUG
|
||
|
|
void __cdecl _heap_print_all(void);
|
||
|
|
void __cdecl _heap_print_regions(void);
|
||
|
|
void __cdecl _heap_print_desc(void);
|
||
|
|
void __cdecl _heap_print_emptylist(void);
|
||
|
|
void __cdecl _heap_print_heaplist(void);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Prototypes and macros for multi-thread support
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifdef _MT
|
||
|
|
|
||
|
|
void __cdecl _free_lk(void *);
|
||
|
|
size_t __cdecl _msize_lk(void *);
|
||
|
|
size_t __cdecl _heapused_lk(size_t *pUsed, size_t *pFree);
|
||
|
|
|
||
|
|
#ifdef _DEBUG
|
||
|
|
void __cdecl _heap_print_regions_lk(void);
|
||
|
|
void __cdecl _heap_print_desc_lk(void);
|
||
|
|
void __cdecl _heap_print_emptylist_lk(void);
|
||
|
|
void __cdecl _heap_print_heaplist_lk(void);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#else /* ndef _MT */
|
||
|
|
|
||
|
|
#define _free_lk(p) free(p)
|
||
|
|
#define _msize_lk(p) _msize(p)
|
||
|
|
|
||
|
|
#ifdef _DEBUG
|
||
|
|
#define _heap_print_regions_lk() _heap_print_regions()
|
||
|
|
#define _heap_print_desc_lk() _heap_print_desc()
|
||
|
|
#define _heap_print_emptylist_lk() _heap_print_emptylist()
|
||
|
|
#define _heap_print_heaplist_lk() _heap_print_heaplist()
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* _MT */
|
||
|
|
|
||
|
|
#ifdef HEAPHOOK
|
||
|
|
#ifndef _HEAPHOOK_DEFINED
|
||
|
|
/* hook function type */
|
||
|
|
typedef int (__cdecl * _HEAPHOOK)(int, size_t, void *, void *);
|
||
|
|
#define _HEAPHOOK_DEFINED
|
||
|
|
#endif /* _HEAPHOOK_DEFINED */
|
||
|
|
|
||
|
|
extern _HEAPHOOK _heaphook;
|
||
|
|
#endif /* HEAPHOOK */
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* _INC_HEAP */
|