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/*---------------------------------------------------------------------------*
* pmalloc.h *
* *
* Copyright 2007, 2008 Nuance Communciations, Inc. *
* *
* Licensed under the Apache License, Version 2.0 (the 'License'); *
* you may not use this file except in compliance with the License. *
* *
* You may obtain a copy of the License at *
* http://www.apache.org/licenses/LICENSE-2.0 *
* *
* Unless required by applicable law or agreed to in writing, software *
* distributed under the License is distributed on an 'AS IS' BASIS, *
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
* See the License for the specific language governing permissions and *
* limitations under the License. *
* *
*---------------------------------------------------------------------------*/
/* xalloc.h internal header */
#ifndef _PMALLOC
#define _PMALLOC
#ifdef __cplusplus
extern "C"
{
#endif
#ifndef _STD
#define _STD
#endif
#define _STD_BEGIN
#define _STD_END
typedef unsigned int psize_t;
#ifndef DKoffsetof
#define DKoffsetof(T, member) ((_STD psize_t)&(((T *)0)->member))
#endif
/* storage alignment properties */
#define DK_AUPBND 1U /* even-byte boundaries (2^^1) */
#define DK_ADNBND 1U
#define DK_MEMBND 2U /* cts : 4 byte malloc boundaries (3 ==> 8 byte) */
#ifndef NULL
#define NULL 0
#endif
_STD_BEGIN
/* macros */
#define M_MASK ((1 << DK_MEMBND) - 1) /* rounds all sizes */
#define CELL_OFF ((DKoffsetof(_Cell, _Next) + M_MASK) & ~M_MASK)
#define SIZE_BLOCK 256 /* minimum block size, power of 2 */
#define SIZE_CELL ((sizeof (_Cell) + M_MASK) & ~M_MASK)
/* type definitions */
typedef struct _Cell
{
psize_t _Size; /* CELL_OFF <= SIZE_CELL <= _Size */
struct _Cell *_Next; /* reused if CELL_OFF < SIZE_CELL */
}
_Cell;
typedef struct
{
_Cell **_Plast; /* null, or where to resume malloc scan */
_Cell *_Head; /* null, or lowest addressed free cell */
}
_Altab;
/* declarations */
void *_Getmem(psize_t);
extern _Altab _Aldata; /* free list initially empty */
#if _INTELx86
/* #define _PTR_NORM(p) (void __huge *)(p) should have worked */
#define _PTR_NORM(p) \
( (((unsigned long)(p) & 0xFFFF0000L)>>12) \
+ ((unsigned long)(p) & 0xFFFFL) )
#else
#define _PTR_NORM(p) (p)
#endif
#if DEBUG
int _OK_Cell(_Cell *p);
int _OK_Altab(_Altab *p);
void _UPD_Altab(psize_t d_heap, psize_t d_alloc, psize_t d_free);
#else
#define _OK_Cell(p) (void)0
#define _OK_Altab(p) (void)0
#define _UPD_Altab(d_heap, d_alloc, d_free) (void)0
#endif /*DEBUG*/
_STD_END
/* function prototypes */
void PortMallocSetPoolSize(psize_t size);
psize_t PortMallocGetPoolSize(void);
int PortMallocGetMaxMemUsed(void);
void PortMallocInit(void);
void PortMallocTerm(void);
void *(PortMalloc)(psize_t size_arg);
void(PortFree)(void *ptr);
#ifdef __cplusplus
} /* end extern "C" */
#endif
#endif /* _PMALLOC */
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