mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-27 06:43:32 +00:00
294 lines
8.8 KiB
C
294 lines
8.8 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
|
|
/*-----------------------------------------------------------------------------
|
|
XPMem.h
|
|
Cross-Platform Memory API
|
|
-----------------------------------------------------------------------------*/
|
|
#ifndef _XP_MEM_
|
|
#define _XP_MEM_
|
|
|
|
#include "xp_core.h"
|
|
|
|
#ifdef XP_MAC
|
|
#include "FlushAllocator.h"
|
|
#endif
|
|
|
|
#ifdef XP_WIN16
|
|
#include <malloc.h>
|
|
#endif
|
|
|
|
/* global free routine */
|
|
#define XP_FREEIF(obj) do { if(obj) { XP_FREE(obj); obj = 0; }} while(0)
|
|
|
|
/*-----------------------------------------------------------------------------
|
|
Allocating Structures
|
|
-----------------------------------------------------------------------------*/
|
|
|
|
#ifndef XP_MAC
|
|
|
|
#define XP_NEW( x ) (x*)malloc( sizeof( x ) )
|
|
#define XP_DELETE( p ) free( p )
|
|
|
|
#else /* XP_MAC */
|
|
|
|
#define XP_NEW( s ) ((s*)Flush_Allocate( sizeof(s), FALSE ) )
|
|
#define XP_DELETE( p ) Flush_Free( p )
|
|
|
|
#endif /* XP_MAC */
|
|
|
|
/*-----------------------------------------------------------------------------
|
|
Mallocs
|
|
NOTE: this uses the same malloc as the structure allocator so it is
|
|
ok and safe to use XP_DELETE or XP_FREE interchangeably!
|
|
-----------------------------------------------------------------------------*/
|
|
|
|
#ifdef XP_MAC
|
|
|
|
#define XP_ALLOC( s ) Flush_Allocate( s, FALSE )
|
|
#define XP_FREE( p ) Flush_Free( p )
|
|
#define XP_REALLOC( p , s ) Flush_Reallocate( p, s )
|
|
#define XP_CALLOC( n, s ) Flush_Allocate( (n)*(s), TRUE )
|
|
#define XP_NEW_ZAP( t ) ((t*)Flush_Allocate( sizeof(t), TRUE ) )
|
|
|
|
#else /* !XP_MAC */
|
|
/* normal win and unix */
|
|
|
|
#ifdef XP_WIN16
|
|
|
|
XP_BEGIN_PROTOS
|
|
extern void * WIN16_realloc(void * ptr, unsigned long size);
|
|
extern void * WIN16_malloc(unsigned long size);
|
|
XP_END_PROTOS
|
|
|
|
#define XP_REALLOC(ptr, size) WIN16_realloc(ptr, size)
|
|
#define XP_ALLOC(size) WIN16_malloc(size)
|
|
#else
|
|
|
|
#if defined(DEBUG) && defined(MOZILLA_CLIENT)
|
|
/* Check that we never allocate anything greater than 64K. If we ever tried,
|
|
Win16 would choke, and we'd like to find out about it on some other platform
|
|
(like, one where we have a working debugger). */
|
|
/* This code used to call abort. Unfortunately, on Windows, abort() doesn't
|
|
* go to the debugger. Instead, it silently quits the program.
|
|
* So use XP_ASSERT(FALSE) instead.
|
|
*/
|
|
|
|
#define XP_CHECK_ALLOC_SIZE(size) ((size) <= 0xFFFF ? size : (XP_ASSERT(FALSE), (size)))
|
|
#else
|
|
#define XP_CHECK_ALLOC_SIZE(size) size
|
|
#endif
|
|
|
|
#define XP_REALLOC(ptr, size) realloc(ptr, XP_CHECK_ALLOC_SIZE(size))
|
|
#define XP_ALLOC(size) malloc(XP_CHECK_ALLOC_SIZE(size))
|
|
#endif
|
|
|
|
|
|
#ifdef DEBUG
|
|
#define XP_CALLOC(num, sz) (((num)*(sz))<64000 ? calloc((num),(sz)) : (XP_ASSERT(FALSE), calloc((num),(sz))))
|
|
#else
|
|
#define XP_CALLOC(num, sz) calloc((num), (sz))
|
|
#endif
|
|
|
|
#define XP_FREE(ptr) free(ptr)
|
|
#define XP_NEW_ZAP(TYPE) ( (TYPE*) calloc (1, sizeof (TYPE) ) )
|
|
#endif /* !XP_MAC */
|
|
|
|
|
|
/* --------------------------------------------------------------------------
|
|
16-bit windows requires space allocated bigger than 32K to be of
|
|
type huge. For example:
|
|
|
|
int HUGE * foo = halloc(100000);
|
|
-----------------------------------------------------------------------------*/
|
|
|
|
/* There's no huge realloc because win16 doesn't have a hrealloc,
|
|
* and there's no API to discover the original buffer's size.
|
|
*/
|
|
#ifdef XP_WIN16
|
|
#define XP_HUGE __huge
|
|
#define XP_HUGE_ALLOC(SIZE) halloc(SIZE,1)
|
|
#define XP_HUGE_FREE(SIZE) hfree(SIZE)
|
|
#define XP_HUGE_MEMCPY(DEST, SOURCE, LEN) hmemcpy(DEST, SOURCE, LEN)
|
|
#else
|
|
#define XP_HUGE
|
|
#define XP_HUGE_ALLOC(SIZE) malloc(SIZE)
|
|
#define XP_HUGE_FREE(SIZE) free(SIZE)
|
|
#define XP_HUGE_MEMCPY(DEST, SOURCE, LEN) memcpy(DEST, SOURCE, LEN)
|
|
#endif
|
|
|
|
#define XP_HUGE_CHAR_PTR char XP_HUGE *
|
|
|
|
/*-----------------------------------------------------------------------------
|
|
Allocating Large Buffers
|
|
NOTE: this does not interchange with XP_ALLOC/XP_NEW/XP_FREE/XP_DELETE
|
|
-----------------------------------------------------------------------------*/
|
|
|
|
#if defined(XP_UNIX) || defined(XP_WIN32)
|
|
|
|
/* don't typedef this to void* unless you want obscure bugs... */
|
|
typedef unsigned long * XP_Block;
|
|
|
|
#define XP_ALLOC_BLOCK(SIZE) malloc ((SIZE))
|
|
#define XP_FREE_BLOCK(BLOCK) free ((BLOCK))
|
|
#ifdef XP_UNIXu
|
|
/* On SunOS, realloc(0,n) ==> 0 */
|
|
# define XP_REALLOC_BLOCK(BLOCK,SIZE) ((BLOCK) \
|
|
? realloc ((BLOCK), (SIZE)) \
|
|
: malloc ((SIZE)))
|
|
#else /* !XP_UNIX */
|
|
# define XP_REALLOC_BLOCK(BLOCK,SIZE) realloc ((BLOCK), (SIZE))
|
|
#endif /* !XP_UNIX */
|
|
#define XP_LOCK_BLOCK(PTR,TYPE,BLOCK) PTR = ((TYPE) (BLOCK))
|
|
#ifdef DEBUG
|
|
#define XP_UNLOCK_BLOCK(BLOCK) (void)BLOCK
|
|
#else
|
|
#define XP_UNLOCK_BLOCK(BLOCK)
|
|
#endif
|
|
#endif /* XP_UNIX || XP_WIN32 */
|
|
|
|
#if defined(XP_OS2)
|
|
|
|
/* don't typedef this to void* unless you want obscure bugs... */
|
|
typedef unsigned long * XP_Block;
|
|
|
|
#define XP_ALLOC_BLOCK(SIZE) malloc ((SIZE))
|
|
#define XP_FREE_BLOCK(BLOCK) free ((BLOCK))
|
|
# define XP_REALLOC_BLOCK(BLOCK,SIZE) realloc ((BLOCK), (SIZE))
|
|
#define XP_LOCK_BLOCK(PTR,TYPE,BLOCK) PTR = ((TYPE) (BLOCK))
|
|
#ifdef DEBUG
|
|
#define XP_UNLOCK_BLOCK(BLOCK) (void)BLOCK
|
|
#else
|
|
#define XP_UNLOCK_BLOCK(BLOCK)
|
|
#endif
|
|
|
|
#ifdef MCW_DEBUG
|
|
#include <stdlib.h>
|
|
#include <shmalloc.h>
|
|
#endif
|
|
#endif /* XP_OS2 */
|
|
|
|
#ifdef XP_WIN16
|
|
typedef unsigned char * XP_Block;
|
|
#define XP_ALLOC_BLOCK(SIZE) WIN16_malloc((SIZE))
|
|
#define XP_FREE_BLOCK(BLOCK) free ((BLOCK))
|
|
#define XP_REALLOC_BLOCK(BLOCK,SIZE) ((BLOCK) \
|
|
? WIN16_realloc ((BLOCK), (SIZE)) \
|
|
: WIN16_malloc ((SIZE)))
|
|
#define XP_LOCK_BLOCK(PTR,TYPE,BLOCK) PTR = ((TYPE) (BLOCK))
|
|
#ifdef DEBUG
|
|
#define XP_UNLOCK_BLOCK(BLOCK) (void)BLOCK
|
|
#else
|
|
#define XP_UNLOCK_BLOCK(BLOCK)
|
|
#endif
|
|
|
|
#endif /* XP_WIN16 */
|
|
|
|
|
|
#ifdef XP_MAC
|
|
|
|
typedef float* XP_Block;
|
|
#define XP_ALLOC_BLOCK( s ) ((XP_Block)Flush_Allocate( s, FALSE ) )
|
|
#define XP_FREE_BLOCK( b ) Flush_Free( b )
|
|
#define XP_REALLOC_BLOCK( b, s ) ((XP_Block)Flush_Reallocate( b, s ) )
|
|
#define XP_LOCK_BLOCK( p, t, b ) (p = ( t )( b ))
|
|
#define XP_UNLOCK_BLOCK( b )
|
|
|
|
#endif /* XP_MAC */
|
|
|
|
#define PA_Block XP_Block
|
|
#define PA_ALLOC(S) XP_ALLOC_BLOCK(S)
|
|
#define PA_FREE(B) XP_FREE_BLOCK(B)
|
|
#define PA_REALLOC(B,S) XP_REALLOC_BLOCK(B,S)
|
|
#define PA_LOCK(P,T,B) XP_LOCK_BLOCK(P,T,B)
|
|
#define PA_UNLOCK(B) XP_UNLOCK_BLOCK(B)
|
|
|
|
/*-----------------------------------------------------------------------------
|
|
Allocating many small structures.
|
|
|
|
If allocating many small structures, it is often more efficient to allocate
|
|
an array of a bunch of them, and maintain a free list of them. These
|
|
utilities do that for you.
|
|
|
|
You must provide a XP_AllocStructInfo structure which describes what
|
|
it is you are trying to allocate it. If statically defined, use the
|
|
XP_INITIALIZE_ALLOCSTRUCTINFO macro to initialize it; if you prefer to
|
|
initialize it at runtime, use the XP_InitAllocStructInfo() routine.
|
|
|
|
If you free everything you've ever allocated for a given
|
|
XP_AllocStructInfo, all the memory used will be freed. Or, if you're
|
|
*really sure* you're done with everything you've allocated for a given
|
|
XP_AllocStructInfo, you can just call the scary XP_FreeAllStructs() routine.
|
|
|
|
Don't mix calls to XP_AllocStruct/XP_FreeStruct and XP_ALLOC/XP_FREE !!!
|
|
|
|
XP_AllocStructZero is the same as XP_AllocStruct, but it also zeros out
|
|
the allocated memory.
|
|
|
|
An example:
|
|
|
|
struct foo {
|
|
int a;
|
|
int b;
|
|
};
|
|
|
|
static XP_AllocStructInfo FooAlloc =
|
|
{ XP_INITIALIZE_ALLOCSTRUCTINFO(sizeof(struct foo)) };
|
|
|
|
.
|
|
.
|
|
.
|
|
|
|
|
|
struct foo* ptr = (struct foo*) XP_AllocStruct(&FooAlloc);
|
|
.
|
|
.
|
|
.
|
|
XP_FreeStruct(FooAlloc, ptr);
|
|
-----------------------------------------------------------------------------*/
|
|
|
|
typedef struct XP_AllocStructInfo {
|
|
int size;
|
|
void* curchunk;
|
|
int leftinchunk;
|
|
void* firstfree;
|
|
void* firstchunk;
|
|
int numalloced;
|
|
} XP_AllocStructInfo;
|
|
|
|
|
|
#define XP_INITIALIZE_ALLOCSTRUCTINFO(size) ((size + sizeof(void*) - 1) / sizeof(void*)) * sizeof(void*)
|
|
|
|
|
|
XP_BEGIN_PROTOS
|
|
|
|
void XP_InitAllocStructInfo(XP_AllocStructInfo* info, int size);
|
|
void* XP_AllocStruct(XP_AllocStructInfo* info);
|
|
void* XP_AllocStructZero(XP_AllocStructInfo* info);
|
|
void XP_FreeStruct(XP_AllocStructInfo* info, void* ptr);
|
|
void XP_FreeAllStructs(XP_AllocStructInfo* info); /* Danger! Use with care! */
|
|
|
|
XP_END_PROTOS
|
|
|
|
|
|
|
|
|
|
#endif /* _XP_MEM_ */
|
|
|
|
|