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php-src/Zend/zend_alloc.h
Peter Kokot 8d3f8ca12a Remove unused Git attributes ident 
The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
user who changed it.

In Git this functionality is different and can be done with Git attribute
ident. These need to be defined manually for each file in the
.gitattributes file and are afterwards replaced with 40-character
hexadecimal blob object name which is based only on the particular file
contents.

This patch simplifies handling of $Id$ keywords by removing them since
they are not used anymore.
2018-07-25 00:53:25 +02:00

413 lines
19 KiB
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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2018 Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
| Dmitry Stogov <dmitry@zend.com> |
+----------------------------------------------------------------------+
*/
#ifndef ZEND_ALLOC_H
#define ZEND_ALLOC_H
#include <stdio.h>
#include "../TSRM/TSRM.h"
#include "zend.h"
#ifndef ZEND_MM_ALIGNMENT
# define ZEND_MM_ALIGNMENT Z_L(8)
# define ZEND_MM_ALIGNMENT_LOG2 Z_L(3)
#elif ZEND_MM_ALIGNMENT < 4
# undef ZEND_MM_ALIGNMENT
# undef ZEND_MM_ALIGNMENT_LOG2
# define ZEND_MM_ALIGNMENT Z_L(4)
# define ZEND_MM_ALIGNMENT_LOG2 Z_L(2)
#endif
#define ZEND_MM_ALIGNMENT_MASK ~(ZEND_MM_ALIGNMENT - Z_L(1))
#define ZEND_MM_ALIGNED_SIZE(size) (((size) + ZEND_MM_ALIGNMENT - Z_L(1)) & ZEND_MM_ALIGNMENT_MASK)
#define ZEND_MM_ALIGNED_SIZE_EX(size, alignment) \
(((size) + ((alignment) - Z_L(1))) & ~((alignment) - Z_L(1)))
typedef struct _zend_leak_info {
void *addr;
size_t size;
const char *filename;
const char *orig_filename;
uint32_t lineno;
uint32_t orig_lineno;
} zend_leak_info;
#if ZEND_DEBUG
typedef struct _zend_mm_debug_info {
size_t size;
const char *filename;
const char *orig_filename;
uint32_t lineno;
uint32_t orig_lineno;
} zend_mm_debug_info;
# define ZEND_MM_OVERHEAD ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info))
#else
# define ZEND_MM_OVERHEAD 0
#endif
BEGIN_EXTERN_C()
ZEND_API char* ZEND_FASTCALL zend_strndup(const char *s, size_t length) ZEND_ATTRIBUTE_MALLOC;
ZEND_API void* ZEND_FASTCALL _emalloc(size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC) ZEND_ATTRIBUTE_MALLOC ZEND_ATTRIBUTE_ALLOC_SIZE(1);
ZEND_API void* ZEND_FASTCALL _safe_emalloc(size_t nmemb, size_t size, size_t offset ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC) ZEND_ATTRIBUTE_MALLOC;
ZEND_API void* ZEND_FASTCALL _safe_malloc(size_t nmemb, size_t size, size_t offset) ZEND_ATTRIBUTE_MALLOC;
ZEND_API void ZEND_FASTCALL _efree(void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
ZEND_API void* ZEND_FASTCALL _ecalloc(size_t nmemb, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC) ZEND_ATTRIBUTE_MALLOC ZEND_ATTRIBUTE_ALLOC_SIZE2(1,2);
ZEND_API void* ZEND_FASTCALL _erealloc(void *ptr, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC) ZEND_ATTRIBUTE_ALLOC_SIZE(2);
ZEND_API void* ZEND_FASTCALL _erealloc2(void *ptr, size_t size, size_t copy_size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC) ZEND_ATTRIBUTE_ALLOC_SIZE(2);
ZEND_API void* ZEND_FASTCALL _safe_erealloc(void *ptr, size_t nmemb, size_t size, size_t offset ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
ZEND_API void* ZEND_FASTCALL _safe_realloc(void *ptr, size_t nmemb, size_t size, size_t offset);
ZEND_API char* ZEND_FASTCALL _estrdup(const char *s ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC) ZEND_ATTRIBUTE_MALLOC;
ZEND_API char* ZEND_FASTCALL _estrndup(const char *s, size_t length ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC) ZEND_ATTRIBUTE_MALLOC;
ZEND_API size_t ZEND_FASTCALL _zend_mem_block_size(void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
#include "zend_alloc_sizes.h"
/* _emalloc() & _efree() specialization */
#if !ZEND_DEBUG && defined(HAVE_BUILTIN_CONSTANT_P)
# define _ZEND_BIN_ALLOCATOR_DEF(_num, _size, _elements, _pages, x, y) \
ZEND_API void* ZEND_FASTCALL _emalloc_ ## _size(void) ZEND_ATTRIBUTE_MALLOC;
ZEND_MM_BINS_INFO(_ZEND_BIN_ALLOCATOR_DEF, x, y)
ZEND_API void* ZEND_FASTCALL _emalloc_large(size_t size) ZEND_ATTRIBUTE_MALLOC ZEND_ATTRIBUTE_ALLOC_SIZE(1);
ZEND_API void* ZEND_FASTCALL _emalloc_huge(size_t size) ZEND_ATTRIBUTE_MALLOC ZEND_ATTRIBUTE_ALLOC_SIZE(1);
# define _ZEND_BIN_ALLOCATOR_SELECTOR_START(_num, _size, _elements, _pages, size, y) \
((size <= _size) ? _emalloc_ ## _size() :
# define _ZEND_BIN_ALLOCATOR_SELECTOR_END(_num, _size, _elements, _pages, size, y) \
)
# define ZEND_ALLOCATOR(size) \
ZEND_MM_BINS_INFO(_ZEND_BIN_ALLOCATOR_SELECTOR_START, size, y) \
((size <= ZEND_MM_MAX_LARGE_SIZE) ? _emalloc_large(size) : _emalloc_huge(size)) \
ZEND_MM_BINS_INFO(_ZEND_BIN_ALLOCATOR_SELECTOR_END, size, y)
# define _emalloc(size) \
(__builtin_constant_p(size) ? \
ZEND_ALLOCATOR(size) \
: \
_emalloc(size) \
)
# define _ZEND_BIN_DEALLOCATOR_DEF(_num, _size, _elements, _pages, x, y) \
ZEND_API void ZEND_FASTCALL _efree_ ## _size(void *);
ZEND_MM_BINS_INFO(_ZEND_BIN_DEALLOCATOR_DEF, x, y)
ZEND_API void ZEND_FASTCALL _efree_large(void *, size_t size);
ZEND_API void ZEND_FASTCALL _efree_huge(void *, size_t size);
# define _ZEND_BIN_DEALLOCATOR_SELECTOR_START(_num, _size, _elements, _pages, ptr, size) \
if (size <= _size) { _efree_ ## _size(ptr); } else
# define ZEND_DEALLOCATOR(ptr, size) \
ZEND_MM_BINS_INFO(_ZEND_BIN_DEALLOCATOR_SELECTOR_START, ptr, size) \
if (size <= ZEND_MM_MAX_LARGE_SIZE) { _efree_large(ptr, size); } \
else { _efree_huge(ptr, size); }
# define efree_size(ptr, size) do { \
if (__builtin_constant_p(size)) { \
ZEND_DEALLOCATOR(ptr, size) \
} else { \
_efree(ptr); \
} \
} while (0)
# define efree_size_rel(ptr, size) \
efree_size(ptr, size)
#else
# define efree_size(ptr, size) \
efree(ptr)
# define efree_size_rel(ptr, size) \
efree_rel(ptr)
#define _emalloc_large _emalloc
#define _emalloc_huge _emalloc
#define _efree_large _efree
#define _efree_huge _efree
#endif
/* Standard wrapper macros */
#define emalloc(size) _emalloc((size) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define emalloc_large(size) _emalloc_large((size) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define emalloc_huge(size) _emalloc_huge((size) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define safe_emalloc(nmemb, size, offset) _safe_emalloc((nmemb), (size), (offset) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define efree(ptr) _efree((ptr) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define efree_large(ptr) _efree_large((ptr) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define efree_huge(ptr) _efree_huge((ptr) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define ecalloc(nmemb, size) _ecalloc((nmemb), (size) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define erealloc(ptr, size) _erealloc((ptr), (size) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define erealloc2(ptr, size, copy_size) _erealloc2((ptr), (size), (copy_size) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define safe_erealloc(ptr, nmemb, size, offset) _safe_erealloc((ptr), (nmemb), (size), (offset) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define erealloc_recoverable(ptr, size) _erealloc((ptr), (size) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define erealloc2_recoverable(ptr, size, copy_size) _erealloc2((ptr), (size), (copy_size) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define estrdup(s) _estrdup((s) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define estrndup(s, length) _estrndup((s), (length) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define zend_mem_block_size(ptr) _zend_mem_block_size((ptr) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
/* Relay wrapper macros */
#define emalloc_rel(size) _emalloc((size) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
#define safe_emalloc_rel(nmemb, size, offset) _safe_emalloc((nmemb), (size), (offset) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
#define efree_rel(ptr) _efree((ptr) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
#define ecalloc_rel(nmemb, size) _ecalloc((nmemb), (size) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
#define erealloc_rel(ptr, size) _erealloc((ptr), (size) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
#define erealloc2_rel(ptr, size, copy_size) _erealloc2((ptr), (size), (copy_size) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
#define erealloc_recoverable_rel(ptr, size) _erealloc((ptr), (size) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
#define erealloc2_recoverable_rel(ptr, size, copy_size) _erealloc2((ptr), (size), (copy_size) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
#define safe_erealloc_rel(ptr, nmemb, size, offset) _safe_erealloc((ptr), (nmemb), (size), (offset) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
#define estrdup_rel(s) _estrdup((s) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
#define estrndup_rel(s, length) _estrndup((s), (length) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
#define zend_mem_block_size_rel(ptr) _zend_mem_block_size((ptr) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
ZEND_API void * __zend_malloc(size_t len) ZEND_ATTRIBUTE_MALLOC ZEND_ATTRIBUTE_ALLOC_SIZE(1);
ZEND_API void * __zend_calloc(size_t nmemb, size_t len) ZEND_ATTRIBUTE_MALLOC ZEND_ATTRIBUTE_ALLOC_SIZE2(1,2);
ZEND_API void * __zend_realloc(void *p, size_t len) ZEND_ATTRIBUTE_ALLOC_SIZE(2);
/* Selective persistent/non persistent allocation macros */
#define pemalloc(size, persistent) ((persistent)?__zend_malloc(size):emalloc(size))
#define safe_pemalloc(nmemb, size, offset, persistent) ((persistent)?_safe_malloc(nmemb, size, offset):safe_emalloc(nmemb, size, offset))
#define pefree(ptr, persistent) ((persistent)?free(ptr):efree(ptr))
#define pefree_size(ptr, size, persistent) do { \
if (persistent) { \
free(ptr); \
} else { \
efree_size(ptr, size);\
} \
} while (0)
#define pecalloc(nmemb, size, persistent) ((persistent)?__zend_calloc((nmemb), (size)):ecalloc((nmemb), (size)))
#define perealloc(ptr, size, persistent) ((persistent)?__zend_realloc((ptr), (size)):erealloc((ptr), (size)))
#define perealloc2(ptr, size, copy_size, persistent) ((persistent)?__zend_realloc((ptr), (size)):erealloc2((ptr), (size), (copy_size)))
#define safe_perealloc(ptr, nmemb, size, offset, persistent) ((persistent)?_safe_realloc((ptr), (nmemb), (size), (offset)):safe_erealloc((ptr), (nmemb), (size), (offset)))
#define perealloc_recoverable(ptr, size, persistent) ((persistent)?realloc((ptr), (size)):erealloc_recoverable((ptr), (size)))
#define perealloc2_recoverable(ptr, size, persistent) ((persistent)?realloc((ptr), (size)):erealloc2_recoverable((ptr), (size), (copy_size)))
#define pestrdup(s, persistent) ((persistent)?strdup(s):estrdup(s))
#define pestrndup(s, length, persistent) ((persistent)?zend_strndup((s),(length)):estrndup((s),(length)))
#define pemalloc_rel(size, persistent) ((persistent)?__zend_malloc(size):emalloc_rel(size))
#define pefree_rel(ptr, persistent) ((persistent)?free(ptr):efree_rel(ptr))
#define pecalloc_rel(nmemb, size, persistent) ((persistent)?__zend_calloc((nmemb), (size)):ecalloc_rel((nmemb), (size)))
#define perealloc_rel(ptr, size, persistent) ((persistent)?__zend_realloc((ptr), (size)):erealloc_rel((ptr), (size)))
#define perealloc2_rel(ptr, size, copy_size, persistent) ((persistent)?__zend_realloc((ptr), (size)):erealloc2_rel((ptr), (size), (copy_size)))
#define perealloc_recoverable_rel(ptr, size, persistent) ((persistent)?realloc((ptr), (size)):erealloc_recoverable_rel((ptr), (size)))
#define perealloc2_recoverable_rel(ptr, size, copy_size, persistent) ((persistent)?realloc((ptr), (size)):erealloc2_recoverable_rel((ptr), (size), (copy_size)))
#define pestrdup_rel(s, persistent) ((persistent)?strdup(s):estrdup_rel(s))
ZEND_API int zend_set_memory_limit(size_t memory_limit);
ZEND_API void start_memory_manager(void);
ZEND_API void shutdown_memory_manager(int silent, int full_shutdown);
ZEND_API int is_zend_mm(void);
ZEND_API size_t zend_memory_usage(int real_usage);
ZEND_API size_t zend_memory_peak_usage(int real_usage);
/* fast cache for HashTables */
#define ALLOC_HASHTABLE(ht) \
(ht) = (HashTable *) emalloc(sizeof(HashTable))
#define FREE_HASHTABLE(ht) \
efree_size(ht, sizeof(HashTable))
#define ALLOC_HASHTABLE_REL(ht) \
(ht) = (HashTable *) emalloc_rel(sizeof(HashTable))
#define FREE_HASHTABLE_REL(ht) \
efree_size_rel(ht, sizeof(HashTable))
/* Heap functions */
typedef struct _zend_mm_heap zend_mm_heap;
ZEND_API zend_mm_heap *zend_mm_startup(void);
ZEND_API void zend_mm_shutdown(zend_mm_heap *heap, int full_shutdown, int silent);
ZEND_API void* ZEND_FASTCALL _zend_mm_alloc(zend_mm_heap *heap, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC) ZEND_ATTRIBUTE_MALLOC;
ZEND_API void ZEND_FASTCALL _zend_mm_free(zend_mm_heap *heap, void *p ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
ZEND_API void* ZEND_FASTCALL _zend_mm_realloc(zend_mm_heap *heap, void *p, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
ZEND_API void* ZEND_FASTCALL _zend_mm_realloc2(zend_mm_heap *heap, void *p, size_t size, size_t copy_size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
ZEND_API size_t ZEND_FASTCALL _zend_mm_block_size(zend_mm_heap *heap, void *p ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
#define zend_mm_alloc(heap, size) _zend_mm_alloc((heap), (size) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define zend_mm_free(heap, p) _zend_mm_free((heap), (p) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define zend_mm_realloc(heap, p, size) _zend_mm_realloc((heap), (p), (size) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define zend_mm_realloc2(heap, p, size, copy_size) _zend_mm_realloc2((heap), (p), (size), (copy_size) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define zend_mm_block_size(heap, p) _zend_mm_block_size((heap), (p) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
#define zend_mm_alloc_rel(heap, size) _zend_mm_alloc((heap), (size) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
#define zend_mm_free_rel(heap, p) _zend_mm_free((heap), (p) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
#define zend_mm_realloc_rel(heap, p, size) _zend_mm_realloc((heap), (p), (size) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
#define zend_mm_realloc2_rel(heap, p, size, copy_size) _zend_mm_realloc2((heap), (p), (size), (copy_size) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
#define zend_mm_block_size_rel(heap, p) _zend_mm_block_size((heap), (p) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
ZEND_API zend_mm_heap *zend_mm_set_heap(zend_mm_heap *new_heap);
ZEND_API zend_mm_heap *zend_mm_get_heap(void);
ZEND_API size_t zend_mm_gc(zend_mm_heap *heap);
#define ZEND_MM_CUSTOM_HEAP_NONE 0
#define ZEND_MM_CUSTOM_HEAP_STD 1
#define ZEND_MM_CUSTOM_HEAP_DEBUG 2
ZEND_API int zend_mm_is_custom_heap(zend_mm_heap *new_heap);
ZEND_API void zend_mm_set_custom_handlers(zend_mm_heap *heap,
void* (*_malloc)(size_t),
void (*_free)(void*),
void* (*_realloc)(void*, size_t));
ZEND_API void zend_mm_get_custom_handlers(zend_mm_heap *heap,
void* (**_malloc)(size_t),
void (**_free)(void*),
void* (**_realloc)(void*, size_t));
#if ZEND_DEBUG
ZEND_API void zend_mm_set_custom_debug_handlers(zend_mm_heap *heap,
void* (*_malloc)(size_t ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC),
void (*_free)(void* ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC),
void* (*_realloc)(void*, size_t ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC));
#endif
typedef struct _zend_mm_storage zend_mm_storage;
typedef void* (*zend_mm_chunk_alloc_t)(zend_mm_storage *storage, size_t size, size_t alignment);
typedef void (*zend_mm_chunk_free_t)(zend_mm_storage *storage, void *chunk, size_t size);
typedef int (*zend_mm_chunk_truncate_t)(zend_mm_storage *storage, void *chunk, size_t old_size, size_t new_size);
typedef int (*zend_mm_chunk_extend_t)(zend_mm_storage *storage, void *chunk, size_t old_size, size_t new_size);
typedef struct _zend_mm_handlers {
zend_mm_chunk_alloc_t chunk_alloc;
zend_mm_chunk_free_t chunk_free;
zend_mm_chunk_truncate_t chunk_truncate;
zend_mm_chunk_extend_t chunk_extend;
} zend_mm_handlers;
struct _zend_mm_storage {
const zend_mm_handlers handlers;
void *data;
};
ZEND_API zend_mm_storage *zend_mm_get_storage(zend_mm_heap *heap);
ZEND_API zend_mm_heap *zend_mm_startup_ex(const zend_mm_handlers *handlers, void *data, size_t data_size);
/*
// The following example shows how to use zend_mm_heap API with custom storage
static zend_mm_heap *apc_heap = NULL;
static HashTable *apc_ht = NULL;
typedef struct _apc_data {
void *mem;
uint32_t free_pages;
} apc_data;
static void *apc_chunk_alloc(zend_mm_storage *storage, size_t size, size_t alignment)
{
apc_data *data = (apc_data*)(storage->data);
size_t real_size = ((size + (ZEND_MM_CHUNK_SIZE-1)) & ~(ZEND_MM_CHUNK_SIZE-1));
uint32_t count = real_size / ZEND_MM_CHUNK_SIZE;
uint32_t first, last, i;
ZEND_ASSERT(alignment == ZEND_MM_CHUNK_SIZE);
for (first = 0; first < 32; first++) {
if (!(data->free_pages & (1 << first))) {
last = first;
do {
if (last - first == count - 1) {
for (i = first; i <= last; i++) {
data->free_pages |= (1 << i);
}
return (void *)(((char*)(data->mem)) + ZEND_MM_CHUNK_SIZE * (1 << first));
}
last++;
} while (last < 32 && !(data->free_pages & (1 << last)));
first = last;
}
}
return NULL;
}
static void apc_chunk_free(zend_mm_storage *storage, void *chunk, size_t size)
{
apc_data *data = (apc_data*)(storage->data);
uint32_t i;
ZEND_ASSERT(((uintptr_t)chunk & (ZEND_MM_CHUNK_SIZE - 1)) == 0);
i = ((uintptr_t)chunk - (uintptr_t)(data->mem)) / ZEND_MM_CHUNK_SIZE;
while (1) {
data->free_pages &= ~(1 << i);
if (size <= ZEND_MM_CHUNK_SIZE) {
break;
}
size -= ZEND_MM_CHUNK_SIZE;
}
}
static void apc_init_heap(void)
{
zend_mm_handlers apc_handlers = {
apc_chunk_alloc,
apc_chunk_free,
NULL,
NULL,
};
apc_data tmp_data;
zend_mm_heap *old_heap;
// Preallocate properly aligned SHM chunks (64MB)
tmp_data.mem = shm_memalign(ZEND_MM_CHUNK_SIZE, ZEND_MM_CHUNK_SIZE * 32);
// Initialize temporary storage data
tmp_data.free_pages = 0;
// Create heap
apc_heap = zend_mm_startup_ex(&apc_handlers, &tmp_data, sizeof(tmp_data));
// Allocate some data in the heap
old_heap = zend_mm_set_heap(apc_heap);
ALLOC_HASHTABLE(apc_ht);
zend_hash_init(apc_ht, 64, NULL, ZVAL_PTR_DTOR, 0);
zend_mm_set_heap(old_heap);
}
*/
END_EXTERN_C()
#endif
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/
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