Annotation of embedaddon/php/Zend/zend_alloc.h, revision 1.1.1.1
1.1 misho 1: /*
2: +----------------------------------------------------------------------+
3: | Zend Engine |
4: +----------------------------------------------------------------------+
5: | Copyright (c) 1998-2012 Zend Technologies Ltd. (http://www.zend.com) |
6: +----------------------------------------------------------------------+
7: | This source file is subject to version 2.00 of the Zend license, |
8: | that is bundled with this package in the file LICENSE, and is |
9: | available through the world-wide-web at the following url: |
10: | http://www.zend.com/license/2_00.txt. |
11: | If you did not receive a copy of the Zend license and are unable to |
12: | obtain it through the world-wide-web, please send a note to |
13: | license@zend.com so we can mail you a copy immediately. |
14: +----------------------------------------------------------------------+
15: | Authors: Andi Gutmans <andi@zend.com> |
16: | Zeev Suraski <zeev@zend.com> |
17: +----------------------------------------------------------------------+
18: */
19:
20: /* $Id: zend_alloc.h 321634 2012-01-01 13:15:04Z felipe $ */
21:
22: #ifndef ZEND_ALLOC_H
23: #define ZEND_ALLOC_H
24:
25: #include <stdio.h>
26:
27: #include "../TSRM/TSRM.h"
28: #include "zend.h"
29:
30: #ifndef ZEND_MM_ALIGNMENT
31: # define ZEND_MM_ALIGNMENT 8
32: # define ZEND_MM_ALIGNMENT_LOG2 3
33: #elif ZEND_MM_ALIGNMENT < 4
34: # undef ZEND_MM_ALIGNMENT
35: # undef ZEND_MM_ALIGNMENT_LOG2
36: # define ZEND_MM_ALIGNMENT 4
37: # define ZEND_MM_ALIGNMENT_LOG2 2
38: #endif
39:
40: #define ZEND_MM_ALIGNMENT_MASK ~(ZEND_MM_ALIGNMENT-1)
41:
42: #define ZEND_MM_ALIGNED_SIZE(size) (((size) + ZEND_MM_ALIGNMENT - 1) & ZEND_MM_ALIGNMENT_MASK)
43:
44: typedef struct _zend_leak_info {
45: void *addr;
46: size_t size;
47: char *filename;
48: uint lineno;
49: char *orig_filename;
50: uint orig_lineno;
51: } zend_leak_info;
52:
53: BEGIN_EXTERN_C()
54:
55: ZEND_API char *zend_strndup(const char *s, unsigned int length) ZEND_ATTRIBUTE_MALLOC;
56:
57: ZEND_API void *_emalloc(size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC) ZEND_ATTRIBUTE_MALLOC;
58: ZEND_API void *_safe_emalloc(size_t nmemb, size_t size, size_t offset ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC) ZEND_ATTRIBUTE_MALLOC;
59: ZEND_API void *_safe_malloc(size_t nmemb, size_t size, size_t offset) ZEND_ATTRIBUTE_MALLOC;
60: ZEND_API void _efree(void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
61: ZEND_API void *_ecalloc(size_t nmemb, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC) ZEND_ATTRIBUTE_MALLOC;
62: ZEND_API void *_erealloc(void *ptr, size_t size, int allow_failure ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
63: ZEND_API void *_safe_erealloc(void *ptr, size_t nmemb, size_t size, size_t offset ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
64: ZEND_API void *_safe_realloc(void *ptr, size_t nmemb, size_t size, size_t offset);
65: ZEND_API char *_estrdup(const char *s ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC) ZEND_ATTRIBUTE_MALLOC;
66: ZEND_API char *_estrndup(const char *s, unsigned int length ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC) ZEND_ATTRIBUTE_MALLOC;
67: ZEND_API size_t _zend_mem_block_size(void *ptr TSRMLS_DC ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
68:
69: /* Standard wrapper macros */
70: #define emalloc(size) _emalloc((size) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
71: #define safe_emalloc(nmemb, size, offset) _safe_emalloc((nmemb), (size), (offset) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
72: #define efree(ptr) _efree((ptr) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
73: #define ecalloc(nmemb, size) _ecalloc((nmemb), (size) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
74: #define erealloc(ptr, size) _erealloc((ptr), (size), 0 ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
75: #define safe_erealloc(ptr, nmemb, size, offset) _safe_erealloc((ptr), (nmemb), (size), (offset) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
76: #define erealloc_recoverable(ptr, size) _erealloc((ptr), (size), 1 ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
77: #define estrdup(s) _estrdup((s) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
78: #define estrndup(s, length) _estrndup((s), (length) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
79: #define zend_mem_block_size(ptr) _zend_mem_block_size((ptr) TSRMLS_CC ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
80:
81: /* Relay wrapper macros */
82: #define emalloc_rel(size) _emalloc((size) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
83: #define safe_emalloc_rel(nmemb, size, offset) _safe_emalloc((nmemb), (size), (offset) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
84: #define efree_rel(ptr) _efree((ptr) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
85: #define ecalloc_rel(nmemb, size) _ecalloc((nmemb), (size) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
86: #define erealloc_rel(ptr, size) _erealloc((ptr), (size), 0 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
87: #define erealloc_recoverable_rel(ptr, size) _erealloc((ptr), (size), 1 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
88: #define safe_erealloc_rel(ptr, nmemb, size, offset) _safe_erealloc((ptr), (nmemb), (size), (offset) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
89: #define estrdup_rel(s) _estrdup((s) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
90: #define estrndup_rel(s, length) _estrndup((s), (length) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
91: #define zend_mem_block_size_rel(ptr) _zend_mem_block_size((ptr) TSRMLS_CC ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
92:
93: inline static void * __zend_malloc(size_t len)
94: {
95: void *tmp = malloc(len);
96: if (tmp) {
97: return tmp;
98: }
99: fprintf(stderr, "Out of memory\n");
100: exit(1);
101: }
102:
103: inline static void * __zend_calloc(size_t nmemb, size_t len)
104: {
105: void *tmp = _safe_malloc(nmemb, len, 0);
106: memset(tmp, 0, nmemb * len);
107: return tmp;
108: }
109:
110: inline static void * __zend_realloc(void *p, size_t len)
111: {
112: p = realloc(p, len);
113: if (p) {
114: return p;
115: }
116: fprintf(stderr, "Out of memory\n");
117: exit(1);
118: }
119:
120:
121: /* Selective persistent/non persistent allocation macros */
122: #define pemalloc(size, persistent) ((persistent)?__zend_malloc(size):emalloc(size))
123: #define safe_pemalloc(nmemb, size, offset, persistent) ((persistent)?_safe_malloc(nmemb, size, offset):safe_emalloc(nmemb, size, offset))
124: #define pefree(ptr, persistent) ((persistent)?free(ptr):efree(ptr))
125: #define pecalloc(nmemb, size, persistent) ((persistent)?__zend_calloc((nmemb), (size)):ecalloc((nmemb), (size)))
126: #define perealloc(ptr, size, persistent) ((persistent)?__zend_realloc((ptr), (size)):erealloc((ptr), (size)))
127: #define safe_perealloc(ptr, nmemb, size, offset, persistent) ((persistent)?_safe_realloc((ptr), (nmemb), (size), (offset)):safe_erealloc((ptr), (nmemb), (size), (offset)))
128: #define perealloc_recoverable(ptr, size, persistent) ((persistent)?__zend_realloc((ptr), (size)):erealloc_recoverable((ptr), (size)))
129: #define pestrdup(s, persistent) ((persistent)?strdup(s):estrdup(s))
130: #define pestrndup(s, length, persistent) ((persistent)?zend_strndup((s),(length)):estrndup((s),(length)))
131:
132: #define pemalloc_rel(size, persistent) ((persistent)?__zend_malloc(size):emalloc_rel(size))
133: #define pefree_rel(ptr, persistent) ((persistent)?free(ptr):efree_rel(ptr))
134: #define pecalloc_rel(nmemb, size, persistent) ((persistent)?__zend_calloc((nmemb), (size)):ecalloc_rel((nmemb), (size)))
135: #define perealloc_rel(ptr, size, persistent) ((persistent)?__zend_realloc((ptr), (size)):erealloc_rel((ptr), (size)))
136: #define perealloc_recoverable_rel(ptr, size, persistent) ((persistent)?__zend_realloc((ptr), (size)):erealloc_recoverable_rel((ptr), (size)))
137: #define pestrdup_rel(s, persistent) ((persistent)?strdup(s):estrdup_rel(s))
138:
139: #define safe_estrdup(ptr) ((ptr)?(estrdup(ptr)):STR_EMPTY_ALLOC())
140: #define safe_estrndup(ptr, len) ((ptr)?(estrndup((ptr), (len))):STR_EMPTY_ALLOC())
141:
142: ZEND_API int zend_set_memory_limit(size_t memory_limit);
143:
144: ZEND_API void start_memory_manager(TSRMLS_D);
145: ZEND_API void shutdown_memory_manager(int silent, int full_shutdown TSRMLS_DC);
146: ZEND_API int is_zend_mm(TSRMLS_D);
147:
148: #if ZEND_DEBUG
149: ZEND_API int _mem_block_check(void *ptr, int silent ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
150: ZEND_API void _full_mem_check(int silent ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
151: void zend_debug_alloc_output(char *format, ...);
152: #define mem_block_check(ptr, silent) _mem_block_check(ptr, silent ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
153: #define full_mem_check(silent) _full_mem_check(silent ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
154: #else
155: #define mem_block_check(type, ptr, silent)
156: #define full_mem_check(silent)
157: #endif
158:
159: ZEND_API size_t zend_memory_usage(int real_usage TSRMLS_DC);
160: ZEND_API size_t zend_memory_peak_usage(int real_usage TSRMLS_DC);
161:
162: END_EXTERN_C()
163:
164: /* Macroses for zend_fast_cache.h compatibility */
165:
166: #define ZEND_FAST_ALLOC(p, type, fc_type) \
167: (p) = (type *) emalloc(sizeof(type))
168:
169: #define ZEND_FAST_FREE(p, fc_type) \
170: efree(p)
171:
172: #define ZEND_FAST_ALLOC_REL(p, type, fc_type) \
173: (p) = (type *) emalloc_rel(sizeof(type))
174:
175: #define ZEND_FAST_FREE_REL(p, fc_type) \
176: efree_rel(p)
177:
178: /* fast cache for zval's */
179: #define ALLOC_ZVAL(z) \
180: ZEND_FAST_ALLOC(z, zval, ZVAL_CACHE_LIST)
181:
182: #define FREE_ZVAL(z) \
183: ZEND_FAST_FREE(z, ZVAL_CACHE_LIST)
184:
185: #define ALLOC_ZVAL_REL(z) \
186: ZEND_FAST_ALLOC_REL(z, zval, ZVAL_CACHE_LIST)
187:
188: #define FREE_ZVAL_REL(z) \
189: ZEND_FAST_FREE_REL(z, ZVAL_CACHE_LIST)
190:
191: /* fast cache for HashTables */
192: #define ALLOC_HASHTABLE(ht) \
193: ZEND_FAST_ALLOC(ht, HashTable, HASHTABLE_CACHE_LIST)
194:
195: #define FREE_HASHTABLE(ht) \
196: ZEND_FAST_FREE(ht, HASHTABLE_CACHE_LIST)
197:
198: #define ALLOC_HASHTABLE_REL(ht) \
199: ZEND_FAST_ALLOC_REL(ht, HashTable, HASHTABLE_CACHE_LIST)
200:
201: #define FREE_HASHTABLE_REL(ht) \
202: ZEND_FAST_FREE_REL(ht, HASHTABLE_CACHE_LIST)
203:
204: /* Heap functions */
205: typedef struct _zend_mm_heap zend_mm_heap;
206: typedef struct _zend_mm_heap_canary zend_mm_heap_canary;
207:
208:
209: ZEND_API zend_mm_heap *zend_mm_startup(void);
210: ZEND_API void zend_mm_shutdown(zend_mm_heap *heap, int full_shutdown, int silent TSRMLS_DC);
211: ZEND_API void *_zend_mm_alloc(zend_mm_heap *heap, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC) ZEND_ATTRIBUTE_MALLOC;
212: ZEND_API void _zend_mm_free(zend_mm_heap *heap, void *p ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
213: ZEND_API void *_zend_mm_realloc(zend_mm_heap *heap, void *p, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
214: ZEND_API size_t _zend_mm_block_size(zend_mm_heap *heap, void *p ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
215:
216: #define zend_mm_alloc(heap, size) _zend_mm_alloc((heap), (size) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
217: #define zend_mm_free(heap, p) _zend_mm_free((heap), (p) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
218: #define zend_mm_realloc(heap, p, size) _zend_mm_realloc((heap), (p), (size) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
219: #define zend_mm_block_size(heap, p) _zend_mm_block_size((heap), (p) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
220:
221: #define zend_mm_alloc_rel(heap, size) _zend_mm_alloc((heap), (size) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
222: #define zend_mm_free_rel(heap, p) _zend_mm_free((heap), (p) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
223: #define zend_mm_realloc_rel(heap, p, size) _zend_mm_realloc((heap), (p), (size) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
224: #define zend_mm_block_size_rel(heap, p) _zend_mm_block_size((heap), (p) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
225:
226: /* Heaps with user defined storage */
227: typedef struct _zend_mm_storage zend_mm_storage;
228:
229: typedef struct _zend_mm_segment {
230: size_t size;
231: struct _zend_mm_segment *next_segment;
232: } zend_mm_segment;
233:
234: typedef struct _zend_mm_mem_handlers {
235: const char *name;
236: zend_mm_storage* (*init)(void *params);
237: void (*dtor)(zend_mm_storage *storage);
238: void (*compact)(zend_mm_storage *storage);
239: zend_mm_segment* (*_alloc)(zend_mm_storage *storage, size_t size);
240: zend_mm_segment* (*_realloc)(zend_mm_storage *storage, zend_mm_segment *ptr, size_t size);
241: void (*_free)(zend_mm_storage *storage, zend_mm_segment *ptr);
242: } zend_mm_mem_handlers;
243:
244: struct _zend_mm_storage {
245: const zend_mm_mem_handlers *handlers;
246: void *data;
247: };
248:
249: ZEND_API zend_mm_heap *zend_mm_startup_ex(const zend_mm_mem_handlers *handlers, size_t block_size, size_t reserve_size, int internal, void *params);
250: ZEND_API zend_mm_heap *zend_mm_set_heap(zend_mm_heap *new_heap TSRMLS_DC);
251: ZEND_API zend_mm_storage *zend_mm_get_storage(zend_mm_heap *heap);
252:
253: ZEND_API void zend_mm_set_custom_handlers(zend_mm_heap *heap,
254: void* (*_malloc)(size_t),
255: void (*_free)(void*),
256: void* (*_realloc)(void*, size_t));
257:
258: #endif
259:
260: /*
261: * Local variables:
262: * tab-width: 4
263: * c-basic-offset: 4
264: * indent-tabs-mode: t
265: * End:
266: */
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