Line data Source code
1 : /*
2 : +----------------------------------------------------------------------+
3 : | Zend Engine |
4 : +----------------------------------------------------------------------+
5 : | Copyright (c) 1998-2015 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 : /* $Id$ */
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 : const char *filename;
48 : uint lineno;
49 : const 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 ZEND_ATTRIBUTE_ALLOC_SIZE(1);
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 ZEND_ATTRIBUTE_ALLOC_SIZE2(1,2);
62 : ZEND_API void *_erealloc(void *ptr, size_t size, int allow_failure ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC) ZEND_ATTRIBUTE_ALLOC_SIZE(2);
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 9 : inline static void * __zend_malloc(size_t len)
94 : {
95 9 : void *tmp = malloc(len);
96 9 : if (tmp) {
97 18 : return tmp;
98 : }
99 0 : fprintf(stderr, "Out of memory\n");
100 0 : exit(1);
101 : }
102 :
103 65 : inline static void * __zend_calloc(size_t nmemb, size_t len)
104 : {
105 65 : void *tmp = _safe_malloc(nmemb, len, 0);
106 65 : memset(tmp, 0, nmemb * len);
107 65 : return tmp;
108 : }
109 :
110 130 : inline static void * __zend_realloc(void *p, size_t len)
111 : {
112 130 : p = realloc(p, len);
113 130 : if (p) {
114 260 : return p;
115 : }
116 0 : fprintf(stderr, "Out of memory\n");
117 0 : 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 : /* fast cache for zval's */
165 : #define ALLOC_ZVAL(z) \
166 : (z) = (zval *) emalloc(sizeof(zval))
167 :
168 : #define FREE_ZVAL(z) \
169 : efree_rel(z)
170 :
171 : #define ALLOC_ZVAL_REL(z) \
172 : (z) = (zval *) emalloc_rel(sizeof(zval))
173 :
174 : #define FREE_ZVAL_REL(z) \
175 : efree_rel(z)
176 :
177 : /* fast cache for HashTables */
178 : #define ALLOC_HASHTABLE(ht) \
179 : (ht) = (HashTable *) emalloc(sizeof(HashTable))
180 :
181 : #define FREE_HASHTABLE(ht) \
182 : efree(ht)
183 :
184 : #define ALLOC_HASHTABLE_REL(ht) \
185 : (ht) = (HashTable *) emalloc_rel(sizeof(HashTable))
186 :
187 : #define FREE_HASHTABLE_REL(ht) \
188 : efree_rel(ht)
189 :
190 : /* Heap functions */
191 : typedef struct _zend_mm_heap zend_mm_heap;
192 :
193 : ZEND_API zend_mm_heap *zend_mm_startup(void);
194 : ZEND_API void zend_mm_shutdown(zend_mm_heap *heap, int full_shutdown, int silent TSRMLS_DC);
195 : 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;
196 : ZEND_API void _zend_mm_free(zend_mm_heap *heap, void *p ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
197 : ZEND_API void *_zend_mm_realloc(zend_mm_heap *heap, void *p, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
198 : ZEND_API size_t _zend_mm_block_size(zend_mm_heap *heap, void *p ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
199 :
200 : #define zend_mm_alloc(heap, size) _zend_mm_alloc((heap), (size) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
201 : #define zend_mm_free(heap, p) _zend_mm_free((heap), (p) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
202 : #define zend_mm_realloc(heap, p, size) _zend_mm_realloc((heap), (p), (size) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
203 : #define zend_mm_block_size(heap, p) _zend_mm_block_size((heap), (p) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
204 :
205 : #define zend_mm_alloc_rel(heap, size) _zend_mm_alloc((heap), (size) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
206 : #define zend_mm_free_rel(heap, p) _zend_mm_free((heap), (p) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
207 : #define zend_mm_realloc_rel(heap, p, size) _zend_mm_realloc((heap), (p), (size) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC)
208 : #define zend_mm_block_size_rel(heap, p) _zend_mm_block_size((heap), (p) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
209 :
210 : /* Heaps with user defined storage */
211 : typedef struct _zend_mm_storage zend_mm_storage;
212 :
213 : typedef struct _zend_mm_segment {
214 : size_t size;
215 : struct _zend_mm_segment *next_segment;
216 : } zend_mm_segment;
217 :
218 : typedef struct _zend_mm_mem_handlers {
219 : const char *name;
220 : zend_mm_storage* (*init)(void *params);
221 : void (*dtor)(zend_mm_storage *storage);
222 : void (*compact)(zend_mm_storage *storage);
223 : zend_mm_segment* (*_alloc)(zend_mm_storage *storage, size_t size);
224 : zend_mm_segment* (*_realloc)(zend_mm_storage *storage, zend_mm_segment *ptr, size_t size);
225 : void (*_free)(zend_mm_storage *storage, zend_mm_segment *ptr);
226 : } zend_mm_mem_handlers;
227 :
228 : struct _zend_mm_storage {
229 : const zend_mm_mem_handlers *handlers;
230 : void *data;
231 : };
232 :
233 : 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);
234 : ZEND_API zend_mm_heap *zend_mm_set_heap(zend_mm_heap *new_heap TSRMLS_DC);
235 : ZEND_API zend_mm_storage *zend_mm_get_storage(zend_mm_heap *heap);
236 :
237 : ZEND_API void zend_mm_set_custom_handlers(zend_mm_heap *heap,
238 : void* (*_malloc)(size_t),
239 : void (*_free)(void*),
240 : void* (*_realloc)(void*, size_t));
241 :
242 : #endif
243 :
244 : /*
245 : * Local variables:
246 : * tab-width: 4
247 : * c-basic-offset: 4
248 : * indent-tabs-mode: t
249 : * End:
250 : */
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