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comparison src/core/ngx_alloc.c @ 156:afc333135a6b

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nginx-0.0.1-2003-10-23-10:13:16 import
author Igor Sysoev <igor@sysoev.ru>
date Thu, 23 Oct 2003 06:13:16 +0000
parents b27548f540ad
children 2357fa41738a
comparison
equal deleted inserted replaced
155:46eb23d9471d 156:afc333135a6b
18 #endif 18 #endif
19 19
20 return p; 20 return p;
21 } 21 }
22 22
23
23 void *ngx_calloc(size_t size, ngx_log_t *log) 24 void *ngx_calloc(size_t size, ngx_log_t *log)
24 { 25 {
25 void *p; 26 void *p;
26 27
27 p = ngx_alloc(size, log); 28 p = ngx_alloc(size, log);
29 ngx_memzero(p, size); 30 ngx_memzero(p, size);
30 } 31 }
31 32
32 return p; 33 return p;
33 } 34 }
35
34 36
35 ngx_pool_t *ngx_create_pool(size_t size, ngx_log_t *log) 37 ngx_pool_t *ngx_create_pool(size_t size, ngx_log_t *log)
36 { 38 {
37 ngx_pool_t *p; 39 ngx_pool_t *p;
38 40
45 p->log = log; 47 p->log = log;
46 48
47 return p; 49 return p;
48 } 50 }
49 51
52
50 void ngx_destroy_pool(ngx_pool_t *pool) 53 void ngx_destroy_pool(ngx_pool_t *pool)
51 { 54 {
52 ngx_pool_t *p, *n; 55 ngx_pool_t *p, *n;
53 ngx_pool_large_t *l; 56 ngx_pool_large_t *l;
54 57
55 for (l = pool->large; l; l = l->next) { 58 for (l = pool->large; l; l = l->next) {
56 #if (NGX_DEBUG_ALLOC) 59 #if (NGX_DEBUG_ALLOC)
57 ngx_log_debug(pool->log, "free: %08x" _ l->alloc); 60 ngx_log_debug(pool->log, "free: %08x" _ l->alloc);
58 #endif 61 #endif
59 free(l->alloc); 62 if (l->alloc) {
63 free(l->alloc);
64 }
60 } 65 }
61 66
62 /* 67 /*
63 * we could allocate pool->log from this pool 68 * we could allocate pool->log from this pool
64 * so we can not use this log while free()ing the pool 69 * so we can not use this log while free()ing the pool
83 } 88 }
84 89
85 pool = NULL; 90 pool = NULL;
86 } 91 }
87 92
93
88 void *ngx_palloc(ngx_pool_t *pool, size_t size) 94 void *ngx_palloc(ngx_pool_t *pool, size_t size)
89 { 95 {
90 char *m; 96 char *m;
91 ngx_pool_t *p, *n; 97 ngx_pool_t *p, *n;
92 ngx_pool_large_t *large, *last; 98 ngx_pool_large_t *large, *last;
105 if (n == NULL) { 111 if (n == NULL) {
106 break; 112 break;
107 } 113 }
108 } 114 }
109 115
110 /* alloc new pool block */ 116 /* alloc a new pool block */
117
111 ngx_test_null(n, ngx_create_pool(p->end - (char *) p, p->log), NULL); 118 ngx_test_null(n, ngx_create_pool(p->end - (char *) p, p->log), NULL);
112 p->next = n; 119 p->next = n;
113 m = n->last; 120 m = n->last;
114 n->last += size; 121 n->last += size;
122
115 return m; 123 return m;
124 }
116 125
117 /* alloc large block */ 126 /* alloc a large block */
118 } else {
119 large = NULL;
120 last = NULL;
121 127
122 if (pool->large) { 128 large = NULL;
123 for (last = pool->large; /* void */; last = last->next) { 129 last = NULL;
124 if (last->alloc == NULL) {
125 large = last;
126 last = NULL;
127 break;
128 }
129 130
130 if (last->next == NULL) { 131 if (pool->large) {
131 break; 132 for (last = pool->large; /* void */; last = last->next) {
132 } 133 if (last->alloc == NULL) {
134 large = last;
135 last = NULL;
136 break;
137 }
138
139 if (last->next == NULL) {
140 break;
133 } 141 }
134 } 142 }
143 }
135 144
136 if (large == NULL) { 145 if (large == NULL) {
137 ngx_test_null(large, ngx_palloc(pool, sizeof(ngx_pool_large_t)), 146 ngx_test_null(large, ngx_palloc(pool, sizeof(ngx_pool_large_t)), NULL);
138 NULL); 147 large->next = NULL;
139 large->next = NULL; 148 }
149
150 ngx_test_null(p, ngx_alloc(size, pool->log), NULL);
151
152 if (pool->large == NULL) {
153 pool->large = large;
154
155 } else if (last) {
156 last->next = large;
157 }
158
159 large->alloc = p;
160
161 return p;
162 }
163
164
165 void ngx_pfree(ngx_pool_t *pool, void *p)
166 {
167 ngx_pool_large_t *l;
168
169 for (l = pool->large; l; l = l->next) {
170 if (p == l->alloc) {
171 #if (NGX_DEBUG_ALLOC)
172 ngx_log_debug(pool->log, "free: %08x" _ l->alloc);
173 #endif
174 free(l->alloc);
175 l->alloc = NULL;
140 } 176 }
141
142 ngx_test_null(p, ngx_alloc(size, pool->log), NULL);
143
144 if (pool->large == NULL) {
145 pool->large = large;
146
147 } else if (last) {
148 last->next = large;
149 }
150
151 large->alloc = p;
152
153 return p;
154 } 177 }
155 } 178 }
179
156 180
157 void *ngx_pcalloc(ngx_pool_t *pool, size_t size) 181 void *ngx_pcalloc(ngx_pool_t *pool, size_t size)
158 { 182 {
159 void *p; 183 void *p;
160 184