Mercurial > hg > nginx
annotate src/core/ngx_alloc.c @ 7:b5481d6fbbd4
nginx-0.0.1-2002-08-29-20:59:54 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Thu, 29 Aug 2002 16:59:54 +0000 |
parents | 669801705ab1 |
children | 4f3879d9b6f6 |
rev | line source |
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0
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nginx-0.0.1-2002-08-06-20:39:45 import
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1 |
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
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2 #include <ngx_config.h> |
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nginx-0.0.1-2002-08-06-20:39:45 import
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3 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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4 #include <ngx_errno.h> |
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nginx-0.0.1-2002-08-06-20:39:45 import
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5 #include <ngx_log.h> |
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nginx-0.0.1-2002-08-06-20:39:45 import
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6 #include <ngx_alloc.h> |
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nginx-0.0.1-2002-08-06-20:39:45 import
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7 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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8 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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9 void *ngx_alloc(size_t size, ngx_log_t *log) |
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nginx-0.0.1-2002-08-06-20:39:45 import
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10 { |
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nginx-0.0.1-2002-08-06-20:39:45 import
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11 void *p; |
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12 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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13 p = malloc(size); |
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nginx-0.0.1-2002-08-06-20:39:45 import
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14 if (p == NULL) |
6
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nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
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15 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, |
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nginx-0.0.1-2002-08-26-19:18:19 import
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16 "malloc() %d bytes failed", size); |
7
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nginx-0.0.1-2002-08-29-20:59:54 import
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17 |
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nginx-0.0.1-2002-08-29-20:59:54 import
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18 ngx_log_debug(log, "malloc: %x" _ p); |
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19 |
0
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20 return p; |
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nginx-0.0.1-2002-08-06-20:39:45 import
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21 } |
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22 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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23 void *ngx_calloc(size_t size, ngx_log_t *log) |
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nginx-0.0.1-2002-08-06-20:39:45 import
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24 { |
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nginx-0.0.1-2002-08-06-20:39:45 import
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25 void *p; |
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26 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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27 p = ngx_alloc(size, log); |
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28 if (p) |
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29 ngx_memzero(p, size); |
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30 |
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31 return p; |
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nginx-0.0.1-2002-08-06-20:39:45 import
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32 } |
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nginx-0.0.1-2002-08-06-20:39:45 import
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33 |
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nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
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34 ngx_pool_t *ngx_create_pool(size_t size, ngx_log_t *log) |
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nginx-0.0.1-2002-08-06-20:39:45 import
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35 { |
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nginx-0.0.1-2002-08-06-20:39:45 import
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36 ngx_pool_t *p; |
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37 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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38 ngx_test_null(p, ngx_alloc(size, log), NULL); |
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nginx-0.0.1-2002-08-06-20:39:45 import
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39 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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40 p->last = (char *) p + sizeof(ngx_pool_t); |
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nginx-0.0.1-2002-08-06-20:39:45 import
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41 p->end = (char *) p + size; |
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nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
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42 p->next = NULL; |
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nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
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43 p->large = NULL; |
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nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
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44 p->log = log; |
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45 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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46 return p; |
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nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
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47 } |
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nginx-0.0.1-2002-08-06-20:39:45 import
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48 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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49 void ngx_destroy_pool(ngx_pool_t *pool) |
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nginx-0.0.1-2002-08-06-20:39:45 import
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50 { |
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nginx-0.0.1-2002-08-06-20:39:45 import
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51 ngx_pool_t *p, *n; |
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nginx-0.0.1-2002-08-06-20:39:45 import
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52 ngx_pool_large_t *l; |
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53 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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54 for (l = pool->large; l; l = l->next) |
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nginx-0.0.1-2002-08-06-20:39:45 import
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55 free(l->alloc); |
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nginx-0.0.1-2002-08-06-20:39:45 import
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56 |
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57 for (p = pool, n = pool->next; /* void */; p = n, n = n->next) { |
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58 free(p); |
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59 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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60 if (n == NULL) |
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nginx-0.0.1-2002-08-06-20:39:45 import
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61 break; |
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nginx-0.0.1-2002-08-06-20:39:45 import
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62 } |
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nginx-0.0.1-2002-08-06-20:39:45 import
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63 } |
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nginx-0.0.1-2002-08-06-20:39:45 import
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64 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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65 void *ngx_palloc(ngx_pool_t *pool, size_t size) |
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66 { |
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nginx-0.0.1-2002-08-06-20:39:45 import
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67 void *m; |
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nginx-0.0.1-2002-08-06-20:39:45 import
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68 ngx_pool_t *p, *n; |
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69 ngx_pool_large_t *large, *last; |
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nginx-0.0.1-2002-08-06-20:39:45 import
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70 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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71 if (size <= NGX_MAX_ALLOC_FROM_POOL) { |
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72 |
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73 for (p = pool, n = pool->next; /* void */; p = n, n = n->next) { |
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74 if ((size_t) (p->end - p->last) >= size) { |
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nginx-0.0.1-2002-08-06-20:39:45 import
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75 m = p->last; |
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nginx-0.0.1-2002-08-06-20:39:45 import
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76 p->last += size; |
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77 |
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78 return m; |
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nginx-0.0.1-2002-08-06-20:39:45 import
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79 } |
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nginx-0.0.1-2002-08-06-20:39:45 import
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80 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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81 if (n == NULL) |
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82 break; |
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83 } |
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nginx-0.0.1-2002-08-06-20:39:45 import
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84 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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85 /* alloc new pool block */ |
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nginx-0.0.1-2002-08-06-20:39:45 import
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86 ngx_test_null(n, ngx_create_pool(p->end - (char *) p, p->log), NULL); |
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87 p->next = n; |
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88 m = n->last; |
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89 n->last += size; |
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90 return m; |
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nginx-0.0.1-2002-08-06-20:39:45 import
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91 |
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92 /* alloc large block */ |
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93 } else { |
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nginx-0.0.1-2002-08-06-20:39:45 import
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94 large = NULL; |
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95 last = NULL; |
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96 |
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97 if (pool->large) { |
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98 for (last = pool->large; /* void */; last = last->next) { |
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99 if (last->alloc == NULL) { |
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100 large = last; |
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101 last = NULL; |
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102 break; |
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103 } |
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104 |
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105 if (last->next == NULL) |
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106 break; |
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107 } |
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108 } |
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109 |
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110 if (large == NULL) { |
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111 ngx_test_null(large, ngx_palloc(pool, sizeof(ngx_pool_large_t)), |
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112 NULL); |
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113 } |
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114 |
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115 ngx_test_null(p, ngx_alloc(size, pool->log), NULL); |
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116 |
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117 if (pool->large == NULL) { |
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118 pool->large = large; |
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119 |
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120 } else if (last) { |
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121 last->next = large; |
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122 } |
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123 |
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124 large->alloc = p; |
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125 |
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126 return p; |
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127 } |
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128 } |
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129 |
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130 void *ngx_pcalloc(ngx_pool_t *pool, size_t size) |
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131 { |
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132 void *p; |
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133 |
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134 p = ngx_palloc(pool, size); |
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135 if (p) |
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136 ngx_memzero(p, size); |
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137 |
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138 return p; |
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139 } |