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annotate src/core/ngx_buf.c @ 436:9549fc9508e5

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nginx-0.0.11-2004-09-23-10:32:00 import
author Igor Sysoev <igor@sysoev.ru>
date Thu, 23 Sep 2004 06:32:00 +0000
parents 2e3cbc1bbe3c
children da8c5707af39
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4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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1
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cd035a94e0b6 nginx-0.0.1-2002-12-27-10:27:47 import
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2 #include <ngx_config.h>
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7ebc8b7fb816 nginx-0.0.1-2003-06-03-19:42:58 import
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3 #include <ngx_core.h>
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4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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6 ngx_buf_t *ngx_create_temp_buf(ngx_pool_t *pool, size_t size)
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4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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7 {
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8 ngx_buf_t *b;
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6ce4755737b4 nginx-0.0.1-2002-09-26-20:50:29 import
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10 if (!(b = ngx_calloc_buf(pool))) {
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11 return NULL;
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12 }
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14 if (!(b->start = ngx_palloc(pool, size))) {
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15 return NULL;
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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16 }
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389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
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18 b->pos = b->start;
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19 b->last = b->start;
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20 b->end = b->last + size;
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21 b->temporary = 1;
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23 /*
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9549fc9508e5 nginx-0.0.11-2004-09-23-10:32:00 import
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25 b->file_pos = 0;
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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26 b->file_last = 0;
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6127d7075471 nginx-0.0.1-2003-04-15-19:06:52 import
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28 b->file = NULL;
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29 b->shadow = NULL;
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31 b->tag = 0;
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9549fc9508e5 nginx-0.0.11-2004-09-23-10:32:00 import
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9549fc9508e5 nginx-0.0.11-2004-09-23-10:32:00 import
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33 */
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6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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35 return b;
0
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36 }
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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39 ngx_chain_t *ngx_create_chain_of_bufs(ngx_pool_t *pool, ngx_bufs_t *bufs)
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40 {
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41 u_char *p;
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87e73f067470 nginx-0.0.2-2004-03-16-10:10:12 import
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42 ngx_int_t i;
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43 ngx_buf_t *b;
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44 ngx_chain_t *chain, *cl, **ll;
e7e094d34162 nginx-0.0.1-2003-10-27-11:53:49 import
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45
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46 if (!(p = ngx_palloc(pool, bufs->num * bufs->size))) {
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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47 return NULL;
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48 }
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e7e094d34162 nginx-0.0.1-2003-10-27-11:53:49 import
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50 ll = &chain;
e7e094d34162 nginx-0.0.1-2003-10-27-11:53:49 import
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51
e7e094d34162 nginx-0.0.1-2003-10-27-11:53:49 import
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52 for (i = 0; i < bufs->num; i++) {
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53 if (!(b = ngx_calloc_buf(pool))) {
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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54 return NULL;
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55 }
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57 b->pos = p;
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58 b->last = p;
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59 b->temporary = 1;
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61 b->start = p;
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62 p += bufs->size;
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63 b->end = p;
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65 /*
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66 b->file_pos = 0;
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67 b->file_last = 0;
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68
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69 b->file = NULL;
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70 b->shadow = NULL;
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71 b->tag = 0;
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72 */
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73
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74 if (!(cl = ngx_alloc_chain_link(pool))) {
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75 return NULL;
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76 }
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77
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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78 cl->buf = b;
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79 *ll = cl;
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80 ll = &cl->next;
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81 }
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82
e7e094d34162 nginx-0.0.1-2003-10-27-11:53:49 import
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83 *ll = NULL;
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84
e7e094d34162 nginx-0.0.1-2003-10-27-11:53:49 import
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85 return chain;
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86 }
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87
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88
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2e3cbc1bbe3c nginx-0.0.7-2004-06-16-19:32:11 import
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89 ngx_int_t ngx_chain_add_copy(ngx_pool_t *pool, ngx_chain_t **chain,
2e3cbc1bbe3c nginx-0.0.7-2004-06-16-19:32:11 import
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90 ngx_chain_t *in)
134
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
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91 {
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46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
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92 ngx_chain_t *cl, **ll;
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93
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46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
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94 ll = chain;
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95
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46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
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96 for (cl = *chain; cl; cl = cl->next) {
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97 ll = &cl->next;
134
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
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98 }
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
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99
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
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100 while (in) {
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46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
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101 ngx_test_null(cl, ngx_alloc_chain_link(pool), NGX_ERROR);
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d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
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102
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103 cl->buf = in->buf;
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104 *ll = cl;
46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
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105 ll = &cl->next;
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d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
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106 in = in->next;
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
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107 }
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 132
diff changeset
108
155
46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
Igor Sysoev <igor@sysoev.ru>
parents: 154
diff changeset
109 *ll = NULL;
136
da00cde00e8a nginx-0.0.1-2003-10-02-09:39:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 135
diff changeset
110
134
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 132
diff changeset
111 return NGX_OK;
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 132
diff changeset
112 }
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 132
diff changeset
113
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 132
diff changeset
114
132
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
115 void ngx_chain_update_chains(ngx_chain_t **free, ngx_chain_t **busy,
343
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents: 290
diff changeset
116 ngx_chain_t **out, ngx_buf_tag_t tag)
132
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
117 {
239
574bea0142be nginx-0.0.1-2004-01-26-11:52:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
118 ngx_chain_t *tl;
132
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
119
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
120 if (*busy == NULL) {
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
121 *busy = *out;
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
122
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
123 } else {
239
574bea0142be nginx-0.0.1-2004-01-26-11:52:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
124 for (tl = *busy; /* void */ ; tl = tl->next) {
574bea0142be nginx-0.0.1-2004-01-26-11:52:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
125 if (tl->next == NULL) {
574bea0142be nginx-0.0.1-2004-01-26-11:52:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
126 tl->next = *out;
132
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
127 break;
208
0b67be7d4489 nginx-0.0.1-2003-12-08-23:48:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 194
diff changeset
128 }
132
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
129 }
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
130 }
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
131
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
132 *out = NULL;
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
133
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
134 while (*busy) {
343
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents: 290
diff changeset
135 if (ngx_buf_size((*busy)->buf) != 0) {
132
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
136 break;
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
137 }
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
138
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
139 #if (HAVE_WRITE_ZEROCOPY)
343
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents: 290
diff changeset
140 if ((*busy)->buf->zerocopy_busy) {
132
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
141 break;
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
142 }
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
143 #endif
151
2d9e4a8b6d11 nginx-0.0.1-2003-10-20-21:14:07 import
Igor Sysoev <igor@sysoev.ru>
parents: 136
diff changeset
144
343
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents: 290
diff changeset
145 if ((*busy)->buf->tag != tag) {
135
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
Igor Sysoev <igor@sysoev.ru>
parents: 134
diff changeset
146 *busy = (*busy)->next;
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
Igor Sysoev <igor@sysoev.ru>
parents: 134
diff changeset
147 continue;
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
Igor Sysoev <igor@sysoev.ru>
parents: 134
diff changeset
148 }
132
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
149
343
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents: 290
diff changeset
150 (*busy)->buf->pos = (*busy)->buf->last = (*busy)->buf->start;
132
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
151
239
574bea0142be nginx-0.0.1-2004-01-26-11:52:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
152 tl = *busy;
132
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
153 *busy = (*busy)->next;
239
574bea0142be nginx-0.0.1-2004-01-26-11:52:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
154 tl->next = *free;
574bea0142be nginx-0.0.1-2004-01-26-11:52:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
155 *free = tl;
132
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
156 }
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
157 }