Mercurial > hg > nginx

annotate src/core/ngx_buf.c @ 507:cd3117ad9aab release-0.1.28

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
nginx-0.1.28-RELEASE import *) Bugfix: nginx hogs CPU while proxying the huge files. *) Bugfix: nginx could not be built by gcc 4.0 on Linux.
author Igor Sysoev <igor@sysoev.ru>
date Fri, 08 Apr 2005 15:18:55 +0000
parents d4ea69372b94
children 9b8c906f6e63
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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1
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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2 /*
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42d11f017717 nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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6
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cd035a94e0b6 nginx-0.0.1-2002-12-27-10:27:47 import
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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10
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64d9afb209da nginx-0.1.24-RELEASE import
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11 ngx_buf_t *
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12 ngx_create_temp_buf(ngx_pool_t *pool, size_t size)
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13 {
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14 ngx_buf_t *b;
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6ce4755737b4 nginx-0.0.1-2002-09-26-20:50:29 import
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15
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16 b = ngx_calloc_buf(pool);
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17 if (b == NULL) {
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18 return NULL;
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19 }
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20
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21 b->start = ngx_palloc(pool, size);
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22 if (b->start == NULL) {
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23 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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24 }
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389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
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25
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26 /*
64d9afb209da nginx-0.1.24-RELEASE import
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27 * set by ngx_calloc_buf():
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28 *
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29 * b->file_pos = 0;
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30 * b->file_last = 0;
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31 * b->file = NULL;
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32 * b->shadow = NULL;
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33 * b->tag = 0;
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34 *
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35 */
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36
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37 b->pos = b->start;
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38 b->last = b->start;
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39 b->end = b->last + size;
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40 b->temporary = 1;
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41
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42 return b;
0
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43 }
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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45
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46 ngx_chain_t *
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cd3117ad9aab nginx-0.1.28-RELEASE import
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47 ngx_alloc_chain_link(ngx_pool_t *pool)
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48 {
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49 ngx_chain_t *cl;
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50
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51 cl = pool->chain;
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52
cd3117ad9aab nginx-0.1.28-RELEASE import
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53 if (cl) {
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54 pool->chain = cl->next;
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55 return cl;
cd3117ad9aab nginx-0.1.28-RELEASE import
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56 }
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57
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58 cl = ngx_palloc(pool, sizeof(ngx_chain_t));
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59 if (cl == NULL) {
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60 return NULL;
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61 }
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62
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63 return cl;
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64 }
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65
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66
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67 ngx_chain_t *
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68 ngx_create_chain_of_bufs(ngx_pool_t *pool, ngx_bufs_t *bufs)
160
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69 {
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70 u_char *p;
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71 ngx_int_t i;
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72 ngx_buf_t *b;
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73 ngx_chain_t *chain, *cl, **ll;
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74
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75 p = ngx_palloc(pool, bufs->num * bufs->size);
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76 if (p == NULL) {
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77 return NULL;
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78 }
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79
e7e094d34162 nginx-0.0.1-2003-10-27-11:53:49 import
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80 ll = &chain;
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81
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82 for (i = 0; i < bufs->num; i++) {
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83
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84 b = ngx_calloc_buf(pool);
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85 if (b == NULL) {
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86 return NULL;
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87 }
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88
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89 /*
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90 * set by ngx_calloc_buf():
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91 *
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92 * b->file_pos = 0;
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93 * b->file_last = 0;
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94 * b->file = NULL;
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95 * b->shadow = NULL;
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96 * b->tag = 0;
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97 *
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98 */
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99
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100 b->pos = p;
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101 b->last = p;
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102 b->temporary = 1;
160
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103
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104 b->start = p;
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105 p += bufs->size;
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106 b->end = p;
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107
501
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108 cl = ngx_alloc_chain_link(pool);
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109 if (cl == NULL) {
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110 return NULL;
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111 }
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112
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113 cl->buf = b;
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114 *ll = cl;
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115 ll = &cl->next;
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116 }
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117
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118 *ll = NULL;
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119
e7e094d34162 nginx-0.0.1-2003-10-27-11:53:49 import
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120 return chain;
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121 }
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122
e7e094d34162 nginx-0.0.1-2003-10-27-11:53:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 155
diff changeset
123
499
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
124 ngx_int_t
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
125 ngx_chain_add_copy(ngx_pool_t *pool, ngx_chain_t **chain, ngx_chain_t *in)
134
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 132
diff changeset
126 {
155
46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
Igor Sysoev <igor@sysoev.ru>
parents: 154
diff changeset
127 ngx_chain_t *cl, **ll;
134
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 132
diff changeset
128
155
46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
Igor Sysoev <igor@sysoev.ru>
parents: 154
diff changeset
129 ll = chain;
134
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 132
diff changeset
130
155
46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
Igor Sysoev <igor@sysoev.ru>
parents: 154
diff changeset
131 for (cl = *chain; cl; cl = cl->next) {
46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
Igor Sysoev <igor@sysoev.ru>
parents: 154
diff changeset
132 ll = &cl->next;
134
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 132
diff changeset
133 }
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 132
diff changeset
134
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 132
diff changeset
135 while (in) {
501
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
136 cl = ngx_alloc_chain_link(pool);
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
137 if (cl == NULL) {
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
138 return NGX_ERROR;
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
139 }
134
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 132
diff changeset
140
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
141 cl->buf = in->buf;
155
46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
Igor Sysoev <igor@sysoev.ru>
parents: 154
diff changeset
142 *ll = cl;
46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
Igor Sysoev <igor@sysoev.ru>
parents: 154
diff changeset
143 ll = &cl->next;
134
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 132
diff changeset
144 in = in->next;
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 132
diff changeset
145 }
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 132
diff changeset
146
155
46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
Igor Sysoev <igor@sysoev.ru>
parents: 154
diff changeset
147 *ll = NULL;
136
da00cde00e8a nginx-0.0.1-2003-10-02-09:39:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 135
diff changeset
148
134
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 132
diff changeset
149 return NGX_OK;
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 132
diff changeset
150 }
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 132
diff changeset
151
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 132
diff changeset
152
499
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
153 void
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
154 ngx_chain_update_chains(ngx_chain_t **free, ngx_chain_t **busy,
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
155 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
156 {
499
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
157 ngx_chain_t *cl;
132
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
158
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
159 if (*busy == NULL) {
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
160 *busy = *out;
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
161
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
162 } else {
499
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
163 for (cl = *busy; cl->next; cl = cl->next) { /* void */ }
455
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 452
diff changeset
164
499
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
165 cl->next = *out;
132
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
166 }
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
167
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
168 *out = NULL;
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
169
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
170 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
171 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
172 break;
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
173 }
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
174
469
2ff194b74f1e nginx-0.1.9-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 455
diff changeset
175 #if (NGX_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
176 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
177 break;
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
178 }
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
179 #endif
151
2d9e4a8b6d11 nginx-0.0.1-2003-10-20-21:14:07 import
Igor Sysoev <igor@sysoev.ru>
parents: 136
diff changeset
180
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
181 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
182 *busy = (*busy)->next;
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
Igor Sysoev <igor@sysoev.ru>
parents: 134
diff changeset
183 continue;
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
Igor Sysoev <igor@sysoev.ru>
parents: 134
diff changeset
184 }
132
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
185
452
23fb87bddda1 nginx-0.1.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
186 (*busy)->buf->pos = (*busy)->buf->start;
23fb87bddda1 nginx-0.1.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
187 (*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
188
499
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
189 cl = *busy;
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
190 *busy = cl->next;
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
191 cl->next = *free;
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
192 *free = cl;
132
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
193 }
949f45d1589a nginx-0.0.1-2003-09-24-20:44:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 100
diff changeset
194 }