Mercurial > hg > nginx

annotate src/http/ngx_http_copy_filter_module.c @ 3110:c09bf4a53b79

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do not pass incoming buf chain twice if data are ready, the bug was introduced in r3072
author Igor Sysoev <igor@sysoev.ru>
date Mon, 07 Sep 2009 12:10:07 +0000
parents 2f400438466f
children 4c90c9129a82
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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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 */
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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b2e039840718 nginx-0.0.1-2002-12-19-20:49:51 import
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7 #include <ngx_config.h>
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a059e1aa65d4 nginx-0.0.1-2003-06-02-19:24:30 import
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8 #include <ngx_core.h>
a059e1aa65d4 nginx-0.0.1-2003-06-02-19:24:30 import
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9 #include <ngx_http.h>
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53cd05892261 nginx-0.0.1-2002-12-27-19:22:50 import
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a059e1aa65d4 nginx-0.0.1-2003-06-02-19:24:30 import
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12 typedef struct {
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656d468f4ead nginx-0.0.1-2003-10-08-19:32:54 import
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13 ngx_bufs_t bufs;
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af451db3fe99 nginx-0.0.3-2004-05-12-09:37:55 import
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14 } ngx_http_copy_filter_conf_t;
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a059e1aa65d4 nginx-0.0.1-2003-06-02-19:24:30 import
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16
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17 #if (NGX_HAVE_FILE_AIO)
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18 static void ngx_http_copy_aio_handler(ngx_output_chain_ctx_t *ctx,
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19 ngx_file_t *file);
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20 static void ngx_http_copy_aio_event_handler(ngx_event_t *ev);
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21 #if (NGX_HAVE_AIO_SENDFILE)
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22 static void ngx_http_copy_aio_sendfile_event_handler(ngx_event_t *ev);
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23 #endif
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24 #endif
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25
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af451db3fe99 nginx-0.0.3-2004-05-12-09:37:55 import
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26 static void *ngx_http_copy_filter_create_conf(ngx_conf_t *cf);
af451db3fe99 nginx-0.0.3-2004-05-12-09:37:55 import
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27 static char *ngx_http_copy_filter_merge_conf(ngx_conf_t *cf,
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28 void *parent, void *child);
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29 static ngx_int_t ngx_http_copy_filter_init(ngx_conf_t *cf);
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4f3879d9b6f6 nginx-0.0.1-2002-09-11-19:18:33 import
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31
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32 static ngx_command_t ngx_http_copy_filter_commands[] = {
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33
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34 { ngx_string("output_buffers"),
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35 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
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36 ngx_conf_set_bufs_slot,
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37 NGX_HTTP_LOC_CONF_OFFSET,
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38 offsetof(ngx_http_copy_filter_conf_t, bufs),
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39 NULL },
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4f3879d9b6f6 nginx-0.0.1-2002-09-11-19:18:33 import
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40
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41 ngx_null_command
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6f58641241bb nginx-0.0.1-2002-09-07-14:14:25 import
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42 };
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34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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708f8bb772ec nginx-0.0.1-2002-09-02-18:48:24 import
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44
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af451db3fe99 nginx-0.0.3-2004-05-12-09:37:55 import
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45 static ngx_http_module_t ngx_http_copy_filter_module_ctx = {
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46 NULL, /* preconfiguration */
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47 ngx_http_copy_filter_init, /* postconfiguration */
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4db54fdbcbe7 nginx-0.0.1-2003-11-10-20:17:31 import
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48
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637625a2acdb nginx-0.0.1-2003-05-19-20:39:14 import
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49 NULL, /* create main configuration */
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50 NULL, /* init main configuration */
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e43f406e4525 nginx-0.0.1-2003-03-20-19:09:44 import
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51
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637625a2acdb nginx-0.0.1-2003-05-19-20:39:14 import
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52 NULL, /* create server configuration */
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53 NULL, /* merge server configuration */
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54
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af451db3fe99 nginx-0.0.3-2004-05-12-09:37:55 import
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55 ngx_http_copy_filter_create_conf, /* create location configuration */
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56 ngx_http_copy_filter_merge_conf /* merge location configuration */
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53cb81681040 nginx-0.0.1-2002-12-15-09:25:09 import
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57 };
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53cb81681040 nginx-0.0.1-2002-12-15-09:25:09 import
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59
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af451db3fe99 nginx-0.0.3-2004-05-12-09:37:55 import
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60 ngx_module_t ngx_http_copy_filter_module = {
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61 NGX_MODULE_V1,
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62 &ngx_http_copy_filter_module_ctx, /* module context */
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63 ngx_http_copy_filter_commands, /* module directives */
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a23d010f356d nginx-0.0.1-2003-05-27-16:18:54 import
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64 NGX_HTTP_MODULE, /* module type */
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65 NULL, /* init master */
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66 NULL, /* init module */
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67 NULL, /* init process */
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68 NULL, /* init thread */
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69 NULL, /* exit thread */
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70 NULL, /* exit process */
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71 NULL, /* exit master */
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72 NGX_MODULE_V1_PADDING
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73 };
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76 static ngx_http_output_body_filter_pt ngx_http_next_filter;
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79 static ngx_int_t
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80 ngx_http_copy_filter(ngx_http_request_t *r, ngx_chain_t *in)
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81 {
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82 ngx_int_t rc;
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83 ngx_connection_t *c;
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84 ngx_output_chain_ctx_t *ctx;
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85 ngx_http_core_loc_conf_t *clcf;
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86 ngx_http_copy_filter_conf_t *conf;
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87
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88 c = r->connection;
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89
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90 if (r->aio) {
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91 return NGX_AGAIN;
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92 }
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93
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94 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
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95 "http copy filter: \"%V?%V\"", &r->uri, &r->args);
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96
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97 ctx = ngx_http_get_module_ctx(r, ngx_http_copy_filter_module);
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98
50186b49f2ad nginx-0.0.1-2003-02-11-10:14:40 import
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99 if (ctx == NULL) {
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100 ctx = ngx_pcalloc(r->pool, sizeof(ngx_output_chain_ctx_t));
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101 if (ctx == NULL) {
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102 return NGX_ERROR;
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103 }
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104
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105 ngx_http_set_ctx(r, ctx, ngx_http_copy_filter_module);
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106
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107 conf = ngx_http_get_module_loc_conf(r, ngx_http_copy_filter_module);
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108 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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109
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110 ctx->sendfile = c->sendfile;
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111 ctx->need_in_memory = r->main_filter_need_in_memory
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112 || r->filter_need_in_memory;
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113 ctx->need_in_temp = r->filter_need_temporary;
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114
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115 ctx->alignment = clcf->directio_alignment;
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116
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117 ctx->pool = r->pool;
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118 ctx->bufs = conf->bufs;
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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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119 ctx->tag = (ngx_buf_tag_t) &ngx_http_copy_filter_module;
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120
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121 ctx->output_filter = (ngx_output_chain_filter_pt) ngx_http_next_filter;
294
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diff changeset
122 ctx->filter_ctx = r;
60
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diff changeset
123
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124 #if (NGX_HAVE_FILE_AIO)
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125 if (clcf->aio) {
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126 ctx->aio = ngx_http_copy_aio_handler;
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127 #if (NGX_HAVE_AIO_SENDFILE)
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128 c->aio_sendfile = (clcf->aio == NGX_HTTP_AIO_SENDFILE);
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129 #endif
3052
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130 }
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131 #endif
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132
667
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diff changeset
133 r->request_output = 1;
60
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134 }
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diff changeset
135
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136 for ( ;; ) {
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diff changeset
137 rc = ngx_output_chain(ctx, in);
509
9b8c906f6e63 nginx-0.1.29-RELEASE import
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parents: 501
diff changeset
138
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diff changeset
139 if (ctx->in == NULL) {
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diff changeset
140 r->buffered &= ~NGX_HTTP_COPY_BUFFERED;
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141
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diff changeset
142 } else {
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diff changeset
143 r->buffered |= NGX_HTTP_COPY_BUFFERED;
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144 }
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145
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146 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0,
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147 "http copy filter: %i \"%V?%V\"", rc, &r->uri, &r->args);
583
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diff changeset
148
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diff changeset
149 #if (NGX_HAVE_FILE_AIO && NGX_HAVE_AIO_SENDFILE)
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150
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diff changeset
151 if (c->busy_sendfile) {
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diff changeset
152 ssize_t n;
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diff changeset
153 off_t offset;
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diff changeset
154 ngx_file_t *file;
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diff changeset
155 ngx_http_ephemeral_t *e;
3065
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diff changeset
156
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157 file = c->busy_sendfile->file;
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diff changeset
158 offset = c->busy_sendfile->file_pos;
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diff changeset
159
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diff changeset
160 if (file->aio) {
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diff changeset
161 c->aio_sendfile = (offset != file->aio->last_offset);
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162 file->aio->last_offset = offset;
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163
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diff changeset
164 if (c->aio_sendfile == 0) {
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165 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
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diff changeset
166 "sendfile(%V) returned busy again",
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diff changeset
167 &file->name);
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diff changeset
168 }
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diff changeset
169 }
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diff changeset
170
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diff changeset
171 c->busy_sendfile = NULL;
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diff changeset
172 e = (ngx_http_ephemeral_t *) &r->uri_start;
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diff changeset
173
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parents: 3084
diff changeset
174 n = ngx_file_aio_read(file, &e->aio_preload, 1, offset, r->pool);
3065
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175
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diff changeset
176 if (n > 0) {
3110
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diff changeset
177 in = NULL;
3071
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diff changeset
178 continue;
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179 }
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180
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diff changeset
181 rc = n;
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182
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diff changeset
183 if (file->aio) {
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diff changeset
184 file->aio->data = r;
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diff changeset
185 file->aio->handler = ngx_http_copy_aio_sendfile_event_handler;
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diff changeset
186
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diff changeset
187 r->main->blocked++;
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188 r->aio = 1;
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189 }
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190 }
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diff changeset
191 #endif
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diff changeset
192
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193 return rc;
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194 }
4
c5f071d376e5 nginx-0.0.1-2002-08-22-19:24:03 import
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parents: 3
diff changeset
195 }
9
6f58641241bb nginx-0.0.1-2002-09-07-14:14:25 import
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parents: 8
diff changeset
196
6f58641241bb nginx-0.0.1-2002-09-07-14:14:25 import
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parents: 8
diff changeset
197
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diff changeset
198 #if (NGX_HAVE_FILE_AIO)
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diff changeset
199
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200 static void
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diff changeset
201 ngx_http_copy_aio_handler(ngx_output_chain_ctx_t *ctx, ngx_file_t *file)
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diff changeset
202 {
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diff changeset
203 ngx_http_request_t *r;
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diff changeset
204
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diff changeset
205 r = ctx->filter_ctx;
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diff changeset
206
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diff changeset
207 file->aio->data = r;
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diff changeset
208 file->aio->handler = ngx_http_copy_aio_event_handler;
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diff changeset
209
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diff changeset
210 r->main->blocked++;
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diff changeset
211 r->aio = 1;
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diff changeset
212 }
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diff changeset
213
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diff changeset
214
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diff changeset
215 static void
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diff changeset
216 ngx_http_copy_aio_event_handler(ngx_event_t *ev)
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diff changeset
217 {
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diff changeset
218 ngx_event_aio_t *aio;
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diff changeset
219 ngx_http_request_t *r;
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diff changeset
220
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diff changeset
221 aio = ev->data;
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diff changeset
222 r = aio->data;
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diff changeset
223
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diff changeset
224 r->main->blocked--;
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diff changeset
225 r->aio = 0;
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diff changeset
226
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diff changeset
227 r->connection->write->handler(r->connection->write);
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diff changeset
228 }
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diff changeset
229
3065
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diff changeset
230
113cd532b328 aio sendfile
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diff changeset
231 #if (NGX_HAVE_AIO_SENDFILE)
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diff changeset
232
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diff changeset
233 static void
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diff changeset
234 ngx_http_copy_aio_sendfile_event_handler(ngx_event_t *ev)
113cd532b328 aio sendfile
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diff changeset
235 {
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diff changeset
236 ngx_event_aio_t *aio;
113cd532b328 aio sendfile
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diff changeset
237 ngx_http_request_t *r;
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diff changeset
238
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diff changeset
239 aio = ev->data;
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diff changeset
240 r = aio->data;
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diff changeset
241
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diff changeset
242 r->main->blocked--;
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diff changeset
243 r->aio = 0;
113cd532b328 aio sendfile
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diff changeset
244 ev->complete = 0;
113cd532b328 aio sendfile
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diff changeset
245
113cd532b328 aio sendfile
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diff changeset
246 r->connection->write->handler(r->connection->write);
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diff changeset
247 }
113cd532b328 aio sendfile
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diff changeset
248
113cd532b328 aio sendfile
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diff changeset
249 #endif
3052
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diff changeset
250 #endif
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diff changeset
251
6060225e9261 FreeBSD and Linux AIO support
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diff changeset
252
501
d4ea69372b94 nginx-0.1.25-RELEASE import
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parents: 452
diff changeset
253 static void *
d4ea69372b94 nginx-0.1.25-RELEASE import
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parents: 452
diff changeset
254 ngx_http_copy_filter_create_conf(ngx_conf_t *cf)
9
6f58641241bb nginx-0.0.1-2002-09-07-14:14:25 import
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parents: 8
diff changeset
255 {
334
af451db3fe99 nginx-0.0.3-2004-05-12-09:37:55 import
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parents: 327
diff changeset
256 ngx_http_copy_filter_conf_t *conf;
9
6f58641241bb nginx-0.0.1-2002-09-07-14:14:25 import
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parents: 8
diff changeset
257
501
d4ea69372b94 nginx-0.1.25-RELEASE import
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parents: 452
diff changeset
258 conf = ngx_palloc(cf->pool, sizeof(ngx_http_copy_filter_conf_t));
d4ea69372b94 nginx-0.1.25-RELEASE import
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parents: 452
diff changeset
259 if (conf == NULL) {
d4ea69372b94 nginx-0.1.25-RELEASE import
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diff changeset
260 return NULL;
d4ea69372b94 nginx-0.1.25-RELEASE import
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parents: 452
diff changeset
261 }
9
6f58641241bb nginx-0.0.1-2002-09-07-14:14:25 import
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parents: 8
diff changeset
262
141
656d468f4ead nginx-0.0.1-2003-10-08-19:32:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 135
diff changeset
263 conf->bufs.num = 0;
10
4f3879d9b6f6 nginx-0.0.1-2002-09-11-19:18:33 import
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parents: 9
diff changeset
264
4f3879d9b6f6 nginx-0.0.1-2002-09-11-19:18:33 import
Igor Sysoev <igor@sysoev.ru>
parents: 9
diff changeset
265 return conf;
9
6f58641241bb nginx-0.0.1-2002-09-07-14:14:25 import
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parents: 8
diff changeset
266 }
44
0e81ac0bb3e2 nginx-0.0.1-2003-01-09-08:36:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 43
diff changeset
267
0e81ac0bb3e2 nginx-0.0.1-2003-01-09-08:36:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 43
diff changeset
268
501
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 452
diff changeset
269 static char *
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 452
diff changeset
270 ngx_http_copy_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child)
44
0e81ac0bb3e2 nginx-0.0.1-2003-01-09-08:36:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 43
diff changeset
271 {
334
af451db3fe99 nginx-0.0.3-2004-05-12-09:37:55 import
Igor Sysoev <igor@sysoev.ru>
parents: 327
diff changeset
272 ngx_http_copy_filter_conf_t *prev = parent;
af451db3fe99 nginx-0.0.3-2004-05-12-09:37:55 import
Igor Sysoev <igor@sysoev.ru>
parents: 327
diff changeset
273 ngx_http_copy_filter_conf_t *conf = child;
44
0e81ac0bb3e2 nginx-0.0.1-2003-01-09-08:36:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 43
diff changeset
274
160
e7e094d34162 nginx-0.0.1-2003-10-27-11:53:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 155
diff changeset
275 ngx_conf_merge_bufs_value(conf->bufs, prev->bufs, 1, 32768);
44
0e81ac0bb3e2 nginx-0.0.1-2003-01-09-08:36:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 43
diff changeset
276
0e81ac0bb3e2 nginx-0.0.1-2003-01-09-08:36:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 43
diff changeset
277 return NULL;
0e81ac0bb3e2 nginx-0.0.1-2003-01-09-08:36:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 43
diff changeset
278 }
334
af451db3fe99 nginx-0.0.3-2004-05-12-09:37:55 import
Igor Sysoev <igor@sysoev.ru>
parents: 327
diff changeset
279
af451db3fe99 nginx-0.0.3-2004-05-12-09:37:55 import
Igor Sysoev <igor@sysoev.ru>
parents: 327
diff changeset
280
501
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 452
diff changeset
281 static ngx_int_t
681
7e24168b0853 nginx-0.4.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 667
diff changeset
282 ngx_http_copy_filter_init(ngx_conf_t *cf)
334
af451db3fe99 nginx-0.0.3-2004-05-12-09:37:55 import
Igor Sysoev <igor@sysoev.ru>
parents: 327
diff changeset
283 {
af451db3fe99 nginx-0.0.3-2004-05-12-09:37:55 import
Igor Sysoev <igor@sysoev.ru>
parents: 327
diff changeset
284 ngx_http_next_filter = ngx_http_top_body_filter;
af451db3fe99 nginx-0.0.3-2004-05-12-09:37:55 import
Igor Sysoev <igor@sysoev.ru>
parents: 327
diff changeset
285 ngx_http_top_body_filter = ngx_http_copy_filter;
af451db3fe99 nginx-0.0.3-2004-05-12-09:37:55 import
Igor Sysoev <igor@sysoev.ru>
parents: 327
diff changeset
286
af451db3fe99 nginx-0.0.3-2004-05-12-09:37:55 import
Igor Sysoev <igor@sysoev.ru>
parents: 327
diff changeset
287 return NGX_OK;
af451db3fe99 nginx-0.0.3-2004-05-12-09:37:55 import
Igor Sysoev <igor@sysoev.ru>
parents: 327
diff changeset
288 }
af451db3fe99 nginx-0.0.3-2004-05-12-09:37:55 import
Igor Sysoev <igor@sysoev.ru>
parents: 327
diff changeset
289