Mercurial > hg > nginx
annotate src/http/ngx_http.h @ 3440:88741ec7731a stable-0.7
merge r3294, r3305:
Fix a bug introduced in r2032: After a child process has read a terminate
message from a channel, the process tries to read the channel again.
The kernel (at least FreeBSD) may preempt the process and sends a SIGIO
signal to a master process. The master process sends a new terminate message,
the kernel switches again to the the child process, and the child process
reads the messages instead of an EAGAIN error. And this may repeat over
and over. Being that the child process can not exit the cycle and test
the termination flag set by the message handler.
The fix disallow the master process to send a new terminate message on
SIGIO signal reception. It may send the message only on SIGALARM signal.
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Mon, 01 Feb 2010 15:49:36 +0000 |
| parents | 26e06e009ced |
| children | 23e6f26fb4bd |
| rev | line source |
|---|---|
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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7 #ifndef _NGX_HTTP_H_INCLUDED_ |
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8 #define _NGX_HTTP_H_INCLUDED_ |
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11 #include <ngx_config.h> |
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12 #include <ngx_core.h> |
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| 509 | 14 |
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15 typedef struct ngx_http_request_s ngx_http_request_t; |
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16 typedef struct ngx_http_upstream_s ngx_http_upstream_t; |
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17 typedef struct ngx_http_cache_s ngx_http_cache_t; |
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18 typedef struct ngx_http_file_cache_s ngx_http_file_cache_t; |
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19 typedef struct ngx_http_log_ctx_s ngx_http_log_ctx_t; |
| 509 | 20 |
| 21 typedef ngx_int_t (*ngx_http_header_handler_pt)(ngx_http_request_t *r, | |
| 22 ngx_table_elt_t *h, ngx_uint_t offset); | |
| 665 | 23 typedef u_char *(*ngx_http_log_handler_pt)(ngx_http_request_t *r, |
| 24 ngx_http_request_t *sr, u_char *buf, size_t len); | |
| 501 | 25 |
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| 509 | 27 #include <ngx_http_variables.h> |
| 28 #include <ngx_http_request.h> | |
| 479 | 29 #include <ngx_http_upstream.h> |
| 884 | 30 #include <ngx_http_upstream_round_robin.h> |
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31 #include <ngx_http_config.h> |
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32 #include <ngx_http_busy_lock.h> |
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33 #include <ngx_http_script.h> |
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34 #include <ngx_http_core_module.h> |
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36 #if (NGX_HTTP_CACHE) |
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37 #include <ngx_http_cache.h> |
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38 #endif |
| 597 | 39 #if (NGX_HTTP_SSI) |
| 40 #include <ngx_http_ssi_filter_module.h> | |
| 41 #endif | |
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42 #if (NGX_HTTP_SSL) |
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43 #include <ngx_http_ssl_module.h> |
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44 #endif |
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| 479 | 47 struct ngx_http_log_ctx_s { |
| 1810 | 48 ngx_connection_t *connection; |
| 461 | 49 ngx_http_request_t *request; |
| 665 | 50 ngx_http_request_t *current_request; |
| 479 | 51 }; |
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| 675 | 54 #define ngx_http_get_module_ctx(r, module) (r)->ctx[module.ctx_index] |
| 55 #define ngx_http_set_ctx(r, c, module) r->ctx[module.ctx_index] = c; | |
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| 2027 | 58 ngx_int_t ngx_http_add_location(ngx_conf_t *cf, ngx_queue_t **locations, |
| 59 ngx_http_core_loc_conf_t *clcf); | |
| 60 | |
| 61 | |
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62 void ngx_http_init_connection(ngx_connection_t *c); |
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| 1219 | 64 #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME |
| 65 int ngx_http_ssl_servername(ngx_ssl_conn_t *ssl_conn, int *ad, void *arg); | |
| 66 #endif | |
| 67 | |
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68 ngx_int_t ngx_http_parse_request_line(ngx_http_request_t *r, ngx_buf_t *b); |
| 1585 | 69 ngx_int_t ngx_http_parse_complex_uri(ngx_http_request_t *r, |
| 70 ngx_uint_t merge_slashes); | |
| 573 | 71 ngx_int_t ngx_http_parse_unsafe_uri(ngx_http_request_t *r, ngx_str_t *uri, |
| 72 ngx_str_t *args, ngx_uint_t *flags); | |
| 2256 | 73 ngx_int_t ngx_http_parse_header_line(ngx_http_request_t *r, ngx_buf_t *b, |
| 74 ngx_uint_t allow_underscores); | |
| 509 | 75 ngx_int_t ngx_http_parse_multi_header_lines(ngx_array_t *headers, |
| 76 ngx_str_t *name, ngx_str_t *value); | |
| 2415 | 77 ngx_int_t ngx_http_arg(ngx_http_request_t *r, u_char *name, size_t len, |
| 78 ngx_str_t *value); | |
| 2578 | 79 void ngx_http_split_args(ngx_http_request_t *r, ngx_str_t *uri, |
| 80 ngx_str_t *args); | |
| 2415 | 81 |
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83 ngx_int_t ngx_http_find_server_conf(ngx_http_request_t *r); |
| 535 | 84 void ngx_http_update_location_config(ngx_http_request_t *r); |
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85 void ngx_http_handler(ngx_http_request_t *r); |
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86 void ngx_http_run_posted_requests(ngx_connection_t *c); |
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87 ngx_int_t ngx_http_post_request(ngx_http_request_t *r); |
| 509 | 88 void ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc); |
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90 void ngx_http_empty_handler(ngx_event_t *wev); |
| 509 | 91 void ngx_http_request_empty_handler(ngx_http_request_t *r); |
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93 |
| 581 | 94 #define NGX_HTTP_LAST 1 |
| 95 #define NGX_HTTP_FLUSH 2 | |
| 96 | |
| 97 ngx_int_t ngx_http_send_special(ngx_http_request_t *r, ngx_uint_t flags); | |
| 98 | |
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| 479 | 100 ngx_int_t ngx_http_read_client_request_body(ngx_http_request_t *r, |
| 499 | 101 ngx_http_client_body_handler_pt post_handler); |
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103 ngx_int_t ngx_http_send_header(ngx_http_request_t *r); |
| 499 | 104 ngx_int_t ngx_http_special_response_handler(ngx_http_request_t *r, |
| 105 ngx_int_t error); | |
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106 ngx_int_t ngx_http_filter_finalize_request(ngx_http_request_t *r, |
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107 ngx_module_t *m, ngx_int_t error); |
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108 void ngx_http_clean_header(ngx_http_request_t *r); |
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111 time_t ngx_http_parse_time(u_char *value, size_t len); |
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112 size_t ngx_http_get_time(char *buf, time_t t); |
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116 ngx_int_t ngx_http_discard_request_body(ngx_http_request_t *r); |
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117 void ngx_http_block_reading(ngx_http_request_t *r); |
| 2294 | 118 void ngx_http_test_reading(ngx_http_request_t *r); |
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120 |
| 2138 | 121 char *ngx_http_types_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); |
| 122 char *ngx_http_merge_types(ngx_conf_t *cf, ngx_array_t *keys, | |
| 123 ngx_hash_t *types_hash, ngx_array_t *prev_keys, ngx_hash_t *prev_types_hash, | |
| 124 ngx_str_t *default_types); | |
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125 ngx_int_t ngx_http_set_default_types(ngx_conf_t *cf, ngx_array_t **types, |
| 2138 | 126 ngx_str_t *default_type); |
| 127 | |
| 128 | |
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129 extern ngx_module_t ngx_http_module; |
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131 extern ngx_str_t ngx_http_html_default_types[]; |
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134 extern ngx_http_output_header_filter_pt ngx_http_top_header_filter; |
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135 extern ngx_http_output_body_filter_pt ngx_http_top_body_filter; |
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138 #endif /* _NGX_HTTP_H_INCLUDED_ */ |