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0
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_event.h>
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10
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11
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12 #define DEFAULT_CONNECTIONS 512
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13
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14
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16
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15 extern ngx_module_t ngx_kqueue_module;
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16 extern ngx_module_t ngx_devpoll_module;
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17 extern ngx_module_t ngx_epoll_module;
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18 extern ngx_module_t ngx_rtsig_module;
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0
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19 extern ngx_module_t ngx_select_module;
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20
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21
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22 static ngx_int_t ngx_event_module_init(ngx_cycle_t *cycle);
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23 static ngx_int_t ngx_event_process_init(ngx_cycle_t *cycle);
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24 static char *ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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25
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26 static char *ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd,
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27 void *conf);
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28 static char *ngx_event_use(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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29 static char *ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd,
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30 void *conf);
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31
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32 static void *ngx_event_create_conf(ngx_cycle_t *cycle);
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33 static char *ngx_event_init_conf(ngx_cycle_t *cycle, void *conf);
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34 static char *ngx_accept_mutex_check(ngx_conf_t *cf, void *post, void *data);
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35
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36
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37 static ngx_uint_t ngx_event_max_module;
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38
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39 ngx_uint_t ngx_event_flags;
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40 ngx_event_actions_t ngx_event_actions;
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41
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42
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43 ngx_atomic_t connection_counter;
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44 ngx_atomic_t *ngx_connection_counter = &connection_counter;
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45
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46
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47 ngx_atomic_t *ngx_accept_mutex_ptr;
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48 ngx_atomic_t *ngx_accept_mutex;
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49 ngx_uint_t ngx_accept_mutex_held;
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50 ngx_msec_t ngx_accept_mutex_delay;
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51 ngx_int_t ngx_accept_disabled;
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52
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53
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54 #if (NGX_STAT_STUB)
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55
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56 ngx_atomic_t ngx_stat_accepted0;
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57 ngx_atomic_t *ngx_stat_accepted = &ngx_stat_accepted0;
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58 ngx_atomic_t ngx_stat_requests0;
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59 ngx_atomic_t *ngx_stat_requests = &ngx_stat_requests0;
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60 ngx_atomic_t ngx_stat_active0;
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61 ngx_atomic_t *ngx_stat_active = &ngx_stat_active0;
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62 ngx_atomic_t ngx_stat_reading0;
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63 ngx_atomic_t *ngx_stat_reading = &ngx_stat_reading0;
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64 ngx_atomic_t ngx_stat_writing0;
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65 ngx_atomic_t *ngx_stat_writing = &ngx_stat_reading0;
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66
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67 #endif
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68
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69
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70
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71 static ngx_command_t ngx_events_commands[] = {
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72
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73 { ngx_string("events"),
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74 NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
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75 ngx_events_block,
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76 0,
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77 0,
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78 NULL },
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79
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80 ngx_null_command
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81 };
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82
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83
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84 static ngx_core_module_t ngx_events_module_ctx = {
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85 ngx_string("events"),
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86 NULL,
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87 NULL
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88 };
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89
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90
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91 ngx_module_t ngx_events_module = {
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92 NGX_MODULE,
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93 &ngx_events_module_ctx, /* module context */
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94 ngx_events_commands, /* module directives */
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95 NGX_CORE_MODULE, /* module type */
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96 NULL, /* init module */
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97 NULL /* init process */
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98 };
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99
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100
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101 static ngx_str_t event_core_name = ngx_string("event_core");
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102
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103 static ngx_conf_post_t ngx_accept_mutex_post = { ngx_accept_mutex_check } ;
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104
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105
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106 static ngx_command_t ngx_event_core_commands[] = {
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107
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108 { ngx_string("connections"),
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109 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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110 ngx_event_connections,
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111 0,
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112 0,
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113 NULL },
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114
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115 { ngx_string("use"),
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116 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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117 ngx_event_use,
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118 0,
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119 0,
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120 NULL },
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121
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122 { ngx_string("multi_accept"),
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123 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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124 ngx_conf_set_flag_slot,
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125 0,
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126 offsetof(ngx_event_conf_t, multi_accept),
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127 NULL },
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128
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129 { ngx_string("accept_mutex"),
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130 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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131 ngx_conf_set_flag_slot,
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132 0,
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133 offsetof(ngx_event_conf_t, accept_mutex),
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134 &ngx_accept_mutex_post },
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135
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136 { ngx_string("accept_mutex_delay"),
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137 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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138 ngx_conf_set_msec_slot,
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139 0,
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140 offsetof(ngx_event_conf_t, accept_mutex_delay),
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141 NULL },
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142
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143 { ngx_string("debug_connection"),
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144 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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145 ngx_event_debug_connection,
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146 0,
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147 0,
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148 NULL },
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149
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150 ngx_null_command
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151 };
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152
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153
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154 ngx_event_module_t ngx_event_core_module_ctx = {
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155 &event_core_name,
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156 ngx_event_create_conf, /* create configuration */
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157 ngx_event_init_conf, /* init configuration */
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158
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159 { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }
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160 };
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161
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162
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163 ngx_module_t ngx_event_core_module = {
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164 NGX_MODULE,
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165 &ngx_event_core_module_ctx, /* module context */
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166 ngx_event_core_commands, /* module directives */
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167 NGX_EVENT_MODULE, /* module type */
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168 ngx_event_module_init, /* init module */
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169 ngx_event_process_init /* init process */
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170 };
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171
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172
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173 static ngx_int_t ngx_event_module_init(ngx_cycle_t *cycle)
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174 {
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10
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175 #if !(NGX_WIN32)
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0
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176
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22
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177 size_t size;
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178 void ***cf;
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179 char *shared;
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180 ngx_core_conf_t *ccf;
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181 ngx_event_conf_t *ecf;
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182
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183 cf = ngx_get_conf(cycle->conf_ctx, ngx_events_module);
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184
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185 if (cf == NULL) {
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186 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
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187 "no \"events\" section in configuration");
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188 return NGX_ERROR;
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189 }
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190
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191 ecf = (*cf)[ngx_event_core_module.ctx_index];
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192
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193 ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
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194 "using the \"%s\" event method", ecf->name);
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195
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0
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196
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197 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
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198
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199 if (ccf->master == 0 || ngx_accept_mutex_ptr) {
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200 return NGX_OK;
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201 }
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202
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203
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204 /* TODO: 128 is cache line size */
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205
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206 size = 128 /* ngx_accept_mutex */
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207 + 128; /* ngx_connection_counter */
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208
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209 #if (NGX_STAT_STUB)
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210
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211 size += 128 /* ngx_stat_accepted */
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212 + 128 /* ngx_stat_requests */
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213 + 128 /* ngx_stat_active */
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214 + 128 /* ngx_stat_reading */
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215 + 128; /* ngx_stat_writing */
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216
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217 #endif
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218
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219 if (!(shared = ngx_create_shared_memory(size, cycle->log))) {
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220 return NGX_ERROR;
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221 }
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222
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223 ngx_accept_mutex_ptr = (ngx_atomic_t *) shared;
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224 ngx_connection_counter = (ngx_atomic_t *) (shared + 128);
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225
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226 #if (NGX_STAT_STUB)
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227
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228 ngx_stat_accepted = (ngx_atomic_t *) (shared + 2 * 128);
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229 ngx_stat_requests = (ngx_atomic_t *) (shared + 3 * 128);
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230 ngx_stat_active = (ngx_atomic_t *) (shared + 4 * 128);
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231 ngx_stat_reading = (ngx_atomic_t *) (shared + 5 * 128);
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232 ngx_stat_writing = (ngx_atomic_t *) (shared + 6 * 128);
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233
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234 #endif
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235
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236 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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10
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237 "counter: %p, %d",
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0
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238 ngx_connection_counter, *ngx_connection_counter);
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239
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240 #endif
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241
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242 return NGX_OK;
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243 }
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244
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245
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246 static ngx_int_t ngx_event_process_init(ngx_cycle_t *cycle)
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247 {
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248 ngx_uint_t m, i;
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249 ngx_socket_t fd;
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250 ngx_event_t *rev, *wev;
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251 ngx_listening_t *s;
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252 ngx_connection_t *c;
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253 ngx_core_conf_t *ccf;
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254 ngx_event_conf_t *ecf;
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255 ngx_event_module_t *module;
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10
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256 #if (NGX_WIN32)
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0
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257 ngx_iocp_conf_t *iocpcf;
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258 #endif
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259
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260 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
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261 ecf = ngx_event_get_conf(cycle->conf_ctx, ngx_event_core_module);
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262
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263 if (ngx_accept_mutex_ptr && ccf->worker_processes > 1 && ecf->accept_mutex)
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264 {
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265 ngx_accept_mutex = ngx_accept_mutex_ptr;
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266 ngx_accept_mutex_held = 0;
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267 ngx_accept_mutex_delay = ecf->accept_mutex_delay;
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268 }
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269
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270 #if (NGX_THREADS)
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271 if (!(ngx_posted_events_mutex = ngx_mutex_init(cycle->log, 0))) {
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272 return NGX_ERROR;
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273 }
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274 #endif
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275
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276 if (ngx_event_timer_init(cycle->log) == NGX_ERROR) {
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277 return NGX_ERROR;
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278 }
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279
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280 cycle->connection_n = ecf->connections;
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281
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282 for (m = 0; ngx_modules[m]; m++) {
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283 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
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284 continue;
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285 }
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286
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287 if (ngx_modules[m]->ctx_index == ecf->use) {
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288 module = ngx_modules[m]->ctx;
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289 if (module->actions.init(cycle) == NGX_ERROR) {
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290 /* fatal */
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291 exit(2);
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292 }
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293 break;
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294 }
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295 }
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296
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297 cycle->connections = ngx_alloc(sizeof(ngx_connection_t) * ecf->connections,
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298 cycle->log);
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299 if (cycle->connections == NULL) {
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300 return NGX_ERROR;
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301 }
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302
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303 c = cycle->connections;
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304 for (i = 0; i < cycle->connection_n; i++) {
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305 c[i].fd = (ngx_socket_t) -1;
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306 c[i].data = NULL;
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307 #if (NGX_THREADS)
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308 c[i].lock = 0;
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309 #endif
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310 }
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311
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312 cycle->read_events = ngx_alloc(sizeof(ngx_event_t) * ecf->connections,
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313 cycle->log);
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314 if (cycle->read_events == NULL) {
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315 return NGX_ERROR;
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316 }
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317
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318 rev = cycle->read_events;
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319 for (i = 0; i < cycle->connection_n; i++) {
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320 rev[i].closed = 1;
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321 #if (NGX_THREADS)
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322 rev[i].lock = &c[i].lock;
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323 rev[i].own_lock = &c[i].lock;
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324 #endif
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325 }
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326
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327 cycle->write_events = ngx_alloc(sizeof(ngx_event_t) * ecf->connections,
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328 cycle->log);
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329 if (cycle->write_events == NULL) {
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330 return NGX_ERROR;
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331 }
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332
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333 wev = cycle->write_events;
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334 for (i = 0; i < cycle->connection_n; i++) {
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335 wev[i].closed = 1;
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336 #if (NGX_THREADS)
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337 wev[i].lock = &c[i].lock;
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338 wev[i].own_lock = &c[i].lock;
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339 #endif
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340 }
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341
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342 /* for each listening socket */
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343
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344 s = cycle->listening.elts;
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345 for (i = 0; i < cycle->listening.nelts; i++) {
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346
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347 fd = s[i].fd;
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348
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10
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349 #if (NGX_WIN32)
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0
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350 /*
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351 * Winsock assignes a socket number divisible by 4
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352 * so to find a connection we divide a socket number by 4.
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353 */
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354
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355 fd /= 4;
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356 #endif
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357
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358 c = &cycle->connections[fd];
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359 rev = &cycle->read_events[fd];
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360 wev = &cycle->write_events[fd];
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361
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362 ngx_memzero(c, sizeof(ngx_connection_t));
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363 ngx_memzero(rev, sizeof(ngx_event_t));
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364
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365 c->fd = s[i].fd;
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366 c->listening = &s[i];
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367
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368 c->ctx = s[i].ctx;
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369 c->servers = s[i].servers;
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370 c->log = s[i].log;
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371 c->read = rev;
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372
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373 /* required by iocp in "c->write->active = 1" */
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374 c->write = wev;
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375
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376 /* required by poll */
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377 wev->index = NGX_INVALID_INDEX;
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378
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379 rev->log = c->log;
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380 rev->data = c;
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381 rev->index = NGX_INVALID_INDEX;
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382
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383 rev->available = 0;
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384
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385 rev->accept = 1;
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386
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18
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387 #if (NGX_HAVE_DEFERRED_ACCEPT)
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0
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388 rev->deferred_accept = s[i].deferred_accept;
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389 #endif
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390
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391 if (!(ngx_event_flags & NGX_USE_IOCP_EVENT)) {
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392 if (s[i].remain) {
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393
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394 /*
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395 * delete the old accept events that were bound to
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396 * the old cycle read events array
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397 */
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398
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399 if (ngx_del_event(&cycle->old_cycle->read_events[fd],
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400 NGX_READ_EVENT, NGX_CLOSE_EVENT) == NGX_ERROR)
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401 {
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402 return NGX_ERROR;
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403 }
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404
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405 cycle->old_cycle->connections[fd].fd = (ngx_socket_t) -1;
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|
|
406 }
|
|
|
407 }
|
|
|
408
|
|
10
|
409 #if (NGX_WIN32)
|
|
0
|
410
|
|
|
411 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
|
|
10
|
412 rev->event_handler = ngx_event_acceptex;
|
|
0
|
413
|
|
|
414 if (ngx_add_event(rev, 0, NGX_IOCP_ACCEPT) == NGX_ERROR) {
|
|
|
415 return NGX_ERROR;
|
|
|
416 }
|
|
|
417
|
|
|
418 iocpcf = ngx_event_get_conf(cycle->conf_ctx, ngx_iocp_module);
|
|
|
419 if (ngx_event_post_acceptex(&s[i], iocpcf->post_acceptex)
|
|
|
420 == NGX_ERROR)
|
|
|
421 {
|
|
|
422 return NGX_ERROR;
|
|
|
423 }
|
|
|
424
|
|
|
425 } else {
|
|
10
|
426 rev->event_handler = ngx_event_accept;
|
|
|
427
|
|
0
|
428 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
429 return NGX_ERROR;
|
|
|
430 }
|
|
|
431 }
|
|
|
432
|
|
|
433 #else
|
|
|
434
|
|
10
|
435 rev->event_handler = ngx_event_accept;
|
|
0
|
436
|
|
|
437 if (ngx_accept_mutex) {
|
|
|
438 continue;
|
|
|
439 }
|
|
|
440
|
|
|
441 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
|
|
|
442 if (ngx_add_conn(c) == NGX_ERROR) {
|
|
|
443 return NGX_ERROR;
|
|
|
444 }
|
|
|
445
|
|
|
446 } else {
|
|
|
447 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
448 return NGX_ERROR;
|
|
|
449 }
|
|
|
450 }
|
|
|
451
|
|
|
452 #endif
|
|
|
453 }
|
|
|
454
|
|
|
455 return NGX_OK;
|
|
|
456 }
|
|
|
457
|
|
|
458
|
|
2
|
459 ngx_int_t ngx_send_lowat(ngx_connection_t *c, size_t lowat)
|
|
|
460 {
|
|
|
461 int sndlowat;
|
|
|
462
|
|
4
|
463 #if (NGX_HAVE_LOWAT_EVENT)
|
|
2
|
464
|
|
4
|
465 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
2
|
466 c->write->available = lowat;
|
|
|
467 return NGX_OK;
|
|
|
468 }
|
|
|
469
|
|
|
470 #endif
|
|
|
471
|
|
|
472 if (lowat == 0 || c->sndlowat) {
|
|
|
473 return NGX_OK;
|
|
|
474 }
|
|
|
475
|
|
|
476 sndlowat = (int) lowat;
|
|
|
477
|
|
|
478 if (setsockopt(c->fd, SOL_SOCKET, SO_SNDLOWAT,
|
|
|
479 (const void *) &sndlowat, sizeof(int)) == -1)
|
|
|
480 {
|
|
|
481 ngx_connection_error(c, ngx_socket_errno,
|
|
|
482 "setsockopt(SO_SNDLOWAT) failed");
|
|
|
483 return NGX_ERROR;
|
|
|
484 }
|
|
|
485
|
|
|
486 c->sndlowat = 1;
|
|
|
487
|
|
|
488 return NGX_OK;
|
|
|
489 }
|
|
|
490
|
|
|
491
|
|
0
|
492 static char *ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
493 {
|
|
|
494 int m;
|
|
|
495 char *rv;
|
|
|
496 void ***ctx;
|
|
|
497 ngx_conf_t pcf;
|
|
|
498 ngx_event_module_t *module;
|
|
|
499
|
|
|
500 /* count the number of the event modules and set up their indices */
|
|
|
501
|
|
|
502 ngx_event_max_module = 0;
|
|
|
503 for (m = 0; ngx_modules[m]; m++) {
|
|
|
504 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
505 continue;
|
|
|
506 }
|
|
|
507
|
|
|
508 ngx_modules[m]->ctx_index = ngx_event_max_module++;
|
|
|
509 }
|
|
|
510
|
|
|
511 ngx_test_null(ctx, ngx_pcalloc(cf->pool, sizeof(void *)), NGX_CONF_ERROR);
|
|
|
512
|
|
|
513 ngx_test_null(*ctx,
|
|
|
514 ngx_pcalloc(cf->pool, ngx_event_max_module * sizeof(void *)),
|
|
|
515 NGX_CONF_ERROR);
|
|
|
516
|
|
|
517 *(void **) conf = ctx;
|
|
|
518
|
|
|
519 for (m = 0; ngx_modules[m]; m++) {
|
|
|
520 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
521 continue;
|
|
|
522 }
|
|
|
523
|
|
|
524 module = ngx_modules[m]->ctx;
|
|
|
525
|
|
|
526 if (module->create_conf) {
|
|
|
527 ngx_test_null((*ctx)[ngx_modules[m]->ctx_index],
|
|
|
528 module->create_conf(cf->cycle),
|
|
|
529 NGX_CONF_ERROR);
|
|
|
530 }
|
|
|
531 }
|
|
|
532
|
|
|
533 pcf = *cf;
|
|
|
534 cf->ctx = ctx;
|
|
|
535 cf->module_type = NGX_EVENT_MODULE;
|
|
|
536 cf->cmd_type = NGX_EVENT_CONF;
|
|
|
537 rv = ngx_conf_parse(cf, NULL);
|
|
|
538 *cf = pcf;
|
|
|
539
|
|
|
540 if (rv != NGX_CONF_OK)
|
|
|
541 return rv;
|
|
|
542
|
|
|
543 for (m = 0; ngx_modules[m]; m++) {
|
|
|
544 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
545 continue;
|
|
|
546 }
|
|
|
547
|
|
|
548 module = ngx_modules[m]->ctx;
|
|
|
549
|
|
|
550 if (module->init_conf) {
|
|
|
551 rv = module->init_conf(cf->cycle,
|
|
|
552 (*ctx)[ngx_modules[m]->ctx_index]);
|
|
|
553 if (rv != NGX_CONF_OK) {
|
|
|
554 return rv;
|
|
|
555 }
|
|
|
556 }
|
|
|
557 }
|
|
|
558
|
|
|
559 return NGX_CONF_OK;
|
|
|
560 }
|
|
|
561
|
|
|
562
|
|
|
563 static char *ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
564 void *conf)
|
|
|
565 {
|
|
|
566 ngx_event_conf_t *ecf = conf;
|
|
|
567
|
|
|
568 ngx_str_t *value;
|
|
|
569
|
|
|
570 if (ecf->connections != NGX_CONF_UNSET_UINT) {
|
|
|
571 return "is duplicate" ;
|
|
|
572 }
|
|
|
573
|
|
|
574 value = cf->args->elts;
|
|
|
575 ecf->connections = ngx_atoi(value[1].data, value[1].len);
|
|
|
576 if (ecf->connections == (ngx_uint_t) NGX_ERROR) {
|
|
|
577 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
578 "invalid number \"%V\"", &value[1]);
|
|
0
|
579
|
|
|
580 return NGX_CONF_ERROR;
|
|
|
581 }
|
|
|
582
|
|
|
583 cf->cycle->connection_n = ecf->connections;
|
|
|
584
|
|
|
585 return NGX_CONF_OK;
|
|
|
586 }
|
|
|
587
|
|
|
588
|
|
|
589 static char *ngx_event_use(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
590 {
|
|
|
591 ngx_event_conf_t *ecf = conf;
|
|
|
592
|
|
|
593 ngx_int_t m;
|
|
|
594 ngx_str_t *value;
|
|
|
595 ngx_event_conf_t *old_ecf;
|
|
|
596 ngx_event_module_t *module;
|
|
|
597
|
|
|
598 if (ecf->use != NGX_CONF_UNSET_UINT) {
|
|
|
599 return "is duplicate" ;
|
|
|
600 }
|
|
|
601
|
|
|
602 value = cf->args->elts;
|
|
|
603
|
|
|
604 if (cf->cycle->old_cycle->conf_ctx) {
|
|
|
605 old_ecf = ngx_event_get_conf(cf->cycle->old_cycle->conf_ctx,
|
|
|
606 ngx_event_core_module);
|
|
|
607 } else {
|
|
|
608 old_ecf = NULL;
|
|
|
609 }
|
|
|
610
|
|
|
611
|
|
|
612 for (m = 0; ngx_modules[m]; m++) {
|
|
|
613 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
614 continue;
|
|
|
615 }
|
|
|
616
|
|
|
617 module = ngx_modules[m]->ctx;
|
|
|
618 if (module->name->len == value[1].len) {
|
|
|
619 if (ngx_strcmp(module->name->data, value[1].data) == 0) {
|
|
|
620 ecf->use = ngx_modules[m]->ctx_index;
|
|
|
621 ecf->name = module->name->data;
|
|
|
622
|
|
|
623 if (ngx_process == NGX_PROCESS_SINGLE
|
|
|
624 && old_ecf
|
|
|
625 && old_ecf->use != ecf->use)
|
|
|
626 {
|
|
|
627 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
16
|
628 "when the server runs without a master process "
|
|
|
629 "the \"%V\" event type must be the same as "
|
|
|
630 "in previous configuration - \"%s\" "
|
|
|
631 "and it can not be changed on the fly, "
|
|
|
632 "to change it you need to stop server "
|
|
|
633 "and start it again",
|
|
|
634 &value[1], old_ecf->name);
|
|
0
|
635
|
|
|
636 return NGX_CONF_ERROR;
|
|
|
637 }
|
|
|
638
|
|
|
639 return NGX_CONF_OK;
|
|
|
640 }
|
|
|
641 }
|
|
|
642 }
|
|
|
643
|
|
|
644 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
645 "invalid event type \"%V\"", &value[1]);
|
|
0
|
646
|
|
|
647 return NGX_CONF_ERROR;
|
|
|
648 }
|
|
|
649
|
|
|
650
|
|
|
651 static char *ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
652 void *conf)
|
|
|
653 {
|
|
|
654 #if (NGX_DEBUG)
|
|
|
655 ngx_event_conf_t *ecf = conf;
|
|
|
656
|
|
|
657 in_addr_t *addr;
|
|
|
658 ngx_str_t *value;
|
|
|
659 struct hostent *h;
|
|
|
660
|
|
|
661 value = cf->args->elts;
|
|
|
662
|
|
|
663 /* AF_INET only */
|
|
|
664
|
|
|
665 if (!(addr = ngx_push_array(&ecf->debug_connection))) {
|
|
|
666 return NGX_CONF_ERROR;
|
|
|
667 }
|
|
|
668
|
|
|
669 *addr = inet_addr((char *) value[1].data);
|
|
|
670
|
|
|
671 if (*addr != INADDR_NONE) {
|
|
|
672 return NGX_OK;
|
|
|
673 }
|
|
|
674
|
|
|
675 h = gethostbyname((char *) value[1].data);
|
|
|
676
|
|
|
677 if (h == NULL || h->h_addr_list[0] == NULL) {
|
|
|
678 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
679 "host \"%s\" not found", value[1].data);
|
|
0
|
680 return NGX_CONF_ERROR;
|
|
|
681 }
|
|
|
682
|
|
|
683 *addr = *(in_addr_t *)(h->h_addr_list[0]);
|
|
|
684
|
|
|
685 #else
|
|
|
686
|
|
|
687 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
688 "\"debug_connection\" is ignored, you need to rebuild "
|
|
|
689 "nginx using --with-debug option to enable it");
|
|
|
690
|
|
|
691 #endif
|
|
|
692
|
|
|
693 return NGX_OK;
|
|
|
694 }
|
|
|
695
|
|
|
696
|
|
|
697 static void *ngx_event_create_conf(ngx_cycle_t *cycle)
|
|
|
698 {
|
|
|
699 ngx_event_conf_t *ecf;
|
|
|
700
|
|
|
701 ngx_test_null(ecf, ngx_palloc(cycle->pool, sizeof(ngx_event_conf_t)),
|
|
|
702 NGX_CONF_ERROR);
|
|
|
703
|
|
|
704 ecf->connections = NGX_CONF_UNSET_UINT;
|
|
|
705 ecf->use = NGX_CONF_UNSET_UINT;
|
|
|
706 ecf->multi_accept = NGX_CONF_UNSET;
|
|
|
707 ecf->accept_mutex = NGX_CONF_UNSET;
|
|
|
708 ecf->accept_mutex_delay = NGX_CONF_UNSET_MSEC;
|
|
|
709 ecf->name = (void *) NGX_CONF_UNSET;
|
|
|
710
|
|
|
711 #if (NGX_DEBUG)
|
|
|
712 ngx_init_array(ecf->debug_connection, cycle->pool, 5, sizeof(in_addr_t),
|
|
|
713 NGX_CONF_ERROR);
|
|
|
714 #endif
|
|
|
715
|
|
|
716 return ecf;
|
|
|
717 }
|
|
|
718
|
|
|
719
|
|
|
720 static char *ngx_event_init_conf(ngx_cycle_t *cycle, void *conf)
|
|
|
721 {
|
|
|
722 ngx_event_conf_t *ecf = conf;
|
|
16
|
723
|
|
|
724 int fd, rtsig;
|
|
|
725 ngx_int_t i, connections;
|
|
|
726 ngx_module_t *module;
|
|
|
727 ngx_core_conf_t *ccf;
|
|
|
728 ngx_event_module_t *event_module;
|
|
|
729
|
|
|
730 connections = NGX_CONF_UNSET_UINT;
|
|
|
731 module = NULL;
|
|
|
732 rtsig = 0;
|
|
|
733 fd = 0;
|
|
|
734
|
|
18
|
735 #if (NGX_HAVE_EPOLL) && !(NGX_TEST_BUILD_EPOLL)
|
|
16
|
736
|
|
|
737 fd = epoll_create(100);
|
|
|
738
|
|
|
739 if (fd != -1) {
|
|
|
740 close(fd);
|
|
|
741 connections = DEFAULT_CONNECTIONS;
|
|
|
742 module = &ngx_epoll_module;
|
|
|
743
|
|
|
744 } else if (ngx_errno != NGX_ENOSYS) {
|
|
|
745 connections = DEFAULT_CONNECTIONS;
|
|
|
746 module = &ngx_epoll_module;
|
|
|
747 }
|
|
|
748
|
|
|
749 #endif
|
|
|
750
|
|
18
|
751 #if (NGX_HAVE_RTSIG)
|
|
16
|
752
|
|
|
753 if (module == NULL) {
|
|
|
754 connections = DEFAULT_CONNECTIONS;
|
|
|
755 module = &ngx_rtsig_module;
|
|
|
756 rtsig = 1;
|
|
|
757 }
|
|
|
758
|
|
|
759 #endif
|
|
|
760
|
|
18
|
761 #if (NGX_HAVE_DEVPOLL)
|
|
16
|
762
|
|
|
763 connections = DEFAULT_CONNECTIONS;
|
|
|
764 module = &ngx_devpoll_module;
|
|
|
765
|
|
0
|
766 #endif
|
|
|
767
|
|
18
|
768 #if (NGX_HAVE_KQUEUE)
|
|
0
|
769
|
|
16
|
770 connections = DEFAULT_CONNECTIONS;
|
|
|
771 module = &ngx_kqueue_module;
|
|
0
|
772
|
|
16
|
773 #endif
|
|
0
|
774
|
|
18
|
775 #if (NGX_HAVE_SELECT)
|
|
0
|
776
|
|
16
|
777 if (module == NULL) {
|
|
0
|
778
|
|
10
|
779 #if (NGX_WIN32)
|
|
16
|
780 connections = DEFAULT_CONNECTIONS;
|
|
0
|
781 #else
|
|
16
|
782 connections = FD_SETSIZE < DEFAULT_CONNECTIONS ? FD_SETSIZE:
|
|
|
783 DEFAULT_CONNECTIONS;
|
|
|
784 #endif
|
|
|
785 module = &ngx_select_module;
|
|
|
786 }
|
|
|
787
|
|
0
|
788 #endif
|
|
|
789
|
|
16
|
790 if (module == NULL) {
|
|
|
791 for (i = 0; ngx_modules[i]; i++) {
|
|
|
792 if (ngx_modules[i]->type == NGX_EVENT_MODULE) {
|
|
|
793 event_module = ngx_modules[i]->ctx;
|
|
0
|
794
|
|
16
|
795 if (ngx_strcmp(event_module->name->data, event_core_name.data)
|
|
|
796 == 0)
|
|
|
797 {
|
|
|
798 continue;
|
|
|
799 }
|
|
0
|
800
|
|
16
|
801 module = ngx_modules[i];
|
|
|
802 break;
|
|
0
|
803 }
|
|
|
804 }
|
|
|
805 }
|
|
|
806
|
|
16
|
807 if (module == NULL) {
|
|
0
|
808 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0, "no events module found");
|
|
|
809 return NGX_CONF_ERROR;
|
|
|
810 }
|
|
|
811
|
|
16
|
812 ngx_conf_init_unsigned_value(ecf->connections, connections);
|
|
|
813 cycle->connection_n = ecf->connections;
|
|
0
|
814
|
|
16
|
815 ngx_conf_init_unsigned_value(ecf->use, module->ctx_index);
|
|
0
|
816
|
|
16
|
817 event_module = module->ctx;
|
|
|
818 ngx_conf_init_ptr_value(ecf->name, event_module->name->data);
|
|
0
|
819
|
|
|
820 ngx_conf_init_value(ecf->multi_accept, 0);
|
|
|
821 ngx_conf_init_value(ecf->accept_mutex, 1);
|
|
|
822 ngx_conf_init_msec_value(ecf->accept_mutex_delay, 500);
|
|
|
823
|
|
16
|
824
|
|
|
825 if (!rtsig || ecf->accept_mutex) {
|
|
|
826 return NGX_CONF_OK;
|
|
0
|
827 }
|
|
16
|
828
|
|
|
829 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
|
|
0
|
830
|
|
16
|
831 if (ccf->worker_processes == 0) {
|
|
|
832 return NGX_CONF_OK;
|
|
|
833 }
|
|
|
834
|
|
|
835 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
|
|
|
836 "the \"rtsig\" method requires \"accept_mutex\" to be on");
|
|
|
837
|
|
|
838 return NGX_CONF_ERROR;
|
|
0
|
839 }
|
|
|
840
|
|
|
841
|
|
|
842 static char *ngx_accept_mutex_check(ngx_conf_t *cf, void *post, void *data)
|
|
|
843 {
|
|
|
844 #if !(NGX_HAVE_ATOMIC_OPS)
|
|
|
845
|
|
|
846 ngx_flag_t *fp = data;
|
|
|
847
|
|
|
848 *fp = 0;
|
|
|
849
|
|
|
850 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
851 "\"accept_mutex\" is not supported, ignored");
|
|
|
852
|
|
|
853 #endif
|
|
|
854
|
|
|
855 return NGX_CONF_OK;
|
|
|
856 }
|
