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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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15 extern ngx_module_t ngx_select_module;
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16 extern ngx_event_module_t ngx_select_module_ctx;
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17
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18 #if (HAVE_KQUEUE)
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19 #include <ngx_kqueue_module.h>
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20 #endif
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21
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22 #if (HAVE_DEVPOLL)
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23 extern ngx_module_t ngx_devpoll_module;
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24 extern ngx_event_module_t ngx_devpoll_module_ctx;
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25 #endif
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26
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27 #if (HAVE_EPOLL)
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28 extern ngx_module_t ngx_epoll_module;
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29 extern ngx_event_module_t ngx_epoll_module_ctx;
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30 #endif
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31
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32 #if (HAVE_RTSIG)
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33 extern ngx_module_t ngx_rtsig_module;
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34 extern ngx_event_module_t ngx_rtsig_module_ctx;
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35 #endif
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36
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37 #if (HAVE_AIO)
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38 #include <ngx_aio_module.h>
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39 #endif
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40
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41 static ngx_int_t ngx_event_module_init(ngx_cycle_t *cycle);
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42 static ngx_int_t ngx_event_process_init(ngx_cycle_t *cycle);
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43 static char *ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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44
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45 static char *ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd,
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46 void *conf);
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47 static char *ngx_event_use(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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48 static char *ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd,
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49 void *conf);
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50
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51 static void *ngx_event_create_conf(ngx_cycle_t *cycle);
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52 static char *ngx_event_init_conf(ngx_cycle_t *cycle, void *conf);
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53 static char *ngx_accept_mutex_check(ngx_conf_t *cf, void *post, void *data);
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54
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55
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56 static ngx_uint_t ngx_event_max_module;
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57
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58 ngx_uint_t ngx_event_flags;
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59 ngx_event_actions_t ngx_event_actions;
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60
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61
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62 ngx_atomic_t connection_counter;
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63 ngx_atomic_t *ngx_connection_counter = &connection_counter;
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64
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65
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66 ngx_atomic_t *ngx_accept_mutex_ptr;
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67 ngx_atomic_t *ngx_accept_mutex;
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68 ngx_uint_t ngx_accept_mutex_held;
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69 ngx_msec_t ngx_accept_mutex_delay;
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70 ngx_int_t ngx_accept_disabled;
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71
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72
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73 #if (NGX_STAT_STUB)
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74
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75 ngx_atomic_t ngx_stat_accepted0;
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76 ngx_atomic_t *ngx_stat_accepted = &ngx_stat_accepted0;
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77 ngx_atomic_t ngx_stat_requests0;
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78 ngx_atomic_t *ngx_stat_requests = &ngx_stat_requests0;
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79 ngx_atomic_t ngx_stat_active0;
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80 ngx_atomic_t *ngx_stat_active = &ngx_stat_active0;
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81 ngx_atomic_t ngx_stat_reading0;
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82 ngx_atomic_t *ngx_stat_reading = &ngx_stat_reading0;
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83 ngx_atomic_t ngx_stat_writing0;
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84 ngx_atomic_t *ngx_stat_writing = &ngx_stat_reading0;
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85
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86 #endif
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87
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88
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89
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90 static ngx_command_t ngx_events_commands[] = {
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91
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92 { ngx_string("events"),
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93 NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
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94 ngx_events_block,
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95 0,
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96 0,
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97 NULL },
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98
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99 ngx_null_command
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100 };
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101
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102
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103 static ngx_core_module_t ngx_events_module_ctx = {
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104 ngx_string("events"),
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105 NULL,
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106 NULL
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107 };
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108
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109
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110 ngx_module_t ngx_events_module = {
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111 NGX_MODULE,
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112 &ngx_events_module_ctx, /* module context */
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113 ngx_events_commands, /* module directives */
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114 NGX_CORE_MODULE, /* module type */
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115 NULL, /* init module */
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116 NULL /* init process */
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117 };
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118
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119
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120 static ngx_str_t event_core_name = ngx_string("event_core");
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121
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122 static ngx_conf_post_t ngx_accept_mutex_post = { ngx_accept_mutex_check } ;
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123
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124
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125 static ngx_command_t ngx_event_core_commands[] = {
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126
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127 { ngx_string("connections"),
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128 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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129 ngx_event_connections,
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130 0,
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131 0,
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132 NULL },
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133
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134 { ngx_string("use"),
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135 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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136 ngx_event_use,
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137 0,
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138 0,
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139 NULL },
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140
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141 { ngx_string("multi_accept"),
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142 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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143 ngx_conf_set_flag_slot,
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144 0,
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145 offsetof(ngx_event_conf_t, multi_accept),
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146 NULL },
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147
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148 { ngx_string("accept_mutex"),
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149 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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150 ngx_conf_set_flag_slot,
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151 0,
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152 offsetof(ngx_event_conf_t, accept_mutex),
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153 &ngx_accept_mutex_post },
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154
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155 { ngx_string("accept_mutex_delay"),
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156 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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157 ngx_conf_set_msec_slot,
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158 0,
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159 offsetof(ngx_event_conf_t, accept_mutex_delay),
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160 NULL },
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161
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162 { ngx_string("debug_connection"),
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163 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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164 ngx_event_debug_connection,
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165 0,
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166 0,
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167 NULL },
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168
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169 ngx_null_command
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170 };
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171
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172
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173 ngx_event_module_t ngx_event_core_module_ctx = {
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174 &event_core_name,
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175 ngx_event_create_conf, /* create configuration */
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176 ngx_event_init_conf, /* init configuration */
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177
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178 { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }
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179 };
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180
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181
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182 ngx_module_t ngx_event_core_module = {
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183 NGX_MODULE,
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184 &ngx_event_core_module_ctx, /* module context */
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185 ngx_event_core_commands, /* module directives */
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186 NGX_EVENT_MODULE, /* module type */
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187 ngx_event_module_init, /* init module */
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188 ngx_event_process_init /* init process */
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189 };
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190
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191
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192 static ngx_int_t ngx_event_module_init(ngx_cycle_t *cycle)
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193 {
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194 #if !(WIN32)
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195
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196 size_t size;
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197 char *shared;
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198 ngx_core_conf_t *ccf;
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199 ngx_event_conf_t *ecf;
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200
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201 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
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202
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203 if (ccf->master == 0 || ngx_accept_mutex_ptr) {
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204 return NGX_OK;
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205 }
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206
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207 ecf = ngx_event_get_conf(cycle->conf_ctx, ngx_event_core_module);
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208
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209
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210 /* TODO: 128 is cache line size */
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211
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212 size = 128 /* ngx_accept_mutex */
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213 + 128; /* ngx_connection_counter */
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214
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215 #if (NGX_STAT_STUB)
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216
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217 size += 128 /* ngx_stat_accepted */
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218 + 128 /* ngx_stat_requests */
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219 + 128 /* ngx_stat_active */
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220 + 128 /* ngx_stat_reading */
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221 + 128; /* ngx_stat_writing */
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222
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223 #endif
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224
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225 if (!(shared = ngx_create_shared_memory(size, cycle->log))) {
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226 return NGX_ERROR;
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227 }
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228
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229 ngx_accept_mutex_ptr = (ngx_atomic_t *) shared;
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230 ngx_connection_counter = (ngx_atomic_t *) (shared + 128);
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231
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232 #if (NGX_STAT_STUB)
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233
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234 ngx_stat_accepted = (ngx_atomic_t *) (shared + 2 * 128);
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235 ngx_stat_requests = (ngx_atomic_t *) (shared + 3 * 128);
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236 ngx_stat_active = (ngx_atomic_t *) (shared + 4 * 128);
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237 ngx_stat_reading = (ngx_atomic_t *) (shared + 5 * 128);
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238 ngx_stat_writing = (ngx_atomic_t *) (shared + 6 * 128);
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239
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240 #endif
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241
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242 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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243 "counter: " PTR_FMT ", %d",
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244 ngx_connection_counter, *ngx_connection_counter);
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245
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246 #endif
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247
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248 return NGX_OK;
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249 }
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250
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251
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252 static ngx_int_t ngx_event_process_init(ngx_cycle_t *cycle)
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253 {
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254 ngx_uint_t m, i;
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255 ngx_socket_t fd;
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256 ngx_event_t *rev, *wev;
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257 ngx_listening_t *s;
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258 ngx_connection_t *c;
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259 ngx_core_conf_t *ccf;
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260 ngx_event_conf_t *ecf;
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261 ngx_event_module_t *module;
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262 #if (WIN32)
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263 ngx_iocp_conf_t *iocpcf;
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264 #endif
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265
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266 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
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267 ecf = ngx_event_get_conf(cycle->conf_ctx, ngx_event_core_module);
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268
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269 if (ngx_accept_mutex_ptr && ccf->worker_processes > 1 && ecf->accept_mutex)
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270 {
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271 ngx_accept_mutex = ngx_accept_mutex_ptr;
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272 ngx_accept_mutex_held = 0;
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273 ngx_accept_mutex_delay = ecf->accept_mutex_delay;
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274 }
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275
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276 #if (NGX_THREADS)
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277 if (!(ngx_posted_events_mutex = ngx_mutex_init(cycle->log, 0))) {
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278 return NGX_ERROR;
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279 }
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280 #endif
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281
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282 if (ngx_event_timer_init(cycle->log) == NGX_ERROR) {
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283 return NGX_ERROR;
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284 }
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285
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286 cycle->connection_n = ecf->connections;
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287
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288 for (m = 0; ngx_modules[m]; m++) {
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289 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
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290 continue;
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291 }
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292
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293 if (ngx_modules[m]->ctx_index == ecf->use) {
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294 module = ngx_modules[m]->ctx;
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295 if (module->actions.init(cycle) == NGX_ERROR) {
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296 /* fatal */
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297 exit(2);
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298 }
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299 break;
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300 }
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301 }
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302
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303 cycle->connections = ngx_alloc(sizeof(ngx_connection_t) * ecf->connections,
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304 cycle->log);
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305 if (cycle->connections == NULL) {
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306 return NGX_ERROR;
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307 }
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308
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309 c = cycle->connections;
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310 for (i = 0; i < cycle->connection_n; i++) {
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311 c[i].fd = (ngx_socket_t) -1;
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312 c[i].data = NULL;
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313 #if (NGX_THREADS)
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314 c[i].lock = 0;
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315 #endif
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316 }
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317
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318 cycle->read_events = ngx_alloc(sizeof(ngx_event_t) * ecf->connections,
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319 cycle->log);
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320 if (cycle->read_events == NULL) {
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321 return NGX_ERROR;
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322 }
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323
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324 rev = cycle->read_events;
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325 for (i = 0; i < cycle->connection_n; i++) {
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326 rev[i].closed = 1;
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327 #if (NGX_THREADS)
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328 rev[i].lock = &c[i].lock;
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329 rev[i].own_lock = &c[i].lock;
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330 #endif
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331 }
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332
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333 cycle->write_events = ngx_alloc(sizeof(ngx_event_t) * ecf->connections,
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334 cycle->log);
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335 if (cycle->write_events == NULL) {
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336 return NGX_ERROR;
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337 }
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338
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339 wev = cycle->write_events;
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340 for (i = 0; i < cycle->connection_n; i++) {
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341 wev[i].closed = 1;
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342 #if (NGX_THREADS)
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343 wev[i].lock = &c[i].lock;
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344 wev[i].own_lock = &c[i].lock;
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345 #endif
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346 }
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347
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348 /* for each listening socket */
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349
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350 s = cycle->listening.elts;
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351 for (i = 0; i < cycle->listening.nelts; i++) {
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352
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353 fd = s[i].fd;
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354
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355 #if (WIN32)
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356 /*
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357 * Winsock assignes a socket number divisible by 4
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358 * so to find a connection we divide a socket number by 4.
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359 */
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360
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361 fd /= 4;
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362 #endif
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363
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364 c = &cycle->connections[fd];
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365 rev = &cycle->read_events[fd];
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366 wev = &cycle->write_events[fd];
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367
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368 ngx_memzero(c, sizeof(ngx_connection_t));
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369 ngx_memzero(rev, sizeof(ngx_event_t));
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370
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371 c->fd = s[i].fd;
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372 c->listening = &s[i];
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373
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374 c->ctx = s[i].ctx;
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375 c->servers = s[i].servers;
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376 c->log = s[i].log;
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377 c->read = rev;
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378
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379 /* required by iocp in "c->write->active = 1" */
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380 c->write = wev;
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381
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382 /* required by poll */
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383 wev->index = NGX_INVALID_INDEX;
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384
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385 rev->log = c->log;
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386 rev->data = c;
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387 rev->index = NGX_INVALID_INDEX;
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388
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389 rev->available = 0;
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390
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391 rev->accept = 1;
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392
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393 #if (HAVE_DEFERRED_ACCEPT)
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394 rev->deferred_accept = s[i].deferred_accept;
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395 #endif
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396
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397 if (!(ngx_event_flags & NGX_USE_IOCP_EVENT)) {
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398 if (s[i].remain) {
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399
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400 /*
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401 * delete the old accept events that were bound to
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402 * the old cycle read events array
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403 */
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404
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405 if (ngx_del_event(&cycle->old_cycle->read_events[fd],
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406 NGX_READ_EVENT, NGX_CLOSE_EVENT) == NGX_ERROR)
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407 {
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408 return NGX_ERROR;
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|
409 }
|
|
|
410
|
|
|
411 cycle->old_cycle->connections[fd].fd = (ngx_socket_t) -1;
|
|
|
412 }
|
|
|
413 }
|
|
|
414
|
|
|
415 #if (WIN32)
|
|
|
416
|
|
|
417 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
|
|
|
418 rev->event_handler = &ngx_event_acceptex;
|
|
|
419
|
|
|
420 if (ngx_add_event(rev, 0, NGX_IOCP_ACCEPT) == NGX_ERROR) {
|
|
|
421 return NGX_ERROR;
|
|
|
422 }
|
|
|
423
|
|
|
424 iocpcf = ngx_event_get_conf(cycle->conf_ctx, ngx_iocp_module);
|
|
|
425 if (ngx_event_post_acceptex(&s[i], iocpcf->post_acceptex)
|
|
|
426 == NGX_ERROR)
|
|
|
427 {
|
|
|
428 return NGX_ERROR;
|
|
|
429 }
|
|
|
430
|
|
|
431 } else {
|
|
|
432 rev->event_handler = &ngx_event_accept;
|
|
|
433 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
434 return NGX_ERROR;
|
|
|
435 }
|
|
|
436 }
|
|
|
437
|
|
|
438 #else
|
|
|
439
|
|
|
440 rev->event_handler = &ngx_event_accept;
|
|
|
441
|
|
|
442 if (ngx_accept_mutex) {
|
|
|
443 continue;
|
|
|
444 }
|
|
|
445
|
|
|
446 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
|
|
|
447 if (ngx_add_conn(c) == NGX_ERROR) {
|
|
|
448 return NGX_ERROR;
|
|
|
449 }
|
|
|
450
|
|
|
451 } else {
|
|
|
452 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
453 return NGX_ERROR;
|
|
|
454 }
|
|
|
455 }
|
|
|
456
|
|
|
457 #endif
|
|
|
458 }
|
|
|
459
|
|
|
460 return NGX_OK;
|
|
|
461 }
|
|
|
462
|
|
|
463
|
|
2
|
464 ngx_int_t ngx_send_lowat(ngx_connection_t *c, size_t lowat)
|
|
|
465 {
|
|
|
466 int sndlowat;
|
|
|
467
|
|
|
468 #if (HAVE_LOWAT_EVENT)
|
|
|
469
|
|
|
470 if (ngx_event_flags & NGX_HAVE_KQUEUE_EVENT) {
|
|
|
471 c->write->available = lowat;
|
|
|
472 return NGX_OK;
|
|
|
473 }
|
|
|
474
|
|
|
475 #endif
|
|
|
476
|
|
|
477 if (lowat == 0 || c->sndlowat) {
|
|
|
478 return NGX_OK;
|
|
|
479 }
|
|
|
480
|
|
|
481 sndlowat = (int) lowat;
|
|
|
482
|
|
|
483 if (setsockopt(c->fd, SOL_SOCKET, SO_SNDLOWAT,
|
|
|
484 (const void *) &sndlowat, sizeof(int)) == -1)
|
|
|
485 {
|
|
|
486 ngx_connection_error(c, ngx_socket_errno,
|
|
|
487 "setsockopt(SO_SNDLOWAT) failed");
|
|
|
488 return NGX_ERROR;
|
|
|
489 }
|
|
|
490
|
|
|
491 c->sndlowat = 1;
|
|
|
492
|
|
|
493 return NGX_OK;
|
|
|
494 }
|
|
|
495
|
|
|
496
|
|
0
|
497 static char *ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
498 {
|
|
|
499 int m;
|
|
|
500 char *rv;
|
|
|
501 void ***ctx;
|
|
|
502 ngx_conf_t pcf;
|
|
|
503 ngx_event_module_t *module;
|
|
|
504
|
|
|
505 /* count the number of the event modules and set up their indices */
|
|
|
506
|
|
|
507 ngx_event_max_module = 0;
|
|
|
508 for (m = 0; ngx_modules[m]; m++) {
|
|
|
509 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
510 continue;
|
|
|
511 }
|
|
|
512
|
|
|
513 ngx_modules[m]->ctx_index = ngx_event_max_module++;
|
|
|
514 }
|
|
|
515
|
|
|
516 ngx_test_null(ctx, ngx_pcalloc(cf->pool, sizeof(void *)), NGX_CONF_ERROR);
|
|
|
517
|
|
|
518 ngx_test_null(*ctx,
|
|
|
519 ngx_pcalloc(cf->pool, ngx_event_max_module * sizeof(void *)),
|
|
|
520 NGX_CONF_ERROR);
|
|
|
521
|
|
|
522 *(void **) conf = ctx;
|
|
|
523
|
|
|
524 for (m = 0; ngx_modules[m]; m++) {
|
|
|
525 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
526 continue;
|
|
|
527 }
|
|
|
528
|
|
|
529 module = ngx_modules[m]->ctx;
|
|
|
530
|
|
|
531 if (module->create_conf) {
|
|
|
532 ngx_test_null((*ctx)[ngx_modules[m]->ctx_index],
|
|
|
533 module->create_conf(cf->cycle),
|
|
|
534 NGX_CONF_ERROR);
|
|
|
535 }
|
|
|
536 }
|
|
|
537
|
|
|
538 pcf = *cf;
|
|
|
539 cf->ctx = ctx;
|
|
|
540 cf->module_type = NGX_EVENT_MODULE;
|
|
|
541 cf->cmd_type = NGX_EVENT_CONF;
|
|
|
542 rv = ngx_conf_parse(cf, NULL);
|
|
|
543 *cf = pcf;
|
|
|
544
|
|
|
545 if (rv != NGX_CONF_OK)
|
|
|
546 return rv;
|
|
|
547
|
|
|
548 for (m = 0; ngx_modules[m]; m++) {
|
|
|
549 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
550 continue;
|
|
|
551 }
|
|
|
552
|
|
|
553 module = ngx_modules[m]->ctx;
|
|
|
554
|
|
|
555 if (module->init_conf) {
|
|
|
556 rv = module->init_conf(cf->cycle,
|
|
|
557 (*ctx)[ngx_modules[m]->ctx_index]);
|
|
|
558 if (rv != NGX_CONF_OK) {
|
|
|
559 return rv;
|
|
|
560 }
|
|
|
561 }
|
|
|
562 }
|
|
|
563
|
|
|
564 return NGX_CONF_OK;
|
|
|
565 }
|
|
|
566
|
|
|
567
|
|
|
568 static char *ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
569 void *conf)
|
|
|
570 {
|
|
|
571 ngx_event_conf_t *ecf = conf;
|
|
|
572
|
|
|
573 ngx_str_t *value;
|
|
|
574
|
|
|
575 if (ecf->connections != NGX_CONF_UNSET_UINT) {
|
|
|
576 return "is duplicate" ;
|
|
|
577 }
|
|
|
578
|
|
|
579 value = cf->args->elts;
|
|
|
580 ecf->connections = ngx_atoi(value[1].data, value[1].len);
|
|
|
581 if (ecf->connections == (ngx_uint_t) NGX_ERROR) {
|
|
|
582 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
583 "invalid number \"%s\"", value[1].data);
|
|
|
584
|
|
|
585 return NGX_CONF_ERROR;
|
|
|
586 }
|
|
|
587
|
|
|
588 cf->cycle->connection_n = ecf->connections;
|
|
|
589
|
|
|
590 return NGX_CONF_OK;
|
|
|
591 }
|
|
|
592
|
|
|
593
|
|
|
594 static char *ngx_event_use(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
595 {
|
|
|
596 ngx_event_conf_t *ecf = conf;
|
|
|
597
|
|
|
598 ngx_int_t m;
|
|
|
599 ngx_str_t *value;
|
|
|
600 ngx_event_conf_t *old_ecf;
|
|
|
601 ngx_event_module_t *module;
|
|
|
602
|
|
|
603 if (ecf->use != NGX_CONF_UNSET_UINT) {
|
|
|
604 return "is duplicate" ;
|
|
|
605 }
|
|
|
606
|
|
|
607 value = cf->args->elts;
|
|
|
608
|
|
|
609 if (cf->cycle->old_cycle->conf_ctx) {
|
|
|
610 old_ecf = ngx_event_get_conf(cf->cycle->old_cycle->conf_ctx,
|
|
|
611 ngx_event_core_module);
|
|
|
612 } else {
|
|
|
613 old_ecf = NULL;
|
|
|
614 }
|
|
|
615
|
|
|
616
|
|
|
617 for (m = 0; ngx_modules[m]; m++) {
|
|
|
618 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
619 continue;
|
|
|
620 }
|
|
|
621
|
|
|
622 module = ngx_modules[m]->ctx;
|
|
|
623 if (module->name->len == value[1].len) {
|
|
|
624 if (ngx_strcmp(module->name->data, value[1].data) == 0) {
|
|
|
625 ecf->use = ngx_modules[m]->ctx_index;
|
|
|
626 ecf->name = module->name->data;
|
|
|
627
|
|
|
628 if (ngx_process == NGX_PROCESS_SINGLE
|
|
|
629 && old_ecf
|
|
|
630 && old_ecf->use != ecf->use)
|
|
|
631 {
|
|
|
632 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
633 "when the server runs without a master process "
|
|
|
634 "the \"%s\" event type must be the same as "
|
|
|
635 "in previous configuration - \"%s\" "
|
|
|
636 "and it can not be changed on the fly, "
|
|
|
637 "to change it you need to stop server "
|
|
|
638 "and start it again",
|
|
|
639 value[1].data, old_ecf->name);
|
|
|
640
|
|
|
641 return NGX_CONF_ERROR;
|
|
|
642 }
|
|
|
643
|
|
|
644 return NGX_CONF_OK;
|
|
|
645 }
|
|
|
646 }
|
|
|
647 }
|
|
|
648
|
|
|
649 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
650 "invalid event type \"%s\"", value[1].data);
|
|
|
651
|
|
|
652 return NGX_CONF_ERROR;
|
|
|
653 }
|
|
|
654
|
|
|
655
|
|
|
656 static char *ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
657 void *conf)
|
|
|
658 {
|
|
|
659 #if (NGX_DEBUG)
|
|
|
660 ngx_event_conf_t *ecf = conf;
|
|
|
661
|
|
|
662 in_addr_t *addr;
|
|
|
663 ngx_str_t *value;
|
|
|
664 struct hostent *h;
|
|
|
665
|
|
|
666 value = cf->args->elts;
|
|
|
667
|
|
|
668 /* AF_INET only */
|
|
|
669
|
|
|
670 if (!(addr = ngx_push_array(&ecf->debug_connection))) {
|
|
|
671 return NGX_CONF_ERROR;
|
|
|
672 }
|
|
|
673
|
|
|
674 *addr = inet_addr((char *) value[1].data);
|
|
|
675
|
|
|
676 if (*addr != INADDR_NONE) {
|
|
|
677 return NGX_OK;
|
|
|
678 }
|
|
|
679
|
|
|
680 h = gethostbyname((char *) value[1].data);
|
|
|
681
|
|
|
682 if (h == NULL || h->h_addr_list[0] == NULL) {
|
|
|
683 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
684 "host %s not found", value[1].data);
|
|
|
685 return NGX_CONF_ERROR;
|
|
|
686 }
|
|
|
687
|
|
|
688 *addr = *(in_addr_t *)(h->h_addr_list[0]);
|
|
|
689
|
|
|
690 #else
|
|
|
691
|
|
|
692 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
693 "\"debug_connection\" is ignored, you need to rebuild "
|
|
|
694 "nginx using --with-debug option to enable it");
|
|
|
695
|
|
|
696 #endif
|
|
|
697
|
|
|
698 return NGX_OK;
|
|
|
699 }
|
|
|
700
|
|
|
701
|
|
|
702 static void *ngx_event_create_conf(ngx_cycle_t *cycle)
|
|
|
703 {
|
|
|
704 ngx_event_conf_t *ecf;
|
|
|
705
|
|
|
706 ngx_test_null(ecf, ngx_palloc(cycle->pool, sizeof(ngx_event_conf_t)),
|
|
|
707 NGX_CONF_ERROR);
|
|
|
708
|
|
|
709 ecf->connections = NGX_CONF_UNSET_UINT;
|
|
|
710 ecf->use = NGX_CONF_UNSET_UINT;
|
|
|
711 ecf->multi_accept = NGX_CONF_UNSET;
|
|
|
712 ecf->accept_mutex = NGX_CONF_UNSET;
|
|
|
713 ecf->accept_mutex_delay = NGX_CONF_UNSET_MSEC;
|
|
|
714 ecf->name = (void *) NGX_CONF_UNSET;
|
|
|
715
|
|
|
716 #if (NGX_DEBUG)
|
|
|
717 ngx_init_array(ecf->debug_connection, cycle->pool, 5, sizeof(in_addr_t),
|
|
|
718 NGX_CONF_ERROR);
|
|
|
719 #endif
|
|
|
720
|
|
|
721 return ecf;
|
|
|
722 }
|
|
|
723
|
|
|
724
|
|
|
725 static char *ngx_event_init_conf(ngx_cycle_t *cycle, void *conf)
|
|
|
726 {
|
|
|
727 ngx_event_conf_t *ecf = conf;
|
|
|
728 #if (HAVE_RTSIG)
|
|
|
729 ngx_core_conf_t *ccf;
|
|
|
730 #endif
|
|
|
731
|
|
|
732 #if (HAVE_KQUEUE)
|
|
|
733
|
|
|
734 ngx_conf_init_unsigned_value(ecf->connections, DEFAULT_CONNECTIONS);
|
|
|
735 ngx_conf_init_unsigned_value(ecf->use, ngx_kqueue_module.ctx_index);
|
|
|
736 ngx_conf_init_ptr_value(ecf->name, ngx_kqueue_module_ctx.name->data);
|
|
|
737
|
|
|
738 #elif (HAVE_DEVPOLL)
|
|
|
739
|
|
|
740 ngx_conf_init_unsigned_value(ecf->connections, DEFAULT_CONNECTIONS);
|
|
|
741 ngx_conf_init_unsigned_value(ecf->use, ngx_devpoll_module.ctx_index);
|
|
|
742 ngx_conf_init_ptr_value(ecf->name, ngx_devpoll_module_ctx.name->data);
|
|
|
743
|
|
|
744 #elif (HAVE_EPOLL)
|
|
|
745
|
|
|
746 ngx_conf_init_unsigned_value(ecf->connections, DEFAULT_CONNECTIONS);
|
|
|
747 ngx_conf_init_unsigned_value(ecf->use, ngx_epoll_module.ctx_index);
|
|
|
748 ngx_conf_init_ptr_value(ecf->name, ngx_epoll_module_ctx.name->data);
|
|
|
749
|
|
|
750 #elif (HAVE_RTSIG)
|
|
|
751
|
|
|
752 ngx_conf_init_unsigned_value(ecf->connections, DEFAULT_CONNECTIONS);
|
|
|
753 ngx_conf_init_unsigned_value(ecf->use, ngx_rtsig_module.ctx_index);
|
|
|
754 ngx_conf_init_ptr_value(ecf->name, ngx_rtsig_module_ctx.name->data);
|
|
|
755
|
|
|
756 #elif (HAVE_SELECT)
|
|
|
757
|
|
|
758 #if (WIN32)
|
|
|
759 ngx_conf_init_unsigned_value(ecf->connections, DEFAULT_CONNECTIONS);
|
|
|
760 #else
|
|
|
761 ngx_conf_init_unsigned_value(ecf->connections,
|
|
|
762 FD_SETSIZE < DEFAULT_CONNECTIONS ? FD_SETSIZE : DEFAULT_CONNECTIONS);
|
|
|
763 #endif
|
|
|
764
|
|
|
765 ngx_conf_init_unsigned_value(ecf->use, ngx_select_module.ctx_index);
|
|
|
766 ngx_conf_init_ptr_value(ecf->name, ngx_select_module_ctx.name->data);
|
|
|
767
|
|
|
768 #else
|
|
|
769
|
|
|
770 ngx_int_t i, m;
|
|
|
771 ngx_event_module_t *module;
|
|
|
772
|
|
|
773 m = -1;
|
|
|
774 module = NULL;
|
|
|
775
|
|
|
776 for (i = 0; ngx_modules[i]; i++) {
|
|
|
777 if (ngx_modules[i]->type == NGX_EVENT_MODULE) {
|
|
|
778 module = ngx_modules[i]->ctx;
|
|
|
779
|
|
|
780 if (ngx_strcmp(module->name->data, event_core_name.data) == 0) {
|
|
|
781 continue;
|
|
|
782 }
|
|
|
783
|
|
|
784 m = ngx_modules[i]->ctx_index;
|
|
|
785 break;
|
|
|
786 }
|
|
|
787 }
|
|
|
788
|
|
|
789 if (m == -1) {
|
|
|
790 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0, "no events module found");
|
|
|
791 return NGX_CONF_ERROR;
|
|
|
792 }
|
|
|
793
|
|
|
794 ngx_conf_init_unsigned_value(ecf->connections, DEFAULT_CONNECTIONS);
|
|
|
795
|
|
|
796 ngx_conf_init_unsigned_value(ecf->use, m);
|
|
|
797 ngx_conf_init_ptr_value(ecf->name, module->name->data);
|
|
|
798
|
|
|
799 #endif
|
|
|
800
|
|
|
801 cycle->connection_n = ecf->connections;
|
|
|
802
|
|
|
803 ngx_conf_init_value(ecf->multi_accept, 0);
|
|
|
804 ngx_conf_init_value(ecf->accept_mutex, 1);
|
|
|
805 ngx_conf_init_msec_value(ecf->accept_mutex_delay, 500);
|
|
|
806
|
|
|
807 #if (HAVE_RTSIG)
|
|
|
808 if (ecf->use == ngx_rtsig_module.ctx_index && ecf->accept_mutex == 0) {
|
|
|
809 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx,
|
|
|
810 ngx_core_module);
|
|
|
811 if (ccf->worker_processes) {
|
|
|
812 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
|
|
|
813 "the \"rtsig\" method requires "
|
|
|
814 "\"accept_mutex\" to be on");
|
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815 return NGX_CONF_ERROR;
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816 }
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|
817 }
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|
818 #endif
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|
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819
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820 return NGX_CONF_OK;
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|
|
821 }
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|
|
822
|
|
|
823
|
|
|
824 static char *ngx_accept_mutex_check(ngx_conf_t *cf, void *post, void *data)
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|
|
825 {
|
|
|
826 #if !(NGX_HAVE_ATOMIC_OPS)
|
|
|
827
|
|
|
828 ngx_flag_t *fp = data;
|
|
|
829
|
|
|
830 *fp = 0;
|
|
|
831
|
|
|
832 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
833 "\"accept_mutex\" is not supported, ignored");
|
|
|
834
|
|
|
835 #endif
|
|
|
836
|
|
|
837 return NGX_CONF_OK;
|
|
|
838 }
|
