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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58
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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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58
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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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44
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37 static ngx_uint_t ngx_event_max_module;
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38
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44
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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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0
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41
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42
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44
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43 ngx_atomic_t connection_counter;
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42
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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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42
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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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44
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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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0
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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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44
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58 ngx_atomic_t ngx_stat_handled0;
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59 ngx_atomic_t *ngx_stat_handled = &ngx_stat_handled0;
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60 ngx_atomic_t ngx_stat_requests0;
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61 ngx_atomic_t *ngx_stat_requests = &ngx_stat_requests0;
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62 ngx_atomic_t ngx_stat_active0;
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63 ngx_atomic_t *ngx_stat_active = &ngx_stat_active0;
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64 ngx_atomic_t ngx_stat_reading0;
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65 ngx_atomic_t *ngx_stat_reading = &ngx_stat_reading0;
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66 ngx_atomic_t ngx_stat_writing0;
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44
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67 ngx_atomic_t *ngx_stat_writing = &ngx_stat_writing0;
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68
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69 #endif
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70
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71
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72
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73 static ngx_command_t ngx_events_commands[] = {
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74
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75 { ngx_string("events"),
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76 NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
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77 ngx_events_block,
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78 0,
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79 0,
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80 NULL },
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81
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82 ngx_null_command
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83 };
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84
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85
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86 static ngx_core_module_t ngx_events_module_ctx = {
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87 ngx_string("events"),
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88 NULL,
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89 NULL
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90 };
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91
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92
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93 ngx_module_t ngx_events_module = {
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94 NGX_MODULE_V1,
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95 &ngx_events_module_ctx, /* module context */
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96 ngx_events_commands, /* module directives */
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97 NGX_CORE_MODULE, /* module type */
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98 NULL, /* init module */
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99 NULL /* init process */
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100 };
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101
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102
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103 static ngx_str_t event_core_name = ngx_string("event_core");
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104
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105 static ngx_conf_post_t ngx_accept_mutex_post = { ngx_accept_mutex_check } ;
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106
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107
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108 static ngx_command_t ngx_event_core_commands[] = {
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109
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110 { ngx_string("connections"),
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111 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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112 ngx_event_connections,
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113 0,
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114 0,
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115 NULL },
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116
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117 { ngx_string("use"),
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118 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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119 ngx_event_use,
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120 0,
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121 0,
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122 NULL },
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123
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124 { ngx_string("multi_accept"),
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125 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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126 ngx_conf_set_flag_slot,
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127 0,
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128 offsetof(ngx_event_conf_t, multi_accept),
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129 NULL },
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130
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131 { ngx_string("accept_mutex"),
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132 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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133 ngx_conf_set_flag_slot,
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134 0,
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135 offsetof(ngx_event_conf_t, accept_mutex),
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136 &ngx_accept_mutex_post },
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137
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138 { ngx_string("accept_mutex_delay"),
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139 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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140 ngx_conf_set_msec_slot,
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141 0,
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142 offsetof(ngx_event_conf_t, accept_mutex_delay),
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143 NULL },
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144
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145 { ngx_string("debug_connection"),
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146 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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147 ngx_event_debug_connection,
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148 0,
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149 0,
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150 NULL },
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151
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152 ngx_null_command
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153 };
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154
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155
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156 ngx_event_module_t ngx_event_core_module_ctx = {
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157 &event_core_name,
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158 ngx_event_create_conf, /* create configuration */
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159 ngx_event_init_conf, /* init configuration */
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160
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161 { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }
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162 };
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163
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164
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165 ngx_module_t ngx_event_core_module = {
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166 NGX_MODULE_V1,
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167 &ngx_event_core_module_ctx, /* module context */
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168 ngx_event_core_commands, /* module directives */
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169 NGX_EVENT_MODULE, /* module type */
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170 ngx_event_module_init, /* init module */
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171 ngx_event_process_init /* init process */
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172 };
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173
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174
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175 ngx_int_t
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176 ngx_handle_read_event(ngx_event_t *rev, u_int flags)
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177 {
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178 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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179
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180 /* kqueue, epoll */
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181
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182 if (!rev->active && !rev->ready) {
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183 if (ngx_add_event(rev, NGX_READ_EVENT, NGX_CLEAR_EVENT)
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184 == NGX_ERROR)
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185 {
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186 return NGX_ERROR;
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187 }
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188 }
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189
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190 return NGX_OK;
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191
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192 } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
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193
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194 /* select, poll, /dev/poll */
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195
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196 if (!rev->active && !rev->ready) {
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197 if (ngx_add_event(rev, NGX_READ_EVENT, NGX_LEVEL_EVENT)
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198 == NGX_ERROR)
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199 {
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200 return NGX_ERROR;
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201 }
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202
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203 return NGX_OK;
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204 }
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205
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206 if (rev->active && (rev->ready || (flags & NGX_CLOSE_EVENT))) {
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207 if (ngx_del_event(rev, NGX_READ_EVENT, NGX_LEVEL_EVENT | flags)
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208 == NGX_ERROR)
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209 {
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210 return NGX_ERROR;
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211 }
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212
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213 return NGX_OK;
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214 }
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215
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216 } else if (ngx_event_flags & NGX_USE_ONESHOT_EVENT) {
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217
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218 /* event ports */
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219
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220 if (!rev->active) {
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221 if (ngx_add_event(rev, NGX_READ_EVENT, NGX_ONESHOT_EVENT)
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222 == NGX_ERROR)
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223 {
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224 return NGX_ERROR;
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225 }
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226 }
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227
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228 return NGX_OK;
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229 }
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230
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231 /* aio, iocp, rtsig */
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232
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233 return NGX_OK;
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234 }
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235
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236
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237 ngx_int_t
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238 ngx_handle_write_event(ngx_event_t *wev, size_t lowat)
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239 {
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240 ngx_connection_t *c;
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241
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242 if (lowat) {
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243 c = (ngx_connection_t *) wev->data;
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244
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245 if (ngx_send_lowat(c, lowat) == NGX_ERROR) {
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246 return NGX_ERROR;
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247 }
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248 }
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249
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250 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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251
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252 /* kqueue, epoll */
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253
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254 if (!wev->active && !wev->ready) {
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255 if (ngx_add_event(wev, NGX_WRITE_EVENT,
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256 NGX_CLEAR_EVENT | (lowat ? NGX_LOWAT_EVENT : 0))
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257 == NGX_ERROR)
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258 {
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259 return NGX_ERROR;
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260 }
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261 }
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262
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263 return NGX_OK;
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264
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265 } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
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266
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267 /* select, poll, /dev/poll */
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268
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269 if (!wev->active && !wev->ready) {
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270 if (ngx_add_event(wev, NGX_WRITE_EVENT, NGX_LEVEL_EVENT)
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271 == NGX_ERROR)
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272 {
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273 return NGX_ERROR;
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274 }
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275
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276 return NGX_OK;
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277 }
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278
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279 if (wev->active && wev->ready) {
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280 if (ngx_del_event(wev, NGX_WRITE_EVENT, NGX_LEVEL_EVENT)
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281 == NGX_ERROR)
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282 {
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283 return NGX_ERROR;
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284 }
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285
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286 return NGX_OK;
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287 }
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288
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289 } else if (ngx_event_flags & NGX_USE_ONESHOT_EVENT) {
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290
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291 /* event ports */
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292
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293 if (!wev->active) {
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294 if (ngx_add_event(wev, NGX_WRITE_EVENT, NGX_ONESHOT_EVENT)
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295 == NGX_ERROR)
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296 {
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297 return NGX_ERROR;
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298 }
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299 }
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300
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301 return NGX_OK;
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302 }
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303
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304 /* aio, iocp, rtsig */
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305
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306 return NGX_OK;
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307 }
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308
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309
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310 static ngx_int_t
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311 ngx_event_module_init(ngx_cycle_t *cycle)
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312 {
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313 #if !(NGX_WIN32)
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314
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22
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315 size_t size;
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316 void ***cf;
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317 char *shared;
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318 ngx_core_conf_t *ccf;
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319 ngx_event_conf_t *ecf;
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320
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321 cf = ngx_get_conf(cycle->conf_ctx, ngx_events_module);
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322
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323 if (cf == NULL) {
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324 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
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325 "no \"events\" section in configuration");
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326 return NGX_ERROR;
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327 }
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328
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329 ecf = (*cf)[ngx_event_core_module.ctx_index];
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330
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331 ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
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332 "using the \"%s\" event method", ecf->name);
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333
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334
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335 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
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336
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337 if (ccf->master == 0 || ngx_accept_mutex_ptr) {
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338 return NGX_OK;
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339 }
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340
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341
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32
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342 /* TODO: adjust cache line size, 128 is P4 cache line size */
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343
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344 size = 128 /* ngx_accept_mutex */
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345 + 128; /* ngx_connection_counter */
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346
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347 #if (NGX_STAT_STUB)
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348
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349 size += 128 /* ngx_stat_accepted */
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350 + 128 /* ngx_stat_handled */
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351 + 128 /* ngx_stat_requests */
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352 + 128 /* ngx_stat_active */
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353 + 128 /* ngx_stat_reading */
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354 + 128; /* ngx_stat_writing */
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355
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356 #endif
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357
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50
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358 shared = ngx_create_shared_memory(size, cycle->log);
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359 if (shared == NULL) {
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360 return NGX_ERROR;
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361 }
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362
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363 ngx_accept_mutex_ptr = (ngx_atomic_t *) shared;
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364 ngx_connection_counter = (ngx_atomic_t *) (shared + 128);
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365
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366 #if (NGX_STAT_STUB)
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367
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368 ngx_stat_accepted = (ngx_atomic_t *) (shared + 2 * 128);
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369 ngx_stat_handled = (ngx_atomic_t *) (shared + 3 * 128);
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370 ngx_stat_requests = (ngx_atomic_t *) (shared + 4 * 128);
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371 ngx_stat_active = (ngx_atomic_t *) (shared + 5 * 128);
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372 ngx_stat_reading = (ngx_atomic_t *) (shared + 6 * 128);
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373 ngx_stat_writing = (ngx_atomic_t *) (shared + 7 * 128);
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374
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375 #endif
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376
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377 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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378 "counter: %p, %d",
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379 ngx_connection_counter, *ngx_connection_counter);
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380
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381 #endif
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382
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383 return NGX_OK;
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384 }
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385
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386
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58
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387 static ngx_int_t
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388 ngx_event_process_init(ngx_cycle_t *cycle)
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389 {
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390 ngx_uint_t m, i;
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391 ngx_socket_t fd;
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392 ngx_event_t *rev, *wev;
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393 ngx_listening_t *s;
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394 ngx_connection_t *c;
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395 ngx_core_conf_t *ccf;
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396 ngx_event_conf_t *ecf;
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397 ngx_event_module_t *module;
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398 #if (NGX_WIN32)
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0
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399 ngx_iocp_conf_t *iocpcf;
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400 #endif
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401
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402 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
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403 ecf = ngx_event_get_conf(cycle->conf_ctx, ngx_event_core_module);
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404
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405 if (ngx_accept_mutex_ptr && ccf->worker_processes > 1 && ecf->accept_mutex)
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406 {
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407 ngx_accept_mutex = ngx_accept_mutex_ptr;
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408 ngx_accept_mutex_held = 0;
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409 ngx_accept_mutex_delay = ecf->accept_mutex_delay;
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410 }
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411
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412 #if (NGX_THREADS)
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50
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413 ngx_posted_events_mutex = ngx_mutex_init(cycle->log, 0);
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414 if (ngx_posted_events_mutex == NULL) {
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0
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415 return NGX_ERROR;
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416 }
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417 #endif
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418
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419 if (ngx_event_timer_init(cycle->log) == NGX_ERROR) {
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420 return NGX_ERROR;
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421 }
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422
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423 cycle->connection_n = ecf->connections;
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424
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425 for (m = 0; ngx_modules[m]; m++) {
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426 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
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427 continue;
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428 }
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429
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430 if (ngx_modules[m]->ctx_index == ecf->use) {
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431 module = ngx_modules[m]->ctx;
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432 if (module->actions.init(cycle) == NGX_ERROR) {
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433 /* fatal */
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434 exit(2);
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435 }
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436 break;
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437 }
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438 }
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439
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440 cycle->connections = ngx_alloc(sizeof(ngx_connection_t) * ecf->connections,
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441 cycle->log);
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442 if (cycle->connections == NULL) {
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443 return NGX_ERROR;
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444 }
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445
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446 c = cycle->connections;
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447 for (i = 0; i < cycle->connection_n; i++) {
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448 c[i].fd = (ngx_socket_t) -1;
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449 c[i].data = NULL;
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450 #if (NGX_THREADS)
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451 c[i].lock = 0;
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452 #endif
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453 }
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454
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455 cycle->read_events = ngx_alloc(sizeof(ngx_event_t) * ecf->connections,
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456 cycle->log);
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457 if (cycle->read_events == NULL) {
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458 return NGX_ERROR;
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459 }
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460
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461 rev = cycle->read_events;
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462 for (i = 0; i < cycle->connection_n; i++) {
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463 rev[i].closed = 1;
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30
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464 rev[i].instance = 1;
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0
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465 #if (NGX_THREADS)
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466 rev[i].lock = &c[i].lock;
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467 rev[i].own_lock = &c[i].lock;
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468 #endif
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469 }
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470
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471 cycle->write_events = ngx_alloc(sizeof(ngx_event_t) * ecf->connections,
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30
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472 cycle->log);
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0
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473 if (cycle->write_events == NULL) {
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474 return NGX_ERROR;
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475 }
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476
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477 wev = cycle->write_events;
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478 for (i = 0; i < cycle->connection_n; i++) {
|
|
479 wev[i].closed = 1;
|
|
480 #if (NGX_THREADS)
|
|
481 wev[i].lock = &c[i].lock;
|
|
482 wev[i].own_lock = &c[i].lock;
|
|
483 #endif
|
|
484 }
|
|
485
|
|
486 /* for each listening socket */
|
|
487
|
|
488 s = cycle->listening.elts;
|
|
489 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
490
|
|
491 fd = s[i].fd;
|
|
492
|
10
|
493 #if (NGX_WIN32)
|
0
|
494 /*
|
|
495 * Winsock assignes a socket number divisible by 4
|
|
496 * so to find a connection we divide a socket number by 4.
|
|
497 */
|
|
498
|
|
499 fd /= 4;
|
|
500 #endif
|
|
501
|
|
502 c = &cycle->connections[fd];
|
|
503 rev = &cycle->read_events[fd];
|
|
504 wev = &cycle->write_events[fd];
|
|
505
|
|
506 ngx_memzero(c, sizeof(ngx_connection_t));
|
|
507 ngx_memzero(rev, sizeof(ngx_event_t));
|
30
|
508 ngx_memzero(wev, sizeof(ngx_event_t));
|
0
|
509
|
|
510 c->fd = s[i].fd;
|
|
511 c->listening = &s[i];
|
|
512
|
|
513 c->ctx = s[i].ctx;
|
|
514 c->servers = s[i].servers;
|
|
515 c->log = s[i].log;
|
|
516 c->read = rev;
|
|
517
|
|
518 /* required by iocp in "c->write->active = 1" */
|
|
519 c->write = wev;
|
|
520
|
|
521 /* required by poll */
|
|
522 wev->index = NGX_INVALID_INDEX;
|
|
523
|
|
524 rev->log = c->log;
|
|
525 rev->data = c;
|
|
526 rev->index = NGX_INVALID_INDEX;
|
|
527
|
|
528 rev->available = 0;
|
|
529
|
|
530 rev->accept = 1;
|
|
531
|
18
|
532 #if (NGX_HAVE_DEFERRED_ACCEPT)
|
0
|
533 rev->deferred_accept = s[i].deferred_accept;
|
|
534 #endif
|
|
535
|
|
536 if (!(ngx_event_flags & NGX_USE_IOCP_EVENT)) {
|
|
537 if (s[i].remain) {
|
|
538
|
|
539 /*
|
|
540 * delete the old accept events that were bound to
|
|
541 * the old cycle read events array
|
|
542 */
|
|
543
|
|
544 if (ngx_del_event(&cycle->old_cycle->read_events[fd],
|
|
545 NGX_READ_EVENT, NGX_CLOSE_EVENT) == NGX_ERROR)
|
|
546 {
|
|
547 return NGX_ERROR;
|
|
548 }
|
|
549
|
|
550 cycle->old_cycle->connections[fd].fd = (ngx_socket_t) -1;
|
|
551 }
|
|
552 }
|
|
553
|
10
|
554 #if (NGX_WIN32)
|
0
|
555
|
|
556 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
|
58
|
557 rev->handler = ngx_event_acceptex;
|
0
|
558
|
|
559 if (ngx_add_event(rev, 0, NGX_IOCP_ACCEPT) == NGX_ERROR) {
|
|
560 return NGX_ERROR;
|
|
561 }
|
|
562
|
|
563 iocpcf = ngx_event_get_conf(cycle->conf_ctx, ngx_iocp_module);
|
|
564 if (ngx_event_post_acceptex(&s[i], iocpcf->post_acceptex)
|
|
565 == NGX_ERROR)
|
|
566 {
|
|
567 return NGX_ERROR;
|
|
568 }
|
|
569
|
|
570 } else {
|
58
|
571 rev->handler = ngx_event_accept;
|
10
|
572
|
0
|
573 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
574 return NGX_ERROR;
|
|
575 }
|
|
576 }
|
|
577
|
|
578 #else
|
|
579
|
58
|
580 rev->handler = ngx_event_accept;
|
0
|
581
|
|
582 if (ngx_accept_mutex) {
|
|
583 continue;
|
|
584 }
|
|
585
|
|
586 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
|
|
587 if (ngx_add_conn(c) == NGX_ERROR) {
|
|
588 return NGX_ERROR;
|
|
589 }
|
|
590
|
|
591 } else {
|
|
592 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
593 return NGX_ERROR;
|
|
594 }
|
|
595 }
|
|
596
|
|
597 #endif
|
|
598 }
|
|
599
|
|
600 return NGX_OK;
|
|
601 }
|
|
602
|
|
603
|
58
|
604 ngx_int_t
|
|
605 ngx_send_lowat(ngx_connection_t *c, size_t lowat)
|
2
|
606 {
|
|
607 int sndlowat;
|
|
608
|
4
|
609 #if (NGX_HAVE_LOWAT_EVENT)
|
2
|
610
|
4
|
611 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
2
|
612 c->write->available = lowat;
|
|
613 return NGX_OK;
|
|
614 }
|
|
615
|
|
616 #endif
|
|
617
|
|
618 if (lowat == 0 || c->sndlowat) {
|
|
619 return NGX_OK;
|
|
620 }
|
|
621
|
|
622 sndlowat = (int) lowat;
|
|
623
|
|
624 if (setsockopt(c->fd, SOL_SOCKET, SO_SNDLOWAT,
|
|
625 (const void *) &sndlowat, sizeof(int)) == -1)
|
|
626 {
|
|
627 ngx_connection_error(c, ngx_socket_errno,
|
|
628 "setsockopt(SO_SNDLOWAT) failed");
|
|
629 return NGX_ERROR;
|
|
630 }
|
|
631
|
|
632 c->sndlowat = 1;
|
|
633
|
|
634 return NGX_OK;
|
|
635 }
|
|
636
|
|
637
|
58
|
638 static char *
|
|
639 ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
0
|
640 {
|
50
|
641 char *rv;
|
0
|
642 void ***ctx;
|
50
|
643 ngx_uint_t i;
|
0
|
644 ngx_conf_t pcf;
|
50
|
645 ngx_event_module_t *m;
|
0
|
646
|
|
647 /* count the number of the event modules and set up their indices */
|
|
648
|
|
649 ngx_event_max_module = 0;
|
50
|
650 for (i = 0; ngx_modules[i]; i++) {
|
|
651 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
0
|
652 continue;
|
|
653 }
|
|
654
|
50
|
655 ngx_modules[i]->ctx_index = ngx_event_max_module++;
|
0
|
656 }
|
|
657
|
50
|
658 ctx = ngx_pcalloc(cf->pool, sizeof(void *));
|
|
659 if (ctx == NULL) {
|
|
660 return NGX_CONF_ERROR;
|
|
661 }
|
0
|
662
|
50
|
663 *ctx = ngx_pcalloc(cf->pool, ngx_event_max_module * sizeof(void *));
|
|
664 if (*ctx == NULL) {
|
|
665 return NGX_CONF_ERROR;
|
|
666 }
|
0
|
667
|
|
668 *(void **) conf = ctx;
|
|
669
|
50
|
670 for (i = 0; ngx_modules[i]; i++) {
|
|
671 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
0
|
672 continue;
|
|
673 }
|
|
674
|
50
|
675 m = ngx_modules[i]->ctx;
|
0
|
676
|
50
|
677 if (m->create_conf) {
|
|
678 (*ctx)[ngx_modules[i]->ctx_index] = m->create_conf(cf->cycle);
|
|
679 if ((*ctx)[ngx_modules[i]->ctx_index] == NULL) {
|
|
680 return NGX_CONF_ERROR;
|
|
681 }
|
0
|
682 }
|
|
683 }
|
|
684
|
|
685 pcf = *cf;
|
|
686 cf->ctx = ctx;
|
|
687 cf->module_type = NGX_EVENT_MODULE;
|
|
688 cf->cmd_type = NGX_EVENT_CONF;
|
50
|
689
|
0
|
690 rv = ngx_conf_parse(cf, NULL);
|
50
|
691
|
0
|
692 *cf = pcf;
|
|
693
|
|
694 if (rv != NGX_CONF_OK)
|
|
695 return rv;
|
|
696
|
50
|
697 for (i = 0; ngx_modules[i]; i++) {
|
|
698 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
0
|
699 continue;
|
|
700 }
|
|
701
|
50
|
702 m = ngx_modules[i]->ctx;
|
0
|
703
|
50
|
704 if (m->init_conf) {
|
|
705 rv = m->init_conf(cf->cycle, (*ctx)[ngx_modules[i]->ctx_index]);
|
0
|
706 if (rv != NGX_CONF_OK) {
|
|
707 return rv;
|
|
708 }
|
|
709 }
|
|
710 }
|
|
711
|
|
712 return NGX_CONF_OK;
|
|
713 }
|
|
714
|
|
715
|
58
|
716 static char *
|
|
717 ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
0
|
718 {
|
|
719 ngx_event_conf_t *ecf = conf;
|
|
720
|
|
721 ngx_str_t *value;
|
|
722
|
|
723 if (ecf->connections != NGX_CONF_UNSET_UINT) {
|
|
724 return "is duplicate" ;
|
|
725 }
|
|
726
|
|
727 value = cf->args->elts;
|
|
728 ecf->connections = ngx_atoi(value[1].data, value[1].len);
|
|
729 if (ecf->connections == (ngx_uint_t) NGX_ERROR) {
|
|
730 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
10
|
731 "invalid number \"%V\"", &value[1]);
|
0
|
732
|
|
733 return NGX_CONF_ERROR;
|
|
734 }
|
|
735
|
|
736 cf->cycle->connection_n = ecf->connections;
|
|
737
|
|
738 return NGX_CONF_OK;
|
|
739 }
|
|
740
|
|
741
|
58
|
742 static char *
|
|
743 ngx_event_use(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
0
|
744 {
|
|
745 ngx_event_conf_t *ecf = conf;
|
|
746
|
|
747 ngx_int_t m;
|
|
748 ngx_str_t *value;
|
|
749 ngx_event_conf_t *old_ecf;
|
|
750 ngx_event_module_t *module;
|
|
751
|
|
752 if (ecf->use != NGX_CONF_UNSET_UINT) {
|
|
753 return "is duplicate" ;
|
|
754 }
|
|
755
|
|
756 value = cf->args->elts;
|
|
757
|
|
758 if (cf->cycle->old_cycle->conf_ctx) {
|
|
759 old_ecf = ngx_event_get_conf(cf->cycle->old_cycle->conf_ctx,
|
|
760 ngx_event_core_module);
|
|
761 } else {
|
|
762 old_ecf = NULL;
|
|
763 }
|
|
764
|
|
765
|
|
766 for (m = 0; ngx_modules[m]; m++) {
|
|
767 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
768 continue;
|
|
769 }
|
|
770
|
|
771 module = ngx_modules[m]->ctx;
|
|
772 if (module->name->len == value[1].len) {
|
|
773 if (ngx_strcmp(module->name->data, value[1].data) == 0) {
|
|
774 ecf->use = ngx_modules[m]->ctx_index;
|
|
775 ecf->name = module->name->data;
|
|
776
|
|
777 if (ngx_process == NGX_PROCESS_SINGLE
|
|
778 && old_ecf
|
|
779 && old_ecf->use != ecf->use)
|
|
780 {
|
|
781 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
16
|
782 "when the server runs without a master process "
|
|
783 "the \"%V\" event type must be the same as "
|
|
784 "in previous configuration - \"%s\" "
|
|
785 "and it can not be changed on the fly, "
|
|
786 "to change it you need to stop server "
|
|
787 "and start it again",
|
|
788 &value[1], old_ecf->name);
|
0
|
789
|
|
790 return NGX_CONF_ERROR;
|
|
791 }
|
|
792
|
|
793 return NGX_CONF_OK;
|
|
794 }
|
|
795 }
|
|
796 }
|
|
797
|
|
798 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
10
|
799 "invalid event type \"%V\"", &value[1]);
|
0
|
800
|
|
801 return NGX_CONF_ERROR;
|
|
802 }
|
|
803
|
|
804
|
58
|
805 static char *
|
|
806 ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
0
|
807 {
|
|
808 #if (NGX_DEBUG)
|
|
809 ngx_event_conf_t *ecf = conf;
|
|
810
|
|
811 in_addr_t *addr;
|
|
812 ngx_str_t *value;
|
|
813 struct hostent *h;
|
|
814
|
|
815 value = cf->args->elts;
|
|
816
|
|
817 /* AF_INET only */
|
|
818
|
50
|
819 addr = ngx_array_push(&ecf->debug_connection);
|
|
820 if (addr == NULL) {
|
0
|
821 return NGX_CONF_ERROR;
|
|
822 }
|
|
823
|
|
824 *addr = inet_addr((char *) value[1].data);
|
|
825
|
|
826 if (*addr != INADDR_NONE) {
|
|
827 return NGX_OK;
|
|
828 }
|
|
829
|
|
830 h = gethostbyname((char *) value[1].data);
|
|
831
|
|
832 if (h == NULL || h->h_addr_list[0] == NULL) {
|
|
833 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
10
|
834 "host \"%s\" not found", value[1].data);
|
0
|
835 return NGX_CONF_ERROR;
|
|
836 }
|
|
837
|
|
838 *addr = *(in_addr_t *)(h->h_addr_list[0]);
|
|
839
|
|
840 #else
|
|
841
|
|
842 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
843 "\"debug_connection\" is ignored, you need to rebuild "
|
|
844 "nginx using --with-debug option to enable it");
|
|
845
|
|
846 #endif
|
|
847
|
|
848 return NGX_OK;
|
|
849 }
|
|
850
|
|
851
|
58
|
852 static void *
|
|
853 ngx_event_create_conf(ngx_cycle_t *cycle)
|
0
|
854 {
|
|
855 ngx_event_conf_t *ecf;
|
|
856
|
50
|
857 ecf = ngx_palloc(cycle->pool, sizeof(ngx_event_conf_t));
|
|
858 if (ecf == NULL) {
|
|
859 return NGX_CONF_ERROR;
|
|
860 }
|
0
|
861
|
|
862 ecf->connections = NGX_CONF_UNSET_UINT;
|
|
863 ecf->use = NGX_CONF_UNSET_UINT;
|
|
864 ecf->multi_accept = NGX_CONF_UNSET;
|
|
865 ecf->accept_mutex = NGX_CONF_UNSET;
|
|
866 ecf->accept_mutex_delay = NGX_CONF_UNSET_MSEC;
|
|
867 ecf->name = (void *) NGX_CONF_UNSET;
|
|
868
|
|
869 #if (NGX_DEBUG)
|
50
|
870
|
|
871 if (ngx_array_init(&ecf->debug_connection, cycle->pool, 4,
|
|
872 sizeof(in_addr_t)) == NGX_ERROR)
|
|
873 {
|
|
874 return NGX_CONF_ERROR;
|
|
875 }
|
|
876
|
0
|
877 #endif
|
|
878
|
|
879 return ecf;
|
|
880 }
|
|
881
|
|
882
|
58
|
883 static char *
|
|
884 ngx_event_init_conf(ngx_cycle_t *cycle, void *conf)
|
0
|
885 {
|
|
886 ngx_event_conf_t *ecf = conf;
|
16
|
887
|
50
|
888 #if (NGX_HAVE_EPOLL) && !(NGX_TEST_BUILD_EPOLL)
|
|
889 int fd;
|
|
890 #endif
|
|
891 #if (NGX_HAVE_RTSIG)
|
|
892 ngx_uint_t rtsig;
|
|
893 #endif
|
16
|
894 ngx_int_t i, connections;
|
|
895 ngx_module_t *module;
|
|
896 ngx_core_conf_t *ccf;
|
|
897 ngx_event_module_t *event_module;
|
|
898
|
|
899 connections = NGX_CONF_UNSET_UINT;
|
|
900 module = NULL;
|
|
901
|
18
|
902 #if (NGX_HAVE_EPOLL) && !(NGX_TEST_BUILD_EPOLL)
|
16
|
903
|
|
904 fd = epoll_create(100);
|
|
905
|
|
906 if (fd != -1) {
|
|
907 close(fd);
|
|
908 connections = DEFAULT_CONNECTIONS;
|
|
909 module = &ngx_epoll_module;
|
|
910
|
|
911 } else if (ngx_errno != NGX_ENOSYS) {
|
|
912 connections = DEFAULT_CONNECTIONS;
|
|
913 module = &ngx_epoll_module;
|
|
914 }
|
|
915
|
|
916 #endif
|
|
917
|
18
|
918 #if (NGX_HAVE_RTSIG)
|
16
|
919
|
|
920 if (module == NULL) {
|
|
921 connections = DEFAULT_CONNECTIONS;
|
|
922 module = &ngx_rtsig_module;
|
|
923 rtsig = 1;
|
50
|
924
|
|
925 } else {
|
|
926 rtsig = 0;
|
16
|
927 }
|
|
928
|
|
929 #endif
|
|
930
|
18
|
931 #if (NGX_HAVE_DEVPOLL)
|
16
|
932
|
|
933 connections = DEFAULT_CONNECTIONS;
|
|
934 module = &ngx_devpoll_module;
|
|
935
|
0
|
936 #endif
|
|
937
|
18
|
938 #if (NGX_HAVE_KQUEUE)
|
0
|
939
|
16
|
940 connections = DEFAULT_CONNECTIONS;
|
|
941 module = &ngx_kqueue_module;
|
0
|
942
|
16
|
943 #endif
|
0
|
944
|
18
|
945 #if (NGX_HAVE_SELECT)
|
0
|
946
|
16
|
947 if (module == NULL) {
|
0
|
948
|
50
|
949 #if (NGX_WIN32 || FD_SETSIZE >= DEFAULT_CONNECTIONS)
|
16
|
950 connections = DEFAULT_CONNECTIONS;
|
0
|
951 #else
|
50
|
952 connections = FD_SETSIZE;
|
16
|
953 #endif
|
|
954 module = &ngx_select_module;
|
|
955 }
|
|
956
|
0
|
957 #endif
|
|
958
|
16
|
959 if (module == NULL) {
|
|
960 for (i = 0; ngx_modules[i]; i++) {
|
|
961 if (ngx_modules[i]->type == NGX_EVENT_MODULE) {
|
|
962 event_module = ngx_modules[i]->ctx;
|
0
|
963
|
16
|
964 if (ngx_strcmp(event_module->name->data, event_core_name.data)
|
|
965 == 0)
|
|
966 {
|
|
967 continue;
|
|
968 }
|
0
|
969
|
16
|
970 module = ngx_modules[i];
|
|
971 break;
|
0
|
972 }
|
|
973 }
|
|
974 }
|
|
975
|
16
|
976 if (module == NULL) {
|
0
|
977 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0, "no events module found");
|
|
978 return NGX_CONF_ERROR;
|
|
979 }
|
|
980
|
16
|
981 ngx_conf_init_unsigned_value(ecf->connections, connections);
|
|
982 cycle->connection_n = ecf->connections;
|
0
|
983
|
16
|
984 ngx_conf_init_unsigned_value(ecf->use, module->ctx_index);
|
0
|
985
|
16
|
986 event_module = module->ctx;
|
|
987 ngx_conf_init_ptr_value(ecf->name, event_module->name->data);
|
0
|
988
|
|
989 ngx_conf_init_value(ecf->multi_accept, 0);
|
|
990 ngx_conf_init_value(ecf->accept_mutex, 1);
|
|
991 ngx_conf_init_msec_value(ecf->accept_mutex_delay, 500);
|
|
992
|
16
|
993
|
50
|
994 #if (NGX_HAVE_RTSIG)
|
|
995
|
|
996 if (!rtsig) {
|
|
997 return NGX_CONF_OK;
|
|
998 }
|
|
999
|
|
1000 #endif
|
|
1001
|
|
1002 if (ecf->accept_mutex) {
|
16
|
1003 return NGX_CONF_OK;
|
0
|
1004 }
|
16
|
1005
|
|
1006 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
|
0
|
1007
|
16
|
1008 if (ccf->worker_processes == 0) {
|
|
1009 return NGX_CONF_OK;
|
|
1010 }
|
|
1011
|
|
1012 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
|
|
1013 "the \"rtsig\" method requires \"accept_mutex\" to be on");
|
|
1014
|
|
1015 return NGX_CONF_ERROR;
|
0
|
1016 }
|
|
1017
|
|
1018
|
58
|
1019 static char *
|
|
1020 ngx_accept_mutex_check(ngx_conf_t *cf, void *post, void *data)
|
0
|
1021 {
|
|
1022 #if !(NGX_HAVE_ATOMIC_OPS)
|
|
1023
|
|
1024 ngx_flag_t *fp = data;
|
|
1025
|
|
1026 *fp = 0;
|
|
1027
|
|
1028 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
52
|
1029 "\"accept_mutex\" is not supported on this platform, "
|
|
1030 "ignored");
|
0
|
1031
|
|
1032 #endif
|
|
1033
|
|
1034 return NGX_CONF_OK;
|
|
1035 }
|