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0
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_event.h>
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10
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11
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12 #define DEFAULT_CONNECTIONS 512
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13
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14
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16
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15 extern ngx_module_t ngx_kqueue_module;
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16 extern ngx_module_t ngx_devpoll_module;
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17 extern ngx_module_t ngx_epoll_module;
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18 extern ngx_module_t ngx_rtsig_module;
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0
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19 extern ngx_module_t ngx_select_module;
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20
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21
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22 static ngx_int_t ngx_event_module_init(ngx_cycle_t *cycle);
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23 static ngx_int_t ngx_event_process_init(ngx_cycle_t *cycle);
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24 static char *ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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25
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26 static char *ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd,
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58
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27 void *conf);
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0
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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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0
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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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0
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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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0
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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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0
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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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0
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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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58
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94 NGX_MODULE_V1,
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0
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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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90
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98 NULL, /* init master */
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0
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99 NULL, /* init module */
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90
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100 NULL, /* init process */
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101 NULL, /* init thread */
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102 NULL, /* exit thread */
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103 NULL, /* exit process */
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104 NULL, /* exit master */
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105 NGX_MODULE_V1_PADDING
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0
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106 };
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107
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108
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109 static ngx_str_t event_core_name = ngx_string("event_core");
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110
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111 static ngx_conf_post_t ngx_accept_mutex_post = { ngx_accept_mutex_check } ;
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112
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113
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114 static ngx_command_t ngx_event_core_commands[] = {
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115
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116 { ngx_string("connections"),
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117 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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118 ngx_event_connections,
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119 0,
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120 0,
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121 NULL },
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122
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123 { ngx_string("use"),
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124 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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125 ngx_event_use,
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126 0,
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127 0,
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128 NULL },
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129
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130 { ngx_string("multi_accept"),
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131 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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132 ngx_conf_set_flag_slot,
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133 0,
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134 offsetof(ngx_event_conf_t, multi_accept),
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135 NULL },
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136
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137 { ngx_string("accept_mutex"),
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138 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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139 ngx_conf_set_flag_slot,
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140 0,
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141 offsetof(ngx_event_conf_t, accept_mutex),
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142 &ngx_accept_mutex_post },
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143
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144 { ngx_string("accept_mutex_delay"),
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145 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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146 ngx_conf_set_msec_slot,
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147 0,
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148 offsetof(ngx_event_conf_t, accept_mutex_delay),
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149 NULL },
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150
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151 { ngx_string("debug_connection"),
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152 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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153 ngx_event_debug_connection,
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154 0,
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155 0,
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156 NULL },
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157
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158 ngx_null_command
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159 };
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160
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161
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162 ngx_event_module_t ngx_event_core_module_ctx = {
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163 &event_core_name,
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164 ngx_event_create_conf, /* create configuration */
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165 ngx_event_init_conf, /* init configuration */
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166
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167 { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }
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168 };
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169
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170
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171 ngx_module_t ngx_event_core_module = {
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58
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172 NGX_MODULE_V1,
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0
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173 &ngx_event_core_module_ctx, /* module context */
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174 ngx_event_core_commands, /* module directives */
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175 NGX_EVENT_MODULE, /* module type */
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90
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176 NULL, /* init master */
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0
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177 ngx_event_module_init, /* init module */
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90
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178 ngx_event_process_init, /* init process */
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179 NULL, /* init thread */
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180 NULL, /* exit thread */
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181 NULL, /* exit process */
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182 NULL, /* exit master */
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183 NGX_MODULE_V1_PADDING
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0
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184 };
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185
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186
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58
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187 ngx_int_t
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188 ngx_handle_read_event(ngx_event_t *rev, u_int flags)
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189 {
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190 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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191
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192 /* kqueue, epoll */
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193
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194 if (!rev->active && !rev->ready) {
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195 if (ngx_add_event(rev, NGX_READ_EVENT, NGX_CLEAR_EVENT)
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196 == NGX_ERROR)
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197 {
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198 return NGX_ERROR;
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199 }
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200 }
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201
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202 return NGX_OK;
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203
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204 } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
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205
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206 /* select, poll, /dev/poll */
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207
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208 if (!rev->active && !rev->ready) {
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209 if (ngx_add_event(rev, NGX_READ_EVENT, NGX_LEVEL_EVENT)
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210 == NGX_ERROR)
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211 {
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212 return NGX_ERROR;
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213 }
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214
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215 return NGX_OK;
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216 }
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217
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218 if (rev->active && (rev->ready || (flags & NGX_CLOSE_EVENT))) {
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219 if (ngx_del_event(rev, NGX_READ_EVENT, NGX_LEVEL_EVENT | flags)
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220 == NGX_ERROR)
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221 {
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222 return NGX_ERROR;
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223 }
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224
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225 return NGX_OK;
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226 }
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227
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228 } else if (ngx_event_flags & NGX_USE_ONESHOT_EVENT) {
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229
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230 /* event ports */
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231
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232 if (!rev->active) {
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233 if (ngx_add_event(rev, NGX_READ_EVENT, NGX_ONESHOT_EVENT)
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234 == NGX_ERROR)
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235 {
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236 return NGX_ERROR;
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237 }
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238 }
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239
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240 return NGX_OK;
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241 }
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242
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243 /* aio, iocp, rtsig */
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244
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245 return NGX_OK;
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246 }
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247
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248
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249 ngx_int_t
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250 ngx_handle_write_event(ngx_event_t *wev, size_t lowat)
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251 {
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252 ngx_connection_t *c;
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253
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254 if (lowat) {
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255 c = (ngx_connection_t *) wev->data;
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256
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257 if (ngx_send_lowat(c, lowat) == NGX_ERROR) {
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258 return NGX_ERROR;
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259 }
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260 }
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261
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262 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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263
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264 /* kqueue, epoll */
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265
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266 if (!wev->active && !wev->ready) {
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267 if (ngx_add_event(wev, NGX_WRITE_EVENT,
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268 NGX_CLEAR_EVENT | (lowat ? NGX_LOWAT_EVENT : 0))
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269 == NGX_ERROR)
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270 {
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271 return NGX_ERROR;
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272 }
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273 }
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274
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275 return NGX_OK;
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276
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277 } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
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278
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279 /* select, poll, /dev/poll */
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280
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281 if (!wev->active && !wev->ready) {
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282 if (ngx_add_event(wev, NGX_WRITE_EVENT, NGX_LEVEL_EVENT)
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283 == NGX_ERROR)
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284 {
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285 return NGX_ERROR;
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286 }
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287
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288 return NGX_OK;
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289 }
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290
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291 if (wev->active && wev->ready) {
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292 if (ngx_del_event(wev, NGX_WRITE_EVENT, NGX_LEVEL_EVENT)
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293 == NGX_ERROR)
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294 {
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295 return NGX_ERROR;
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296 }
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297
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298 return NGX_OK;
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299 }
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300
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301 } else if (ngx_event_flags & NGX_USE_ONESHOT_EVENT) {
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302
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303 /* event ports */
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304
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305 if (!wev->active) {
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306 if (ngx_add_event(wev, NGX_WRITE_EVENT, NGX_ONESHOT_EVENT)
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307 == NGX_ERROR)
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308 {
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309 return NGX_ERROR;
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310 }
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311 }
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312
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313 return NGX_OK;
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314 }
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315
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316 /* aio, iocp, rtsig */
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317
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318 return NGX_OK;
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319 }
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320
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321
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322 static ngx_int_t
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323 ngx_event_module_init(ngx_cycle_t *cycle)
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0
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324 {
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10
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325 #if !(NGX_WIN32)
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0
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326
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22
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327 size_t size;
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328 void ***cf;
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329 char *shared;
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330 ngx_core_conf_t *ccf;
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331 ngx_event_conf_t *ecf;
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332
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333 cf = ngx_get_conf(cycle->conf_ctx, ngx_events_module);
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334
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335 if (cf == NULL) {
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336 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
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337 "no \"events\" section in configuration");
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338 return NGX_ERROR;
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339 }
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340
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341 ecf = (*cf)[ngx_event_core_module.ctx_index];
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342
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343 ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
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344 "using the \"%s\" event method", ecf->name);
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345
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0
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346
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347 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
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348
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349 if (ccf->master == 0 || ngx_accept_mutex_ptr) {
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350 return NGX_OK;
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351 }
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352
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353
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32
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354 /* TODO: adjust cache line size, 128 is P4 cache line size */
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0
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355
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356 size = 128 /* ngx_accept_mutex */
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357 + 128; /* ngx_connection_counter */
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358
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359 #if (NGX_STAT_STUB)
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360
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361 size += 128 /* ngx_stat_accepted */
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44
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362 + 128 /* ngx_stat_handled */
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0
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363 + 128 /* ngx_stat_requests */
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364 + 128 /* ngx_stat_active */
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365 + 128 /* ngx_stat_reading */
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366 + 128; /* ngx_stat_writing */
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367
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368 #endif
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369
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50
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370 shared = ngx_create_shared_memory(size, cycle->log);
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371 if (shared == NULL) {
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0
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372 return NGX_ERROR;
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373 }
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374
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375 ngx_accept_mutex_ptr = (ngx_atomic_t *) shared;
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376 ngx_connection_counter = (ngx_atomic_t *) (shared + 128);
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377
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378 #if (NGX_STAT_STUB)
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379
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380 ngx_stat_accepted = (ngx_atomic_t *) (shared + 2 * 128);
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44
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381 ngx_stat_handled = (ngx_atomic_t *) (shared + 3 * 128);
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382 ngx_stat_requests = (ngx_atomic_t *) (shared + 4 * 128);
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383 ngx_stat_active = (ngx_atomic_t *) (shared + 5 * 128);
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384 ngx_stat_reading = (ngx_atomic_t *) (shared + 6 * 128);
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385 ngx_stat_writing = (ngx_atomic_t *) (shared + 7 * 128);
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0
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386
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387 #endif
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388
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389 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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10
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390 "counter: %p, %d",
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0
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391 ngx_connection_counter, *ngx_connection_counter);
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392
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393 #endif
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394
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395 return NGX_OK;
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396 }
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397
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398
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58
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399 static ngx_int_t
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400 ngx_event_process_init(ngx_cycle_t *cycle)
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0
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401 {
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402 ngx_uint_t m, i;
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403 ngx_socket_t fd;
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404 ngx_event_t *rev, *wev;
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405 ngx_listening_t *s;
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406 ngx_connection_t *c;
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407 ngx_core_conf_t *ccf;
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408 ngx_event_conf_t *ecf;
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|
|
409 ngx_event_module_t *module;
|
|
10
|
410 #if (NGX_WIN32)
|
|
0
|
411 ngx_iocp_conf_t *iocpcf;
|
|
|
412 #endif
|
|
|
413
|
|
|
414 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
|
|
|
415 ecf = ngx_event_get_conf(cycle->conf_ctx, ngx_event_core_module);
|
|
|
416
|
|
|
417 if (ngx_accept_mutex_ptr && ccf->worker_processes > 1 && ecf->accept_mutex)
|
|
|
418 {
|
|
|
419 ngx_accept_mutex = ngx_accept_mutex_ptr;
|
|
|
420 ngx_accept_mutex_held = 0;
|
|
|
421 ngx_accept_mutex_delay = ecf->accept_mutex_delay;
|
|
|
422 }
|
|
|
423
|
|
|
424 #if (NGX_THREADS)
|
|
50
|
425 ngx_posted_events_mutex = ngx_mutex_init(cycle->log, 0);
|
|
|
426 if (ngx_posted_events_mutex == NULL) {
|
|
0
|
427 return NGX_ERROR;
|
|
|
428 }
|
|
|
429 #endif
|
|
|
430
|
|
|
431 if (ngx_event_timer_init(cycle->log) == NGX_ERROR) {
|
|
|
432 return NGX_ERROR;
|
|
|
433 }
|
|
|
434
|
|
|
435 cycle->connection_n = ecf->connections;
|
|
|
436
|
|
|
437 for (m = 0; ngx_modules[m]; m++) {
|
|
|
438 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
439 continue;
|
|
|
440 }
|
|
|
441
|
|
|
442 if (ngx_modules[m]->ctx_index == ecf->use) {
|
|
|
443 module = ngx_modules[m]->ctx;
|
|
|
444 if (module->actions.init(cycle) == NGX_ERROR) {
|
|
|
445 /* fatal */
|
|
|
446 exit(2);
|
|
|
447 }
|
|
|
448 break;
|
|
|
449 }
|
|
|
450 }
|
|
|
451
|
|
|
452 cycle->connections = ngx_alloc(sizeof(ngx_connection_t) * ecf->connections,
|
|
|
453 cycle->log);
|
|
|
454 if (cycle->connections == NULL) {
|
|
|
455 return NGX_ERROR;
|
|
|
456 }
|
|
|
457
|
|
|
458 c = cycle->connections;
|
|
|
459 for (i = 0; i < cycle->connection_n; i++) {
|
|
|
460 c[i].fd = (ngx_socket_t) -1;
|
|
|
461 c[i].data = NULL;
|
|
|
462 #if (NGX_THREADS)
|
|
|
463 c[i].lock = 0;
|
|
|
464 #endif
|
|
|
465 }
|
|
|
466
|
|
|
467 cycle->read_events = ngx_alloc(sizeof(ngx_event_t) * ecf->connections,
|
|
|
468 cycle->log);
|
|
|
469 if (cycle->read_events == NULL) {
|
|
|
470 return NGX_ERROR;
|
|
|
471 }
|
|
|
472
|
|
|
473 rev = cycle->read_events;
|
|
|
474 for (i = 0; i < cycle->connection_n; i++) {
|
|
|
475 rev[i].closed = 1;
|
|
30
|
476 rev[i].instance = 1;
|
|
0
|
477 #if (NGX_THREADS)
|
|
|
478 rev[i].lock = &c[i].lock;
|
|
|
479 rev[i].own_lock = &c[i].lock;
|
|
|
480 #endif
|
|
|
481 }
|
|
|
482
|
|
|
483 cycle->write_events = ngx_alloc(sizeof(ngx_event_t) * ecf->connections,
|
|
30
|
484 cycle->log);
|
|
0
|
485 if (cycle->write_events == NULL) {
|
|
|
486 return NGX_ERROR;
|
|
|
487 }
|
|
|
488
|
|
|
489 wev = cycle->write_events;
|
|
|
490 for (i = 0; i < cycle->connection_n; i++) {
|
|
|
491 wev[i].closed = 1;
|
|
|
492 #if (NGX_THREADS)
|
|
|
493 wev[i].lock = &c[i].lock;
|
|
|
494 wev[i].own_lock = &c[i].lock;
|
|
|
495 #endif
|
|
|
496 }
|
|
|
497
|
|
|
498 /* for each listening socket */
|
|
|
499
|
|
|
500 s = cycle->listening.elts;
|
|
|
501 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
502
|
|
|
503 fd = s[i].fd;
|
|
|
504
|
|
10
|
505 #if (NGX_WIN32)
|
|
0
|
506 /*
|
|
|
507 * Winsock assignes a socket number divisible by 4
|
|
|
508 * so to find a connection we divide a socket number by 4.
|
|
|
509 */
|
|
|
510
|
|
|
511 fd /= 4;
|
|
|
512 #endif
|
|
|
513
|
|
|
514 c = &cycle->connections[fd];
|
|
|
515 rev = &cycle->read_events[fd];
|
|
|
516 wev = &cycle->write_events[fd];
|
|
|
517
|
|
|
518 ngx_memzero(c, sizeof(ngx_connection_t));
|
|
|
519 ngx_memzero(rev, sizeof(ngx_event_t));
|
|
30
|
520 ngx_memzero(wev, sizeof(ngx_event_t));
|
|
0
|
521
|
|
|
522 c->fd = s[i].fd;
|
|
|
523 c->listening = &s[i];
|
|
|
524
|
|
|
525 c->ctx = s[i].ctx;
|
|
|
526 c->servers = s[i].servers;
|
|
|
527 c->log = s[i].log;
|
|
|
528 c->read = rev;
|
|
|
529
|
|
|
530 /* required by iocp in "c->write->active = 1" */
|
|
|
531 c->write = wev;
|
|
|
532
|
|
|
533 /* required by poll */
|
|
|
534 wev->index = NGX_INVALID_INDEX;
|
|
|
535
|
|
|
536 rev->log = c->log;
|
|
|
537 rev->data = c;
|
|
|
538 rev->index = NGX_INVALID_INDEX;
|
|
|
539
|
|
|
540 rev->available = 0;
|
|
|
541
|
|
|
542 rev->accept = 1;
|
|
|
543
|
|
18
|
544 #if (NGX_HAVE_DEFERRED_ACCEPT)
|
|
0
|
545 rev->deferred_accept = s[i].deferred_accept;
|
|
|
546 #endif
|
|
|
547
|
|
|
548 if (!(ngx_event_flags & NGX_USE_IOCP_EVENT)) {
|
|
|
549 if (s[i].remain) {
|
|
|
550
|
|
|
551 /*
|
|
|
552 * delete the old accept events that were bound to
|
|
|
553 * the old cycle read events array
|
|
|
554 */
|
|
|
555
|
|
|
556 if (ngx_del_event(&cycle->old_cycle->read_events[fd],
|
|
|
557 NGX_READ_EVENT, NGX_CLOSE_EVENT) == NGX_ERROR)
|
|
|
558 {
|
|
|
559 return NGX_ERROR;
|
|
|
560 }
|
|
|
561
|
|
|
562 cycle->old_cycle->connections[fd].fd = (ngx_socket_t) -1;
|
|
|
563 }
|
|
|
564 }
|
|
|
565
|
|
10
|
566 #if (NGX_WIN32)
|
|
0
|
567
|
|
|
568 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
|
|
58
|
569 rev->handler = ngx_event_acceptex;
|
|
0
|
570
|
|
|
571 if (ngx_add_event(rev, 0, NGX_IOCP_ACCEPT) == NGX_ERROR) {
|
|
|
572 return NGX_ERROR;
|
|
|
573 }
|
|
|
574
|
|
|
575 iocpcf = ngx_event_get_conf(cycle->conf_ctx, ngx_iocp_module);
|
|
|
576 if (ngx_event_post_acceptex(&s[i], iocpcf->post_acceptex)
|
|
|
577 == NGX_ERROR)
|
|
|
578 {
|
|
|
579 return NGX_ERROR;
|
|
|
580 }
|
|
|
581
|
|
|
582 } else {
|
|
58
|
583 rev->handler = ngx_event_accept;
|
|
10
|
584
|
|
0
|
585 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
586 return NGX_ERROR;
|
|
|
587 }
|
|
|
588 }
|
|
|
589
|
|
|
590 #else
|
|
|
591
|
|
58
|
592 rev->handler = ngx_event_accept;
|
|
0
|
593
|
|
|
594 if (ngx_accept_mutex) {
|
|
|
595 continue;
|
|
|
596 }
|
|
|
597
|
|
|
598 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
|
|
|
599 if (ngx_add_conn(c) == NGX_ERROR) {
|
|
|
600 return NGX_ERROR;
|
|
|
601 }
|
|
|
602
|
|
|
603 } else {
|
|
|
604 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
605 return NGX_ERROR;
|
|
|
606 }
|
|
|
607 }
|
|
|
608
|
|
|
609 #endif
|
|
|
610 }
|
|
|
611
|
|
|
612 return NGX_OK;
|
|
|
613 }
|
|
|
614
|
|
|
615
|
|
58
|
616 ngx_int_t
|
|
|
617 ngx_send_lowat(ngx_connection_t *c, size_t lowat)
|
|
2
|
618 {
|
|
|
619 int sndlowat;
|
|
|
620
|
|
4
|
621 #if (NGX_HAVE_LOWAT_EVENT)
|
|
2
|
622
|
|
4
|
623 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
2
|
624 c->write->available = lowat;
|
|
|
625 return NGX_OK;
|
|
|
626 }
|
|
|
627
|
|
|
628 #endif
|
|
|
629
|
|
|
630 if (lowat == 0 || c->sndlowat) {
|
|
|
631 return NGX_OK;
|
|
|
632 }
|
|
|
633
|
|
|
634 sndlowat = (int) lowat;
|
|
|
635
|
|
|
636 if (setsockopt(c->fd, SOL_SOCKET, SO_SNDLOWAT,
|
|
|
637 (const void *) &sndlowat, sizeof(int)) == -1)
|
|
|
638 {
|
|
|
639 ngx_connection_error(c, ngx_socket_errno,
|
|
|
640 "setsockopt(SO_SNDLOWAT) failed");
|
|
|
641 return NGX_ERROR;
|
|
|
642 }
|
|
|
643
|
|
|
644 c->sndlowat = 1;
|
|
|
645
|
|
|
646 return NGX_OK;
|
|
|
647 }
|
|
|
648
|
|
|
649
|
|
58
|
650 static char *
|
|
|
651 ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
652 {
|
|
50
|
653 char *rv;
|
|
0
|
654 void ***ctx;
|
|
50
|
655 ngx_uint_t i;
|
|
0
|
656 ngx_conf_t pcf;
|
|
50
|
657 ngx_event_module_t *m;
|
|
0
|
658
|
|
|
659 /* count the number of the event modules and set up their indices */
|
|
|
660
|
|
|
661 ngx_event_max_module = 0;
|
|
50
|
662 for (i = 0; ngx_modules[i]; i++) {
|
|
|
663 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
|
0
|
664 continue;
|
|
|
665 }
|
|
|
666
|
|
50
|
667 ngx_modules[i]->ctx_index = ngx_event_max_module++;
|
|
0
|
668 }
|
|
|
669
|
|
50
|
670 ctx = ngx_pcalloc(cf->pool, sizeof(void *));
|
|
|
671 if (ctx == NULL) {
|
|
|
672 return NGX_CONF_ERROR;
|
|
|
673 }
|
|
0
|
674
|
|
50
|
675 *ctx = ngx_pcalloc(cf->pool, ngx_event_max_module * sizeof(void *));
|
|
|
676 if (*ctx == NULL) {
|
|
|
677 return NGX_CONF_ERROR;
|
|
|
678 }
|
|
0
|
679
|
|
|
680 *(void **) conf = ctx;
|
|
|
681
|
|
50
|
682 for (i = 0; ngx_modules[i]; i++) {
|
|
|
683 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
|
0
|
684 continue;
|
|
|
685 }
|
|
|
686
|
|
50
|
687 m = ngx_modules[i]->ctx;
|
|
0
|
688
|
|
50
|
689 if (m->create_conf) {
|
|
|
690 (*ctx)[ngx_modules[i]->ctx_index] = m->create_conf(cf->cycle);
|
|
|
691 if ((*ctx)[ngx_modules[i]->ctx_index] == NULL) {
|
|
|
692 return NGX_CONF_ERROR;
|
|
|
693 }
|
|
0
|
694 }
|
|
|
695 }
|
|
|
696
|
|
|
697 pcf = *cf;
|
|
|
698 cf->ctx = ctx;
|
|
|
699 cf->module_type = NGX_EVENT_MODULE;
|
|
|
700 cf->cmd_type = NGX_EVENT_CONF;
|
|
50
|
701
|
|
0
|
702 rv = ngx_conf_parse(cf, NULL);
|
|
50
|
703
|
|
0
|
704 *cf = pcf;
|
|
|
705
|
|
|
706 if (rv != NGX_CONF_OK)
|
|
|
707 return rv;
|
|
|
708
|
|
50
|
709 for (i = 0; ngx_modules[i]; i++) {
|
|
|
710 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
|
0
|
711 continue;
|
|
|
712 }
|
|
|
713
|
|
50
|
714 m = ngx_modules[i]->ctx;
|
|
0
|
715
|
|
50
|
716 if (m->init_conf) {
|
|
|
717 rv = m->init_conf(cf->cycle, (*ctx)[ngx_modules[i]->ctx_index]);
|
|
0
|
718 if (rv != NGX_CONF_OK) {
|
|
|
719 return rv;
|
|
|
720 }
|
|
|
721 }
|
|
|
722 }
|
|
|
723
|
|
|
724 return NGX_CONF_OK;
|
|
|
725 }
|
|
|
726
|
|
|
727
|
|
58
|
728 static char *
|
|
|
729 ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
730 {
|
|
|
731 ngx_event_conf_t *ecf = conf;
|
|
|
732
|
|
|
733 ngx_str_t *value;
|
|
|
734
|
|
|
735 if (ecf->connections != NGX_CONF_UNSET_UINT) {
|
|
|
736 return "is duplicate" ;
|
|
|
737 }
|
|
|
738
|
|
|
739 value = cf->args->elts;
|
|
|
740 ecf->connections = ngx_atoi(value[1].data, value[1].len);
|
|
|
741 if (ecf->connections == (ngx_uint_t) NGX_ERROR) {
|
|
|
742 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
743 "invalid number \"%V\"", &value[1]);
|
|
0
|
744
|
|
|
745 return NGX_CONF_ERROR;
|
|
|
746 }
|
|
|
747
|
|
|
748 cf->cycle->connection_n = ecf->connections;
|
|
|
749
|
|
|
750 return NGX_CONF_OK;
|
|
|
751 }
|
|
|
752
|
|
|
753
|
|
58
|
754 static char *
|
|
|
755 ngx_event_use(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
756 {
|
|
|
757 ngx_event_conf_t *ecf = conf;
|
|
|
758
|
|
|
759 ngx_int_t m;
|
|
|
760 ngx_str_t *value;
|
|
|
761 ngx_event_conf_t *old_ecf;
|
|
|
762 ngx_event_module_t *module;
|
|
|
763
|
|
|
764 if (ecf->use != NGX_CONF_UNSET_UINT) {
|
|
|
765 return "is duplicate" ;
|
|
|
766 }
|
|
|
767
|
|
|
768 value = cf->args->elts;
|
|
|
769
|
|
|
770 if (cf->cycle->old_cycle->conf_ctx) {
|
|
|
771 old_ecf = ngx_event_get_conf(cf->cycle->old_cycle->conf_ctx,
|
|
|
772 ngx_event_core_module);
|
|
|
773 } else {
|
|
|
774 old_ecf = NULL;
|
|
|
775 }
|
|
|
776
|
|
|
777
|
|
|
778 for (m = 0; ngx_modules[m]; m++) {
|
|
|
779 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
780 continue;
|
|
|
781 }
|
|
|
782
|
|
|
783 module = ngx_modules[m]->ctx;
|
|
|
784 if (module->name->len == value[1].len) {
|
|
|
785 if (ngx_strcmp(module->name->data, value[1].data) == 0) {
|
|
|
786 ecf->use = ngx_modules[m]->ctx_index;
|
|
|
787 ecf->name = module->name->data;
|
|
|
788
|
|
|
789 if (ngx_process == NGX_PROCESS_SINGLE
|
|
|
790 && old_ecf
|
|
|
791 && old_ecf->use != ecf->use)
|
|
|
792 {
|
|
|
793 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
16
|
794 "when the server runs without a master process "
|
|
|
795 "the \"%V\" event type must be the same as "
|
|
|
796 "in previous configuration - \"%s\" "
|
|
|
797 "and it can not be changed on the fly, "
|
|
|
798 "to change it you need to stop server "
|
|
|
799 "and start it again",
|
|
|
800 &value[1], old_ecf->name);
|
|
0
|
801
|
|
|
802 return NGX_CONF_ERROR;
|
|
|
803 }
|
|
|
804
|
|
|
805 return NGX_CONF_OK;
|
|
|
806 }
|
|
|
807 }
|
|
|
808 }
|
|
|
809
|
|
|
810 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
811 "invalid event type \"%V\"", &value[1]);
|
|
0
|
812
|
|
|
813 return NGX_CONF_ERROR;
|
|
|
814 }
|
|
|
815
|
|
|
816
|
|
58
|
817 static char *
|
|
|
818 ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
819 {
|
|
|
820 #if (NGX_DEBUG)
|
|
|
821 ngx_event_conf_t *ecf = conf;
|
|
|
822
|
|
|
823 in_addr_t *addr;
|
|
|
824 ngx_str_t *value;
|
|
|
825 struct hostent *h;
|
|
|
826
|
|
|
827 value = cf->args->elts;
|
|
|
828
|
|
|
829 /* AF_INET only */
|
|
|
830
|
|
50
|
831 addr = ngx_array_push(&ecf->debug_connection);
|
|
|
832 if (addr == NULL) {
|
|
0
|
833 return NGX_CONF_ERROR;
|
|
|
834 }
|
|
|
835
|
|
|
836 *addr = inet_addr((char *) value[1].data);
|
|
|
837
|
|
|
838 if (*addr != INADDR_NONE) {
|
|
|
839 return NGX_OK;
|
|
|
840 }
|
|
|
841
|
|
|
842 h = gethostbyname((char *) value[1].data);
|
|
|
843
|
|
|
844 if (h == NULL || h->h_addr_list[0] == NULL) {
|
|
|
845 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
846 "host \"%s\" not found", value[1].data);
|
|
0
|
847 return NGX_CONF_ERROR;
|
|
|
848 }
|
|
|
849
|
|
|
850 *addr = *(in_addr_t *)(h->h_addr_list[0]);
|
|
|
851
|
|
|
852 #else
|
|
|
853
|
|
|
854 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
855 "\"debug_connection\" is ignored, you need to rebuild "
|
|
|
856 "nginx using --with-debug option to enable it");
|
|
|
857
|
|
|
858 #endif
|
|
|
859
|
|
|
860 return NGX_OK;
|
|
|
861 }
|
|
|
862
|
|
|
863
|
|
58
|
864 static void *
|
|
|
865 ngx_event_create_conf(ngx_cycle_t *cycle)
|
|
0
|
866 {
|
|
|
867 ngx_event_conf_t *ecf;
|
|
|
868
|
|
50
|
869 ecf = ngx_palloc(cycle->pool, sizeof(ngx_event_conf_t));
|
|
|
870 if (ecf == NULL) {
|
|
|
871 return NGX_CONF_ERROR;
|
|
|
872 }
|
|
0
|
873
|
|
|
874 ecf->connections = NGX_CONF_UNSET_UINT;
|
|
|
875 ecf->use = NGX_CONF_UNSET_UINT;
|
|
|
876 ecf->multi_accept = NGX_CONF_UNSET;
|
|
|
877 ecf->accept_mutex = NGX_CONF_UNSET;
|
|
|
878 ecf->accept_mutex_delay = NGX_CONF_UNSET_MSEC;
|
|
|
879 ecf->name = (void *) NGX_CONF_UNSET;
|
|
|
880
|
|
|
881 #if (NGX_DEBUG)
|
|
50
|
882
|
|
|
883 if (ngx_array_init(&ecf->debug_connection, cycle->pool, 4,
|
|
|
884 sizeof(in_addr_t)) == NGX_ERROR)
|
|
|
885 {
|
|
|
886 return NGX_CONF_ERROR;
|
|
|
887 }
|
|
|
888
|
|
0
|
889 #endif
|
|
|
890
|
|
|
891 return ecf;
|
|
|
892 }
|
|
|
893
|
|
|
894
|
|
58
|
895 static char *
|
|
|
896 ngx_event_init_conf(ngx_cycle_t *cycle, void *conf)
|
|
0
|
897 {
|
|
|
898 ngx_event_conf_t *ecf = conf;
|
|
16
|
899
|
|
50
|
900 #if (NGX_HAVE_EPOLL) && !(NGX_TEST_BUILD_EPOLL)
|
|
|
901 int fd;
|
|
|
902 #endif
|
|
|
903 #if (NGX_HAVE_RTSIG)
|
|
|
904 ngx_uint_t rtsig;
|
|
|
905 #endif
|
|
16
|
906 ngx_int_t i, connections;
|
|
|
907 ngx_module_t *module;
|
|
|
908 ngx_core_conf_t *ccf;
|
|
|
909 ngx_event_module_t *event_module;
|
|
|
910
|
|
|
911 connections = NGX_CONF_UNSET_UINT;
|
|
|
912 module = NULL;
|
|
|
913
|
|
18
|
914 #if (NGX_HAVE_EPOLL) && !(NGX_TEST_BUILD_EPOLL)
|
|
16
|
915
|
|
|
916 fd = epoll_create(100);
|
|
|
917
|
|
|
918 if (fd != -1) {
|
|
|
919 close(fd);
|
|
|
920 connections = DEFAULT_CONNECTIONS;
|
|
|
921 module = &ngx_epoll_module;
|
|
|
922
|
|
|
923 } else if (ngx_errno != NGX_ENOSYS) {
|
|
|
924 connections = DEFAULT_CONNECTIONS;
|
|
|
925 module = &ngx_epoll_module;
|
|
|
926 }
|
|
|
927
|
|
|
928 #endif
|
|
|
929
|
|
18
|
930 #if (NGX_HAVE_RTSIG)
|
|
16
|
931
|
|
|
932 if (module == NULL) {
|
|
|
933 connections = DEFAULT_CONNECTIONS;
|
|
|
934 module = &ngx_rtsig_module;
|
|
|
935 rtsig = 1;
|
|
50
|
936
|
|
|
937 } else {
|
|
|
938 rtsig = 0;
|
|
16
|
939 }
|
|
|
940
|
|
|
941 #endif
|
|
|
942
|
|
18
|
943 #if (NGX_HAVE_DEVPOLL)
|
|
16
|
944
|
|
|
945 connections = DEFAULT_CONNECTIONS;
|
|
|
946 module = &ngx_devpoll_module;
|
|
|
947
|
|
0
|
948 #endif
|
|
|
949
|
|
18
|
950 #if (NGX_HAVE_KQUEUE)
|
|
0
|
951
|
|
16
|
952 connections = DEFAULT_CONNECTIONS;
|
|
|
953 module = &ngx_kqueue_module;
|
|
0
|
954
|
|
16
|
955 #endif
|
|
0
|
956
|
|
18
|
957 #if (NGX_HAVE_SELECT)
|
|
0
|
958
|
|
16
|
959 if (module == NULL) {
|
|
0
|
960
|
|
50
|
961 #if (NGX_WIN32 || FD_SETSIZE >= DEFAULT_CONNECTIONS)
|
|
16
|
962 connections = DEFAULT_CONNECTIONS;
|
|
0
|
963 #else
|
|
50
|
964 connections = FD_SETSIZE;
|
|
16
|
965 #endif
|
|
|
966 module = &ngx_select_module;
|
|
|
967 }
|
|
|
968
|
|
0
|
969 #endif
|
|
|
970
|
|
16
|
971 if (module == NULL) {
|
|
|
972 for (i = 0; ngx_modules[i]; i++) {
|
|
|
973 if (ngx_modules[i]->type == NGX_EVENT_MODULE) {
|
|
|
974 event_module = ngx_modules[i]->ctx;
|
|
0
|
975
|
|
16
|
976 if (ngx_strcmp(event_module->name->data, event_core_name.data)
|
|
|
977 == 0)
|
|
|
978 {
|
|
|
979 continue;
|
|
|
980 }
|
|
0
|
981
|
|
16
|
982 module = ngx_modules[i];
|
|
|
983 break;
|
|
0
|
984 }
|
|
|
985 }
|
|
|
986 }
|
|
|
987
|
|
16
|
988 if (module == NULL) {
|
|
0
|
989 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0, "no events module found");
|
|
|
990 return NGX_CONF_ERROR;
|
|
|
991 }
|
|
|
992
|
|
16
|
993 ngx_conf_init_unsigned_value(ecf->connections, connections);
|
|
|
994 cycle->connection_n = ecf->connections;
|
|
0
|
995
|
|
16
|
996 ngx_conf_init_unsigned_value(ecf->use, module->ctx_index);
|
|
0
|
997
|
|
16
|
998 event_module = module->ctx;
|
|
|
999 ngx_conf_init_ptr_value(ecf->name, event_module->name->data);
|
|
0
|
1000
|
|
|
1001 ngx_conf_init_value(ecf->multi_accept, 0);
|
|
|
1002 ngx_conf_init_value(ecf->accept_mutex, 1);
|
|
|
1003 ngx_conf_init_msec_value(ecf->accept_mutex_delay, 500);
|
|
|
1004
|
|
16
|
1005
|
|
50
|
1006 #if (NGX_HAVE_RTSIG)
|
|
|
1007
|
|
|
1008 if (!rtsig) {
|
|
|
1009 return NGX_CONF_OK;
|
|
|
1010 }
|
|
|
1011
|
|
|
1012 #endif
|
|
|
1013
|
|
|
1014 if (ecf->accept_mutex) {
|
|
16
|
1015 return NGX_CONF_OK;
|
|
0
|
1016 }
|
|
16
|
1017
|
|
|
1018 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
|
|
0
|
1019
|
|
16
|
1020 if (ccf->worker_processes == 0) {
|
|
|
1021 return NGX_CONF_OK;
|
|
|
1022 }
|
|
|
1023
|
|
|
1024 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
|
|
|
1025 "the \"rtsig\" method requires \"accept_mutex\" to be on");
|
|
|
1026
|
|
|
1027 return NGX_CONF_ERROR;
|
|
0
|
1028 }
|
|
|
1029
|
|
|
1030
|
|
58
|
1031 static char *
|
|
|
1032 ngx_accept_mutex_check(ngx_conf_t *cf, void *post, void *data)
|
|
0
|
1033 {
|
|
|
1034 #if !(NGX_HAVE_ATOMIC_OPS)
|
|
|
1035
|
|
|
1036 ngx_flag_t *fp = data;
|
|
|
1037
|
|
|
1038 *fp = 0;
|
|
|
1039
|
|
|
1040 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
52
|
1041 "\"accept_mutex\" is not supported on this platform, "
|
|
|
1042 "ignored");
|
|
0
|
1043
|
|
|
1044 #endif
|
|
|
1045
|
|
|
1046 return NGX_CONF_OK;
|
|
|
1047 }
|
