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0
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_event.h>
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10
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11
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12 #define DEFAULT_CONNECTIONS 512
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13
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14
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16
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15 extern ngx_module_t ngx_kqueue_module;
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16 extern ngx_module_t ngx_devpoll_module;
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17 extern ngx_module_t ngx_epoll_module;
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18 extern ngx_module_t ngx_rtsig_module;
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0
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19 extern ngx_module_t ngx_select_module;
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20
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21
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22 static ngx_int_t ngx_event_module_init(ngx_cycle_t *cycle);
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23 static ngx_int_t ngx_event_process_init(ngx_cycle_t *cycle);
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24 static char *ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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25
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26 static char *ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd,
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27 void *conf);
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28 static char *ngx_event_use(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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29 static char *ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd,
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30 void *conf);
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31
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32 static void *ngx_event_create_conf(ngx_cycle_t *cycle);
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33 static char *ngx_event_init_conf(ngx_cycle_t *cycle, void *conf);
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34 static char *ngx_accept_mutex_check(ngx_conf_t *cf, void *post, void *data);
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35
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36
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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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94 NGX_MODULE,
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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,
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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 static ngx_int_t ngx_event_module_init(ngx_cycle_t *cycle)
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176 {
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10
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177 #if !(NGX_WIN32)
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0
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178
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22
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179 size_t size;
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180 void ***cf;
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181 char *shared;
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182 ngx_core_conf_t *ccf;
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183 ngx_event_conf_t *ecf;
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184
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185 cf = ngx_get_conf(cycle->conf_ctx, ngx_events_module);
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186
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187 if (cf == NULL) {
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188 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
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189 "no \"events\" section in configuration");
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190 return NGX_ERROR;
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191 }
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192
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193 ecf = (*cf)[ngx_event_core_module.ctx_index];
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194
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195 ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
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196 "using the \"%s\" event method", ecf->name);
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197
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0
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198
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199 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
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200
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201 if (ccf->master == 0 || ngx_accept_mutex_ptr) {
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202 return NGX_OK;
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203 }
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204
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205
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32
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206 /* TODO: adjust cache line size, 128 is P4 cache line size */
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0
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207
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208 size = 128 /* ngx_accept_mutex */
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209 + 128; /* ngx_connection_counter */
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210
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211 #if (NGX_STAT_STUB)
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212
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213 size += 128 /* ngx_stat_accepted */
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44
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214 + 128 /* ngx_stat_handled */
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0
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215 + 128 /* ngx_stat_requests */
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216 + 128 /* ngx_stat_active */
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217 + 128 /* ngx_stat_reading */
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218 + 128; /* ngx_stat_writing */
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219
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220 #endif
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221
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50
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222 shared = ngx_create_shared_memory(size, cycle->log);
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223 if (shared == NULL) {
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0
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224 return NGX_ERROR;
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225 }
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226
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227 ngx_accept_mutex_ptr = (ngx_atomic_t *) shared;
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228 ngx_connection_counter = (ngx_atomic_t *) (shared + 128);
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229
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230 #if (NGX_STAT_STUB)
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231
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232 ngx_stat_accepted = (ngx_atomic_t *) (shared + 2 * 128);
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44
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233 ngx_stat_handled = (ngx_atomic_t *) (shared + 3 * 128);
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234 ngx_stat_requests = (ngx_atomic_t *) (shared + 4 * 128);
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235 ngx_stat_active = (ngx_atomic_t *) (shared + 5 * 128);
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236 ngx_stat_reading = (ngx_atomic_t *) (shared + 6 * 128);
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237 ngx_stat_writing = (ngx_atomic_t *) (shared + 7 * 128);
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0
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238
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239 #endif
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240
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241 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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10
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242 "counter: %p, %d",
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0
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243 ngx_connection_counter, *ngx_connection_counter);
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244
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245 #endif
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246
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247 return NGX_OK;
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248 }
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249
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250
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251 static ngx_int_t ngx_event_process_init(ngx_cycle_t *cycle)
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252 {
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253 ngx_uint_t m, i;
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254 ngx_socket_t fd;
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255 ngx_event_t *rev, *wev;
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256 ngx_listening_t *s;
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257 ngx_connection_t *c;
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258 ngx_core_conf_t *ccf;
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259 ngx_event_conf_t *ecf;
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260 ngx_event_module_t *module;
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10
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261 #if (NGX_WIN32)
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0
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262 ngx_iocp_conf_t *iocpcf;
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263 #endif
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264
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265 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
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266 ecf = ngx_event_get_conf(cycle->conf_ctx, ngx_event_core_module);
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267
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268 if (ngx_accept_mutex_ptr && ccf->worker_processes > 1 && ecf->accept_mutex)
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269 {
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270 ngx_accept_mutex = ngx_accept_mutex_ptr;
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271 ngx_accept_mutex_held = 0;
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272 ngx_accept_mutex_delay = ecf->accept_mutex_delay;
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273 }
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274
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275 #if (NGX_THREADS)
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50
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276 ngx_posted_events_mutex = ngx_mutex_init(cycle->log, 0);
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277 if (ngx_posted_events_mutex == NULL) {
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0
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278 return NGX_ERROR;
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279 }
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280 #endif
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281
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282 if (ngx_event_timer_init(cycle->log) == NGX_ERROR) {
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283 return NGX_ERROR;
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284 }
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285
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286 cycle->connection_n = ecf->connections;
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287
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288 for (m = 0; ngx_modules[m]; m++) {
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289 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
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290 continue;
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291 }
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292
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293 if (ngx_modules[m]->ctx_index == ecf->use) {
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294 module = ngx_modules[m]->ctx;
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295 if (module->actions.init(cycle) == NGX_ERROR) {
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296 /* fatal */
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297 exit(2);
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298 }
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299 break;
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300 }
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301 }
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302
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303 cycle->connections = ngx_alloc(sizeof(ngx_connection_t) * ecf->connections,
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304 cycle->log);
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305 if (cycle->connections == NULL) {
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306 return NGX_ERROR;
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307 }
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308
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309 c = cycle->connections;
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310 for (i = 0; i < cycle->connection_n; i++) {
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311 c[i].fd = (ngx_socket_t) -1;
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312 c[i].data = NULL;
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313 #if (NGX_THREADS)
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314 c[i].lock = 0;
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315 #endif
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316 }
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317
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318 cycle->read_events = ngx_alloc(sizeof(ngx_event_t) * ecf->connections,
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319 cycle->log);
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320 if (cycle->read_events == NULL) {
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321 return NGX_ERROR;
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322 }
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323
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324 rev = cycle->read_events;
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325 for (i = 0; i < cycle->connection_n; i++) {
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326 rev[i].closed = 1;
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30
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327 rev[i].instance = 1;
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0
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328 #if (NGX_THREADS)
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329 rev[i].lock = &c[i].lock;
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330 rev[i].own_lock = &c[i].lock;
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331 #endif
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332 }
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333
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334 cycle->write_events = ngx_alloc(sizeof(ngx_event_t) * ecf->connections,
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30
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335 cycle->log);
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0
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336 if (cycle->write_events == NULL) {
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337 return NGX_ERROR;
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338 }
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339
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340 wev = cycle->write_events;
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341 for (i = 0; i < cycle->connection_n; i++) {
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342 wev[i].closed = 1;
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343 #if (NGX_THREADS)
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344 wev[i].lock = &c[i].lock;
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345 wev[i].own_lock = &c[i].lock;
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346 #endif
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347 }
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348
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349 /* for each listening socket */
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350
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351 s = cycle->listening.elts;
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352 for (i = 0; i < cycle->listening.nelts; i++) {
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353
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354 fd = s[i].fd;
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355
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10
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356 #if (NGX_WIN32)
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0
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357 /*
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358 * Winsock assignes a socket number divisible by 4
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359 * so to find a connection we divide a socket number by 4.
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360 */
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361
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362 fd /= 4;
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363 #endif
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364
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365 c = &cycle->connections[fd];
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366 rev = &cycle->read_events[fd];
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367 wev = &cycle->write_events[fd];
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368
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369 ngx_memzero(c, sizeof(ngx_connection_t));
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370 ngx_memzero(rev, sizeof(ngx_event_t));
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30
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371 ngx_memzero(wev, sizeof(ngx_event_t));
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0
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372
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373 c->fd = s[i].fd;
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374 c->listening = &s[i];
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375
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376 c->ctx = s[i].ctx;
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377 c->servers = s[i].servers;
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378 c->log = s[i].log;
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379 c->read = rev;
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380
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381 /* required by iocp in "c->write->active = 1" */
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382 c->write = wev;
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383
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384 /* required by poll */
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385 wev->index = NGX_INVALID_INDEX;
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386
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387 rev->log = c->log;
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388 rev->data = c;
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389 rev->index = NGX_INVALID_INDEX;
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390
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391 rev->available = 0;
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392
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393 rev->accept = 1;
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394
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18
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395 #if (NGX_HAVE_DEFERRED_ACCEPT)
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0
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396 rev->deferred_accept = s[i].deferred_accept;
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397 #endif
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398
|
|
|
399 if (!(ngx_event_flags & NGX_USE_IOCP_EVENT)) {
|
|
|
400 if (s[i].remain) {
|
|
|
401
|
|
|
402 /*
|
|
|
403 * delete the old accept events that were bound to
|
|
|
404 * the old cycle read events array
|
|
|
405 */
|
|
|
406
|
|
|
407 if (ngx_del_event(&cycle->old_cycle->read_events[fd],
|
|
|
408 NGX_READ_EVENT, NGX_CLOSE_EVENT) == NGX_ERROR)
|
|
|
409 {
|
|
|
410 return NGX_ERROR;
|
|
|
411 }
|
|
|
412
|
|
|
413 cycle->old_cycle->connections[fd].fd = (ngx_socket_t) -1;
|
|
|
414 }
|
|
|
415 }
|
|
|
416
|
|
10
|
417 #if (NGX_WIN32)
|
|
0
|
418
|
|
|
419 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
|
|
10
|
420 rev->event_handler = ngx_event_acceptex;
|
|
0
|
421
|
|
|
422 if (ngx_add_event(rev, 0, NGX_IOCP_ACCEPT) == NGX_ERROR) {
|
|
|
423 return NGX_ERROR;
|
|
|
424 }
|
|
|
425
|
|
|
426 iocpcf = ngx_event_get_conf(cycle->conf_ctx, ngx_iocp_module);
|
|
|
427 if (ngx_event_post_acceptex(&s[i], iocpcf->post_acceptex)
|
|
|
428 == NGX_ERROR)
|
|
|
429 {
|
|
|
430 return NGX_ERROR;
|
|
|
431 }
|
|
|
432
|
|
|
433 } else {
|
|
10
|
434 rev->event_handler = ngx_event_accept;
|
|
|
435
|
|
0
|
436 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
437 return NGX_ERROR;
|
|
|
438 }
|
|
|
439 }
|
|
|
440
|
|
|
441 #else
|
|
|
442
|
|
10
|
443 rev->event_handler = ngx_event_accept;
|
|
0
|
444
|
|
|
445 if (ngx_accept_mutex) {
|
|
|
446 continue;
|
|
|
447 }
|
|
|
448
|
|
|
449 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
|
|
|
450 if (ngx_add_conn(c) == NGX_ERROR) {
|
|
|
451 return NGX_ERROR;
|
|
|
452 }
|
|
|
453
|
|
|
454 } else {
|
|
|
455 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
456 return NGX_ERROR;
|
|
|
457 }
|
|
|
458 }
|
|
|
459
|
|
|
460 #endif
|
|
|
461 }
|
|
|
462
|
|
|
463 return NGX_OK;
|
|
|
464 }
|
|
|
465
|
|
|
466
|
|
2
|
467 ngx_int_t ngx_send_lowat(ngx_connection_t *c, size_t lowat)
|
|
|
468 {
|
|
|
469 int sndlowat;
|
|
|
470
|
|
4
|
471 #if (NGX_HAVE_LOWAT_EVENT)
|
|
2
|
472
|
|
4
|
473 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
2
|
474 c->write->available = lowat;
|
|
|
475 return NGX_OK;
|
|
|
476 }
|
|
|
477
|
|
|
478 #endif
|
|
|
479
|
|
|
480 if (lowat == 0 || c->sndlowat) {
|
|
|
481 return NGX_OK;
|
|
|
482 }
|
|
|
483
|
|
|
484 sndlowat = (int) lowat;
|
|
|
485
|
|
|
486 if (setsockopt(c->fd, SOL_SOCKET, SO_SNDLOWAT,
|
|
|
487 (const void *) &sndlowat, sizeof(int)) == -1)
|
|
|
488 {
|
|
|
489 ngx_connection_error(c, ngx_socket_errno,
|
|
|
490 "setsockopt(SO_SNDLOWAT) failed");
|
|
|
491 return NGX_ERROR;
|
|
|
492 }
|
|
|
493
|
|
|
494 c->sndlowat = 1;
|
|
|
495
|
|
|
496 return NGX_OK;
|
|
|
497 }
|
|
|
498
|
|
|
499
|
|
0
|
500 static char *ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
501 {
|
|
50
|
502 char *rv;
|
|
0
|
503 void ***ctx;
|
|
50
|
504 ngx_uint_t i;
|
|
0
|
505 ngx_conf_t pcf;
|
|
50
|
506 ngx_event_module_t *m;
|
|
0
|
507
|
|
|
508 /* count the number of the event modules and set up their indices */
|
|
|
509
|
|
|
510 ngx_event_max_module = 0;
|
|
50
|
511 for (i = 0; ngx_modules[i]; i++) {
|
|
|
512 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
|
0
|
513 continue;
|
|
|
514 }
|
|
|
515
|
|
50
|
516 ngx_modules[i]->ctx_index = ngx_event_max_module++;
|
|
0
|
517 }
|
|
|
518
|
|
50
|
519 ctx = ngx_pcalloc(cf->pool, sizeof(void *));
|
|
|
520 if (ctx == NULL) {
|
|
|
521 return NGX_CONF_ERROR;
|
|
|
522 }
|
|
0
|
523
|
|
50
|
524 *ctx = ngx_pcalloc(cf->pool, ngx_event_max_module * sizeof(void *));
|
|
|
525 if (*ctx == NULL) {
|
|
|
526 return NGX_CONF_ERROR;
|
|
|
527 }
|
|
0
|
528
|
|
|
529 *(void **) conf = ctx;
|
|
|
530
|
|
50
|
531 for (i = 0; ngx_modules[i]; i++) {
|
|
|
532 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
|
0
|
533 continue;
|
|
|
534 }
|
|
|
535
|
|
50
|
536 m = ngx_modules[i]->ctx;
|
|
0
|
537
|
|
50
|
538 if (m->create_conf) {
|
|
|
539 (*ctx)[ngx_modules[i]->ctx_index] = m->create_conf(cf->cycle);
|
|
|
540 if ((*ctx)[ngx_modules[i]->ctx_index] == NULL) {
|
|
|
541 return NGX_CONF_ERROR;
|
|
|
542 }
|
|
0
|
543 }
|
|
|
544 }
|
|
|
545
|
|
|
546 pcf = *cf;
|
|
|
547 cf->ctx = ctx;
|
|
|
548 cf->module_type = NGX_EVENT_MODULE;
|
|
|
549 cf->cmd_type = NGX_EVENT_CONF;
|
|
50
|
550
|
|
0
|
551 rv = ngx_conf_parse(cf, NULL);
|
|
50
|
552
|
|
0
|
553 *cf = pcf;
|
|
|
554
|
|
|
555 if (rv != NGX_CONF_OK)
|
|
|
556 return rv;
|
|
|
557
|
|
50
|
558 for (i = 0; ngx_modules[i]; i++) {
|
|
|
559 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
|
0
|
560 continue;
|
|
|
561 }
|
|
|
562
|
|
50
|
563 m = ngx_modules[i]->ctx;
|
|
0
|
564
|
|
50
|
565 if (m->init_conf) {
|
|
|
566 rv = m->init_conf(cf->cycle, (*ctx)[ngx_modules[i]->ctx_index]);
|
|
0
|
567 if (rv != NGX_CONF_OK) {
|
|
|
568 return rv;
|
|
|
569 }
|
|
|
570 }
|
|
|
571 }
|
|
|
572
|
|
|
573 return NGX_CONF_OK;
|
|
|
574 }
|
|
|
575
|
|
|
576
|
|
|
577 static char *ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
578 void *conf)
|
|
|
579 {
|
|
|
580 ngx_event_conf_t *ecf = conf;
|
|
|
581
|
|
|
582 ngx_str_t *value;
|
|
|
583
|
|
|
584 if (ecf->connections != NGX_CONF_UNSET_UINT) {
|
|
|
585 return "is duplicate" ;
|
|
|
586 }
|
|
|
587
|
|
|
588 value = cf->args->elts;
|
|
|
589 ecf->connections = ngx_atoi(value[1].data, value[1].len);
|
|
|
590 if (ecf->connections == (ngx_uint_t) NGX_ERROR) {
|
|
|
591 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
592 "invalid number \"%V\"", &value[1]);
|
|
0
|
593
|
|
|
594 return NGX_CONF_ERROR;
|
|
|
595 }
|
|
|
596
|
|
|
597 cf->cycle->connection_n = ecf->connections;
|
|
|
598
|
|
|
599 return NGX_CONF_OK;
|
|
|
600 }
|
|
|
601
|
|
|
602
|
|
|
603 static char *ngx_event_use(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
604 {
|
|
|
605 ngx_event_conf_t *ecf = conf;
|
|
|
606
|
|
|
607 ngx_int_t m;
|
|
|
608 ngx_str_t *value;
|
|
|
609 ngx_event_conf_t *old_ecf;
|
|
|
610 ngx_event_module_t *module;
|
|
|
611
|
|
|
612 if (ecf->use != NGX_CONF_UNSET_UINT) {
|
|
|
613 return "is duplicate" ;
|
|
|
614 }
|
|
|
615
|
|
|
616 value = cf->args->elts;
|
|
|
617
|
|
|
618 if (cf->cycle->old_cycle->conf_ctx) {
|
|
|
619 old_ecf = ngx_event_get_conf(cf->cycle->old_cycle->conf_ctx,
|
|
|
620 ngx_event_core_module);
|
|
|
621 } else {
|
|
|
622 old_ecf = NULL;
|
|
|
623 }
|
|
|
624
|
|
|
625
|
|
|
626 for (m = 0; ngx_modules[m]; m++) {
|
|
|
627 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
628 continue;
|
|
|
629 }
|
|
|
630
|
|
|
631 module = ngx_modules[m]->ctx;
|
|
|
632 if (module->name->len == value[1].len) {
|
|
|
633 if (ngx_strcmp(module->name->data, value[1].data) == 0) {
|
|
|
634 ecf->use = ngx_modules[m]->ctx_index;
|
|
|
635 ecf->name = module->name->data;
|
|
|
636
|
|
|
637 if (ngx_process == NGX_PROCESS_SINGLE
|
|
|
638 && old_ecf
|
|
|
639 && old_ecf->use != ecf->use)
|
|
|
640 {
|
|
|
641 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
16
|
642 "when the server runs without a master process "
|
|
|
643 "the \"%V\" event type must be the same as "
|
|
|
644 "in previous configuration - \"%s\" "
|
|
|
645 "and it can not be changed on the fly, "
|
|
|
646 "to change it you need to stop server "
|
|
|
647 "and start it again",
|
|
|
648 &value[1], old_ecf->name);
|
|
0
|
649
|
|
|
650 return NGX_CONF_ERROR;
|
|
|
651 }
|
|
|
652
|
|
|
653 return NGX_CONF_OK;
|
|
|
654 }
|
|
|
655 }
|
|
|
656 }
|
|
|
657
|
|
|
658 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
659 "invalid event type \"%V\"", &value[1]);
|
|
0
|
660
|
|
|
661 return NGX_CONF_ERROR;
|
|
|
662 }
|
|
|
663
|
|
|
664
|
|
|
665 static char *ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
666 void *conf)
|
|
|
667 {
|
|
|
668 #if (NGX_DEBUG)
|
|
|
669 ngx_event_conf_t *ecf = conf;
|
|
|
670
|
|
|
671 in_addr_t *addr;
|
|
|
672 ngx_str_t *value;
|
|
|
673 struct hostent *h;
|
|
|
674
|
|
|
675 value = cf->args->elts;
|
|
|
676
|
|
|
677 /* AF_INET only */
|
|
|
678
|
|
50
|
679 addr = ngx_array_push(&ecf->debug_connection);
|
|
|
680 if (addr == NULL) {
|
|
0
|
681 return NGX_CONF_ERROR;
|
|
|
682 }
|
|
|
683
|
|
|
684 *addr = inet_addr((char *) value[1].data);
|
|
|
685
|
|
|
686 if (*addr != INADDR_NONE) {
|
|
|
687 return NGX_OK;
|
|
|
688 }
|
|
|
689
|
|
|
690 h = gethostbyname((char *) value[1].data);
|
|
|
691
|
|
|
692 if (h == NULL || h->h_addr_list[0] == NULL) {
|
|
|
693 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
694 "host \"%s\" not found", value[1].data);
|
|
0
|
695 return NGX_CONF_ERROR;
|
|
|
696 }
|
|
|
697
|
|
|
698 *addr = *(in_addr_t *)(h->h_addr_list[0]);
|
|
|
699
|
|
|
700 #else
|
|
|
701
|
|
|
702 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
703 "\"debug_connection\" is ignored, you need to rebuild "
|
|
|
704 "nginx using --with-debug option to enable it");
|
|
|
705
|
|
|
706 #endif
|
|
|
707
|
|
|
708 return NGX_OK;
|
|
|
709 }
|
|
|
710
|
|
|
711
|
|
|
712 static void *ngx_event_create_conf(ngx_cycle_t *cycle)
|
|
|
713 {
|
|
|
714 ngx_event_conf_t *ecf;
|
|
|
715
|
|
50
|
716 ecf = ngx_palloc(cycle->pool, sizeof(ngx_event_conf_t));
|
|
|
717 if (ecf == NULL) {
|
|
|
718 return NGX_CONF_ERROR;
|
|
|
719 }
|
|
0
|
720
|
|
|
721 ecf->connections = NGX_CONF_UNSET_UINT;
|
|
|
722 ecf->use = NGX_CONF_UNSET_UINT;
|
|
|
723 ecf->multi_accept = NGX_CONF_UNSET;
|
|
|
724 ecf->accept_mutex = NGX_CONF_UNSET;
|
|
|
725 ecf->accept_mutex_delay = NGX_CONF_UNSET_MSEC;
|
|
|
726 ecf->name = (void *) NGX_CONF_UNSET;
|
|
|
727
|
|
|
728 #if (NGX_DEBUG)
|
|
50
|
729
|
|
|
730 if (ngx_array_init(&ecf->debug_connection, cycle->pool, 4,
|
|
|
731 sizeof(in_addr_t)) == NGX_ERROR)
|
|
|
732 {
|
|
|
733 return NGX_CONF_ERROR;
|
|
|
734 }
|
|
|
735
|
|
0
|
736 #endif
|
|
|
737
|
|
|
738 return ecf;
|
|
|
739 }
|
|
|
740
|
|
|
741
|
|
|
742 static char *ngx_event_init_conf(ngx_cycle_t *cycle, void *conf)
|
|
|
743 {
|
|
|
744 ngx_event_conf_t *ecf = conf;
|
|
16
|
745
|
|
50
|
746 #if (NGX_HAVE_EPOLL) && !(NGX_TEST_BUILD_EPOLL)
|
|
|
747 int fd;
|
|
|
748 #endif
|
|
|
749 #if (NGX_HAVE_RTSIG)
|
|
|
750 ngx_uint_t rtsig;
|
|
|
751 #endif
|
|
16
|
752 ngx_int_t i, connections;
|
|
|
753 ngx_module_t *module;
|
|
|
754 ngx_core_conf_t *ccf;
|
|
|
755 ngx_event_module_t *event_module;
|
|
|
756
|
|
|
757 connections = NGX_CONF_UNSET_UINT;
|
|
|
758 module = NULL;
|
|
|
759
|
|
18
|
760 #if (NGX_HAVE_EPOLL) && !(NGX_TEST_BUILD_EPOLL)
|
|
16
|
761
|
|
|
762 fd = epoll_create(100);
|
|
|
763
|
|
|
764 if (fd != -1) {
|
|
|
765 close(fd);
|
|
|
766 connections = DEFAULT_CONNECTIONS;
|
|
|
767 module = &ngx_epoll_module;
|
|
|
768
|
|
|
769 } else if (ngx_errno != NGX_ENOSYS) {
|
|
|
770 connections = DEFAULT_CONNECTIONS;
|
|
|
771 module = &ngx_epoll_module;
|
|
|
772 }
|
|
|
773
|
|
|
774 #endif
|
|
|
775
|
|
18
|
776 #if (NGX_HAVE_RTSIG)
|
|
16
|
777
|
|
|
778 if (module == NULL) {
|
|
|
779 connections = DEFAULT_CONNECTIONS;
|
|
|
780 module = &ngx_rtsig_module;
|
|
|
781 rtsig = 1;
|
|
50
|
782
|
|
|
783 } else {
|
|
|
784 rtsig = 0;
|
|
16
|
785 }
|
|
|
786
|
|
|
787 #endif
|
|
|
788
|
|
18
|
789 #if (NGX_HAVE_DEVPOLL)
|
|
16
|
790
|
|
|
791 connections = DEFAULT_CONNECTIONS;
|
|
|
792 module = &ngx_devpoll_module;
|
|
|
793
|
|
0
|
794 #endif
|
|
|
795
|
|
18
|
796 #if (NGX_HAVE_KQUEUE)
|
|
0
|
797
|
|
16
|
798 connections = DEFAULT_CONNECTIONS;
|
|
|
799 module = &ngx_kqueue_module;
|
|
0
|
800
|
|
16
|
801 #endif
|
|
0
|
802
|
|
18
|
803 #if (NGX_HAVE_SELECT)
|
|
0
|
804
|
|
16
|
805 if (module == NULL) {
|
|
0
|
806
|
|
50
|
807 #if (NGX_WIN32 || FD_SETSIZE >= DEFAULT_CONNECTIONS)
|
|
16
|
808 connections = DEFAULT_CONNECTIONS;
|
|
0
|
809 #else
|
|
50
|
810 connections = FD_SETSIZE;
|
|
16
|
811 #endif
|
|
|
812 module = &ngx_select_module;
|
|
|
813 }
|
|
|
814
|
|
0
|
815 #endif
|
|
|
816
|
|
16
|
817 if (module == NULL) {
|
|
|
818 for (i = 0; ngx_modules[i]; i++) {
|
|
|
819 if (ngx_modules[i]->type == NGX_EVENT_MODULE) {
|
|
|
820 event_module = ngx_modules[i]->ctx;
|
|
0
|
821
|
|
16
|
822 if (ngx_strcmp(event_module->name->data, event_core_name.data)
|
|
|
823 == 0)
|
|
|
824 {
|
|
|
825 continue;
|
|
|
826 }
|
|
0
|
827
|
|
16
|
828 module = ngx_modules[i];
|
|
|
829 break;
|
|
0
|
830 }
|
|
|
831 }
|
|
|
832 }
|
|
|
833
|
|
16
|
834 if (module == NULL) {
|
|
0
|
835 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0, "no events module found");
|
|
|
836 return NGX_CONF_ERROR;
|
|
|
837 }
|
|
|
838
|
|
16
|
839 ngx_conf_init_unsigned_value(ecf->connections, connections);
|
|
|
840 cycle->connection_n = ecf->connections;
|
|
0
|
841
|
|
16
|
842 ngx_conf_init_unsigned_value(ecf->use, module->ctx_index);
|
|
0
|
843
|
|
16
|
844 event_module = module->ctx;
|
|
|
845 ngx_conf_init_ptr_value(ecf->name, event_module->name->data);
|
|
0
|
846
|
|
|
847 ngx_conf_init_value(ecf->multi_accept, 0);
|
|
|
848 ngx_conf_init_value(ecf->accept_mutex, 1);
|
|
|
849 ngx_conf_init_msec_value(ecf->accept_mutex_delay, 500);
|
|
|
850
|
|
16
|
851
|
|
50
|
852 #if (NGX_HAVE_RTSIG)
|
|
|
853
|
|
|
854 if (!rtsig) {
|
|
|
855 return NGX_CONF_OK;
|
|
|
856 }
|
|
|
857
|
|
|
858 #endif
|
|
|
859
|
|
|
860 if (ecf->accept_mutex) {
|
|
16
|
861 return NGX_CONF_OK;
|
|
0
|
862 }
|
|
16
|
863
|
|
|
864 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
|
|
0
|
865
|
|
16
|
866 if (ccf->worker_processes == 0) {
|
|
|
867 return NGX_CONF_OK;
|
|
|
868 }
|
|
|
869
|
|
|
870 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
|
|
|
871 "the \"rtsig\" method requires \"accept_mutex\" to be on");
|
|
|
872
|
|
|
873 return NGX_CONF_ERROR;
|
|
0
|
874 }
|
|
|
875
|
|
|
876
|
|
|
877 static char *ngx_accept_mutex_check(ngx_conf_t *cf, void *post, void *data)
|
|
|
878 {
|
|
|
879 #if !(NGX_HAVE_ATOMIC_OPS)
|
|
|
880
|
|
|
881 ngx_flag_t *fp = data;
|
|
|
882
|
|
|
883 *fp = 0;
|
|
|
884
|
|
|
885 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
52
|
886 "\"accept_mutex\" is not supported on this platform, "
|
|
|
887 "ignored");
|
|
0
|
888
|
|
|
889 #endif
|
|
|
890
|
|
|
891 return NGX_CONF_OK;
|
|
|
892 }
|
