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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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222 if (!(shared = ngx_create_shared_memory(size, cycle->log))) {
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223 return NGX_ERROR;
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224 }
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225
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226 ngx_accept_mutex_ptr = (ngx_atomic_t *) shared;
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227 ngx_connection_counter = (ngx_atomic_t *) (shared + 128);
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228
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229 #if (NGX_STAT_STUB)
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230
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231 ngx_stat_accepted = (ngx_atomic_t *) (shared + 2 * 128);
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44
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232 ngx_stat_handled = (ngx_atomic_t *) (shared + 3 * 128);
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233 ngx_stat_requests = (ngx_atomic_t *) (shared + 4 * 128);
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234 ngx_stat_active = (ngx_atomic_t *) (shared + 5 * 128);
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235 ngx_stat_reading = (ngx_atomic_t *) (shared + 6 * 128);
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236 ngx_stat_writing = (ngx_atomic_t *) (shared + 7 * 128);
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0
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237
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238 #endif
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239
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240 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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10
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241 "counter: %p, %d",
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0
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242 ngx_connection_counter, *ngx_connection_counter);
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243
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244 #endif
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245
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246 return NGX_OK;
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247 }
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248
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249
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250 static ngx_int_t ngx_event_process_init(ngx_cycle_t *cycle)
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251 {
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252 ngx_uint_t m, i;
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253 ngx_socket_t fd;
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254 ngx_event_t *rev, *wev;
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255 ngx_listening_t *s;
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256 ngx_connection_t *c;
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257 ngx_core_conf_t *ccf;
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258 ngx_event_conf_t *ecf;
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259 ngx_event_module_t *module;
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10
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260 #if (NGX_WIN32)
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0
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261 ngx_iocp_conf_t *iocpcf;
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262 #endif
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263
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264 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
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265 ecf = ngx_event_get_conf(cycle->conf_ctx, ngx_event_core_module);
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266
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267 if (ngx_accept_mutex_ptr && ccf->worker_processes > 1 && ecf->accept_mutex)
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268 {
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269 ngx_accept_mutex = ngx_accept_mutex_ptr;
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270 ngx_accept_mutex_held = 0;
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271 ngx_accept_mutex_delay = ecf->accept_mutex_delay;
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272 }
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273
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274 #if (NGX_THREADS)
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275 if (!(ngx_posted_events_mutex = ngx_mutex_init(cycle->log, 0))) {
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276 return NGX_ERROR;
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277 }
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278 #endif
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279
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280 if (ngx_event_timer_init(cycle->log) == NGX_ERROR) {
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281 return NGX_ERROR;
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282 }
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283
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284 cycle->connection_n = ecf->connections;
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285
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286 for (m = 0; ngx_modules[m]; m++) {
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287 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
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288 continue;
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289 }
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290
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291 if (ngx_modules[m]->ctx_index == ecf->use) {
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292 module = ngx_modules[m]->ctx;
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293 if (module->actions.init(cycle) == NGX_ERROR) {
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294 /* fatal */
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295 exit(2);
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296 }
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297 break;
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298 }
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299 }
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300
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301 cycle->connections = ngx_alloc(sizeof(ngx_connection_t) * ecf->connections,
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302 cycle->log);
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303 if (cycle->connections == NULL) {
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304 return NGX_ERROR;
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305 }
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306
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307 c = cycle->connections;
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308 for (i = 0; i < cycle->connection_n; i++) {
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309 c[i].fd = (ngx_socket_t) -1;
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310 c[i].data = NULL;
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311 #if (NGX_THREADS)
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312 c[i].lock = 0;
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313 #endif
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314 }
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315
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316 cycle->read_events = ngx_alloc(sizeof(ngx_event_t) * ecf->connections,
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317 cycle->log);
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318 if (cycle->read_events == NULL) {
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319 return NGX_ERROR;
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320 }
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321
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322 rev = cycle->read_events;
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323 for (i = 0; i < cycle->connection_n; i++) {
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324 rev[i].closed = 1;
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30
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325 rev[i].instance = 1;
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0
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326 #if (NGX_THREADS)
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327 rev[i].lock = &c[i].lock;
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328 rev[i].own_lock = &c[i].lock;
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329 #endif
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330 }
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331
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332 cycle->write_events = ngx_alloc(sizeof(ngx_event_t) * ecf->connections,
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30
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333 cycle->log);
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0
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334 if (cycle->write_events == NULL) {
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335 return NGX_ERROR;
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336 }
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337
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338 wev = cycle->write_events;
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339 for (i = 0; i < cycle->connection_n; i++) {
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340 wev[i].closed = 1;
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341 #if (NGX_THREADS)
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342 wev[i].lock = &c[i].lock;
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343 wev[i].own_lock = &c[i].lock;
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344 #endif
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345 }
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346
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347 /* for each listening socket */
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348
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349 s = cycle->listening.elts;
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350 for (i = 0; i < cycle->listening.nelts; i++) {
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351
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352 fd = s[i].fd;
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353
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10
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354 #if (NGX_WIN32)
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0
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355 /*
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356 * Winsock assignes a socket number divisible by 4
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357 * so to find a connection we divide a socket number by 4.
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358 */
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359
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360 fd /= 4;
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361 #endif
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362
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363 c = &cycle->connections[fd];
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364 rev = &cycle->read_events[fd];
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365 wev = &cycle->write_events[fd];
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366
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367 ngx_memzero(c, sizeof(ngx_connection_t));
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368 ngx_memzero(rev, sizeof(ngx_event_t));
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30
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369 ngx_memzero(wev, sizeof(ngx_event_t));
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0
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370
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371 c->fd = s[i].fd;
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372 c->listening = &s[i];
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373
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374 c->ctx = s[i].ctx;
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375 c->servers = s[i].servers;
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376 c->log = s[i].log;
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377 c->read = rev;
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378
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379 /* required by iocp in "c->write->active = 1" */
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380 c->write = wev;
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381
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382 /* required by poll */
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383 wev->index = NGX_INVALID_INDEX;
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384
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385 rev->log = c->log;
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386 rev->data = c;
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387 rev->index = NGX_INVALID_INDEX;
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388
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389 rev->available = 0;
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390
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391 rev->accept = 1;
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392
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18
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393 #if (NGX_HAVE_DEFERRED_ACCEPT)
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0
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394 rev->deferred_accept = s[i].deferred_accept;
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395 #endif
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396
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397 if (!(ngx_event_flags & NGX_USE_IOCP_EVENT)) {
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|
398 if (s[i].remain) {
|
|
|
399
|
|
|
400 /*
|
|
|
401 * delete the old accept events that were bound to
|
|
|
402 * the old cycle read events array
|
|
|
403 */
|
|
|
404
|
|
|
405 if (ngx_del_event(&cycle->old_cycle->read_events[fd],
|
|
|
406 NGX_READ_EVENT, NGX_CLOSE_EVENT) == NGX_ERROR)
|
|
|
407 {
|
|
|
408 return NGX_ERROR;
|
|
|
409 }
|
|
|
410
|
|
|
411 cycle->old_cycle->connections[fd].fd = (ngx_socket_t) -1;
|
|
|
412 }
|
|
|
413 }
|
|
|
414
|
|
10
|
415 #if (NGX_WIN32)
|
|
0
|
416
|
|
|
417 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
|
|
10
|
418 rev->event_handler = ngx_event_acceptex;
|
|
0
|
419
|
|
|
420 if (ngx_add_event(rev, 0, NGX_IOCP_ACCEPT) == NGX_ERROR) {
|
|
|
421 return NGX_ERROR;
|
|
|
422 }
|
|
|
423
|
|
|
424 iocpcf = ngx_event_get_conf(cycle->conf_ctx, ngx_iocp_module);
|
|
|
425 if (ngx_event_post_acceptex(&s[i], iocpcf->post_acceptex)
|
|
|
426 == NGX_ERROR)
|
|
|
427 {
|
|
|
428 return NGX_ERROR;
|
|
|
429 }
|
|
|
430
|
|
|
431 } else {
|
|
10
|
432 rev->event_handler = ngx_event_accept;
|
|
|
433
|
|
0
|
434 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
435 return NGX_ERROR;
|
|
|
436 }
|
|
|
437 }
|
|
|
438
|
|
|
439 #else
|
|
|
440
|
|
10
|
441 rev->event_handler = ngx_event_accept;
|
|
0
|
442
|
|
|
443 if (ngx_accept_mutex) {
|
|
|
444 continue;
|
|
|
445 }
|
|
|
446
|
|
|
447 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
|
|
|
448 if (ngx_add_conn(c) == NGX_ERROR) {
|
|
|
449 return NGX_ERROR;
|
|
|
450 }
|
|
|
451
|
|
|
452 } else {
|
|
|
453 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
454 return NGX_ERROR;
|
|
|
455 }
|
|
|
456 }
|
|
|
457
|
|
|
458 #endif
|
|
|
459 }
|
|
|
460
|
|
|
461 return NGX_OK;
|
|
|
462 }
|
|
|
463
|
|
|
464
|
|
2
|
465 ngx_int_t ngx_send_lowat(ngx_connection_t *c, size_t lowat)
|
|
|
466 {
|
|
|
467 int sndlowat;
|
|
|
468
|
|
4
|
469 #if (NGX_HAVE_LOWAT_EVENT)
|
|
2
|
470
|
|
4
|
471 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
2
|
472 c->write->available = lowat;
|
|
|
473 return NGX_OK;
|
|
|
474 }
|
|
|
475
|
|
|
476 #endif
|
|
|
477
|
|
|
478 if (lowat == 0 || c->sndlowat) {
|
|
|
479 return NGX_OK;
|
|
|
480 }
|
|
|
481
|
|
|
482 sndlowat = (int) lowat;
|
|
|
483
|
|
|
484 if (setsockopt(c->fd, SOL_SOCKET, SO_SNDLOWAT,
|
|
|
485 (const void *) &sndlowat, sizeof(int)) == -1)
|
|
|
486 {
|
|
|
487 ngx_connection_error(c, ngx_socket_errno,
|
|
|
488 "setsockopt(SO_SNDLOWAT) failed");
|
|
|
489 return NGX_ERROR;
|
|
|
490 }
|
|
|
491
|
|
|
492 c->sndlowat = 1;
|
|
|
493
|
|
|
494 return NGX_OK;
|
|
|
495 }
|
|
|
496
|
|
|
497
|
|
0
|
498 static char *ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
499 {
|
|
|
500 int m;
|
|
|
501 char *rv;
|
|
|
502 void ***ctx;
|
|
|
503 ngx_conf_t pcf;
|
|
|
504 ngx_event_module_t *module;
|
|
|
505
|
|
|
506 /* count the number of the event modules and set up their indices */
|
|
|
507
|
|
|
508 ngx_event_max_module = 0;
|
|
|
509 for (m = 0; ngx_modules[m]; m++) {
|
|
|
510 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
511 continue;
|
|
|
512 }
|
|
|
513
|
|
|
514 ngx_modules[m]->ctx_index = ngx_event_max_module++;
|
|
|
515 }
|
|
|
516
|
|
|
517 ngx_test_null(ctx, ngx_pcalloc(cf->pool, sizeof(void *)), NGX_CONF_ERROR);
|
|
|
518
|
|
|
519 ngx_test_null(*ctx,
|
|
|
520 ngx_pcalloc(cf->pool, ngx_event_max_module * sizeof(void *)),
|
|
|
521 NGX_CONF_ERROR);
|
|
|
522
|
|
|
523 *(void **) conf = ctx;
|
|
|
524
|
|
|
525 for (m = 0; ngx_modules[m]; m++) {
|
|
|
526 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
527 continue;
|
|
|
528 }
|
|
|
529
|
|
|
530 module = ngx_modules[m]->ctx;
|
|
|
531
|
|
|
532 if (module->create_conf) {
|
|
|
533 ngx_test_null((*ctx)[ngx_modules[m]->ctx_index],
|
|
|
534 module->create_conf(cf->cycle),
|
|
|
535 NGX_CONF_ERROR);
|
|
|
536 }
|
|
|
537 }
|
|
|
538
|
|
|
539 pcf = *cf;
|
|
|
540 cf->ctx = ctx;
|
|
|
541 cf->module_type = NGX_EVENT_MODULE;
|
|
|
542 cf->cmd_type = NGX_EVENT_CONF;
|
|
|
543 rv = ngx_conf_parse(cf, NULL);
|
|
|
544 *cf = pcf;
|
|
|
545
|
|
|
546 if (rv != NGX_CONF_OK)
|
|
|
547 return rv;
|
|
|
548
|
|
|
549 for (m = 0; ngx_modules[m]; m++) {
|
|
|
550 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
551 continue;
|
|
|
552 }
|
|
|
553
|
|
|
554 module = ngx_modules[m]->ctx;
|
|
|
555
|
|
|
556 if (module->init_conf) {
|
|
|
557 rv = module->init_conf(cf->cycle,
|
|
|
558 (*ctx)[ngx_modules[m]->ctx_index]);
|
|
|
559 if (rv != NGX_CONF_OK) {
|
|
|
560 return rv;
|
|
|
561 }
|
|
|
562 }
|
|
|
563 }
|
|
|
564
|
|
|
565 return NGX_CONF_OK;
|
|
|
566 }
|
|
|
567
|
|
|
568
|
|
|
569 static char *ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
570 void *conf)
|
|
|
571 {
|
|
|
572 ngx_event_conf_t *ecf = conf;
|
|
|
573
|
|
|
574 ngx_str_t *value;
|
|
|
575
|
|
|
576 if (ecf->connections != NGX_CONF_UNSET_UINT) {
|
|
|
577 return "is duplicate" ;
|
|
|
578 }
|
|
|
579
|
|
|
580 value = cf->args->elts;
|
|
|
581 ecf->connections = ngx_atoi(value[1].data, value[1].len);
|
|
|
582 if (ecf->connections == (ngx_uint_t) NGX_ERROR) {
|
|
|
583 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
584 "invalid number \"%V\"", &value[1]);
|
|
0
|
585
|
|
|
586 return NGX_CONF_ERROR;
|
|
|
587 }
|
|
|
588
|
|
|
589 cf->cycle->connection_n = ecf->connections;
|
|
|
590
|
|
|
591 return NGX_CONF_OK;
|
|
|
592 }
|
|
|
593
|
|
|
594
|
|
|
595 static char *ngx_event_use(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
596 {
|
|
|
597 ngx_event_conf_t *ecf = conf;
|
|
|
598
|
|
|
599 ngx_int_t m;
|
|
|
600 ngx_str_t *value;
|
|
|
601 ngx_event_conf_t *old_ecf;
|
|
|
602 ngx_event_module_t *module;
|
|
|
603
|
|
|
604 if (ecf->use != NGX_CONF_UNSET_UINT) {
|
|
|
605 return "is duplicate" ;
|
|
|
606 }
|
|
|
607
|
|
|
608 value = cf->args->elts;
|
|
|
609
|
|
|
610 if (cf->cycle->old_cycle->conf_ctx) {
|
|
|
611 old_ecf = ngx_event_get_conf(cf->cycle->old_cycle->conf_ctx,
|
|
|
612 ngx_event_core_module);
|
|
|
613 } else {
|
|
|
614 old_ecf = NULL;
|
|
|
615 }
|
|
|
616
|
|
|
617
|
|
|
618 for (m = 0; ngx_modules[m]; m++) {
|
|
|
619 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
620 continue;
|
|
|
621 }
|
|
|
622
|
|
|
623 module = ngx_modules[m]->ctx;
|
|
|
624 if (module->name->len == value[1].len) {
|
|
|
625 if (ngx_strcmp(module->name->data, value[1].data) == 0) {
|
|
|
626 ecf->use = ngx_modules[m]->ctx_index;
|
|
|
627 ecf->name = module->name->data;
|
|
|
628
|
|
|
629 if (ngx_process == NGX_PROCESS_SINGLE
|
|
|
630 && old_ecf
|
|
|
631 && old_ecf->use != ecf->use)
|
|
|
632 {
|
|
|
633 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
16
|
634 "when the server runs without a master process "
|
|
|
635 "the \"%V\" event type must be the same as "
|
|
|
636 "in previous configuration - \"%s\" "
|
|
|
637 "and it can not be changed on the fly, "
|
|
|
638 "to change it you need to stop server "
|
|
|
639 "and start it again",
|
|
|
640 &value[1], old_ecf->name);
|
|
0
|
641
|
|
|
642 return NGX_CONF_ERROR;
|
|
|
643 }
|
|
|
644
|
|
|
645 return NGX_CONF_OK;
|
|
|
646 }
|
|
|
647 }
|
|
|
648 }
|
|
|
649
|
|
|
650 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
651 "invalid event type \"%V\"", &value[1]);
|
|
0
|
652
|
|
|
653 return NGX_CONF_ERROR;
|
|
|
654 }
|
|
|
655
|
|
|
656
|
|
|
657 static char *ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
658 void *conf)
|
|
|
659 {
|
|
|
660 #if (NGX_DEBUG)
|
|
|
661 ngx_event_conf_t *ecf = conf;
|
|
|
662
|
|
|
663 in_addr_t *addr;
|
|
|
664 ngx_str_t *value;
|
|
|
665 struct hostent *h;
|
|
|
666
|
|
|
667 value = cf->args->elts;
|
|
|
668
|
|
|
669 /* AF_INET only */
|
|
|
670
|
|
|
671 if (!(addr = ngx_push_array(&ecf->debug_connection))) {
|
|
|
672 return NGX_CONF_ERROR;
|
|
|
673 }
|
|
|
674
|
|
|
675 *addr = inet_addr((char *) value[1].data);
|
|
|
676
|
|
|
677 if (*addr != INADDR_NONE) {
|
|
|
678 return NGX_OK;
|
|
|
679 }
|
|
|
680
|
|
|
681 h = gethostbyname((char *) value[1].data);
|
|
|
682
|
|
|
683 if (h == NULL || h->h_addr_list[0] == NULL) {
|
|
|
684 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
685 "host \"%s\" not found", value[1].data);
|
|
0
|
686 return NGX_CONF_ERROR;
|
|
|
687 }
|
|
|
688
|
|
|
689 *addr = *(in_addr_t *)(h->h_addr_list[0]);
|
|
|
690
|
|
|
691 #else
|
|
|
692
|
|
|
693 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
694 "\"debug_connection\" is ignored, you need to rebuild "
|
|
|
695 "nginx using --with-debug option to enable it");
|
|
|
696
|
|
|
697 #endif
|
|
|
698
|
|
|
699 return NGX_OK;
|
|
|
700 }
|
|
|
701
|
|
|
702
|
|
|
703 static void *ngx_event_create_conf(ngx_cycle_t *cycle)
|
|
|
704 {
|
|
|
705 ngx_event_conf_t *ecf;
|
|
|
706
|
|
|
707 ngx_test_null(ecf, ngx_palloc(cycle->pool, sizeof(ngx_event_conf_t)),
|
|
|
708 NGX_CONF_ERROR);
|
|
|
709
|
|
|
710 ecf->connections = NGX_CONF_UNSET_UINT;
|
|
|
711 ecf->use = NGX_CONF_UNSET_UINT;
|
|
|
712 ecf->multi_accept = NGX_CONF_UNSET;
|
|
|
713 ecf->accept_mutex = NGX_CONF_UNSET;
|
|
|
714 ecf->accept_mutex_delay = NGX_CONF_UNSET_MSEC;
|
|
|
715 ecf->name = (void *) NGX_CONF_UNSET;
|
|
|
716
|
|
|
717 #if (NGX_DEBUG)
|
|
48
|
718 ngx_init_array(ecf->debug_connection, cycle->pool, 4, sizeof(in_addr_t),
|
|
0
|
719 NGX_CONF_ERROR);
|
|
|
720 #endif
|
|
|
721
|
|
|
722 return ecf;
|
|
|
723 }
|
|
|
724
|
|
|
725
|
|
|
726 static char *ngx_event_init_conf(ngx_cycle_t *cycle, void *conf)
|
|
|
727 {
|
|
|
728 ngx_event_conf_t *ecf = conf;
|
|
16
|
729
|
|
|
730 int fd, rtsig;
|
|
|
731 ngx_int_t i, connections;
|
|
|
732 ngx_module_t *module;
|
|
|
733 ngx_core_conf_t *ccf;
|
|
|
734 ngx_event_module_t *event_module;
|
|
|
735
|
|
|
736 connections = NGX_CONF_UNSET_UINT;
|
|
|
737 module = NULL;
|
|
|
738 rtsig = 0;
|
|
|
739 fd = 0;
|
|
|
740
|
|
18
|
741 #if (NGX_HAVE_EPOLL) && !(NGX_TEST_BUILD_EPOLL)
|
|
16
|
742
|
|
|
743 fd = epoll_create(100);
|
|
|
744
|
|
|
745 if (fd != -1) {
|
|
|
746 close(fd);
|
|
|
747 connections = DEFAULT_CONNECTIONS;
|
|
|
748 module = &ngx_epoll_module;
|
|
|
749
|
|
|
750 } else if (ngx_errno != NGX_ENOSYS) {
|
|
|
751 connections = DEFAULT_CONNECTIONS;
|
|
|
752 module = &ngx_epoll_module;
|
|
|
753 }
|
|
|
754
|
|
|
755 #endif
|
|
|
756
|
|
18
|
757 #if (NGX_HAVE_RTSIG)
|
|
16
|
758
|
|
|
759 if (module == NULL) {
|
|
|
760 connections = DEFAULT_CONNECTIONS;
|
|
|
761 module = &ngx_rtsig_module;
|
|
|
762 rtsig = 1;
|
|
|
763 }
|
|
|
764
|
|
|
765 #endif
|
|
|
766
|
|
18
|
767 #if (NGX_HAVE_DEVPOLL)
|
|
16
|
768
|
|
|
769 connections = DEFAULT_CONNECTIONS;
|
|
|
770 module = &ngx_devpoll_module;
|
|
|
771
|
|
0
|
772 #endif
|
|
|
773
|
|
18
|
774 #if (NGX_HAVE_KQUEUE)
|
|
0
|
775
|
|
16
|
776 connections = DEFAULT_CONNECTIONS;
|
|
|
777 module = &ngx_kqueue_module;
|
|
0
|
778
|
|
16
|
779 #endif
|
|
0
|
780
|
|
18
|
781 #if (NGX_HAVE_SELECT)
|
|
0
|
782
|
|
16
|
783 if (module == NULL) {
|
|
0
|
784
|
|
10
|
785 #if (NGX_WIN32)
|
|
16
|
786 connections = DEFAULT_CONNECTIONS;
|
|
0
|
787 #else
|
|
16
|
788 connections = FD_SETSIZE < DEFAULT_CONNECTIONS ? FD_SETSIZE:
|
|
|
789 DEFAULT_CONNECTIONS;
|
|
|
790 #endif
|
|
|
791 module = &ngx_select_module;
|
|
|
792 }
|
|
|
793
|
|
0
|
794 #endif
|
|
|
795
|
|
16
|
796 if (module == NULL) {
|
|
|
797 for (i = 0; ngx_modules[i]; i++) {
|
|
|
798 if (ngx_modules[i]->type == NGX_EVENT_MODULE) {
|
|
|
799 event_module = ngx_modules[i]->ctx;
|
|
0
|
800
|
|
16
|
801 if (ngx_strcmp(event_module->name->data, event_core_name.data)
|
|
|
802 == 0)
|
|
|
803 {
|
|
|
804 continue;
|
|
|
805 }
|
|
0
|
806
|
|
16
|
807 module = ngx_modules[i];
|
|
|
808 break;
|
|
0
|
809 }
|
|
|
810 }
|
|
|
811 }
|
|
|
812
|
|
16
|
813 if (module == NULL) {
|
|
0
|
814 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0, "no events module found");
|
|
|
815 return NGX_CONF_ERROR;
|
|
|
816 }
|
|
|
817
|
|
16
|
818 ngx_conf_init_unsigned_value(ecf->connections, connections);
|
|
|
819 cycle->connection_n = ecf->connections;
|
|
0
|
820
|
|
16
|
821 ngx_conf_init_unsigned_value(ecf->use, module->ctx_index);
|
|
0
|
822
|
|
16
|
823 event_module = module->ctx;
|
|
|
824 ngx_conf_init_ptr_value(ecf->name, event_module->name->data);
|
|
0
|
825
|
|
|
826 ngx_conf_init_value(ecf->multi_accept, 0);
|
|
|
827 ngx_conf_init_value(ecf->accept_mutex, 1);
|
|
|
828 ngx_conf_init_msec_value(ecf->accept_mutex_delay, 500);
|
|
|
829
|
|
16
|
830
|
|
|
831 if (!rtsig || ecf->accept_mutex) {
|
|
|
832 return NGX_CONF_OK;
|
|
0
|
833 }
|
|
16
|
834
|
|
|
835 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
|
|
0
|
836
|
|
16
|
837 if (ccf->worker_processes == 0) {
|
|
|
838 return NGX_CONF_OK;
|
|
|
839 }
|
|
|
840
|
|
|
841 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
|
|
|
842 "the \"rtsig\" method requires \"accept_mutex\" to be on");
|
|
|
843
|
|
|
844 return NGX_CONF_ERROR;
|
|
0
|
845 }
|
|
|
846
|
|
|
847
|
|
|
848 static char *ngx_accept_mutex_check(ngx_conf_t *cf, void *post, void *data)
|
|
|
849 {
|
|
|
850 #if !(NGX_HAVE_ATOMIC_OPS)
|
|
|
851
|
|
|
852 ngx_flag_t *fp = data;
|
|
|
853
|
|
|
854 *fp = 0;
|
|
|
855
|
|
|
856 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
857 "\"accept_mutex\" is not supported, ignored");
|
|
|
858
|
|
|
859 #endif
|
|
|
860
|
|
|
861 return NGX_CONF_OK;
|
|
|
862 }
|
