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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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236
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16 extern ngx_module_t ngx_eventport_module;
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16
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17 extern ngx_module_t ngx_devpoll_module;
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18 extern ngx_module_t ngx_epoll_module;
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19 extern ngx_module_t ngx_rtsig_module;
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0
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20 extern ngx_module_t ngx_select_module;
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21
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22
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23 static ngx_int_t ngx_event_module_init(ngx_cycle_t *cycle);
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24 static ngx_int_t ngx_event_process_init(ngx_cycle_t *cycle);
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25 static char *ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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26
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27 static char *ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd,
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58
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28 void *conf);
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0
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29 static char *ngx_event_use(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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30 static char *ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd,
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58
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31 void *conf);
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0
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32
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33 static void *ngx_event_create_conf(ngx_cycle_t *cycle);
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34 static char *ngx_event_init_conf(ngx_cycle_t *cycle, void *conf);
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35
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36
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112
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37 static ngx_uint_t ngx_timer_resolution;
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38 sig_atomic_t ngx_event_timer_alarm;
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39
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44
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40 static ngx_uint_t ngx_event_max_module;
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0
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41
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44
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42 ngx_uint_t ngx_event_flags;
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43 ngx_event_actions_t ngx_event_actions;
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0
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44
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45
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516
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46 static ngx_atomic_t connection_counter = 1;
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42
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47 ngx_atomic_t *ngx_connection_counter = &connection_counter;
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0
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48
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49
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42
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50 ngx_atomic_t *ngx_accept_mutex_ptr;
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160
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51 ngx_shmtx_t ngx_accept_mutex;
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52 ngx_uint_t ngx_use_accept_mutex;
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236
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53 ngx_uint_t ngx_accept_events;
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44
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54 ngx_uint_t ngx_accept_mutex_held;
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55 ngx_msec_t ngx_accept_mutex_delay;
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56 ngx_int_t ngx_accept_disabled;
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110
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57 ngx_file_t ngx_accept_mutex_lock_file;
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0
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58
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59
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60 #if (NGX_STAT_STUB)
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61
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62 ngx_atomic_t ngx_stat_accepted0;
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63 ngx_atomic_t *ngx_stat_accepted = &ngx_stat_accepted0;
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44
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64 ngx_atomic_t ngx_stat_handled0;
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65 ngx_atomic_t *ngx_stat_handled = &ngx_stat_handled0;
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0
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66 ngx_atomic_t ngx_stat_requests0;
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67 ngx_atomic_t *ngx_stat_requests = &ngx_stat_requests0;
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68 ngx_atomic_t ngx_stat_active0;
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69 ngx_atomic_t *ngx_stat_active = &ngx_stat_active0;
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70 ngx_atomic_t ngx_stat_reading0;
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71 ngx_atomic_t *ngx_stat_reading = &ngx_stat_reading0;
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72 ngx_atomic_t ngx_stat_writing0;
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44
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73 ngx_atomic_t *ngx_stat_writing = &ngx_stat_writing0;
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0
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74
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75 #endif
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76
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77
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78
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79 static ngx_command_t ngx_events_commands[] = {
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80
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81 { ngx_string("events"),
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82 NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
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83 ngx_events_block,
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84 0,
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85 0,
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86 NULL },
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87
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88 ngx_null_command
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89 };
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90
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126
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91
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0
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92 static ngx_core_module_t ngx_events_module_ctx = {
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93 ngx_string("events"),
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94 NULL,
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95 NULL
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126
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96 };
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0
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97
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98
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99 ngx_module_t ngx_events_module = {
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58
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100 NGX_MODULE_V1,
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0
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101 &ngx_events_module_ctx, /* module context */
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102 ngx_events_commands, /* module directives */
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103 NGX_CORE_MODULE, /* module type */
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90
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104 NULL, /* init master */
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0
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105 NULL, /* init module */
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90
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106 NULL, /* init process */
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107 NULL, /* init thread */
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108 NULL, /* exit thread */
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109 NULL, /* exit process */
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110 NULL, /* exit master */
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111 NGX_MODULE_V1_PADDING
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0
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112 };
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113
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114
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115 static ngx_str_t event_core_name = ngx_string("event_core");
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116
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117
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118 static ngx_command_t ngx_event_core_commands[] = {
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119
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92
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120 { ngx_string("worker_connections"),
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121 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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122 ngx_event_connections,
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123 0,
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124 0,
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125 NULL },
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126
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0
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127 { ngx_string("connections"),
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128 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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129 ngx_event_connections,
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130 0,
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131 0,
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132 NULL },
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133
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134 { ngx_string("use"),
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135 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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136 ngx_event_use,
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137 0,
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138 0,
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139 NULL },
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140
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141 { ngx_string("multi_accept"),
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216
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142 NGX_EVENT_CONF|NGX_CONF_FLAG,
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0
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143 ngx_conf_set_flag_slot,
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144 0,
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145 offsetof(ngx_event_conf_t, multi_accept),
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146 NULL },
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147
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148 { ngx_string("accept_mutex"),
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216
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149 NGX_EVENT_CONF|NGX_CONF_FLAG,
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0
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150 ngx_conf_set_flag_slot,
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151 0,
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152 offsetof(ngx_event_conf_t, accept_mutex),
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160
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153 NULL },
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0
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154
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155 { ngx_string("accept_mutex_delay"),
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156 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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157 ngx_conf_set_msec_slot,
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158 0,
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159 offsetof(ngx_event_conf_t, accept_mutex_delay),
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160 NULL },
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161
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162 { ngx_string("debug_connection"),
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163 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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164 ngx_event_debug_connection,
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165 0,
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166 0,
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167 NULL },
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168
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169 ngx_null_command
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170 };
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171
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172
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173 ngx_event_module_t ngx_event_core_module_ctx = {
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174 &event_core_name,
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175 ngx_event_create_conf, /* create configuration */
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176 ngx_event_init_conf, /* init configuration */
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177
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178 { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }
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179 };
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180
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181
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182 ngx_module_t ngx_event_core_module = {
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58
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183 NGX_MODULE_V1,
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0
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184 &ngx_event_core_module_ctx, /* module context */
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185 ngx_event_core_commands, /* module directives */
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186 NGX_EVENT_MODULE, /* module type */
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90
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187 NULL, /* init master */
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0
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188 ngx_event_module_init, /* init module */
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90
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189 ngx_event_process_init, /* init process */
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190 NULL, /* init thread */
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191 NULL, /* exit thread */
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192 NULL, /* exit process */
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193 NULL, /* exit master */
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194 NGX_MODULE_V1_PADDING
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0
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195 };
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196
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197
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112
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198 void
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199 ngx_process_events_and_timers(ngx_cycle_t *cycle)
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200 {
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201 ngx_uint_t flags;
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116
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202 ngx_msec_t timer, delta;
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112
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203
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204 if (ngx_timer_resolution) {
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205 timer = NGX_TIMER_INFINITE;
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206 flags = 0;
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207
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208 } else {
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209 timer = ngx_event_find_timer();
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210 flags = NGX_UPDATE_TIME;
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211
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212 #if (NGX_THREADS)
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213
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214 if (timer == NGX_TIMER_INFINITE || timer > 500) {
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215 timer = 500;
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216 }
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217
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218 #endif
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219 }
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220
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160
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221 if (ngx_use_accept_mutex) {
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112
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222 if (ngx_accept_disabled > 0) {
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223 ngx_accept_disabled--;
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224
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225 } else {
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226 if (ngx_trylock_accept_mutex(cycle) == NGX_ERROR) {
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227 return;
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228 }
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229
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230 if (ngx_accept_mutex_held) {
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231 flags |= NGX_POST_EVENTS;
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232
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233 } else {
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234 if (timer == NGX_TIMER_INFINITE
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235 || timer > ngx_accept_mutex_delay)
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236 {
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237 timer = ngx_accept_mutex_delay;
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238 }
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239 }
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240 }
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241 }
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242
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116
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243 delta = ngx_current_msec;
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244
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112
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245 (void) ngx_process_events(cycle, timer, flags);
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246
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116
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247 delta = ngx_current_msec - delta;
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248
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249 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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250 "timer delta: %M", delta);
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251
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112
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252 if (ngx_posted_accept_events) {
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253 ngx_event_process_posted(cycle, &ngx_posted_accept_events);
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254 }
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255
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256 if (ngx_accept_mutex_held) {
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160
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257 ngx_shmtx_unlock(&ngx_accept_mutex);
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112
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258 }
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259
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122
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260 if (delta) {
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261 ngx_event_expire_timers();
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262 }
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263
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112
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264 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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265 "posted events %p", ngx_posted_events);
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266
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267 if (ngx_posted_events) {
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268 if (ngx_threaded) {
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269 ngx_wakeup_worker_thread(cycle);
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270
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271 } else {
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272 ngx_event_process_posted(cycle, &ngx_posted_events);
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273 }
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274 }
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275 }
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276
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277
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58
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278 ngx_int_t
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324
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279 ngx_handle_read_event(ngx_event_t *rev, ngx_uint_t flags)
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58
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280 {
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281 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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126
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282
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58
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283 /* kqueue, epoll */
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284
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285 if (!rev->active && !rev->ready) {
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286 if (ngx_add_event(rev, NGX_READ_EVENT, NGX_CLEAR_EVENT)
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287 == NGX_ERROR)
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288 {
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289 return NGX_ERROR;
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290 }
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291 }
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126
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292
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58
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293 return NGX_OK;
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294
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295 } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
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296
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297 /* select, poll, /dev/poll */
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298
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299 if (!rev->active && !rev->ready) {
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300 if (ngx_add_event(rev, NGX_READ_EVENT, NGX_LEVEL_EVENT)
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301 == NGX_ERROR)
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302 {
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303 return NGX_ERROR;
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304 }
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305
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306 return NGX_OK;
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307 }
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308
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309 if (rev->active && (rev->ready || (flags & NGX_CLOSE_EVENT))) {
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310 if (ngx_del_event(rev, NGX_READ_EVENT, NGX_LEVEL_EVENT | flags)
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311 == NGX_ERROR)
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312 {
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313 return NGX_ERROR;
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314 }
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315
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316 return NGX_OK;
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317 }
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318
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236
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319 } else if (ngx_event_flags & NGX_USE_EVENTPORT_EVENT) {
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58
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320
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321 /* event ports */
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322
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236
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323 if (!rev->active && !rev->ready) {
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324 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
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58
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325 return NGX_ERROR;
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326 }
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236
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327
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328 return NGX_OK;
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58
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329 }
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126
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330
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236
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331 if (rev->oneshot && !rev->ready) {
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332 if (ngx_del_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
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333 return NGX_ERROR;
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334 }
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335
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336 return NGX_OK;
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337 }
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58
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338 }
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339
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340 /* aio, iocp, rtsig */
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341
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342 return NGX_OK;
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343 }
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344
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345
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346 ngx_int_t
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347 ngx_handle_write_event(ngx_event_t *wev, size_t lowat)
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348 {
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349 ngx_connection_t *c;
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350
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351 if (lowat) {
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236
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352 c = wev->data;
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58
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353
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354 if (ngx_send_lowat(c, lowat) == NGX_ERROR) {
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355 return NGX_ERROR;
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356 }
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357 }
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358
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359 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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360
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361 /* kqueue, epoll */
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362
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363 if (!wev->active && !wev->ready) {
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364 if (ngx_add_event(wev, NGX_WRITE_EVENT,
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365 NGX_CLEAR_EVENT | (lowat ? NGX_LOWAT_EVENT : 0))
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366 == NGX_ERROR)
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367 {
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368 return NGX_ERROR;
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369 }
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370 }
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371
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372 return NGX_OK;
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373
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374 } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
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375
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376 /* select, poll, /dev/poll */
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377
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378 if (!wev->active && !wev->ready) {
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379 if (ngx_add_event(wev, NGX_WRITE_EVENT, NGX_LEVEL_EVENT)
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380 == NGX_ERROR)
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381 {
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382 return NGX_ERROR;
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383 }
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384
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385 return NGX_OK;
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386 }
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387
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388 if (wev->active && wev->ready) {
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389 if (ngx_del_event(wev, NGX_WRITE_EVENT, NGX_LEVEL_EVENT)
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390 == NGX_ERROR)
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391 {
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392 return NGX_ERROR;
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393 }
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394
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395 return NGX_OK;
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396 }
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397
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236
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398 } else if (ngx_event_flags & NGX_USE_EVENTPORT_EVENT) {
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58
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399
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400 /* event ports */
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401
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236
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402 if (!wev->active && !wev->ready) {
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403 if (ngx_add_event(wev, NGX_WRITE_EVENT, 0) == NGX_ERROR) {
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58
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404 return NGX_ERROR;
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405 }
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236
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406
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407 return NGX_OK;
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58
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408 }
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126
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409
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236
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410 if (wev->oneshot && wev->ready) {
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|
|
411 if (ngx_del_event(wev, NGX_WRITE_EVENT, 0) == NGX_ERROR) {
|
|
|
412 return NGX_ERROR;
|
|
|
413 }
|
|
|
414
|
|
|
415 return NGX_OK;
|
|
|
416 }
|
|
58
|
417 }
|
|
|
418
|
|
|
419 /* aio, iocp, rtsig */
|
|
|
420
|
|
|
421 return NGX_OK;
|
|
|
422 }
|
|
|
423
|
|
|
424
|
|
|
425 static ngx_int_t
|
|
|
426 ngx_event_module_init(ngx_cycle_t *cycle)
|
|
0
|
427 {
|
|
92
|
428 void ***cf;
|
|
154
|
429 u_char *shared;
|
|
160
|
430 size_t size, cl;
|
|
356
|
431 ngx_shm_t shm;
|
|
516
|
432 ngx_time_t *tp;
|
|
112
|
433 ngx_core_conf_t *ccf;
|
|
356
|
434 ngx_event_conf_t *ecf;
|
|
22
|
435
|
|
|
436 cf = ngx_get_conf(cycle->conf_ctx, ngx_events_module);
|
|
|
437
|
|
|
438 if (cf == NULL) {
|
|
|
439 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
|
|
|
440 "no \"events\" section in configuration");
|
|
|
441 return NGX_ERROR;
|
|
|
442 }
|
|
|
443
|
|
|
444 ecf = (*cf)[ngx_event_core_module.ctx_index];
|
|
|
445
|
|
480
|
446 if (!ngx_test_config && ngx_process <= NGX_PROCESS_MASTER) {
|
|
190
|
447 ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0,
|
|
|
448 "using the \"%s\" event method", ecf->name);
|
|
|
449 }
|
|
22
|
450
|
|
112
|
451 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
|
|
0
|
452
|
|
112
|
453 ngx_timer_resolution = ccf->timer_resolution;
|
|
|
454
|
|
|
455 #if !(NGX_WIN32)
|
|
356
|
456 {
|
|
|
457 ngx_int_t limit;
|
|
|
458 struct rlimit rlmt;
|
|
0
|
459
|
|
92
|
460 if (getrlimit(RLIMIT_NOFILE, &rlmt) == -1) {
|
|
|
461 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
462 "getrlimit(RLIMIT_NOFILE) failed, ignored");
|
|
|
463
|
|
|
464 } else {
|
|
|
465 if (ecf->connections > (ngx_uint_t) rlmt.rlim_cur
|
|
|
466 && (ccf->rlimit_nofile == NGX_CONF_UNSET
|
|
|
467 || ecf->connections > (ngx_uint_t) ccf->rlimit_nofile))
|
|
|
468 {
|
|
|
469 limit = (ccf->rlimit_nofile == NGX_CONF_UNSET) ?
|
|
|
470 (ngx_int_t) rlmt.rlim_cur : ccf->rlimit_nofile;
|
|
|
471
|
|
|
472 ngx_log_error(NGX_LOG_WARN, cycle->log, 0,
|
|
|
473 "%ui worker_connections are more than "
|
|
|
474 "open file resource limit: %i",
|
|
|
475 ecf->connections, limit);
|
|
|
476 }
|
|
|
477 }
|
|
356
|
478 }
|
|
154
|
479 #endif /* !(NGX_WIN32) */
|
|
|
480
|
|
92
|
481
|
|
160
|
482 if (ccf->master == 0) {
|
|
0
|
483 return NGX_OK;
|
|
|
484 }
|
|
|
485
|
|
160
|
486 if (ngx_accept_mutex_ptr) {
|
|
|
487 return NGX_OK;
|
|
|
488 }
|
|
|
489
|
|
|
490
|
|
|
491 /* cl should be equal or bigger than cache line size */
|
|
|
492
|
|
|
493 cl = 128;
|
|
|
494
|
|
|
495 size = cl /* ngx_accept_mutex */
|
|
516
|
496 + cl /* ngx_connection_counter */
|
|
|
497 + cl; /* ngx_temp_number */
|
|
0
|
498
|
|
|
499 #if (NGX_STAT_STUB)
|
|
|
500
|
|
160
|
501 size += cl /* ngx_stat_accepted */
|
|
|
502 + cl /* ngx_stat_handled */
|
|
|
503 + cl /* ngx_stat_requests */
|
|
|
504 + cl /* ngx_stat_active */
|
|
|
505 + cl /* ngx_stat_reading */
|
|
|
506 + cl; /* ngx_stat_writing */
|
|
0
|
507
|
|
|
508 #endif
|
|
|
509
|
|
154
|
510 shm.size = size;
|
|
480
|
511 shm.name.len = sizeof("nginx_shared_zone");
|
|
|
512 shm.name.data = (u_char *) "nginx_shared_zone";
|
|
154
|
513 shm.log = cycle->log;
|
|
|
514
|
|
|
515 if (ngx_shm_alloc(&shm) != NGX_OK) {
|
|
0
|
516 return NGX_ERROR;
|
|
|
517 }
|
|
|
518
|
|
154
|
519 shared = shm.addr;
|
|
|
520
|
|
0
|
521 ngx_accept_mutex_ptr = (ngx_atomic_t *) shared;
|
|
624
|
522 ngx_accept_mutex.spin = (ngx_uint_t) -1;
|
|
160
|
523
|
|
650
|
524 if (ngx_shmtx_create(&ngx_accept_mutex, (ngx_shmtx_sh_t *) shared,
|
|
|
525 cycle->lock_file.data)
|
|
160
|
526 != NGX_OK)
|
|
|
527 {
|
|
|
528 return NGX_ERROR;
|
|
|
529 }
|
|
|
530
|
|
|
531 ngx_connection_counter = (ngx_atomic_t *) (shared + 1 * cl);
|
|
0
|
532
|
|
480
|
533 (void) ngx_atomic_cmp_set(ngx_connection_counter, 0, 1);
|
|
112
|
534
|
|
0
|
535 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
10
|
536 "counter: %p, %d",
|
|
0
|
537 ngx_connection_counter, *ngx_connection_counter);
|
|
|
538
|
|
516
|
539 ngx_temp_number = (ngx_atomic_t *) (shared + 2 * cl);
|
|
|
540
|
|
|
541 tp = ngx_timeofday();
|
|
|
542
|
|
|
543 ngx_random_number = (tp->msec << 16) + ngx_pid;
|
|
|
544
|
|
|
545 #if (NGX_STAT_STUB)
|
|
|
546
|
|
|
547 ngx_stat_accepted = (ngx_atomic_t *) (shared + 3 * cl);
|
|
|
548 ngx_stat_handled = (ngx_atomic_t *) (shared + 4 * cl);
|
|
|
549 ngx_stat_requests = (ngx_atomic_t *) (shared + 5 * cl);
|
|
|
550 ngx_stat_active = (ngx_atomic_t *) (shared + 6 * cl);
|
|
|
551 ngx_stat_reading = (ngx_atomic_t *) (shared + 7 * cl);
|
|
|
552 ngx_stat_writing = (ngx_atomic_t *) (shared + 8 * cl);
|
|
|
553
|
|
|
554 #endif
|
|
|
555
|
|
0
|
556 return NGX_OK;
|
|
|
557 }
|
|
|
558
|
|
|
559
|
|
112
|
560 #if !(NGX_WIN32)
|
|
|
561
|
|
|
562 void
|
|
|
563 ngx_timer_signal_handler(int signo)
|
|
|
564 {
|
|
|
565 ngx_event_timer_alarm = 1;
|
|
|
566
|
|
|
567 #if 1
|
|
|
568 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ngx_cycle->log, 0, "timer signal");
|
|
|
569 #endif
|
|
|
570 }
|
|
|
571
|
|
|
572 #endif
|
|
|
573
|
|
|
574
|
|
58
|
575 static ngx_int_t
|
|
|
576 ngx_event_process_init(ngx_cycle_t *cycle)
|
|
0
|
577 {
|
|
|
578 ngx_uint_t m, i;
|
|
|
579 ngx_event_t *rev, *wev;
|
|
92
|
580 ngx_listening_t *ls;
|
|
|
581 ngx_connection_t *c, *next, *old;
|
|
0
|
582 ngx_core_conf_t *ccf;
|
|
|
583 ngx_event_conf_t *ecf;
|
|
|
584 ngx_event_module_t *module;
|
|
|
585
|
|
|
586 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
|
|
|
587 ecf = ngx_event_get_conf(cycle->conf_ctx, ngx_event_core_module);
|
|
|
588
|
|
258
|
589 if (ccf->master && ccf->worker_processes > 1 && ecf->accept_mutex) {
|
|
160
|
590 ngx_use_accept_mutex = 1;
|
|
0
|
591 ngx_accept_mutex_held = 0;
|
|
|
592 ngx_accept_mutex_delay = ecf->accept_mutex_delay;
|
|
160
|
593
|
|
|
594 } else {
|
|
|
595 ngx_use_accept_mutex = 0;
|
|
0
|
596 }
|
|
|
597
|
|
|
598 #if (NGX_THREADS)
|
|
50
|
599 ngx_posted_events_mutex = ngx_mutex_init(cycle->log, 0);
|
|
|
600 if (ngx_posted_events_mutex == NULL) {
|
|
0
|
601 return NGX_ERROR;
|
|
|
602 }
|
|
|
603 #endif
|
|
|
604
|
|
|
605 if (ngx_event_timer_init(cycle->log) == NGX_ERROR) {
|
|
|
606 return NGX_ERROR;
|
|
|
607 }
|
|
|
608
|
|
|
609 for (m = 0; ngx_modules[m]; m++) {
|
|
|
610 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
611 continue;
|
|
|
612 }
|
|
|
613
|
|
384
|
614 if (ngx_modules[m]->ctx_index != ecf->use) {
|
|
|
615 continue;
|
|
0
|
616 }
|
|
384
|
617
|
|
|
618 module = ngx_modules[m]->ctx;
|
|
|
619
|
|
|
620 if (module->actions.init(cycle, ngx_timer_resolution) != NGX_OK) {
|
|
|
621 /* fatal */
|
|
|
622 exit(2);
|
|
|
623 }
|
|
|
624
|
|
|
625 break;
|
|
0
|
626 }
|
|
|
627
|
|
92
|
628 #if !(NGX_WIN32)
|
|
|
629
|
|
112
|
630 if (ngx_timer_resolution && !(ngx_event_flags & NGX_USE_TIMER_EVENT)) {
|
|
356
|
631 struct sigaction sa;
|
|
|
632 struct itimerval itv;
|
|
112
|
633
|
|
|
634 ngx_memzero(&sa, sizeof(struct sigaction));
|
|
|
635 sa.sa_handler = ngx_timer_signal_handler;
|
|
|
636 sigemptyset(&sa.sa_mask);
|
|
|
637
|
|
|
638 if (sigaction(SIGALRM, &sa, NULL) == -1) {
|
|
|
639 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
640 "sigaction(SIGALRM) failed");
|
|
|
641 return NGX_ERROR;
|
|
|
642 }
|
|
|
643
|
|
|
644 itv.it_interval.tv_sec = ngx_timer_resolution / 1000;
|
|
|
645 itv.it_interval.tv_usec = (ngx_timer_resolution % 1000) * 1000;
|
|
|
646 itv.it_value.tv_sec = ngx_timer_resolution / 1000;
|
|
|
647 itv.it_value.tv_usec = (ngx_timer_resolution % 1000 ) * 1000;
|
|
|
648
|
|
|
649 if (setitimer(ITIMER_REAL, &itv, NULL) == -1) {
|
|
|
650 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
651 "setitimer() failed");
|
|
126
|
652 }
|
|
112
|
653 }
|
|
|
654
|
|
92
|
655 if (ngx_event_flags & NGX_USE_FD_EVENT) {
|
|
356
|
656 struct rlimit rlmt;
|
|
92
|
657
|
|
|
658 if (getrlimit(RLIMIT_NOFILE, &rlmt) == -1) {
|
|
|
659 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
660 "getrlimit(RLIMIT_NOFILE) failed");
|
|
|
661 return NGX_ERROR;
|
|
|
662 }
|
|
|
663
|
|
|
664 cycle->files_n = (ngx_uint_t) rlmt.rlim_cur;
|
|
|
665
|
|
|
666 cycle->files = ngx_calloc(sizeof(ngx_connection_t *) * cycle->files_n,
|
|
|
667 cycle->log);
|
|
|
668 if (cycle->files == NULL) {
|
|
|
669 return NGX_ERROR;
|
|
|
670 }
|
|
|
671 }
|
|
|
672
|
|
|
673 #endif
|
|
|
674
|
|
384
|
675 cycle->connections =
|
|
|
676 ngx_alloc(sizeof(ngx_connection_t) * cycle->connection_n, cycle->log);
|
|
110
|
677 if (cycle->connections == NULL) {
|
|
0
|
678 return NGX_ERROR;
|
|
|
679 }
|
|
|
680
|
|
110
|
681 c = cycle->connections;
|
|
0
|
682
|
|
384
|
683 cycle->read_events = ngx_alloc(sizeof(ngx_event_t) * cycle->connection_n,
|
|
0
|
684 cycle->log);
|
|
110
|
685 if (cycle->read_events == NULL) {
|
|
0
|
686 return NGX_ERROR;
|
|
|
687 }
|
|
|
688
|
|
110
|
689 rev = cycle->read_events;
|
|
0
|
690 for (i = 0; i < cycle->connection_n; i++) {
|
|
|
691 rev[i].closed = 1;
|
|
30
|
692 rev[i].instance = 1;
|
|
0
|
693 #if (NGX_THREADS)
|
|
|
694 rev[i].lock = &c[i].lock;
|
|
|
695 rev[i].own_lock = &c[i].lock;
|
|
|
696 #endif
|
|
|
697 }
|
|
|
698
|
|
384
|
699 cycle->write_events = ngx_alloc(sizeof(ngx_event_t) * cycle->connection_n,
|
|
30
|
700 cycle->log);
|
|
110
|
701 if (cycle->write_events == NULL) {
|
|
0
|
702 return NGX_ERROR;
|
|
|
703 }
|
|
|
704
|
|
110
|
705 wev = cycle->write_events;
|
|
0
|
706 for (i = 0; i < cycle->connection_n; i++) {
|
|
|
707 wev[i].closed = 1;
|
|
|
708 #if (NGX_THREADS)
|
|
|
709 wev[i].lock = &c[i].lock;
|
|
|
710 wev[i].own_lock = &c[i].lock;
|
|
|
711 #endif
|
|
|
712 }
|
|
|
713
|
|
92
|
714 i = cycle->connection_n;
|
|
|
715 next = NULL;
|
|
|
716
|
|
|
717 do {
|
|
|
718 i--;
|
|
|
719
|
|
|
720 c[i].data = next;
|
|
110
|
721 c[i].read = &cycle->read_events[i];
|
|
|
722 c[i].write = &cycle->write_events[i];
|
|
92
|
723 c[i].fd = (ngx_socket_t) -1;
|
|
|
724
|
|
|
725 next = &c[i];
|
|
|
726
|
|
|
727 #if (NGX_THREADS)
|
|
|
728 c[i].lock = 0;
|
|
|
729 #endif
|
|
|
730 } while (i);
|
|
|
731
|
|
|
732 cycle->free_connections = next;
|
|
384
|
733 cycle->free_connection_n = cycle->connection_n;
|
|
92
|
734
|
|
0
|
735 /* for each listening socket */
|
|
|
736
|
|
92
|
737 ls = cycle->listening.elts;
|
|
0
|
738 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
739
|
|
92
|
740 c = ngx_get_connection(ls[i].fd, cycle->log);
|
|
0
|
741
|
|
92
|
742 if (c == NULL) {
|
|
|
743 return NGX_ERROR;
|
|
|
744 }
|
|
0
|
745
|
|
92
|
746 c->log = &ls[i].log;
|
|
|
747
|
|
|
748 c->listening = &ls[i];
|
|
|
749 ls[i].connection = c;
|
|
|
750
|
|
110
|
751 rev = c->read;
|
|
0
|
752
|
|
|
753 rev->log = c->log;
|
|
|
754 rev->accept = 1;
|
|
|
755
|
|
18
|
756 #if (NGX_HAVE_DEFERRED_ACCEPT)
|
|
92
|
757 rev->deferred_accept = ls[i].deferred_accept;
|
|
0
|
758 #endif
|
|
|
759
|
|
|
760 if (!(ngx_event_flags & NGX_USE_IOCP_EVENT)) {
|
|
92
|
761 if (ls[i].previous) {
|
|
0
|
762
|
|
|
763 /*
|
|
|
764 * delete the old accept events that were bound to
|
|
|
765 * the old cycle read events array
|
|
|
766 */
|
|
|
767
|
|
92
|
768 old = ls[i].previous->connection;
|
|
|
769
|
|
|
770 if (ngx_del_event(old->read, NGX_READ_EVENT, NGX_CLOSE_EVENT)
|
|
|
771 == NGX_ERROR)
|
|
0
|
772 {
|
|
|
773 return NGX_ERROR;
|
|
|
774 }
|
|
|
775
|
|
92
|
776 old->fd = (ngx_socket_t) -1;
|
|
0
|
777 }
|
|
|
778 }
|
|
|
779
|
|
10
|
780 #if (NGX_WIN32)
|
|
0
|
781
|
|
|
782 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
|
|
356
|
783 ngx_iocp_conf_t *iocpcf;
|
|
|
784
|
|
58
|
785 rev->handler = ngx_event_acceptex;
|
|
0
|
786
|
|
484
|
787 if (ngx_use_accept_mutex) {
|
|
|
788 continue;
|
|
|
789 }
|
|
|
790
|
|
0
|
791 if (ngx_add_event(rev, 0, NGX_IOCP_ACCEPT) == NGX_ERROR) {
|
|
|
792 return NGX_ERROR;
|
|
|
793 }
|
|
|
794
|
|
92
|
795 ls[i].log.handler = ngx_acceptex_log_error;
|
|
|
796
|
|
0
|
797 iocpcf = ngx_event_get_conf(cycle->conf_ctx, ngx_iocp_module);
|
|
92
|
798 if (ngx_event_post_acceptex(&ls[i], iocpcf->post_acceptex)
|
|
|
799 == NGX_ERROR)
|
|
0
|
800 {
|
|
|
801 return NGX_ERROR;
|
|
|
802 }
|
|
|
803
|
|
|
804 } else {
|
|
58
|
805 rev->handler = ngx_event_accept;
|
|
10
|
806
|
|
484
|
807 if (ngx_use_accept_mutex) {
|
|
|
808 continue;
|
|
|
809 }
|
|
|
810
|
|
0
|
811 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
812 return NGX_ERROR;
|
|
|
813 }
|
|
|
814 }
|
|
|
815
|
|
|
816 #else
|
|
|
817
|
|
58
|
818 rev->handler = ngx_event_accept;
|
|
0
|
819
|
|
160
|
820 if (ngx_use_accept_mutex) {
|
|
0
|
821 continue;
|
|
|
822 }
|
|
|
823
|
|
|
824 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
|
|
|
825 if (ngx_add_conn(c) == NGX_ERROR) {
|
|
|
826 return NGX_ERROR;
|
|
|
827 }
|
|
|
828
|
|
|
829 } else {
|
|
|
830 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
831 return NGX_ERROR;
|
|
|
832 }
|
|
|
833 }
|
|
|
834
|
|
|
835 #endif
|
|
92
|
836
|
|
0
|
837 }
|
|
|
838
|
|
|
839 return NGX_OK;
|
|
|
840 }
|
|
|
841
|
|
|
842
|
|
58
|
843 ngx_int_t
|
|
|
844 ngx_send_lowat(ngx_connection_t *c, size_t lowat)
|
|
2
|
845 {
|
|
|
846 int sndlowat;
|
|
|
847
|
|
4
|
848 #if (NGX_HAVE_LOWAT_EVENT)
|
|
2
|
849
|
|
4
|
850 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
2
|
851 c->write->available = lowat;
|
|
|
852 return NGX_OK;
|
|
|
853 }
|
|
|
854
|
|
|
855 #endif
|
|
126
|
856
|
|
2
|
857 if (lowat == 0 || c->sndlowat) {
|
|
|
858 return NGX_OK;
|
|
|
859 }
|
|
|
860
|
|
|
861 sndlowat = (int) lowat;
|
|
|
862
|
|
|
863 if (setsockopt(c->fd, SOL_SOCKET, SO_SNDLOWAT,
|
|
282
|
864 (const void *) &sndlowat, sizeof(int))
|
|
|
865 == -1)
|
|
2
|
866 {
|
|
|
867 ngx_connection_error(c, ngx_socket_errno,
|
|
|
868 "setsockopt(SO_SNDLOWAT) failed");
|
|
|
869 return NGX_ERROR;
|
|
|
870 }
|
|
|
871
|
|
|
872 c->sndlowat = 1;
|
|
|
873
|
|
|
874 return NGX_OK;
|
|
|
875 }
|
|
|
876
|
|
|
877
|
|
58
|
878 static char *
|
|
|
879 ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
880 {
|
|
50
|
881 char *rv;
|
|
0
|
882 void ***ctx;
|
|
50
|
883 ngx_uint_t i;
|
|
0
|
884 ngx_conf_t pcf;
|
|
50
|
885 ngx_event_module_t *m;
|
|
0
|
886
|
|
|
887 /* count the number of the event modules and set up their indices */
|
|
|
888
|
|
|
889 ngx_event_max_module = 0;
|
|
50
|
890 for (i = 0; ngx_modules[i]; i++) {
|
|
|
891 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
|
0
|
892 continue;
|
|
|
893 }
|
|
|
894
|
|
50
|
895 ngx_modules[i]->ctx_index = ngx_event_max_module++;
|
|
0
|
896 }
|
|
|
897
|
|
50
|
898 ctx = ngx_pcalloc(cf->pool, sizeof(void *));
|
|
|
899 if (ctx == NULL) {
|
|
|
900 return NGX_CONF_ERROR;
|
|
|
901 }
|
|
0
|
902
|
|
50
|
903 *ctx = ngx_pcalloc(cf->pool, ngx_event_max_module * sizeof(void *));
|
|
|
904 if (*ctx == NULL) {
|
|
|
905 return NGX_CONF_ERROR;
|
|
|
906 }
|
|
0
|
907
|
|
|
908 *(void **) conf = ctx;
|
|
|
909
|
|
50
|
910 for (i = 0; ngx_modules[i]; i++) {
|
|
|
911 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
|
0
|
912 continue;
|
|
|
913 }
|
|
|
914
|
|
50
|
915 m = ngx_modules[i]->ctx;
|
|
0
|
916
|
|
50
|
917 if (m->create_conf) {
|
|
|
918 (*ctx)[ngx_modules[i]->ctx_index] = m->create_conf(cf->cycle);
|
|
|
919 if ((*ctx)[ngx_modules[i]->ctx_index] == NULL) {
|
|
|
920 return NGX_CONF_ERROR;
|
|
|
921 }
|
|
0
|
922 }
|
|
|
923 }
|
|
|
924
|
|
|
925 pcf = *cf;
|
|
|
926 cf->ctx = ctx;
|
|
|
927 cf->module_type = NGX_EVENT_MODULE;
|
|
|
928 cf->cmd_type = NGX_EVENT_CONF;
|
|
50
|
929
|
|
0
|
930 rv = ngx_conf_parse(cf, NULL);
|
|
50
|
931
|
|
0
|
932 *cf = pcf;
|
|
|
933
|
|
|
934 if (rv != NGX_CONF_OK)
|
|
|
935 return rv;
|
|
|
936
|
|
50
|
937 for (i = 0; ngx_modules[i]; i++) {
|
|
|
938 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
|
0
|
939 continue;
|
|
|
940 }
|
|
|
941
|
|
50
|
942 m = ngx_modules[i]->ctx;
|
|
0
|
943
|
|
50
|
944 if (m->init_conf) {
|
|
|
945 rv = m->init_conf(cf->cycle, (*ctx)[ngx_modules[i]->ctx_index]);
|
|
0
|
946 if (rv != NGX_CONF_OK) {
|
|
|
947 return rv;
|
|
|
948 }
|
|
|
949 }
|
|
|
950 }
|
|
|
951
|
|
|
952 return NGX_CONF_OK;
|
|
|
953 }
|
|
|
954
|
|
|
955
|
|
58
|
956 static char *
|
|
|
957 ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
958 {
|
|
|
959 ngx_event_conf_t *ecf = conf;
|
|
|
960
|
|
|
961 ngx_str_t *value;
|
|
|
962
|
|
|
963 if (ecf->connections != NGX_CONF_UNSET_UINT) {
|
|
378
|
964 return "is duplicate";
|
|
0
|
965 }
|
|
|
966
|
|
130
|
967 if (ngx_strcmp(cmd->name.data, "connections") == 0) {
|
|
|
968 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
969 "the \"connections\" directive is deprecated, "
|
|
|
970 "use the \"worker_connections\" directive instead");
|
|
|
971 }
|
|
|
972
|
|
0
|
973 value = cf->args->elts;
|
|
|
974 ecf->connections = ngx_atoi(value[1].data, value[1].len);
|
|
|
975 if (ecf->connections == (ngx_uint_t) NGX_ERROR) {
|
|
|
976 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
977 "invalid number \"%V\"", &value[1]);
|
|
0
|
978
|
|
|
979 return NGX_CONF_ERROR;
|
|
|
980 }
|
|
|
981
|
|
|
982 cf->cycle->connection_n = ecf->connections;
|
|
|
983
|
|
|
984 return NGX_CONF_OK;
|
|
|
985 }
|
|
|
986
|
|
|
987
|
|
58
|
988 static char *
|
|
|
989 ngx_event_use(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
990 {
|
|
|
991 ngx_event_conf_t *ecf = conf;
|
|
|
992
|
|
|
993 ngx_int_t m;
|
|
|
994 ngx_str_t *value;
|
|
|
995 ngx_event_conf_t *old_ecf;
|
|
|
996 ngx_event_module_t *module;
|
|
|
997
|
|
|
998 if (ecf->use != NGX_CONF_UNSET_UINT) {
|
|
378
|
999 return "is duplicate";
|
|
0
|
1000 }
|
|
|
1001
|
|
|
1002 value = cf->args->elts;
|
|
|
1003
|
|
|
1004 if (cf->cycle->old_cycle->conf_ctx) {
|
|
|
1005 old_ecf = ngx_event_get_conf(cf->cycle->old_cycle->conf_ctx,
|
|
|
1006 ngx_event_core_module);
|
|
|
1007 } else {
|
|
|
1008 old_ecf = NULL;
|
|
|
1009 }
|
|
|
1010
|
|
|
1011
|
|
|
1012 for (m = 0; ngx_modules[m]; m++) {
|
|
|
1013 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
1014 continue;
|
|
|
1015 }
|
|
|
1016
|
|
|
1017 module = ngx_modules[m]->ctx;
|
|
|
1018 if (module->name->len == value[1].len) {
|
|
|
1019 if (ngx_strcmp(module->name->data, value[1].data) == 0) {
|
|
|
1020 ecf->use = ngx_modules[m]->ctx_index;
|
|
|
1021 ecf->name = module->name->data;
|
|
|
1022
|
|
|
1023 if (ngx_process == NGX_PROCESS_SINGLE
|
|
|
1024 && old_ecf
|
|
|
1025 && old_ecf->use != ecf->use)
|
|
|
1026 {
|
|
|
1027 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
16
|
1028 "when the server runs without a master process "
|
|
|
1029 "the \"%V\" event type must be the same as "
|
|
|
1030 "in previous configuration - \"%s\" "
|
|
640
|
1031 "and it cannot be changed on the fly, "
|
|
16
|
1032 "to change it you need to stop server "
|
|
|
1033 "and start it again",
|
|
|
1034 &value[1], old_ecf->name);
|
|
0
|
1035
|
|
|
1036 return NGX_CONF_ERROR;
|
|
|
1037 }
|
|
|
1038
|
|
|
1039 return NGX_CONF_OK;
|
|
|
1040 }
|
|
|
1041 }
|
|
|
1042 }
|
|
|
1043
|
|
|
1044 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
1045 "invalid event type \"%V\"", &value[1]);
|
|
0
|
1046
|
|
|
1047 return NGX_CONF_ERROR;
|
|
|
1048 }
|
|
|
1049
|
|
|
1050
|
|
58
|
1051 static char *
|
|
|
1052 ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
1053 {
|
|
|
1054 #if (NGX_DEBUG)
|
|
|
1055 ngx_event_conf_t *ecf = conf;
|
|
|
1056
|
|
326
|
1057 ngx_int_t rc;
|
|
|
1058 ngx_str_t *value;
|
|
214
|
1059 ngx_event_debug_t *dc;
|
|
|
1060 struct hostent *h;
|
|
454
|
1061 ngx_cidr_t cidr;
|
|
0
|
1062
|
|
|
1063 value = cf->args->elts;
|
|
|
1064
|
|
214
|
1065 dc = ngx_array_push(&ecf->debug_connection);
|
|
|
1066 if (dc == NULL) {
|
|
0
|
1067 return NGX_CONF_ERROR;
|
|
|
1068 }
|
|
|
1069
|
|
454
|
1070 rc = ngx_ptocidr(&value[1], &cidr);
|
|
326
|
1071
|
|
|
1072 if (rc == NGX_DONE) {
|
|
|
1073 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
1074 "low address bits of %V are meaningless", &value[1]);
|
|
|
1075 rc = NGX_OK;
|
|
|
1076 }
|
|
|
1077
|
|
|
1078 if (rc == NGX_OK) {
|
|
454
|
1079
|
|
|
1080 /* AF_INET only */
|
|
|
1081
|
|
|
1082 if (cidr.family != AF_INET) {
|
|
|
1083 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1084 "\"debug_connection\" supports IPv4 only");
|
|
|
1085 return NGX_CONF_ERROR;
|
|
|
1086 }
|
|
|
1087
|
|
|
1088 dc->mask = cidr.u.in.mask;
|
|
|
1089 dc->addr = cidr.u.in.addr;
|
|
|
1090
|
|
326
|
1091 return NGX_CONF_OK;
|
|
0
|
1092 }
|
|
|
1093
|
|
|
1094 h = gethostbyname((char *) value[1].data);
|
|
|
1095
|
|
|
1096 if (h == NULL || h->h_addr_list[0] == NULL) {
|
|
|
1097 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
1098 "host \"%s\" not found", value[1].data);
|
|
0
|
1099 return NGX_CONF_ERROR;
|
|
|
1100 }
|
|
|
1101
|
|
214
|
1102 dc->mask = 0xffffffff;
|
|
|
1103 dc->addr = *(in_addr_t *)(h->h_addr_list[0]);
|
|
0
|
1104
|
|
|
1105 #else
|
|
|
1106
|
|
|
1107 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
1108 "\"debug_connection\" is ignored, you need to rebuild "
|
|
|
1109 "nginx using --with-debug option to enable it");
|
|
|
1110
|
|
|
1111 #endif
|
|
|
1112
|
|
326
|
1113 return NGX_CONF_OK;
|
|
0
|
1114 }
|
|
|
1115
|
|
|
1116
|
|
58
|
1117 static void *
|
|
|
1118 ngx_event_create_conf(ngx_cycle_t *cycle)
|
|
0
|
1119 {
|
|
|
1120 ngx_event_conf_t *ecf;
|
|
|
1121
|
|
50
|
1122 ecf = ngx_palloc(cycle->pool, sizeof(ngx_event_conf_t));
|
|
|
1123 if (ecf == NULL) {
|
|
496
|
1124 return NULL;
|
|
50
|
1125 }
|
|
0
|
1126
|
|
|
1127 ecf->connections = NGX_CONF_UNSET_UINT;
|
|
|
1128 ecf->use = NGX_CONF_UNSET_UINT;
|
|
|
1129 ecf->multi_accept = NGX_CONF_UNSET;
|
|
|
1130 ecf->accept_mutex = NGX_CONF_UNSET;
|
|
|
1131 ecf->accept_mutex_delay = NGX_CONF_UNSET_MSEC;
|
|
|
1132 ecf->name = (void *) NGX_CONF_UNSET;
|
|
|
1133
|
|
|
1134 #if (NGX_DEBUG)
|
|
50
|
1135
|
|
|
1136 if (ngx_array_init(&ecf->debug_connection, cycle->pool, 4,
|
|
214
|
1137 sizeof(ngx_event_debug_t)) == NGX_ERROR)
|
|
50
|
1138 {
|
|
496
|
1139 return NULL;
|
|
50
|
1140 }
|
|
|
1141
|
|
0
|
1142 #endif
|
|
|
1143
|
|
|
1144 return ecf;
|
|
|
1145 }
|
|
|
1146
|
|
|
1147
|
|
58
|
1148 static char *
|
|
|
1149 ngx_event_init_conf(ngx_cycle_t *cycle, void *conf)
|
|
0
|
1150 {
|
|
|
1151 ngx_event_conf_t *ecf = conf;
|
|
16
|
1152
|
|
50
|
1153 #if (NGX_HAVE_EPOLL) && !(NGX_TEST_BUILD_EPOLL)
|
|
|
1154 int fd;
|
|
|
1155 #endif
|
|
|
1156 #if (NGX_HAVE_RTSIG)
|
|
|
1157 ngx_uint_t rtsig;
|
|
122
|
1158 ngx_core_conf_t *ccf;
|
|
50
|
1159 #endif
|
|
384
|
1160 ngx_int_t i;
|
|
16
|
1161 ngx_module_t *module;
|
|
|
1162 ngx_event_module_t *event_module;
|
|
|
1163
|
|
|
1164 module = NULL;
|
|
|
1165
|
|
18
|
1166 #if (NGX_HAVE_EPOLL) && !(NGX_TEST_BUILD_EPOLL)
|
|
16
|
1167
|
|
|
1168 fd = epoll_create(100);
|
|
|
1169
|
|
|
1170 if (fd != -1) {
|
|
|
1171 close(fd);
|
|
|
1172 module = &ngx_epoll_module;
|
|
|
1173
|
|
|
1174 } else if (ngx_errno != NGX_ENOSYS) {
|
|
|
1175 module = &ngx_epoll_module;
|
|
|
1176 }
|
|
|
1177
|
|
|
1178 #endif
|
|
|
1179
|
|
18
|
1180 #if (NGX_HAVE_RTSIG)
|
|
16
|
1181
|
|
|
1182 if (module == NULL) {
|
|
|
1183 module = &ngx_rtsig_module;
|
|
|
1184 rtsig = 1;
|
|
50
|
1185
|
|
|
1186 } else {
|
|
|
1187 rtsig = 0;
|
|
16
|
1188 }
|
|
|
1189
|
|
|
1190 #endif
|
|
|
1191
|
|
18
|
1192 #if (NGX_HAVE_DEVPOLL)
|
|
16
|
1193
|
|
|
1194 module = &ngx_devpoll_module;
|
|
|
1195
|
|
0
|
1196 #endif
|
|
|
1197
|
|
18
|
1198 #if (NGX_HAVE_KQUEUE)
|
|
0
|
1199
|
|
16
|
1200 module = &ngx_kqueue_module;
|
|
0
|
1201
|
|
16
|
1202 #endif
|
|
0
|
1203
|
|
18
|
1204 #if (NGX_HAVE_SELECT)
|
|
0
|
1205
|
|
16
|
1206 if (module == NULL) {
|
|
|
1207 module = &ngx_select_module;
|
|
|
1208 }
|
|
|
1209
|
|
0
|
1210 #endif
|
|
|
1211
|
|
16
|
1212 if (module == NULL) {
|
|
|
1213 for (i = 0; ngx_modules[i]; i++) {
|
|
384
|
1214
|
|
|
1215 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
|
|
1216 continue;
|
|
|
1217 }
|
|
|
1218
|
|
|
1219 event_module = ngx_modules[i]->ctx;
|
|
0
|
1220
|
|
384
|
1221 if (ngx_strcmp(event_module->name->data, event_core_name.data) == 0)
|
|
|
1222 {
|
|
|
1223 continue;
|
|
|
1224 }
|
|
0
|
1225
|
|
384
|
1226 module = ngx_modules[i];
|
|
|
1227 break;
|
|
0
|
1228 }
|
|
|
1229 }
|
|
|
1230
|
|
16
|
1231 if (module == NULL) {
|
|
0
|
1232 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0, "no events module found");
|
|
|
1233 return NGX_CONF_ERROR;
|
|
|
1234 }
|
|
|
1235
|
|
384
|
1236 ngx_conf_init_uint_value(ecf->connections, DEFAULT_CONNECTIONS);
|
|
16
|
1237 cycle->connection_n = ecf->connections;
|
|
0
|
1238
|
|
212
|
1239 ngx_conf_init_uint_value(ecf->use, module->ctx_index);
|
|
0
|
1240
|
|
16
|
1241 event_module = module->ctx;
|
|
|
1242 ngx_conf_init_ptr_value(ecf->name, event_module->name->data);
|
|
0
|
1243
|
|
|
1244 ngx_conf_init_value(ecf->multi_accept, 0);
|
|
|
1245 ngx_conf_init_value(ecf->accept_mutex, 1);
|
|
|
1246 ngx_conf_init_msec_value(ecf->accept_mutex_delay, 500);
|
|
|
1247
|
|
16
|
1248
|
|
50
|
1249 #if (NGX_HAVE_RTSIG)
|
|
|
1250
|
|
|
1251 if (!rtsig) {
|
|
|
1252 return NGX_CONF_OK;
|
|
|
1253 }
|
|
|
1254
|
|
|
1255 if (ecf->accept_mutex) {
|
|
16
|
1256 return NGX_CONF_OK;
|
|
0
|
1257 }
|
|
16
|
1258
|
|
|
1259 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
|
|
0
|
1260
|
|
16
|
1261 if (ccf->worker_processes == 0) {
|
|
|
1262 return NGX_CONF_OK;
|
|
|
1263 }
|
|
|
1264
|
|
|
1265 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
|
|
|
1266 "the \"rtsig\" method requires \"accept_mutex\" to be on");
|
|
|
1267
|
|
|
1268 return NGX_CONF_ERROR;
|
|
122
|
1269
|
|
|
1270 #else
|
|
|
1271
|
|
|
1272 return NGX_CONF_OK;
|
|
|
1273
|
|
|
1274 #endif
|
|
0
|
1275 }
|
