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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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660
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4 * Copyright (C) Nginx, Inc.
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0
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5 */
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6
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_event.h>
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11
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12
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13 #define DEFAULT_CONNECTIONS 512
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14
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15
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16
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16 extern ngx_module_t ngx_kqueue_module;
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236
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17 extern ngx_module_t ngx_eventport_module;
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16
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18 extern ngx_module_t ngx_devpoll_module;
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19 extern ngx_module_t ngx_epoll_module;
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20 extern ngx_module_t ngx_rtsig_module;
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0
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21 extern ngx_module_t ngx_select_module;
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22
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23
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24 static ngx_int_t ngx_event_module_init(ngx_cycle_t *cycle);
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25 static ngx_int_t ngx_event_process_init(ngx_cycle_t *cycle);
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26 static char *ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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27
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28 static char *ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd,
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58
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29 void *conf);
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0
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30 static char *ngx_event_use(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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31 static char *ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd,
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58
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32 void *conf);
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0
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33
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34 static void *ngx_event_create_conf(ngx_cycle_t *cycle);
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35 static char *ngx_event_init_conf(ngx_cycle_t *cycle, void *conf);
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36
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37
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112
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38 static ngx_uint_t ngx_timer_resolution;
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39 sig_atomic_t ngx_event_timer_alarm;
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40
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44
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41 static ngx_uint_t ngx_event_max_module;
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0
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42
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44
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43 ngx_uint_t ngx_event_flags;
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44 ngx_event_actions_t ngx_event_actions;
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0
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45
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46
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516
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47 static ngx_atomic_t connection_counter = 1;
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42
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48 ngx_atomic_t *ngx_connection_counter = &connection_counter;
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0
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49
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50
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42
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51 ngx_atomic_t *ngx_accept_mutex_ptr;
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160
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52 ngx_shmtx_t ngx_accept_mutex;
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53 ngx_uint_t ngx_use_accept_mutex;
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236
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54 ngx_uint_t ngx_accept_events;
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44
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55 ngx_uint_t ngx_accept_mutex_held;
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56 ngx_msec_t ngx_accept_mutex_delay;
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57 ngx_int_t ngx_accept_disabled;
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110
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58 ngx_file_t ngx_accept_mutex_lock_file;
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0
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59
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60
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61 #if (NGX_STAT_STUB)
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62
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63 ngx_atomic_t ngx_stat_accepted0;
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64 ngx_atomic_t *ngx_stat_accepted = &ngx_stat_accepted0;
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44
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65 ngx_atomic_t ngx_stat_handled0;
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66 ngx_atomic_t *ngx_stat_handled = &ngx_stat_handled0;
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0
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67 ngx_atomic_t ngx_stat_requests0;
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68 ngx_atomic_t *ngx_stat_requests = &ngx_stat_requests0;
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69 ngx_atomic_t ngx_stat_active0;
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70 ngx_atomic_t *ngx_stat_active = &ngx_stat_active0;
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71 ngx_atomic_t ngx_stat_reading0;
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72 ngx_atomic_t *ngx_stat_reading = &ngx_stat_reading0;
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73 ngx_atomic_t ngx_stat_writing0;
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44
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74 ngx_atomic_t *ngx_stat_writing = &ngx_stat_writing0;
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0
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75
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76 #endif
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77
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78
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79
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80 static ngx_command_t ngx_events_commands[] = {
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81
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82 { ngx_string("events"),
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83 NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
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84 ngx_events_block,
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85 0,
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86 0,
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87 NULL },
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88
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89 ngx_null_command
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90 };
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91
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126
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92
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0
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93 static ngx_core_module_t ngx_events_module_ctx = {
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94 ngx_string("events"),
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95 NULL,
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96 NULL
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126
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97 };
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0
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98
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99
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100 ngx_module_t ngx_events_module = {
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58
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101 NGX_MODULE_V1,
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0
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102 &ngx_events_module_ctx, /* module context */
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103 ngx_events_commands, /* module directives */
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104 NGX_CORE_MODULE, /* module type */
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90
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105 NULL, /* init master */
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0
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106 NULL, /* init module */
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90
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107 NULL, /* init process */
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108 NULL, /* init thread */
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109 NULL, /* exit thread */
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110 NULL, /* exit process */
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111 NULL, /* exit master */
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112 NGX_MODULE_V1_PADDING
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0
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113 };
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114
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115
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116 static ngx_str_t event_core_name = ngx_string("event_core");
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117
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118
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119 static ngx_command_t ngx_event_core_commands[] = {
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120
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92
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121 { ngx_string("worker_connections"),
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122 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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123 ngx_event_connections,
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124 0,
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125 0,
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126 NULL },
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127
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0
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128 { ngx_string("connections"),
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129 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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130 ngx_event_connections,
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131 0,
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132 0,
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133 NULL },
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134
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135 { ngx_string("use"),
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136 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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137 ngx_event_use,
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138 0,
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139 0,
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140 NULL },
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141
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142 { ngx_string("multi_accept"),
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216
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143 NGX_EVENT_CONF|NGX_CONF_FLAG,
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0
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144 ngx_conf_set_flag_slot,
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145 0,
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146 offsetof(ngx_event_conf_t, multi_accept),
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147 NULL },
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148
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149 { ngx_string("accept_mutex"),
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216
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150 NGX_EVENT_CONF|NGX_CONF_FLAG,
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0
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151 ngx_conf_set_flag_slot,
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152 0,
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153 offsetof(ngx_event_conf_t, accept_mutex),
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160
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154 NULL },
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0
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155
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156 { ngx_string("accept_mutex_delay"),
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157 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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158 ngx_conf_set_msec_slot,
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159 0,
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160 offsetof(ngx_event_conf_t, accept_mutex_delay),
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161 NULL },
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162
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163 { ngx_string("debug_connection"),
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164 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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165 ngx_event_debug_connection,
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166 0,
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167 0,
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168 NULL },
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169
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170 ngx_null_command
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171 };
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172
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173
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174 ngx_event_module_t ngx_event_core_module_ctx = {
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175 &event_core_name,
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176 ngx_event_create_conf, /* create configuration */
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177 ngx_event_init_conf, /* init configuration */
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178
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179 { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }
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180 };
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181
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182
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183 ngx_module_t ngx_event_core_module = {
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58
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184 NGX_MODULE_V1,
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0
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185 &ngx_event_core_module_ctx, /* module context */
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186 ngx_event_core_commands, /* module directives */
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187 NGX_EVENT_MODULE, /* module type */
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90
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188 NULL, /* init master */
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0
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189 ngx_event_module_init, /* init module */
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90
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190 ngx_event_process_init, /* init process */
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191 NULL, /* init thread */
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192 NULL, /* exit thread */
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193 NULL, /* exit process */
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194 NULL, /* exit master */
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195 NGX_MODULE_V1_PADDING
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0
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196 };
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197
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198
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112
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199 void
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200 ngx_process_events_and_timers(ngx_cycle_t *cycle)
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201 {
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202 ngx_uint_t flags;
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116
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203 ngx_msec_t timer, delta;
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112
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204
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205 if (ngx_timer_resolution) {
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206 timer = NGX_TIMER_INFINITE;
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207 flags = 0;
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208
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209 } else {
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210 timer = ngx_event_find_timer();
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211 flags = NGX_UPDATE_TIME;
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212
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213 #if (NGX_THREADS)
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214
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215 if (timer == NGX_TIMER_INFINITE || timer > 500) {
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216 timer = 500;
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217 }
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218
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219 #endif
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220 }
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221
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160
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222 if (ngx_use_accept_mutex) {
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112
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223 if (ngx_accept_disabled > 0) {
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224 ngx_accept_disabled--;
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225
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226 } else {
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227 if (ngx_trylock_accept_mutex(cycle) == NGX_ERROR) {
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228 return;
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229 }
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230
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231 if (ngx_accept_mutex_held) {
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232 flags |= NGX_POST_EVENTS;
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233
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234 } else {
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235 if (timer == NGX_TIMER_INFINITE
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236 || timer > ngx_accept_mutex_delay)
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237 {
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238 timer = ngx_accept_mutex_delay;
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239 }
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240 }
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241 }
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242 }
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243
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116
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244 delta = ngx_current_msec;
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245
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112
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246 (void) ngx_process_events(cycle, timer, flags);
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247
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116
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248 delta = ngx_current_msec - delta;
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249
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250 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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251 "timer delta: %M", delta);
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252
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112
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253 if (ngx_posted_accept_events) {
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254 ngx_event_process_posted(cycle, &ngx_posted_accept_events);
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255 }
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256
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257 if (ngx_accept_mutex_held) {
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160
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258 ngx_shmtx_unlock(&ngx_accept_mutex);
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112
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259 }
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260
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122
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261 if (delta) {
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262 ngx_event_expire_timers();
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263 }
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264
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112
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265 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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266 "posted events %p", ngx_posted_events);
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267
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268 if (ngx_posted_events) {
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269 if (ngx_threaded) {
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270 ngx_wakeup_worker_thread(cycle);
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271
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272 } else {
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273 ngx_event_process_posted(cycle, &ngx_posted_events);
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274 }
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275 }
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276 }
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277
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278
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58
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279 ngx_int_t
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324
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280 ngx_handle_read_event(ngx_event_t *rev, ngx_uint_t flags)
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58
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281 {
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282 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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126
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283
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58
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284 /* kqueue, epoll */
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285
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286 if (!rev->active && !rev->ready) {
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287 if (ngx_add_event(rev, NGX_READ_EVENT, NGX_CLEAR_EVENT)
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288 == NGX_ERROR)
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289 {
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290 return NGX_ERROR;
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291 }
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292 }
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126
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293
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58
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294 return NGX_OK;
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295
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296 } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
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297
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298 /* select, poll, /dev/poll */
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299
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300 if (!rev->active && !rev->ready) {
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301 if (ngx_add_event(rev, NGX_READ_EVENT, NGX_LEVEL_EVENT)
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302 == NGX_ERROR)
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303 {
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304 return NGX_ERROR;
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305 }
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306
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307 return NGX_OK;
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308 }
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309
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310 if (rev->active && (rev->ready || (flags & NGX_CLOSE_EVENT))) {
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311 if (ngx_del_event(rev, NGX_READ_EVENT, NGX_LEVEL_EVENT | flags)
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312 == NGX_ERROR)
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313 {
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314 return NGX_ERROR;
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315 }
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316
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317 return NGX_OK;
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318 }
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319
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236
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320 } else if (ngx_event_flags & NGX_USE_EVENTPORT_EVENT) {
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58
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321
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322 /* event ports */
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323
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236
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324 if (!rev->active && !rev->ready) {
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325 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
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58
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326 return NGX_ERROR;
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327 }
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236
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328
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329 return NGX_OK;
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58
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330 }
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126
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331
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236
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332 if (rev->oneshot && !rev->ready) {
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333 if (ngx_del_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
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334 return NGX_ERROR;
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335 }
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336
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337 return NGX_OK;
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338 }
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58
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339 }
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340
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341 /* aio, iocp, rtsig */
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342
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343 return NGX_OK;
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344 }
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345
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346
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347 ngx_int_t
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348 ngx_handle_write_event(ngx_event_t *wev, size_t lowat)
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349 {
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350 ngx_connection_t *c;
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351
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352 if (lowat) {
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236
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353 c = wev->data;
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58
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354
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355 if (ngx_send_lowat(c, lowat) == NGX_ERROR) {
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356 return NGX_ERROR;
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357 }
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358 }
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359
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360 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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361
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362 /* kqueue, epoll */
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363
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364 if (!wev->active && !wev->ready) {
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365 if (ngx_add_event(wev, NGX_WRITE_EVENT,
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366 NGX_CLEAR_EVENT | (lowat ? NGX_LOWAT_EVENT : 0))
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367 == NGX_ERROR)
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368 {
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369 return NGX_ERROR;
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370 }
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371 }
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372
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373 return NGX_OK;
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374
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375 } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
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376
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377 /* select, poll, /dev/poll */
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378
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379 if (!wev->active && !wev->ready) {
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380 if (ngx_add_event(wev, NGX_WRITE_EVENT, NGX_LEVEL_EVENT)
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381 == NGX_ERROR)
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382 {
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383 return NGX_ERROR;
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384 }
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385
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386 return NGX_OK;
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387 }
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388
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389 if (wev->active && wev->ready) {
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390 if (ngx_del_event(wev, NGX_WRITE_EVENT, NGX_LEVEL_EVENT)
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391 == NGX_ERROR)
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392 {
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393 return NGX_ERROR;
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394 }
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395
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396 return NGX_OK;
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397 }
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398
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236
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399 } else if (ngx_event_flags & NGX_USE_EVENTPORT_EVENT) {
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58
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400
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401 /* event ports */
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402
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236
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403 if (!wev->active && !wev->ready) {
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404 if (ngx_add_event(wev, NGX_WRITE_EVENT, 0) == NGX_ERROR) {
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58
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405 return NGX_ERROR;
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406 }
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236
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407
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408 return NGX_OK;
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58
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409 }
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126
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410
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236
|
411 if (wev->oneshot && wev->ready) {
|
|
|
412 if (ngx_del_event(wev, NGX_WRITE_EVENT, 0) == NGX_ERROR) {
|
|
|
413 return NGX_ERROR;
|
|
|
414 }
|
|
|
415
|
|
|
416 return NGX_OK;
|
|
|
417 }
|
|
58
|
418 }
|
|
|
419
|
|
|
420 /* aio, iocp, rtsig */
|
|
|
421
|
|
|
422 return NGX_OK;
|
|
|
423 }
|
|
|
424
|
|
|
425
|
|
|
426 static ngx_int_t
|
|
|
427 ngx_event_module_init(ngx_cycle_t *cycle)
|
|
0
|
428 {
|
|
92
|
429 void ***cf;
|
|
154
|
430 u_char *shared;
|
|
160
|
431 size_t size, cl;
|
|
356
|
432 ngx_shm_t shm;
|
|
516
|
433 ngx_time_t *tp;
|
|
112
|
434 ngx_core_conf_t *ccf;
|
|
356
|
435 ngx_event_conf_t *ecf;
|
|
22
|
436
|
|
|
437 cf = ngx_get_conf(cycle->conf_ctx, ngx_events_module);
|
|
|
438
|
|
|
439 if (cf == NULL) {
|
|
|
440 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
|
|
|
441 "no \"events\" section in configuration");
|
|
|
442 return NGX_ERROR;
|
|
|
443 }
|
|
|
444
|
|
|
445 ecf = (*cf)[ngx_event_core_module.ctx_index];
|
|
|
446
|
|
480
|
447 if (!ngx_test_config && ngx_process <= NGX_PROCESS_MASTER) {
|
|
190
|
448 ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0,
|
|
|
449 "using the \"%s\" event method", ecf->name);
|
|
|
450 }
|
|
22
|
451
|
|
112
|
452 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
|
|
0
|
453
|
|
112
|
454 ngx_timer_resolution = ccf->timer_resolution;
|
|
|
455
|
|
|
456 #if !(NGX_WIN32)
|
|
356
|
457 {
|
|
|
458 ngx_int_t limit;
|
|
|
459 struct rlimit rlmt;
|
|
0
|
460
|
|
92
|
461 if (getrlimit(RLIMIT_NOFILE, &rlmt) == -1) {
|
|
|
462 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
463 "getrlimit(RLIMIT_NOFILE) failed, ignored");
|
|
|
464
|
|
|
465 } else {
|
|
|
466 if (ecf->connections > (ngx_uint_t) rlmt.rlim_cur
|
|
|
467 && (ccf->rlimit_nofile == NGX_CONF_UNSET
|
|
|
468 || ecf->connections > (ngx_uint_t) ccf->rlimit_nofile))
|
|
|
469 {
|
|
|
470 limit = (ccf->rlimit_nofile == NGX_CONF_UNSET) ?
|
|
|
471 (ngx_int_t) rlmt.rlim_cur : ccf->rlimit_nofile;
|
|
|
472
|
|
|
473 ngx_log_error(NGX_LOG_WARN, cycle->log, 0,
|
|
|
474 "%ui worker_connections are more than "
|
|
|
475 "open file resource limit: %i",
|
|
|
476 ecf->connections, limit);
|
|
|
477 }
|
|
|
478 }
|
|
356
|
479 }
|
|
154
|
480 #endif /* !(NGX_WIN32) */
|
|
|
481
|
|
92
|
482
|
|
160
|
483 if (ccf->master == 0) {
|
|
0
|
484 return NGX_OK;
|
|
|
485 }
|
|
|
486
|
|
160
|
487 if (ngx_accept_mutex_ptr) {
|
|
|
488 return NGX_OK;
|
|
|
489 }
|
|
|
490
|
|
|
491
|
|
|
492 /* cl should be equal or bigger than cache line size */
|
|
|
493
|
|
|
494 cl = 128;
|
|
|
495
|
|
|
496 size = cl /* ngx_accept_mutex */
|
|
516
|
497 + cl /* ngx_connection_counter */
|
|
|
498 + cl; /* ngx_temp_number */
|
|
0
|
499
|
|
|
500 #if (NGX_STAT_STUB)
|
|
|
501
|
|
160
|
502 size += cl /* ngx_stat_accepted */
|
|
|
503 + cl /* ngx_stat_handled */
|
|
|
504 + cl /* ngx_stat_requests */
|
|
|
505 + cl /* ngx_stat_active */
|
|
|
506 + cl /* ngx_stat_reading */
|
|
|
507 + cl; /* ngx_stat_writing */
|
|
0
|
508
|
|
|
509 #endif
|
|
|
510
|
|
154
|
511 shm.size = size;
|
|
480
|
512 shm.name.len = sizeof("nginx_shared_zone");
|
|
|
513 shm.name.data = (u_char *) "nginx_shared_zone";
|
|
154
|
514 shm.log = cycle->log;
|
|
|
515
|
|
|
516 if (ngx_shm_alloc(&shm) != NGX_OK) {
|
|
0
|
517 return NGX_ERROR;
|
|
|
518 }
|
|
|
519
|
|
154
|
520 shared = shm.addr;
|
|
|
521
|
|
0
|
522 ngx_accept_mutex_ptr = (ngx_atomic_t *) shared;
|
|
624
|
523 ngx_accept_mutex.spin = (ngx_uint_t) -1;
|
|
160
|
524
|
|
650
|
525 if (ngx_shmtx_create(&ngx_accept_mutex, (ngx_shmtx_sh_t *) shared,
|
|
|
526 cycle->lock_file.data)
|
|
160
|
527 != NGX_OK)
|
|
|
528 {
|
|
|
529 return NGX_ERROR;
|
|
|
530 }
|
|
|
531
|
|
|
532 ngx_connection_counter = (ngx_atomic_t *) (shared + 1 * cl);
|
|
0
|
533
|
|
480
|
534 (void) ngx_atomic_cmp_set(ngx_connection_counter, 0, 1);
|
|
112
|
535
|
|
0
|
536 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
10
|
537 "counter: %p, %d",
|
|
0
|
538 ngx_connection_counter, *ngx_connection_counter);
|
|
|
539
|
|
516
|
540 ngx_temp_number = (ngx_atomic_t *) (shared + 2 * cl);
|
|
|
541
|
|
|
542 tp = ngx_timeofday();
|
|
|
543
|
|
|
544 ngx_random_number = (tp->msec << 16) + ngx_pid;
|
|
|
545
|
|
|
546 #if (NGX_STAT_STUB)
|
|
|
547
|
|
|
548 ngx_stat_accepted = (ngx_atomic_t *) (shared + 3 * cl);
|
|
|
549 ngx_stat_handled = (ngx_atomic_t *) (shared + 4 * cl);
|
|
|
550 ngx_stat_requests = (ngx_atomic_t *) (shared + 5 * cl);
|
|
|
551 ngx_stat_active = (ngx_atomic_t *) (shared + 6 * cl);
|
|
|
552 ngx_stat_reading = (ngx_atomic_t *) (shared + 7 * cl);
|
|
|
553 ngx_stat_writing = (ngx_atomic_t *) (shared + 8 * cl);
|
|
|
554
|
|
|
555 #endif
|
|
|
556
|
|
0
|
557 return NGX_OK;
|
|
|
558 }
|
|
|
559
|
|
|
560
|
|
112
|
561 #if !(NGX_WIN32)
|
|
|
562
|
|
|
563 void
|
|
|
564 ngx_timer_signal_handler(int signo)
|
|
|
565 {
|
|
|
566 ngx_event_timer_alarm = 1;
|
|
|
567
|
|
|
568 #if 1
|
|
|
569 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ngx_cycle->log, 0, "timer signal");
|
|
|
570 #endif
|
|
|
571 }
|
|
|
572
|
|
|
573 #endif
|
|
|
574
|
|
|
575
|
|
58
|
576 static ngx_int_t
|
|
|
577 ngx_event_process_init(ngx_cycle_t *cycle)
|
|
0
|
578 {
|
|
|
579 ngx_uint_t m, i;
|
|
|
580 ngx_event_t *rev, *wev;
|
|
92
|
581 ngx_listening_t *ls;
|
|
|
582 ngx_connection_t *c, *next, *old;
|
|
0
|
583 ngx_core_conf_t *ccf;
|
|
|
584 ngx_event_conf_t *ecf;
|
|
|
585 ngx_event_module_t *module;
|
|
|
586
|
|
|
587 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
|
|
|
588 ecf = ngx_event_get_conf(cycle->conf_ctx, ngx_event_core_module);
|
|
|
589
|
|
258
|
590 if (ccf->master && ccf->worker_processes > 1 && ecf->accept_mutex) {
|
|
160
|
591 ngx_use_accept_mutex = 1;
|
|
0
|
592 ngx_accept_mutex_held = 0;
|
|
|
593 ngx_accept_mutex_delay = ecf->accept_mutex_delay;
|
|
160
|
594
|
|
|
595 } else {
|
|
|
596 ngx_use_accept_mutex = 0;
|
|
0
|
597 }
|
|
|
598
|
|
|
599 #if (NGX_THREADS)
|
|
50
|
600 ngx_posted_events_mutex = ngx_mutex_init(cycle->log, 0);
|
|
|
601 if (ngx_posted_events_mutex == NULL) {
|
|
0
|
602 return NGX_ERROR;
|
|
|
603 }
|
|
|
604 #endif
|
|
|
605
|
|
|
606 if (ngx_event_timer_init(cycle->log) == NGX_ERROR) {
|
|
|
607 return NGX_ERROR;
|
|
|
608 }
|
|
|
609
|
|
|
610 for (m = 0; ngx_modules[m]; m++) {
|
|
|
611 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
612 continue;
|
|
|
613 }
|
|
|
614
|
|
384
|
615 if (ngx_modules[m]->ctx_index != ecf->use) {
|
|
|
616 continue;
|
|
0
|
617 }
|
|
384
|
618
|
|
|
619 module = ngx_modules[m]->ctx;
|
|
|
620
|
|
|
621 if (module->actions.init(cycle, ngx_timer_resolution) != NGX_OK) {
|
|
|
622 /* fatal */
|
|
|
623 exit(2);
|
|
|
624 }
|
|
|
625
|
|
|
626 break;
|
|
0
|
627 }
|
|
|
628
|
|
92
|
629 #if !(NGX_WIN32)
|
|
|
630
|
|
112
|
631 if (ngx_timer_resolution && !(ngx_event_flags & NGX_USE_TIMER_EVENT)) {
|
|
356
|
632 struct sigaction sa;
|
|
|
633 struct itimerval itv;
|
|
112
|
634
|
|
|
635 ngx_memzero(&sa, sizeof(struct sigaction));
|
|
|
636 sa.sa_handler = ngx_timer_signal_handler;
|
|
|
637 sigemptyset(&sa.sa_mask);
|
|
|
638
|
|
|
639 if (sigaction(SIGALRM, &sa, NULL) == -1) {
|
|
|
640 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
641 "sigaction(SIGALRM) failed");
|
|
|
642 return NGX_ERROR;
|
|
|
643 }
|
|
|
644
|
|
|
645 itv.it_interval.tv_sec = ngx_timer_resolution / 1000;
|
|
|
646 itv.it_interval.tv_usec = (ngx_timer_resolution % 1000) * 1000;
|
|
|
647 itv.it_value.tv_sec = ngx_timer_resolution / 1000;
|
|
|
648 itv.it_value.tv_usec = (ngx_timer_resolution % 1000 ) * 1000;
|
|
|
649
|
|
|
650 if (setitimer(ITIMER_REAL, &itv, NULL) == -1) {
|
|
|
651 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
652 "setitimer() failed");
|
|
126
|
653 }
|
|
112
|
654 }
|
|
|
655
|
|
92
|
656 if (ngx_event_flags & NGX_USE_FD_EVENT) {
|
|
356
|
657 struct rlimit rlmt;
|
|
92
|
658
|
|
|
659 if (getrlimit(RLIMIT_NOFILE, &rlmt) == -1) {
|
|
|
660 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
661 "getrlimit(RLIMIT_NOFILE) failed");
|
|
|
662 return NGX_ERROR;
|
|
|
663 }
|
|
|
664
|
|
|
665 cycle->files_n = (ngx_uint_t) rlmt.rlim_cur;
|
|
|
666
|
|
|
667 cycle->files = ngx_calloc(sizeof(ngx_connection_t *) * cycle->files_n,
|
|
|
668 cycle->log);
|
|
|
669 if (cycle->files == NULL) {
|
|
|
670 return NGX_ERROR;
|
|
|
671 }
|
|
|
672 }
|
|
|
673
|
|
|
674 #endif
|
|
|
675
|
|
384
|
676 cycle->connections =
|
|
|
677 ngx_alloc(sizeof(ngx_connection_t) * cycle->connection_n, cycle->log);
|
|
110
|
678 if (cycle->connections == NULL) {
|
|
0
|
679 return NGX_ERROR;
|
|
|
680 }
|
|
|
681
|
|
110
|
682 c = cycle->connections;
|
|
0
|
683
|
|
384
|
684 cycle->read_events = ngx_alloc(sizeof(ngx_event_t) * cycle->connection_n,
|
|
0
|
685 cycle->log);
|
|
110
|
686 if (cycle->read_events == NULL) {
|
|
0
|
687 return NGX_ERROR;
|
|
|
688 }
|
|
|
689
|
|
110
|
690 rev = cycle->read_events;
|
|
0
|
691 for (i = 0; i < cycle->connection_n; i++) {
|
|
|
692 rev[i].closed = 1;
|
|
30
|
693 rev[i].instance = 1;
|
|
0
|
694 #if (NGX_THREADS)
|
|
|
695 rev[i].lock = &c[i].lock;
|
|
|
696 rev[i].own_lock = &c[i].lock;
|
|
|
697 #endif
|
|
|
698 }
|
|
|
699
|
|
384
|
700 cycle->write_events = ngx_alloc(sizeof(ngx_event_t) * cycle->connection_n,
|
|
30
|
701 cycle->log);
|
|
110
|
702 if (cycle->write_events == NULL) {
|
|
0
|
703 return NGX_ERROR;
|
|
|
704 }
|
|
|
705
|
|
110
|
706 wev = cycle->write_events;
|
|
0
|
707 for (i = 0; i < cycle->connection_n; i++) {
|
|
|
708 wev[i].closed = 1;
|
|
|
709 #if (NGX_THREADS)
|
|
|
710 wev[i].lock = &c[i].lock;
|
|
|
711 wev[i].own_lock = &c[i].lock;
|
|
|
712 #endif
|
|
|
713 }
|
|
|
714
|
|
92
|
715 i = cycle->connection_n;
|
|
|
716 next = NULL;
|
|
|
717
|
|
|
718 do {
|
|
|
719 i--;
|
|
|
720
|
|
|
721 c[i].data = next;
|
|
110
|
722 c[i].read = &cycle->read_events[i];
|
|
|
723 c[i].write = &cycle->write_events[i];
|
|
92
|
724 c[i].fd = (ngx_socket_t) -1;
|
|
|
725
|
|
|
726 next = &c[i];
|
|
|
727
|
|
|
728 #if (NGX_THREADS)
|
|
|
729 c[i].lock = 0;
|
|
|
730 #endif
|
|
|
731 } while (i);
|
|
|
732
|
|
|
733 cycle->free_connections = next;
|
|
384
|
734 cycle->free_connection_n = cycle->connection_n;
|
|
92
|
735
|
|
0
|
736 /* for each listening socket */
|
|
|
737
|
|
92
|
738 ls = cycle->listening.elts;
|
|
0
|
739 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
740
|
|
92
|
741 c = ngx_get_connection(ls[i].fd, cycle->log);
|
|
0
|
742
|
|
92
|
743 if (c == NULL) {
|
|
|
744 return NGX_ERROR;
|
|
|
745 }
|
|
0
|
746
|
|
92
|
747 c->log = &ls[i].log;
|
|
|
748
|
|
|
749 c->listening = &ls[i];
|
|
|
750 ls[i].connection = c;
|
|
|
751
|
|
110
|
752 rev = c->read;
|
|
0
|
753
|
|
|
754 rev->log = c->log;
|
|
|
755 rev->accept = 1;
|
|
|
756
|
|
18
|
757 #if (NGX_HAVE_DEFERRED_ACCEPT)
|
|
92
|
758 rev->deferred_accept = ls[i].deferred_accept;
|
|
0
|
759 #endif
|
|
|
760
|
|
|
761 if (!(ngx_event_flags & NGX_USE_IOCP_EVENT)) {
|
|
92
|
762 if (ls[i].previous) {
|
|
0
|
763
|
|
|
764 /*
|
|
|
765 * delete the old accept events that were bound to
|
|
|
766 * the old cycle read events array
|
|
|
767 */
|
|
|
768
|
|
92
|
769 old = ls[i].previous->connection;
|
|
|
770
|
|
|
771 if (ngx_del_event(old->read, NGX_READ_EVENT, NGX_CLOSE_EVENT)
|
|
|
772 == NGX_ERROR)
|
|
0
|
773 {
|
|
|
774 return NGX_ERROR;
|
|
|
775 }
|
|
|
776
|
|
92
|
777 old->fd = (ngx_socket_t) -1;
|
|
0
|
778 }
|
|
|
779 }
|
|
|
780
|
|
10
|
781 #if (NGX_WIN32)
|
|
0
|
782
|
|
|
783 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
|
|
356
|
784 ngx_iocp_conf_t *iocpcf;
|
|
|
785
|
|
58
|
786 rev->handler = ngx_event_acceptex;
|
|
0
|
787
|
|
484
|
788 if (ngx_use_accept_mutex) {
|
|
|
789 continue;
|
|
|
790 }
|
|
|
791
|
|
0
|
792 if (ngx_add_event(rev, 0, NGX_IOCP_ACCEPT) == NGX_ERROR) {
|
|
|
793 return NGX_ERROR;
|
|
|
794 }
|
|
|
795
|
|
92
|
796 ls[i].log.handler = ngx_acceptex_log_error;
|
|
|
797
|
|
0
|
798 iocpcf = ngx_event_get_conf(cycle->conf_ctx, ngx_iocp_module);
|
|
92
|
799 if (ngx_event_post_acceptex(&ls[i], iocpcf->post_acceptex)
|
|
|
800 == NGX_ERROR)
|
|
0
|
801 {
|
|
|
802 return NGX_ERROR;
|
|
|
803 }
|
|
|
804
|
|
|
805 } else {
|
|
58
|
806 rev->handler = ngx_event_accept;
|
|
10
|
807
|
|
484
|
808 if (ngx_use_accept_mutex) {
|
|
|
809 continue;
|
|
|
810 }
|
|
|
811
|
|
0
|
812 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
813 return NGX_ERROR;
|
|
|
814 }
|
|
|
815 }
|
|
|
816
|
|
|
817 #else
|
|
|
818
|
|
58
|
819 rev->handler = ngx_event_accept;
|
|
0
|
820
|
|
160
|
821 if (ngx_use_accept_mutex) {
|
|
0
|
822 continue;
|
|
|
823 }
|
|
|
824
|
|
|
825 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
|
|
|
826 if (ngx_add_conn(c) == NGX_ERROR) {
|
|
|
827 return NGX_ERROR;
|
|
|
828 }
|
|
|
829
|
|
|
830 } else {
|
|
|
831 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
832 return NGX_ERROR;
|
|
|
833 }
|
|
|
834 }
|
|
|
835
|
|
|
836 #endif
|
|
92
|
837
|
|
0
|
838 }
|
|
|
839
|
|
|
840 return NGX_OK;
|
|
|
841 }
|
|
|
842
|
|
|
843
|
|
58
|
844 ngx_int_t
|
|
|
845 ngx_send_lowat(ngx_connection_t *c, size_t lowat)
|
|
2
|
846 {
|
|
|
847 int sndlowat;
|
|
|
848
|
|
4
|
849 #if (NGX_HAVE_LOWAT_EVENT)
|
|
2
|
850
|
|
4
|
851 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
2
|
852 c->write->available = lowat;
|
|
|
853 return NGX_OK;
|
|
|
854 }
|
|
|
855
|
|
|
856 #endif
|
|
126
|
857
|
|
2
|
858 if (lowat == 0 || c->sndlowat) {
|
|
|
859 return NGX_OK;
|
|
|
860 }
|
|
|
861
|
|
|
862 sndlowat = (int) lowat;
|
|
|
863
|
|
|
864 if (setsockopt(c->fd, SOL_SOCKET, SO_SNDLOWAT,
|
|
282
|
865 (const void *) &sndlowat, sizeof(int))
|
|
|
866 == -1)
|
|
2
|
867 {
|
|
|
868 ngx_connection_error(c, ngx_socket_errno,
|
|
|
869 "setsockopt(SO_SNDLOWAT) failed");
|
|
|
870 return NGX_ERROR;
|
|
|
871 }
|
|
|
872
|
|
|
873 c->sndlowat = 1;
|
|
|
874
|
|
|
875 return NGX_OK;
|
|
|
876 }
|
|
|
877
|
|
|
878
|
|
58
|
879 static char *
|
|
|
880 ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
881 {
|
|
50
|
882 char *rv;
|
|
0
|
883 void ***ctx;
|
|
50
|
884 ngx_uint_t i;
|
|
0
|
885 ngx_conf_t pcf;
|
|
50
|
886 ngx_event_module_t *m;
|
|
0
|
887
|
|
|
888 /* count the number of the event modules and set up their indices */
|
|
|
889
|
|
|
890 ngx_event_max_module = 0;
|
|
50
|
891 for (i = 0; ngx_modules[i]; i++) {
|
|
|
892 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
|
0
|
893 continue;
|
|
|
894 }
|
|
|
895
|
|
50
|
896 ngx_modules[i]->ctx_index = ngx_event_max_module++;
|
|
0
|
897 }
|
|
|
898
|
|
50
|
899 ctx = ngx_pcalloc(cf->pool, sizeof(void *));
|
|
|
900 if (ctx == NULL) {
|
|
|
901 return NGX_CONF_ERROR;
|
|
|
902 }
|
|
0
|
903
|
|
50
|
904 *ctx = ngx_pcalloc(cf->pool, ngx_event_max_module * sizeof(void *));
|
|
|
905 if (*ctx == NULL) {
|
|
|
906 return NGX_CONF_ERROR;
|
|
|
907 }
|
|
0
|
908
|
|
|
909 *(void **) conf = ctx;
|
|
|
910
|
|
50
|
911 for (i = 0; ngx_modules[i]; i++) {
|
|
|
912 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
|
0
|
913 continue;
|
|
|
914 }
|
|
|
915
|
|
50
|
916 m = ngx_modules[i]->ctx;
|
|
0
|
917
|
|
50
|
918 if (m->create_conf) {
|
|
|
919 (*ctx)[ngx_modules[i]->ctx_index] = m->create_conf(cf->cycle);
|
|
|
920 if ((*ctx)[ngx_modules[i]->ctx_index] == NULL) {
|
|
|
921 return NGX_CONF_ERROR;
|
|
|
922 }
|
|
0
|
923 }
|
|
|
924 }
|
|
|
925
|
|
|
926 pcf = *cf;
|
|
|
927 cf->ctx = ctx;
|
|
|
928 cf->module_type = NGX_EVENT_MODULE;
|
|
|
929 cf->cmd_type = NGX_EVENT_CONF;
|
|
50
|
930
|
|
0
|
931 rv = ngx_conf_parse(cf, NULL);
|
|
50
|
932
|
|
0
|
933 *cf = pcf;
|
|
|
934
|
|
|
935 if (rv != NGX_CONF_OK)
|
|
|
936 return rv;
|
|
|
937
|
|
50
|
938 for (i = 0; ngx_modules[i]; i++) {
|
|
|
939 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
|
0
|
940 continue;
|
|
|
941 }
|
|
|
942
|
|
50
|
943 m = ngx_modules[i]->ctx;
|
|
0
|
944
|
|
50
|
945 if (m->init_conf) {
|
|
|
946 rv = m->init_conf(cf->cycle, (*ctx)[ngx_modules[i]->ctx_index]);
|
|
0
|
947 if (rv != NGX_CONF_OK) {
|
|
|
948 return rv;
|
|
|
949 }
|
|
|
950 }
|
|
|
951 }
|
|
|
952
|
|
|
953 return NGX_CONF_OK;
|
|
|
954 }
|
|
|
955
|
|
|
956
|
|
58
|
957 static char *
|
|
|
958 ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
959 {
|
|
|
960 ngx_event_conf_t *ecf = conf;
|
|
|
961
|
|
|
962 ngx_str_t *value;
|
|
|
963
|
|
|
964 if (ecf->connections != NGX_CONF_UNSET_UINT) {
|
|
378
|
965 return "is duplicate";
|
|
0
|
966 }
|
|
|
967
|
|
130
|
968 if (ngx_strcmp(cmd->name.data, "connections") == 0) {
|
|
|
969 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
970 "the \"connections\" directive is deprecated, "
|
|
|
971 "use the \"worker_connections\" directive instead");
|
|
|
972 }
|
|
|
973
|
|
0
|
974 value = cf->args->elts;
|
|
|
975 ecf->connections = ngx_atoi(value[1].data, value[1].len);
|
|
|
976 if (ecf->connections == (ngx_uint_t) NGX_ERROR) {
|
|
|
977 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
978 "invalid number \"%V\"", &value[1]);
|
|
0
|
979
|
|
|
980 return NGX_CONF_ERROR;
|
|
|
981 }
|
|
|
982
|
|
|
983 cf->cycle->connection_n = ecf->connections;
|
|
|
984
|
|
|
985 return NGX_CONF_OK;
|
|
|
986 }
|
|
|
987
|
|
|
988
|
|
58
|
989 static char *
|
|
|
990 ngx_event_use(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
991 {
|
|
|
992 ngx_event_conf_t *ecf = conf;
|
|
|
993
|
|
|
994 ngx_int_t m;
|
|
|
995 ngx_str_t *value;
|
|
|
996 ngx_event_conf_t *old_ecf;
|
|
|
997 ngx_event_module_t *module;
|
|
|
998
|
|
|
999 if (ecf->use != NGX_CONF_UNSET_UINT) {
|
|
378
|
1000 return "is duplicate";
|
|
0
|
1001 }
|
|
|
1002
|
|
|
1003 value = cf->args->elts;
|
|
|
1004
|
|
|
1005 if (cf->cycle->old_cycle->conf_ctx) {
|
|
|
1006 old_ecf = ngx_event_get_conf(cf->cycle->old_cycle->conf_ctx,
|
|
|
1007 ngx_event_core_module);
|
|
|
1008 } else {
|
|
|
1009 old_ecf = NULL;
|
|
|
1010 }
|
|
|
1011
|
|
|
1012
|
|
|
1013 for (m = 0; ngx_modules[m]; m++) {
|
|
|
1014 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
1015 continue;
|
|
|
1016 }
|
|
|
1017
|
|
|
1018 module = ngx_modules[m]->ctx;
|
|
|
1019 if (module->name->len == value[1].len) {
|
|
|
1020 if (ngx_strcmp(module->name->data, value[1].data) == 0) {
|
|
|
1021 ecf->use = ngx_modules[m]->ctx_index;
|
|
|
1022 ecf->name = module->name->data;
|
|
|
1023
|
|
|
1024 if (ngx_process == NGX_PROCESS_SINGLE
|
|
|
1025 && old_ecf
|
|
|
1026 && old_ecf->use != ecf->use)
|
|
|
1027 {
|
|
|
1028 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
16
|
1029 "when the server runs without a master process "
|
|
|
1030 "the \"%V\" event type must be the same as "
|
|
|
1031 "in previous configuration - \"%s\" "
|
|
640
|
1032 "and it cannot be changed on the fly, "
|
|
16
|
1033 "to change it you need to stop server "
|
|
|
1034 "and start it again",
|
|
|
1035 &value[1], old_ecf->name);
|
|
0
|
1036
|
|
|
1037 return NGX_CONF_ERROR;
|
|
|
1038 }
|
|
|
1039
|
|
|
1040 return NGX_CONF_OK;
|
|
|
1041 }
|
|
|
1042 }
|
|
|
1043 }
|
|
|
1044
|
|
|
1045 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
1046 "invalid event type \"%V\"", &value[1]);
|
|
0
|
1047
|
|
|
1048 return NGX_CONF_ERROR;
|
|
|
1049 }
|
|
|
1050
|
|
|
1051
|
|
58
|
1052 static char *
|
|
|
1053 ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
1054 {
|
|
|
1055 #if (NGX_DEBUG)
|
|
|
1056 ngx_event_conf_t *ecf = conf;
|
|
|
1057
|
|
326
|
1058 ngx_int_t rc;
|
|
|
1059 ngx_str_t *value;
|
|
214
|
1060 ngx_event_debug_t *dc;
|
|
|
1061 struct hostent *h;
|
|
454
|
1062 ngx_cidr_t cidr;
|
|
0
|
1063
|
|
|
1064 value = cf->args->elts;
|
|
|
1065
|
|
214
|
1066 dc = ngx_array_push(&ecf->debug_connection);
|
|
|
1067 if (dc == NULL) {
|
|
0
|
1068 return NGX_CONF_ERROR;
|
|
|
1069 }
|
|
|
1070
|
|
454
|
1071 rc = ngx_ptocidr(&value[1], &cidr);
|
|
326
|
1072
|
|
|
1073 if (rc == NGX_DONE) {
|
|
|
1074 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
1075 "low address bits of %V are meaningless", &value[1]);
|
|
|
1076 rc = NGX_OK;
|
|
|
1077 }
|
|
|
1078
|
|
|
1079 if (rc == NGX_OK) {
|
|
454
|
1080
|
|
|
1081 /* AF_INET only */
|
|
|
1082
|
|
|
1083 if (cidr.family != AF_INET) {
|
|
|
1084 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1085 "\"debug_connection\" supports IPv4 only");
|
|
|
1086 return NGX_CONF_ERROR;
|
|
|
1087 }
|
|
|
1088
|
|
|
1089 dc->mask = cidr.u.in.mask;
|
|
|
1090 dc->addr = cidr.u.in.addr;
|
|
|
1091
|
|
326
|
1092 return NGX_CONF_OK;
|
|
0
|
1093 }
|
|
|
1094
|
|
|
1095 h = gethostbyname((char *) value[1].data);
|
|
|
1096
|
|
|
1097 if (h == NULL || h->h_addr_list[0] == NULL) {
|
|
|
1098 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
1099 "host \"%s\" not found", value[1].data);
|
|
0
|
1100 return NGX_CONF_ERROR;
|
|
|
1101 }
|
|
|
1102
|
|
214
|
1103 dc->mask = 0xffffffff;
|
|
|
1104 dc->addr = *(in_addr_t *)(h->h_addr_list[0]);
|
|
0
|
1105
|
|
|
1106 #else
|
|
|
1107
|
|
|
1108 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
1109 "\"debug_connection\" is ignored, you need to rebuild "
|
|
|
1110 "nginx using --with-debug option to enable it");
|
|
|
1111
|
|
|
1112 #endif
|
|
|
1113
|
|
326
|
1114 return NGX_CONF_OK;
|
|
0
|
1115 }
|
|
|
1116
|
|
|
1117
|
|
58
|
1118 static void *
|
|
|
1119 ngx_event_create_conf(ngx_cycle_t *cycle)
|
|
0
|
1120 {
|
|
|
1121 ngx_event_conf_t *ecf;
|
|
|
1122
|
|
50
|
1123 ecf = ngx_palloc(cycle->pool, sizeof(ngx_event_conf_t));
|
|
|
1124 if (ecf == NULL) {
|
|
496
|
1125 return NULL;
|
|
50
|
1126 }
|
|
0
|
1127
|
|
|
1128 ecf->connections = NGX_CONF_UNSET_UINT;
|
|
|
1129 ecf->use = NGX_CONF_UNSET_UINT;
|
|
|
1130 ecf->multi_accept = NGX_CONF_UNSET;
|
|
|
1131 ecf->accept_mutex = NGX_CONF_UNSET;
|
|
|
1132 ecf->accept_mutex_delay = NGX_CONF_UNSET_MSEC;
|
|
|
1133 ecf->name = (void *) NGX_CONF_UNSET;
|
|
|
1134
|
|
|
1135 #if (NGX_DEBUG)
|
|
50
|
1136
|
|
|
1137 if (ngx_array_init(&ecf->debug_connection, cycle->pool, 4,
|
|
214
|
1138 sizeof(ngx_event_debug_t)) == NGX_ERROR)
|
|
50
|
1139 {
|
|
496
|
1140 return NULL;
|
|
50
|
1141 }
|
|
|
1142
|
|
0
|
1143 #endif
|
|
|
1144
|
|
|
1145 return ecf;
|
|
|
1146 }
|
|
|
1147
|
|
|
1148
|
|
58
|
1149 static char *
|
|
|
1150 ngx_event_init_conf(ngx_cycle_t *cycle, void *conf)
|
|
0
|
1151 {
|
|
|
1152 ngx_event_conf_t *ecf = conf;
|
|
16
|
1153
|
|
50
|
1154 #if (NGX_HAVE_EPOLL) && !(NGX_TEST_BUILD_EPOLL)
|
|
|
1155 int fd;
|
|
|
1156 #endif
|
|
|
1157 #if (NGX_HAVE_RTSIG)
|
|
|
1158 ngx_uint_t rtsig;
|
|
122
|
1159 ngx_core_conf_t *ccf;
|
|
50
|
1160 #endif
|
|
384
|
1161 ngx_int_t i;
|
|
16
|
1162 ngx_module_t *module;
|
|
|
1163 ngx_event_module_t *event_module;
|
|
|
1164
|
|
|
1165 module = NULL;
|
|
|
1166
|
|
18
|
1167 #if (NGX_HAVE_EPOLL) && !(NGX_TEST_BUILD_EPOLL)
|
|
16
|
1168
|
|
|
1169 fd = epoll_create(100);
|
|
|
1170
|
|
|
1171 if (fd != -1) {
|
|
|
1172 close(fd);
|
|
|
1173 module = &ngx_epoll_module;
|
|
|
1174
|
|
|
1175 } else if (ngx_errno != NGX_ENOSYS) {
|
|
|
1176 module = &ngx_epoll_module;
|
|
|
1177 }
|
|
|
1178
|
|
|
1179 #endif
|
|
|
1180
|
|
18
|
1181 #if (NGX_HAVE_RTSIG)
|
|
16
|
1182
|
|
|
1183 if (module == NULL) {
|
|
|
1184 module = &ngx_rtsig_module;
|
|
|
1185 rtsig = 1;
|
|
50
|
1186
|
|
|
1187 } else {
|
|
|
1188 rtsig = 0;
|
|
16
|
1189 }
|
|
|
1190
|
|
|
1191 #endif
|
|
|
1192
|
|
18
|
1193 #if (NGX_HAVE_DEVPOLL)
|
|
16
|
1194
|
|
|
1195 module = &ngx_devpoll_module;
|
|
|
1196
|
|
0
|
1197 #endif
|
|
|
1198
|
|
18
|
1199 #if (NGX_HAVE_KQUEUE)
|
|
0
|
1200
|
|
16
|
1201 module = &ngx_kqueue_module;
|
|
0
|
1202
|
|
16
|
1203 #endif
|
|
0
|
1204
|
|
18
|
1205 #if (NGX_HAVE_SELECT)
|
|
0
|
1206
|
|
16
|
1207 if (module == NULL) {
|
|
|
1208 module = &ngx_select_module;
|
|
|
1209 }
|
|
|
1210
|
|
0
|
1211 #endif
|
|
|
1212
|
|
16
|
1213 if (module == NULL) {
|
|
|
1214 for (i = 0; ngx_modules[i]; i++) {
|
|
384
|
1215
|
|
|
1216 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
|
|
1217 continue;
|
|
|
1218 }
|
|
|
1219
|
|
|
1220 event_module = ngx_modules[i]->ctx;
|
|
0
|
1221
|
|
384
|
1222 if (ngx_strcmp(event_module->name->data, event_core_name.data) == 0)
|
|
|
1223 {
|
|
|
1224 continue;
|
|
|
1225 }
|
|
0
|
1226
|
|
384
|
1227 module = ngx_modules[i];
|
|
|
1228 break;
|
|
0
|
1229 }
|
|
|
1230 }
|
|
|
1231
|
|
16
|
1232 if (module == NULL) {
|
|
0
|
1233 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0, "no events module found");
|
|
|
1234 return NGX_CONF_ERROR;
|
|
|
1235 }
|
|
|
1236
|
|
384
|
1237 ngx_conf_init_uint_value(ecf->connections, DEFAULT_CONNECTIONS);
|
|
16
|
1238 cycle->connection_n = ecf->connections;
|
|
0
|
1239
|
|
212
|
1240 ngx_conf_init_uint_value(ecf->use, module->ctx_index);
|
|
0
|
1241
|
|
16
|
1242 event_module = module->ctx;
|
|
|
1243 ngx_conf_init_ptr_value(ecf->name, event_module->name->data);
|
|
0
|
1244
|
|
|
1245 ngx_conf_init_value(ecf->multi_accept, 0);
|
|
|
1246 ngx_conf_init_value(ecf->accept_mutex, 1);
|
|
|
1247 ngx_conf_init_msec_value(ecf->accept_mutex_delay, 500);
|
|
|
1248
|
|
16
|
1249
|
|
50
|
1250 #if (NGX_HAVE_RTSIG)
|
|
|
1251
|
|
|
1252 if (!rtsig) {
|
|
|
1253 return NGX_CONF_OK;
|
|
|
1254 }
|
|
|
1255
|
|
|
1256 if (ecf->accept_mutex) {
|
|
16
|
1257 return NGX_CONF_OK;
|
|
0
|
1258 }
|
|
16
|
1259
|
|
|
1260 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
|
|
0
|
1261
|
|
16
|
1262 if (ccf->worker_processes == 0) {
|
|
|
1263 return NGX_CONF_OK;
|
|
|
1264 }
|
|
|
1265
|
|
|
1266 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
|
|
|
1267 "the \"rtsig\" method requires \"accept_mutex\" to be on");
|
|
|
1268
|
|
|
1269 return NGX_CONF_ERROR;
|
|
122
|
1270
|
|
|
1271 #else
|
|
|
1272
|
|
|
1273 return NGX_CONF_OK;
|
|
|
1274
|
|
|
1275 #endif
|
|
0
|
1276 }
|
