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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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672
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24 static char *ngx_event_init_conf(ngx_cycle_t *cycle, void *conf);
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0
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25 static ngx_int_t ngx_event_module_init(ngx_cycle_t *cycle);
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26 static ngx_int_t ngx_event_process_init(ngx_cycle_t *cycle);
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27 static char *ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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28
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29 static char *ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd,
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58
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30 void *conf);
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0
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31 static char *ngx_event_use(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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32 static char *ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd,
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58
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33 void *conf);
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0
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34
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672
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35 static void *ngx_event_core_create_conf(ngx_cycle_t *cycle);
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36 static char *ngx_event_core_init_conf(ngx_cycle_t *cycle, void *conf);
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0
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37
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38
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112
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39 static ngx_uint_t ngx_timer_resolution;
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40 sig_atomic_t ngx_event_timer_alarm;
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41
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44
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42 static ngx_uint_t ngx_event_max_module;
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0
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43
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44
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44 ngx_uint_t ngx_event_flags;
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45 ngx_event_actions_t ngx_event_actions;
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0
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46
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47
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516
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48 static ngx_atomic_t connection_counter = 1;
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42
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49 ngx_atomic_t *ngx_connection_counter = &connection_counter;
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0
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50
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51
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42
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52 ngx_atomic_t *ngx_accept_mutex_ptr;
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160
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53 ngx_shmtx_t ngx_accept_mutex;
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54 ngx_uint_t ngx_use_accept_mutex;
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236
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55 ngx_uint_t ngx_accept_events;
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44
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56 ngx_uint_t ngx_accept_mutex_held;
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57 ngx_msec_t ngx_accept_mutex_delay;
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58 ngx_int_t ngx_accept_disabled;
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110
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59 ngx_file_t ngx_accept_mutex_lock_file;
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0
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60
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61
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62 #if (NGX_STAT_STUB)
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63
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64 ngx_atomic_t ngx_stat_accepted0;
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65 ngx_atomic_t *ngx_stat_accepted = &ngx_stat_accepted0;
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44
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66 ngx_atomic_t ngx_stat_handled0;
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67 ngx_atomic_t *ngx_stat_handled = &ngx_stat_handled0;
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0
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68 ngx_atomic_t ngx_stat_requests0;
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69 ngx_atomic_t *ngx_stat_requests = &ngx_stat_requests0;
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70 ngx_atomic_t ngx_stat_active0;
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71 ngx_atomic_t *ngx_stat_active = &ngx_stat_active0;
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72 ngx_atomic_t ngx_stat_reading0;
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73 ngx_atomic_t *ngx_stat_reading = &ngx_stat_reading0;
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74 ngx_atomic_t ngx_stat_writing0;
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44
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75 ngx_atomic_t *ngx_stat_writing = &ngx_stat_writing0;
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0
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76
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77 #endif
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78
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79
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80
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81 static ngx_command_t ngx_events_commands[] = {
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82
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83 { ngx_string("events"),
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84 NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
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85 ngx_events_block,
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86 0,
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87 0,
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88 NULL },
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89
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90 ngx_null_command
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91 };
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92
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126
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93
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0
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94 static ngx_core_module_t ngx_events_module_ctx = {
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95 ngx_string("events"),
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96 NULL,
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672
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97 ngx_event_init_conf
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126
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98 };
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0
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99
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100
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101 ngx_module_t ngx_events_module = {
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58
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102 NGX_MODULE_V1,
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0
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103 &ngx_events_module_ctx, /* module context */
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104 ngx_events_commands, /* module directives */
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105 NGX_CORE_MODULE, /* module type */
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90
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106 NULL, /* init master */
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0
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107 NULL, /* init module */
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90
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108 NULL, /* init process */
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109 NULL, /* init thread */
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110 NULL, /* exit thread */
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111 NULL, /* exit process */
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112 NULL, /* exit master */
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113 NGX_MODULE_V1_PADDING
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0
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114 };
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115
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116
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117 static ngx_str_t event_core_name = ngx_string("event_core");
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118
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119
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120 static ngx_command_t ngx_event_core_commands[] = {
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121
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92
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122 { ngx_string("worker_connections"),
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123 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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124 ngx_event_connections,
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125 0,
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126 0,
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127 NULL },
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128
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0
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129 { ngx_string("connections"),
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130 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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131 ngx_event_connections,
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132 0,
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133 0,
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134 NULL },
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135
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136 { ngx_string("use"),
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137 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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138 ngx_event_use,
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139 0,
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140 0,
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141 NULL },
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142
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143 { ngx_string("multi_accept"),
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216
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144 NGX_EVENT_CONF|NGX_CONF_FLAG,
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0
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145 ngx_conf_set_flag_slot,
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146 0,
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147 offsetof(ngx_event_conf_t, multi_accept),
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148 NULL },
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149
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150 { ngx_string("accept_mutex"),
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216
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151 NGX_EVENT_CONF|NGX_CONF_FLAG,
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0
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152 ngx_conf_set_flag_slot,
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153 0,
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154 offsetof(ngx_event_conf_t, accept_mutex),
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160
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155 NULL },
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0
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156
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157 { ngx_string("accept_mutex_delay"),
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158 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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159 ngx_conf_set_msec_slot,
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160 0,
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161 offsetof(ngx_event_conf_t, accept_mutex_delay),
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162 NULL },
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163
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164 { ngx_string("debug_connection"),
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165 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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166 ngx_event_debug_connection,
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167 0,
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168 0,
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169 NULL },
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170
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171 ngx_null_command
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172 };
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173
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174
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175 ngx_event_module_t ngx_event_core_module_ctx = {
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176 &event_core_name,
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672
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177 ngx_event_core_create_conf, /* create configuration */
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178 ngx_event_core_init_conf, /* init configuration */
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0
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179
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180 { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }
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181 };
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182
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183
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184 ngx_module_t ngx_event_core_module = {
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58
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185 NGX_MODULE_V1,
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0
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186 &ngx_event_core_module_ctx, /* module context */
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187 ngx_event_core_commands, /* module directives */
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188 NGX_EVENT_MODULE, /* module type */
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90
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189 NULL, /* init master */
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0
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190 ngx_event_module_init, /* init module */
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90
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191 ngx_event_process_init, /* init process */
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192 NULL, /* init thread */
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193 NULL, /* exit thread */
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194 NULL, /* exit process */
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195 NULL, /* exit master */
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196 NGX_MODULE_V1_PADDING
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0
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197 };
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198
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199
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112
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200 void
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201 ngx_process_events_and_timers(ngx_cycle_t *cycle)
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202 {
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203 ngx_uint_t flags;
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116
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204 ngx_msec_t timer, delta;
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112
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205
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206 if (ngx_timer_resolution) {
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207 timer = NGX_TIMER_INFINITE;
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208 flags = 0;
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209
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210 } else {
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211 timer = ngx_event_find_timer();
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212 flags = NGX_UPDATE_TIME;
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213
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214 #if (NGX_THREADS)
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215
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216 if (timer == NGX_TIMER_INFINITE || timer > 500) {
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217 timer = 500;
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218 }
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219
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220 #endif
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221 }
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222
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160
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223 if (ngx_use_accept_mutex) {
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112
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224 if (ngx_accept_disabled > 0) {
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225 ngx_accept_disabled--;
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226
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227 } else {
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228 if (ngx_trylock_accept_mutex(cycle) == NGX_ERROR) {
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229 return;
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230 }
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231
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232 if (ngx_accept_mutex_held) {
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233 flags |= NGX_POST_EVENTS;
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234
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235 } else {
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236 if (timer == NGX_TIMER_INFINITE
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237 || timer > ngx_accept_mutex_delay)
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238 {
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239 timer = ngx_accept_mutex_delay;
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240 }
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241 }
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242 }
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243 }
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244
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116
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245 delta = ngx_current_msec;
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246
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112
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247 (void) ngx_process_events(cycle, timer, flags);
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248
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116
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249 delta = ngx_current_msec - delta;
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250
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251 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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252 "timer delta: %M", delta);
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253
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112
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254 if (ngx_posted_accept_events) {
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255 ngx_event_process_posted(cycle, &ngx_posted_accept_events);
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256 }
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257
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258 if (ngx_accept_mutex_held) {
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160
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259 ngx_shmtx_unlock(&ngx_accept_mutex);
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112
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260 }
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261
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122
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262 if (delta) {
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263 ngx_event_expire_timers();
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264 }
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265
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112
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266 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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267 "posted events %p", ngx_posted_events);
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268
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269 if (ngx_posted_events) {
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270 if (ngx_threaded) {
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271 ngx_wakeup_worker_thread(cycle);
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272
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273 } else {
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274 ngx_event_process_posted(cycle, &ngx_posted_events);
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275 }
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276 }
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277 }
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278
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279
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58
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280 ngx_int_t
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324
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281 ngx_handle_read_event(ngx_event_t *rev, ngx_uint_t flags)
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58
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282 {
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283 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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126
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284
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58
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285 /* kqueue, epoll */
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286
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287 if (!rev->active && !rev->ready) {
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288 if (ngx_add_event(rev, NGX_READ_EVENT, NGX_CLEAR_EVENT)
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289 == NGX_ERROR)
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290 {
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291 return NGX_ERROR;
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292 }
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293 }
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126
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294
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58
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295 return NGX_OK;
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296
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297 } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
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298
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299 /* select, poll, /dev/poll */
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300
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301 if (!rev->active && !rev->ready) {
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302 if (ngx_add_event(rev, NGX_READ_EVENT, NGX_LEVEL_EVENT)
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303 == NGX_ERROR)
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304 {
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305 return NGX_ERROR;
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306 }
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307
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308 return NGX_OK;
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309 }
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310
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311 if (rev->active && (rev->ready || (flags & NGX_CLOSE_EVENT))) {
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312 if (ngx_del_event(rev, NGX_READ_EVENT, NGX_LEVEL_EVENT | flags)
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313 == NGX_ERROR)
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314 {
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315 return NGX_ERROR;
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316 }
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317
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318 return NGX_OK;
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319 }
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320
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236
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321 } else if (ngx_event_flags & NGX_USE_EVENTPORT_EVENT) {
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58
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322
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323 /* event ports */
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324
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236
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325 if (!rev->active && !rev->ready) {
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326 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
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58
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327 return NGX_ERROR;
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328 }
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236
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329
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330 return NGX_OK;
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58
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331 }
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126
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332
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236
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333 if (rev->oneshot && !rev->ready) {
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334 if (ngx_del_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
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335 return NGX_ERROR;
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336 }
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337
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338 return NGX_OK;
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339 }
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58
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340 }
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341
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342 /* aio, iocp, rtsig */
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343
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344 return NGX_OK;
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345 }
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346
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347
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348 ngx_int_t
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349 ngx_handle_write_event(ngx_event_t *wev, size_t lowat)
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350 {
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351 ngx_connection_t *c;
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352
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353 if (lowat) {
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236
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354 c = wev->data;
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58
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355
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356 if (ngx_send_lowat(c, lowat) == NGX_ERROR) {
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357 return NGX_ERROR;
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358 }
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359 }
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360
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361 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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362
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363 /* kqueue, epoll */
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364
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365 if (!wev->active && !wev->ready) {
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366 if (ngx_add_event(wev, NGX_WRITE_EVENT,
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367 NGX_CLEAR_EVENT | (lowat ? NGX_LOWAT_EVENT : 0))
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368 == NGX_ERROR)
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369 {
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370 return NGX_ERROR;
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371 }
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372 }
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373
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374 return NGX_OK;
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375
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376 } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
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377
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378 /* select, poll, /dev/poll */
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379
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380 if (!wev->active && !wev->ready) {
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381 if (ngx_add_event(wev, NGX_WRITE_EVENT, NGX_LEVEL_EVENT)
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382 == NGX_ERROR)
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383 {
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384 return NGX_ERROR;
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385 }
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386
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387 return NGX_OK;
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388 }
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389
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390 if (wev->active && wev->ready) {
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391 if (ngx_del_event(wev, NGX_WRITE_EVENT, NGX_LEVEL_EVENT)
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392 == NGX_ERROR)
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393 {
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394 return NGX_ERROR;
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395 }
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396
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397 return NGX_OK;
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398 }
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399
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236
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400 } else if (ngx_event_flags & NGX_USE_EVENTPORT_EVENT) {
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58
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401
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402 /* event ports */
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403
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236
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404 if (!wev->active && !wev->ready) {
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405 if (ngx_add_event(wev, NGX_WRITE_EVENT, 0) == NGX_ERROR) {
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58
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406 return NGX_ERROR;
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407 }
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236
|
408
|
|
|
409 return NGX_OK;
|
|
58
|
410 }
|
|
126
|
411
|
|
236
|
412 if (wev->oneshot && wev->ready) {
|
|
|
413 if (ngx_del_event(wev, NGX_WRITE_EVENT, 0) == NGX_ERROR) {
|
|
|
414 return NGX_ERROR;
|
|
|
415 }
|
|
|
416
|
|
|
417 return NGX_OK;
|
|
|
418 }
|
|
58
|
419 }
|
|
|
420
|
|
|
421 /* aio, iocp, rtsig */
|
|
|
422
|
|
|
423 return NGX_OK;
|
|
|
424 }
|
|
|
425
|
|
|
426
|
|
672
|
427 static char *
|
|
|
428 ngx_event_init_conf(ngx_cycle_t *cycle, void *conf)
|
|
|
429 {
|
|
|
430 if (ngx_get_conf(cycle->conf_ctx, ngx_events_module) == NULL) {
|
|
|
431 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
|
|
|
432 "no \"events\" section in configuration");
|
|
|
433 return NGX_CONF_ERROR;
|
|
|
434 }
|
|
|
435
|
|
|
436 return NGX_CONF_OK;
|
|
|
437 }
|
|
|
438
|
|
|
439
|
|
58
|
440 static ngx_int_t
|
|
|
441 ngx_event_module_init(ngx_cycle_t *cycle)
|
|
0
|
442 {
|
|
92
|
443 void ***cf;
|
|
154
|
444 u_char *shared;
|
|
160
|
445 size_t size, cl;
|
|
356
|
446 ngx_shm_t shm;
|
|
516
|
447 ngx_time_t *tp;
|
|
112
|
448 ngx_core_conf_t *ccf;
|
|
356
|
449 ngx_event_conf_t *ecf;
|
|
22
|
450
|
|
|
451 cf = ngx_get_conf(cycle->conf_ctx, ngx_events_module);
|
|
|
452 ecf = (*cf)[ngx_event_core_module.ctx_index];
|
|
|
453
|
|
480
|
454 if (!ngx_test_config && ngx_process <= NGX_PROCESS_MASTER) {
|
|
190
|
455 ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0,
|
|
|
456 "using the \"%s\" event method", ecf->name);
|
|
|
457 }
|
|
22
|
458
|
|
112
|
459 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
|
|
0
|
460
|
|
112
|
461 ngx_timer_resolution = ccf->timer_resolution;
|
|
|
462
|
|
|
463 #if !(NGX_WIN32)
|
|
356
|
464 {
|
|
|
465 ngx_int_t limit;
|
|
|
466 struct rlimit rlmt;
|
|
0
|
467
|
|
92
|
468 if (getrlimit(RLIMIT_NOFILE, &rlmt) == -1) {
|
|
|
469 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
470 "getrlimit(RLIMIT_NOFILE) failed, ignored");
|
|
|
471
|
|
|
472 } else {
|
|
|
473 if (ecf->connections > (ngx_uint_t) rlmt.rlim_cur
|
|
|
474 && (ccf->rlimit_nofile == NGX_CONF_UNSET
|
|
|
475 || ecf->connections > (ngx_uint_t) ccf->rlimit_nofile))
|
|
|
476 {
|
|
|
477 limit = (ccf->rlimit_nofile == NGX_CONF_UNSET) ?
|
|
|
478 (ngx_int_t) rlmt.rlim_cur : ccf->rlimit_nofile;
|
|
|
479
|
|
|
480 ngx_log_error(NGX_LOG_WARN, cycle->log, 0,
|
|
672
|
481 "%ui worker_connections exceed "
|
|
92
|
482 "open file resource limit: %i",
|
|
|
483 ecf->connections, limit);
|
|
|
484 }
|
|
|
485 }
|
|
356
|
486 }
|
|
154
|
487 #endif /* !(NGX_WIN32) */
|
|
|
488
|
|
92
|
489
|
|
160
|
490 if (ccf->master == 0) {
|
|
0
|
491 return NGX_OK;
|
|
|
492 }
|
|
|
493
|
|
160
|
494 if (ngx_accept_mutex_ptr) {
|
|
|
495 return NGX_OK;
|
|
|
496 }
|
|
|
497
|
|
|
498
|
|
672
|
499 /* cl should be equal to or greater than cache line size */
|
|
160
|
500
|
|
|
501 cl = 128;
|
|
|
502
|
|
|
503 size = cl /* ngx_accept_mutex */
|
|
516
|
504 + cl /* ngx_connection_counter */
|
|
|
505 + cl; /* ngx_temp_number */
|
|
0
|
506
|
|
|
507 #if (NGX_STAT_STUB)
|
|
|
508
|
|
160
|
509 size += cl /* ngx_stat_accepted */
|
|
|
510 + cl /* ngx_stat_handled */
|
|
|
511 + cl /* ngx_stat_requests */
|
|
|
512 + cl /* ngx_stat_active */
|
|
|
513 + cl /* ngx_stat_reading */
|
|
|
514 + cl; /* ngx_stat_writing */
|
|
0
|
515
|
|
|
516 #endif
|
|
|
517
|
|
154
|
518 shm.size = size;
|
|
480
|
519 shm.name.len = sizeof("nginx_shared_zone");
|
|
|
520 shm.name.data = (u_char *) "nginx_shared_zone";
|
|
154
|
521 shm.log = cycle->log;
|
|
|
522
|
|
|
523 if (ngx_shm_alloc(&shm) != NGX_OK) {
|
|
0
|
524 return NGX_ERROR;
|
|
|
525 }
|
|
|
526
|
|
154
|
527 shared = shm.addr;
|
|
|
528
|
|
0
|
529 ngx_accept_mutex_ptr = (ngx_atomic_t *) shared;
|
|
624
|
530 ngx_accept_mutex.spin = (ngx_uint_t) -1;
|
|
160
|
531
|
|
650
|
532 if (ngx_shmtx_create(&ngx_accept_mutex, (ngx_shmtx_sh_t *) shared,
|
|
|
533 cycle->lock_file.data)
|
|
160
|
534 != NGX_OK)
|
|
|
535 {
|
|
|
536 return NGX_ERROR;
|
|
|
537 }
|
|
|
538
|
|
|
539 ngx_connection_counter = (ngx_atomic_t *) (shared + 1 * cl);
|
|
0
|
540
|
|
480
|
541 (void) ngx_atomic_cmp_set(ngx_connection_counter, 0, 1);
|
|
112
|
542
|
|
0
|
543 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
10
|
544 "counter: %p, %d",
|
|
0
|
545 ngx_connection_counter, *ngx_connection_counter);
|
|
|
546
|
|
516
|
547 ngx_temp_number = (ngx_atomic_t *) (shared + 2 * cl);
|
|
|
548
|
|
|
549 tp = ngx_timeofday();
|
|
|
550
|
|
|
551 ngx_random_number = (tp->msec << 16) + ngx_pid;
|
|
|
552
|
|
|
553 #if (NGX_STAT_STUB)
|
|
|
554
|
|
|
555 ngx_stat_accepted = (ngx_atomic_t *) (shared + 3 * cl);
|
|
|
556 ngx_stat_handled = (ngx_atomic_t *) (shared + 4 * cl);
|
|
|
557 ngx_stat_requests = (ngx_atomic_t *) (shared + 5 * cl);
|
|
|
558 ngx_stat_active = (ngx_atomic_t *) (shared + 6 * cl);
|
|
|
559 ngx_stat_reading = (ngx_atomic_t *) (shared + 7 * cl);
|
|
|
560 ngx_stat_writing = (ngx_atomic_t *) (shared + 8 * cl);
|
|
|
561
|
|
|
562 #endif
|
|
|
563
|
|
0
|
564 return NGX_OK;
|
|
|
565 }
|
|
|
566
|
|
|
567
|
|
112
|
568 #if !(NGX_WIN32)
|
|
|
569
|
|
|
570 void
|
|
|
571 ngx_timer_signal_handler(int signo)
|
|
|
572 {
|
|
|
573 ngx_event_timer_alarm = 1;
|
|
|
574
|
|
|
575 #if 1
|
|
|
576 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ngx_cycle->log, 0, "timer signal");
|
|
|
577 #endif
|
|
|
578 }
|
|
|
579
|
|
|
580 #endif
|
|
|
581
|
|
|
582
|
|
58
|
583 static ngx_int_t
|
|
|
584 ngx_event_process_init(ngx_cycle_t *cycle)
|
|
0
|
585 {
|
|
|
586 ngx_uint_t m, i;
|
|
|
587 ngx_event_t *rev, *wev;
|
|
92
|
588 ngx_listening_t *ls;
|
|
|
589 ngx_connection_t *c, *next, *old;
|
|
0
|
590 ngx_core_conf_t *ccf;
|
|
|
591 ngx_event_conf_t *ecf;
|
|
|
592 ngx_event_module_t *module;
|
|
|
593
|
|
|
594 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
|
|
|
595 ecf = ngx_event_get_conf(cycle->conf_ctx, ngx_event_core_module);
|
|
|
596
|
|
258
|
597 if (ccf->master && ccf->worker_processes > 1 && ecf->accept_mutex) {
|
|
160
|
598 ngx_use_accept_mutex = 1;
|
|
0
|
599 ngx_accept_mutex_held = 0;
|
|
|
600 ngx_accept_mutex_delay = ecf->accept_mutex_delay;
|
|
160
|
601
|
|
|
602 } else {
|
|
|
603 ngx_use_accept_mutex = 0;
|
|
0
|
604 }
|
|
|
605
|
|
|
606 #if (NGX_THREADS)
|
|
50
|
607 ngx_posted_events_mutex = ngx_mutex_init(cycle->log, 0);
|
|
|
608 if (ngx_posted_events_mutex == NULL) {
|
|
0
|
609 return NGX_ERROR;
|
|
|
610 }
|
|
|
611 #endif
|
|
|
612
|
|
|
613 if (ngx_event_timer_init(cycle->log) == NGX_ERROR) {
|
|
|
614 return NGX_ERROR;
|
|
|
615 }
|
|
|
616
|
|
|
617 for (m = 0; ngx_modules[m]; m++) {
|
|
|
618 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
619 continue;
|
|
|
620 }
|
|
|
621
|
|
384
|
622 if (ngx_modules[m]->ctx_index != ecf->use) {
|
|
|
623 continue;
|
|
0
|
624 }
|
|
384
|
625
|
|
|
626 module = ngx_modules[m]->ctx;
|
|
|
627
|
|
|
628 if (module->actions.init(cycle, ngx_timer_resolution) != NGX_OK) {
|
|
|
629 /* fatal */
|
|
|
630 exit(2);
|
|
|
631 }
|
|
|
632
|
|
|
633 break;
|
|
0
|
634 }
|
|
|
635
|
|
92
|
636 #if !(NGX_WIN32)
|
|
|
637
|
|
112
|
638 if (ngx_timer_resolution && !(ngx_event_flags & NGX_USE_TIMER_EVENT)) {
|
|
356
|
639 struct sigaction sa;
|
|
|
640 struct itimerval itv;
|
|
112
|
641
|
|
|
642 ngx_memzero(&sa, sizeof(struct sigaction));
|
|
|
643 sa.sa_handler = ngx_timer_signal_handler;
|
|
|
644 sigemptyset(&sa.sa_mask);
|
|
|
645
|
|
|
646 if (sigaction(SIGALRM, &sa, NULL) == -1) {
|
|
|
647 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
648 "sigaction(SIGALRM) failed");
|
|
|
649 return NGX_ERROR;
|
|
|
650 }
|
|
|
651
|
|
|
652 itv.it_interval.tv_sec = ngx_timer_resolution / 1000;
|
|
|
653 itv.it_interval.tv_usec = (ngx_timer_resolution % 1000) * 1000;
|
|
|
654 itv.it_value.tv_sec = ngx_timer_resolution / 1000;
|
|
|
655 itv.it_value.tv_usec = (ngx_timer_resolution % 1000 ) * 1000;
|
|
|
656
|
|
|
657 if (setitimer(ITIMER_REAL, &itv, NULL) == -1) {
|
|
|
658 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
659 "setitimer() failed");
|
|
126
|
660 }
|
|
112
|
661 }
|
|
|
662
|
|
92
|
663 if (ngx_event_flags & NGX_USE_FD_EVENT) {
|
|
356
|
664 struct rlimit rlmt;
|
|
92
|
665
|
|
|
666 if (getrlimit(RLIMIT_NOFILE, &rlmt) == -1) {
|
|
|
667 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
668 "getrlimit(RLIMIT_NOFILE) failed");
|
|
|
669 return NGX_ERROR;
|
|
|
670 }
|
|
|
671
|
|
|
672 cycle->files_n = (ngx_uint_t) rlmt.rlim_cur;
|
|
|
673
|
|
|
674 cycle->files = ngx_calloc(sizeof(ngx_connection_t *) * cycle->files_n,
|
|
|
675 cycle->log);
|
|
|
676 if (cycle->files == NULL) {
|
|
|
677 return NGX_ERROR;
|
|
|
678 }
|
|
|
679 }
|
|
|
680
|
|
|
681 #endif
|
|
|
682
|
|
384
|
683 cycle->connections =
|
|
|
684 ngx_alloc(sizeof(ngx_connection_t) * cycle->connection_n, cycle->log);
|
|
110
|
685 if (cycle->connections == NULL) {
|
|
0
|
686 return NGX_ERROR;
|
|
|
687 }
|
|
|
688
|
|
110
|
689 c = cycle->connections;
|
|
0
|
690
|
|
384
|
691 cycle->read_events = ngx_alloc(sizeof(ngx_event_t) * cycle->connection_n,
|
|
0
|
692 cycle->log);
|
|
110
|
693 if (cycle->read_events == NULL) {
|
|
0
|
694 return NGX_ERROR;
|
|
|
695 }
|
|
|
696
|
|
110
|
697 rev = cycle->read_events;
|
|
0
|
698 for (i = 0; i < cycle->connection_n; i++) {
|
|
|
699 rev[i].closed = 1;
|
|
30
|
700 rev[i].instance = 1;
|
|
0
|
701 #if (NGX_THREADS)
|
|
|
702 rev[i].lock = &c[i].lock;
|
|
|
703 rev[i].own_lock = &c[i].lock;
|
|
|
704 #endif
|
|
|
705 }
|
|
|
706
|
|
384
|
707 cycle->write_events = ngx_alloc(sizeof(ngx_event_t) * cycle->connection_n,
|
|
30
|
708 cycle->log);
|
|
110
|
709 if (cycle->write_events == NULL) {
|
|
0
|
710 return NGX_ERROR;
|
|
|
711 }
|
|
|
712
|
|
110
|
713 wev = cycle->write_events;
|
|
0
|
714 for (i = 0; i < cycle->connection_n; i++) {
|
|
|
715 wev[i].closed = 1;
|
|
|
716 #if (NGX_THREADS)
|
|
|
717 wev[i].lock = &c[i].lock;
|
|
|
718 wev[i].own_lock = &c[i].lock;
|
|
|
719 #endif
|
|
|
720 }
|
|
|
721
|
|
92
|
722 i = cycle->connection_n;
|
|
|
723 next = NULL;
|
|
|
724
|
|
|
725 do {
|
|
|
726 i--;
|
|
|
727
|
|
|
728 c[i].data = next;
|
|
110
|
729 c[i].read = &cycle->read_events[i];
|
|
|
730 c[i].write = &cycle->write_events[i];
|
|
92
|
731 c[i].fd = (ngx_socket_t) -1;
|
|
|
732
|
|
|
733 next = &c[i];
|
|
|
734
|
|
|
735 #if (NGX_THREADS)
|
|
|
736 c[i].lock = 0;
|
|
|
737 #endif
|
|
|
738 } while (i);
|
|
|
739
|
|
|
740 cycle->free_connections = next;
|
|
384
|
741 cycle->free_connection_n = cycle->connection_n;
|
|
92
|
742
|
|
0
|
743 /* for each listening socket */
|
|
|
744
|
|
92
|
745 ls = cycle->listening.elts;
|
|
0
|
746 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
747
|
|
92
|
748 c = ngx_get_connection(ls[i].fd, cycle->log);
|
|
0
|
749
|
|
92
|
750 if (c == NULL) {
|
|
|
751 return NGX_ERROR;
|
|
|
752 }
|
|
0
|
753
|
|
92
|
754 c->log = &ls[i].log;
|
|
|
755
|
|
|
756 c->listening = &ls[i];
|
|
|
757 ls[i].connection = c;
|
|
|
758
|
|
110
|
759 rev = c->read;
|
|
0
|
760
|
|
|
761 rev->log = c->log;
|
|
|
762 rev->accept = 1;
|
|
|
763
|
|
18
|
764 #if (NGX_HAVE_DEFERRED_ACCEPT)
|
|
92
|
765 rev->deferred_accept = ls[i].deferred_accept;
|
|
0
|
766 #endif
|
|
|
767
|
|
|
768 if (!(ngx_event_flags & NGX_USE_IOCP_EVENT)) {
|
|
92
|
769 if (ls[i].previous) {
|
|
0
|
770
|
|
|
771 /*
|
|
|
772 * delete the old accept events that were bound to
|
|
|
773 * the old cycle read events array
|
|
|
774 */
|
|
|
775
|
|
92
|
776 old = ls[i].previous->connection;
|
|
|
777
|
|
|
778 if (ngx_del_event(old->read, NGX_READ_EVENT, NGX_CLOSE_EVENT)
|
|
|
779 == NGX_ERROR)
|
|
0
|
780 {
|
|
|
781 return NGX_ERROR;
|
|
|
782 }
|
|
|
783
|
|
92
|
784 old->fd = (ngx_socket_t) -1;
|
|
0
|
785 }
|
|
|
786 }
|
|
|
787
|
|
10
|
788 #if (NGX_WIN32)
|
|
0
|
789
|
|
|
790 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
|
|
356
|
791 ngx_iocp_conf_t *iocpcf;
|
|
|
792
|
|
58
|
793 rev->handler = ngx_event_acceptex;
|
|
0
|
794
|
|
484
|
795 if (ngx_use_accept_mutex) {
|
|
|
796 continue;
|
|
|
797 }
|
|
|
798
|
|
0
|
799 if (ngx_add_event(rev, 0, NGX_IOCP_ACCEPT) == NGX_ERROR) {
|
|
|
800 return NGX_ERROR;
|
|
|
801 }
|
|
|
802
|
|
92
|
803 ls[i].log.handler = ngx_acceptex_log_error;
|
|
|
804
|
|
0
|
805 iocpcf = ngx_event_get_conf(cycle->conf_ctx, ngx_iocp_module);
|
|
92
|
806 if (ngx_event_post_acceptex(&ls[i], iocpcf->post_acceptex)
|
|
|
807 == NGX_ERROR)
|
|
0
|
808 {
|
|
|
809 return NGX_ERROR;
|
|
|
810 }
|
|
|
811
|
|
|
812 } else {
|
|
58
|
813 rev->handler = ngx_event_accept;
|
|
10
|
814
|
|
484
|
815 if (ngx_use_accept_mutex) {
|
|
|
816 continue;
|
|
|
817 }
|
|
|
818
|
|
0
|
819 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
820 return NGX_ERROR;
|
|
|
821 }
|
|
|
822 }
|
|
|
823
|
|
|
824 #else
|
|
|
825
|
|
58
|
826 rev->handler = ngx_event_accept;
|
|
0
|
827
|
|
160
|
828 if (ngx_use_accept_mutex) {
|
|
0
|
829 continue;
|
|
|
830 }
|
|
|
831
|
|
|
832 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
|
|
|
833 if (ngx_add_conn(c) == NGX_ERROR) {
|
|
|
834 return NGX_ERROR;
|
|
|
835 }
|
|
|
836
|
|
|
837 } else {
|
|
|
838 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
839 return NGX_ERROR;
|
|
|
840 }
|
|
|
841 }
|
|
|
842
|
|
|
843 #endif
|
|
92
|
844
|
|
0
|
845 }
|
|
|
846
|
|
|
847 return NGX_OK;
|
|
|
848 }
|
|
|
849
|
|
|
850
|
|
58
|
851 ngx_int_t
|
|
|
852 ngx_send_lowat(ngx_connection_t *c, size_t lowat)
|
|
2
|
853 {
|
|
|
854 int sndlowat;
|
|
|
855
|
|
4
|
856 #if (NGX_HAVE_LOWAT_EVENT)
|
|
2
|
857
|
|
4
|
858 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
2
|
859 c->write->available = lowat;
|
|
|
860 return NGX_OK;
|
|
|
861 }
|
|
|
862
|
|
|
863 #endif
|
|
126
|
864
|
|
2
|
865 if (lowat == 0 || c->sndlowat) {
|
|
|
866 return NGX_OK;
|
|
|
867 }
|
|
|
868
|
|
|
869 sndlowat = (int) lowat;
|
|
|
870
|
|
|
871 if (setsockopt(c->fd, SOL_SOCKET, SO_SNDLOWAT,
|
|
282
|
872 (const void *) &sndlowat, sizeof(int))
|
|
|
873 == -1)
|
|
2
|
874 {
|
|
|
875 ngx_connection_error(c, ngx_socket_errno,
|
|
|
876 "setsockopt(SO_SNDLOWAT) failed");
|
|
|
877 return NGX_ERROR;
|
|
|
878 }
|
|
|
879
|
|
|
880 c->sndlowat = 1;
|
|
|
881
|
|
|
882 return NGX_OK;
|
|
|
883 }
|
|
|
884
|
|
|
885
|
|
58
|
886 static char *
|
|
|
887 ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
888 {
|
|
50
|
889 char *rv;
|
|
0
|
890 void ***ctx;
|
|
50
|
891 ngx_uint_t i;
|
|
0
|
892 ngx_conf_t pcf;
|
|
50
|
893 ngx_event_module_t *m;
|
|
0
|
894
|
|
|
895 /* count the number of the event modules and set up their indices */
|
|
|
896
|
|
|
897 ngx_event_max_module = 0;
|
|
50
|
898 for (i = 0; ngx_modules[i]; i++) {
|
|
|
899 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
|
0
|
900 continue;
|
|
|
901 }
|
|
|
902
|
|
50
|
903 ngx_modules[i]->ctx_index = ngx_event_max_module++;
|
|
0
|
904 }
|
|
|
905
|
|
50
|
906 ctx = ngx_pcalloc(cf->pool, sizeof(void *));
|
|
|
907 if (ctx == NULL) {
|
|
|
908 return NGX_CONF_ERROR;
|
|
|
909 }
|
|
0
|
910
|
|
50
|
911 *ctx = ngx_pcalloc(cf->pool, ngx_event_max_module * sizeof(void *));
|
|
|
912 if (*ctx == NULL) {
|
|
|
913 return NGX_CONF_ERROR;
|
|
|
914 }
|
|
0
|
915
|
|
|
916 *(void **) conf = ctx;
|
|
|
917
|
|
50
|
918 for (i = 0; ngx_modules[i]; i++) {
|
|
|
919 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
|
0
|
920 continue;
|
|
|
921 }
|
|
|
922
|
|
50
|
923 m = ngx_modules[i]->ctx;
|
|
0
|
924
|
|
50
|
925 if (m->create_conf) {
|
|
|
926 (*ctx)[ngx_modules[i]->ctx_index] = m->create_conf(cf->cycle);
|
|
|
927 if ((*ctx)[ngx_modules[i]->ctx_index] == NULL) {
|
|
|
928 return NGX_CONF_ERROR;
|
|
|
929 }
|
|
0
|
930 }
|
|
|
931 }
|
|
|
932
|
|
|
933 pcf = *cf;
|
|
|
934 cf->ctx = ctx;
|
|
|
935 cf->module_type = NGX_EVENT_MODULE;
|
|
|
936 cf->cmd_type = NGX_EVENT_CONF;
|
|
50
|
937
|
|
0
|
938 rv = ngx_conf_parse(cf, NULL);
|
|
50
|
939
|
|
0
|
940 *cf = pcf;
|
|
|
941
|
|
|
942 if (rv != NGX_CONF_OK)
|
|
|
943 return rv;
|
|
|
944
|
|
50
|
945 for (i = 0; ngx_modules[i]; i++) {
|
|
|
946 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
|
0
|
947 continue;
|
|
|
948 }
|
|
|
949
|
|
50
|
950 m = ngx_modules[i]->ctx;
|
|
0
|
951
|
|
50
|
952 if (m->init_conf) {
|
|
|
953 rv = m->init_conf(cf->cycle, (*ctx)[ngx_modules[i]->ctx_index]);
|
|
0
|
954 if (rv != NGX_CONF_OK) {
|
|
|
955 return rv;
|
|
|
956 }
|
|
|
957 }
|
|
|
958 }
|
|
|
959
|
|
|
960 return NGX_CONF_OK;
|
|
|
961 }
|
|
|
962
|
|
|
963
|
|
58
|
964 static char *
|
|
|
965 ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
966 {
|
|
|
967 ngx_event_conf_t *ecf = conf;
|
|
|
968
|
|
|
969 ngx_str_t *value;
|
|
|
970
|
|
|
971 if (ecf->connections != NGX_CONF_UNSET_UINT) {
|
|
378
|
972 return "is duplicate";
|
|
0
|
973 }
|
|
|
974
|
|
130
|
975 if (ngx_strcmp(cmd->name.data, "connections") == 0) {
|
|
|
976 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
977 "the \"connections\" directive is deprecated, "
|
|
|
978 "use the \"worker_connections\" directive instead");
|
|
|
979 }
|
|
|
980
|
|
0
|
981 value = cf->args->elts;
|
|
|
982 ecf->connections = ngx_atoi(value[1].data, value[1].len);
|
|
|
983 if (ecf->connections == (ngx_uint_t) NGX_ERROR) {
|
|
|
984 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
985 "invalid number \"%V\"", &value[1]);
|
|
0
|
986
|
|
|
987 return NGX_CONF_ERROR;
|
|
|
988 }
|
|
|
989
|
|
|
990 cf->cycle->connection_n = ecf->connections;
|
|
|
991
|
|
|
992 return NGX_CONF_OK;
|
|
|
993 }
|
|
|
994
|
|
|
995
|
|
58
|
996 static char *
|
|
|
997 ngx_event_use(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
998 {
|
|
|
999 ngx_event_conf_t *ecf = conf;
|
|
|
1000
|
|
|
1001 ngx_int_t m;
|
|
|
1002 ngx_str_t *value;
|
|
|
1003 ngx_event_conf_t *old_ecf;
|
|
|
1004 ngx_event_module_t *module;
|
|
|
1005
|
|
|
1006 if (ecf->use != NGX_CONF_UNSET_UINT) {
|
|
378
|
1007 return "is duplicate";
|
|
0
|
1008 }
|
|
|
1009
|
|
|
1010 value = cf->args->elts;
|
|
|
1011
|
|
|
1012 if (cf->cycle->old_cycle->conf_ctx) {
|
|
|
1013 old_ecf = ngx_event_get_conf(cf->cycle->old_cycle->conf_ctx,
|
|
|
1014 ngx_event_core_module);
|
|
|
1015 } else {
|
|
|
1016 old_ecf = NULL;
|
|
|
1017 }
|
|
|
1018
|
|
|
1019
|
|
|
1020 for (m = 0; ngx_modules[m]; m++) {
|
|
|
1021 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
|
1022 continue;
|
|
|
1023 }
|
|
|
1024
|
|
|
1025 module = ngx_modules[m]->ctx;
|
|
|
1026 if (module->name->len == value[1].len) {
|
|
|
1027 if (ngx_strcmp(module->name->data, value[1].data) == 0) {
|
|
|
1028 ecf->use = ngx_modules[m]->ctx_index;
|
|
|
1029 ecf->name = module->name->data;
|
|
|
1030
|
|
|
1031 if (ngx_process == NGX_PROCESS_SINGLE
|
|
|
1032 && old_ecf
|
|
|
1033 && old_ecf->use != ecf->use)
|
|
|
1034 {
|
|
|
1035 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
16
|
1036 "when the server runs without a master process "
|
|
|
1037 "the \"%V\" event type must be the same as "
|
|
|
1038 "in previous configuration - \"%s\" "
|
|
640
|
1039 "and it cannot be changed on the fly, "
|
|
16
|
1040 "to change it you need to stop server "
|
|
|
1041 "and start it again",
|
|
|
1042 &value[1], old_ecf->name);
|
|
0
|
1043
|
|
|
1044 return NGX_CONF_ERROR;
|
|
|
1045 }
|
|
|
1046
|
|
|
1047 return NGX_CONF_OK;
|
|
|
1048 }
|
|
|
1049 }
|
|
|
1050 }
|
|
|
1051
|
|
|
1052 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
1053 "invalid event type \"%V\"", &value[1]);
|
|
0
|
1054
|
|
|
1055 return NGX_CONF_ERROR;
|
|
|
1056 }
|
|
|
1057
|
|
|
1058
|
|
58
|
1059 static char *
|
|
|
1060 ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
1061 {
|
|
|
1062 #if (NGX_DEBUG)
|
|
|
1063 ngx_event_conf_t *ecf = conf;
|
|
|
1064
|
|
326
|
1065 ngx_int_t rc;
|
|
|
1066 ngx_str_t *value;
|
|
214
|
1067 ngx_event_debug_t *dc;
|
|
|
1068 struct hostent *h;
|
|
454
|
1069 ngx_cidr_t cidr;
|
|
0
|
1070
|
|
|
1071 value = cf->args->elts;
|
|
|
1072
|
|
214
|
1073 dc = ngx_array_push(&ecf->debug_connection);
|
|
|
1074 if (dc == NULL) {
|
|
0
|
1075 return NGX_CONF_ERROR;
|
|
|
1076 }
|
|
|
1077
|
|
454
|
1078 rc = ngx_ptocidr(&value[1], &cidr);
|
|
326
|
1079
|
|
|
1080 if (rc == NGX_DONE) {
|
|
|
1081 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
1082 "low address bits of %V are meaningless", &value[1]);
|
|
|
1083 rc = NGX_OK;
|
|
|
1084 }
|
|
|
1085
|
|
|
1086 if (rc == NGX_OK) {
|
|
454
|
1087
|
|
|
1088 /* AF_INET only */
|
|
|
1089
|
|
|
1090 if (cidr.family != AF_INET) {
|
|
|
1091 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1092 "\"debug_connection\" supports IPv4 only");
|
|
|
1093 return NGX_CONF_ERROR;
|
|
|
1094 }
|
|
|
1095
|
|
|
1096 dc->mask = cidr.u.in.mask;
|
|
|
1097 dc->addr = cidr.u.in.addr;
|
|
|
1098
|
|
326
|
1099 return NGX_CONF_OK;
|
|
0
|
1100 }
|
|
|
1101
|
|
|
1102 h = gethostbyname((char *) value[1].data);
|
|
|
1103
|
|
|
1104 if (h == NULL || h->h_addr_list[0] == NULL) {
|
|
|
1105 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
1106 "host \"%s\" not found", value[1].data);
|
|
0
|
1107 return NGX_CONF_ERROR;
|
|
|
1108 }
|
|
|
1109
|
|
214
|
1110 dc->mask = 0xffffffff;
|
|
|
1111 dc->addr = *(in_addr_t *)(h->h_addr_list[0]);
|
|
0
|
1112
|
|
|
1113 #else
|
|
|
1114
|
|
|
1115 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
1116 "\"debug_connection\" is ignored, you need to rebuild "
|
|
|
1117 "nginx using --with-debug option to enable it");
|
|
|
1118
|
|
|
1119 #endif
|
|
|
1120
|
|
326
|
1121 return NGX_CONF_OK;
|
|
0
|
1122 }
|
|
|
1123
|
|
|
1124
|
|
58
|
1125 static void *
|
|
672
|
1126 ngx_event_core_create_conf(ngx_cycle_t *cycle)
|
|
0
|
1127 {
|
|
|
1128 ngx_event_conf_t *ecf;
|
|
|
1129
|
|
50
|
1130 ecf = ngx_palloc(cycle->pool, sizeof(ngx_event_conf_t));
|
|
|
1131 if (ecf == NULL) {
|
|
496
|
1132 return NULL;
|
|
50
|
1133 }
|
|
0
|
1134
|
|
|
1135 ecf->connections = NGX_CONF_UNSET_UINT;
|
|
|
1136 ecf->use = NGX_CONF_UNSET_UINT;
|
|
|
1137 ecf->multi_accept = NGX_CONF_UNSET;
|
|
|
1138 ecf->accept_mutex = NGX_CONF_UNSET;
|
|
|
1139 ecf->accept_mutex_delay = NGX_CONF_UNSET_MSEC;
|
|
|
1140 ecf->name = (void *) NGX_CONF_UNSET;
|
|
|
1141
|
|
|
1142 #if (NGX_DEBUG)
|
|
50
|
1143
|
|
|
1144 if (ngx_array_init(&ecf->debug_connection, cycle->pool, 4,
|
|
214
|
1145 sizeof(ngx_event_debug_t)) == NGX_ERROR)
|
|
50
|
1146 {
|
|
496
|
1147 return NULL;
|
|
50
|
1148 }
|
|
|
1149
|
|
0
|
1150 #endif
|
|
|
1151
|
|
|
1152 return ecf;
|
|
|
1153 }
|
|
|
1154
|
|
|
1155
|
|
58
|
1156 static char *
|
|
672
|
1157 ngx_event_core_init_conf(ngx_cycle_t *cycle, void *conf)
|
|
0
|
1158 {
|
|
|
1159 ngx_event_conf_t *ecf = conf;
|
|
16
|
1160
|
|
50
|
1161 #if (NGX_HAVE_EPOLL) && !(NGX_TEST_BUILD_EPOLL)
|
|
|
1162 int fd;
|
|
|
1163 #endif
|
|
|
1164 #if (NGX_HAVE_RTSIG)
|
|
|
1165 ngx_uint_t rtsig;
|
|
122
|
1166 ngx_core_conf_t *ccf;
|
|
50
|
1167 #endif
|
|
384
|
1168 ngx_int_t i;
|
|
16
|
1169 ngx_module_t *module;
|
|
|
1170 ngx_event_module_t *event_module;
|
|
|
1171
|
|
|
1172 module = NULL;
|
|
|
1173
|
|
18
|
1174 #if (NGX_HAVE_EPOLL) && !(NGX_TEST_BUILD_EPOLL)
|
|
16
|
1175
|
|
|
1176 fd = epoll_create(100);
|
|
|
1177
|
|
|
1178 if (fd != -1) {
|
|
|
1179 close(fd);
|
|
|
1180 module = &ngx_epoll_module;
|
|
|
1181
|
|
|
1182 } else if (ngx_errno != NGX_ENOSYS) {
|
|
|
1183 module = &ngx_epoll_module;
|
|
|
1184 }
|
|
|
1185
|
|
|
1186 #endif
|
|
|
1187
|
|
18
|
1188 #if (NGX_HAVE_RTSIG)
|
|
16
|
1189
|
|
|
1190 if (module == NULL) {
|
|
|
1191 module = &ngx_rtsig_module;
|
|
|
1192 rtsig = 1;
|
|
50
|
1193
|
|
|
1194 } else {
|
|
|
1195 rtsig = 0;
|
|
16
|
1196 }
|
|
|
1197
|
|
|
1198 #endif
|
|
|
1199
|
|
18
|
1200 #if (NGX_HAVE_DEVPOLL)
|
|
16
|
1201
|
|
|
1202 module = &ngx_devpoll_module;
|
|
|
1203
|
|
0
|
1204 #endif
|
|
|
1205
|
|
18
|
1206 #if (NGX_HAVE_KQUEUE)
|
|
0
|
1207
|
|
16
|
1208 module = &ngx_kqueue_module;
|
|
0
|
1209
|
|
16
|
1210 #endif
|
|
0
|
1211
|
|
18
|
1212 #if (NGX_HAVE_SELECT)
|
|
0
|
1213
|
|
16
|
1214 if (module == NULL) {
|
|
|
1215 module = &ngx_select_module;
|
|
|
1216 }
|
|
|
1217
|
|
0
|
1218 #endif
|
|
|
1219
|
|
16
|
1220 if (module == NULL) {
|
|
|
1221 for (i = 0; ngx_modules[i]; i++) {
|
|
384
|
1222
|
|
|
1223 if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
|
|
|
1224 continue;
|
|
|
1225 }
|
|
|
1226
|
|
|
1227 event_module = ngx_modules[i]->ctx;
|
|
0
|
1228
|
|
384
|
1229 if (ngx_strcmp(event_module->name->data, event_core_name.data) == 0)
|
|
|
1230 {
|
|
|
1231 continue;
|
|
|
1232 }
|
|
0
|
1233
|
|
384
|
1234 module = ngx_modules[i];
|
|
|
1235 break;
|
|
0
|
1236 }
|
|
|
1237 }
|
|
|
1238
|
|
16
|
1239 if (module == NULL) {
|
|
0
|
1240 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0, "no events module found");
|
|
|
1241 return NGX_CONF_ERROR;
|
|
|
1242 }
|
|
|
1243
|
|
384
|
1244 ngx_conf_init_uint_value(ecf->connections, DEFAULT_CONNECTIONS);
|
|
16
|
1245 cycle->connection_n = ecf->connections;
|
|
0
|
1246
|
|
212
|
1247 ngx_conf_init_uint_value(ecf->use, module->ctx_index);
|
|
0
|
1248
|
|
16
|
1249 event_module = module->ctx;
|
|
|
1250 ngx_conf_init_ptr_value(ecf->name, event_module->name->data);
|
|
0
|
1251
|
|
|
1252 ngx_conf_init_value(ecf->multi_accept, 0);
|
|
|
1253 ngx_conf_init_value(ecf->accept_mutex, 1);
|
|
|
1254 ngx_conf_init_msec_value(ecf->accept_mutex_delay, 500);
|
|
|
1255
|
|
16
|
1256
|
|
50
|
1257 #if (NGX_HAVE_RTSIG)
|
|
|
1258
|
|
|
1259 if (!rtsig) {
|
|
|
1260 return NGX_CONF_OK;
|
|
|
1261 }
|
|
|
1262
|
|
|
1263 if (ecf->accept_mutex) {
|
|
16
|
1264 return NGX_CONF_OK;
|
|
0
|
1265 }
|
|
16
|
1266
|
|
|
1267 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
|
|
0
|
1268
|
|
16
|
1269 if (ccf->worker_processes == 0) {
|
|
|
1270 return NGX_CONF_OK;
|
|
|
1271 }
|
|
|
1272
|
|
|
1273 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
|
|
|
1274 "the \"rtsig\" method requires \"accept_mutex\" to be on");
|
|
|
1275
|
|
|
1276 return NGX_CONF_ERROR;
|
|
122
|
1277
|
|
|
1278 #else
|
|
|
1279
|
|
|
1280 return NGX_CONF_OK;
|
|
|
1281
|
|
|
1282 #endif
|
|
0
|
1283 }
|
