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0
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_event.h>
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10
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11
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18
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12 #if (NGX_TEST_BUILD_EPOLL)
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0
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13
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14 /* epoll declarations */
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15
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16 #define EPOLLIN 0x001
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17 #define EPOLLPRI 0x002
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18 #define EPOLLOUT 0x004
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19 #define EPOLLRDNORM 0x040
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20 #define EPOLLRDBAND 0x080
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21 #define EPOLLWRNORM 0x100
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22 #define EPOLLWRBAND 0x200
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23 #define EPOLLMSG 0x400
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24 #define EPOLLERR 0x008
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25 #define EPOLLHUP 0x010
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26
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27 #define EPOLLET 0x80000000
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28 #define EPOLLONESHOT 0x40000000
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29
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30 #define EPOLL_CTL_ADD 1
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31 #define EPOLL_CTL_DEL 2
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32 #define EPOLL_CTL_MOD 3
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33
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34 typedef union epoll_data {
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35 void *ptr;
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36 int fd;
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37 uint32_t u32;
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38 uint64_t u64;
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39 } epoll_data_t;
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40
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41 struct epoll_event {
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42 uint32_t events;
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43 epoll_data_t data;
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44 };
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45
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46 int epoll_create(int size)
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47 {
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48 return -1;
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49 }
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50
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51 int epoll_ctl(int epfd, int op, int fd, struct epoll_event *event)
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52 {
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53 return -1;
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54 }
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55
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56 int epoll_wait(int epfd, struct epoll_event *events, int nevents, int timeout)
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57 {
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58 return -1;
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59 }
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60
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529
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61 #if (NGX_HAVE_FILE_AIO)
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62
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63 #define SYS_io_setup 245
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64 #define SYS_io_destroy 246
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65 #define SYS_io_getevents 247
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66 #define SYS_eventfd 323
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67
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68 typedef u_int aio_context_t;
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69
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70 struct io_event {
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71 uint64_t data; /* the data field from the iocb */
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72 uint64_t obj; /* what iocb this event came from */
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73 int64_t res; /* result code for this event */
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74 int64_t res2; /* secondary result */
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75 };
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76
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77
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78 int eventfd(u_int initval)
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79 {
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80 return -1;
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81 }
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82
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83 #endif
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0
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84 #endif
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85
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86
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87 typedef struct {
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324
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88 ngx_uint_t events;
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0
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89 } ngx_epoll_conf_t;
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90
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91
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112
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92 static ngx_int_t ngx_epoll_init(ngx_cycle_t *cycle, ngx_msec_t timer);
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0
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93 static void ngx_epoll_done(ngx_cycle_t *cycle);
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324
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94 static ngx_int_t ngx_epoll_add_event(ngx_event_t *ev, ngx_int_t event,
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95 ngx_uint_t flags);
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96 static ngx_int_t ngx_epoll_del_event(ngx_event_t *ev, ngx_int_t event,
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97 ngx_uint_t flags);
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48
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98 static ngx_int_t ngx_epoll_add_connection(ngx_connection_t *c);
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324
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99 static ngx_int_t ngx_epoll_del_connection(ngx_connection_t *c,
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100 ngx_uint_t flags);
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112
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101 static ngx_int_t ngx_epoll_process_events(ngx_cycle_t *cycle, ngx_msec_t timer,
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102 ngx_uint_t flags);
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0
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103
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529
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104 #if (NGX_HAVE_FILE_AIO)
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105 static void ngx_epoll_eventfd_handler(ngx_event_t *ev);
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106 #endif
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107
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0
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108 static void *ngx_epoll_create_conf(ngx_cycle_t *cycle);
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109 static char *ngx_epoll_init_conf(ngx_cycle_t *cycle, void *conf);
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110
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111 static int ep = -1;
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112 static struct epoll_event *event_list;
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324
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113 static ngx_uint_t nevents;
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0
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114
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529
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115 #if (NGX_HAVE_FILE_AIO)
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116
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117 int ngx_eventfd = -1;
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118 aio_context_t ngx_aio_ctx = 0;
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119
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120 static ngx_event_t ngx_eventfd_event;
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121 static ngx_connection_t ngx_eventfd_conn;
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122
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123 #endif
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0
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124
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125 static ngx_str_t epoll_name = ngx_string("epoll");
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126
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127 static ngx_command_t ngx_epoll_commands[] = {
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128
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48
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129 { ngx_string("epoll_events"),
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130 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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131 ngx_conf_set_num_slot,
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132 0,
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133 offsetof(ngx_epoll_conf_t, events),
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134 NULL },
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0
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135
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48
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136 ngx_null_command
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0
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137 };
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138
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139
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140 ngx_event_module_t ngx_epoll_module_ctx = {
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141 &epoll_name,
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142 ngx_epoll_create_conf, /* create configuration */
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143 ngx_epoll_init_conf, /* init configuration */
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144
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145 {
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146 ngx_epoll_add_event, /* add an event */
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147 ngx_epoll_del_event, /* delete an event */
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148 ngx_epoll_add_event, /* enable an event */
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149 ngx_epoll_del_event, /* disable an event */
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150 ngx_epoll_add_connection, /* add an connection */
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151 ngx_epoll_del_connection, /* delete an connection */
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152 NULL, /* process the changes */
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153 ngx_epoll_process_events, /* process the events */
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154 ngx_epoll_init, /* init the events */
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155 ngx_epoll_done, /* done the events */
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156 }
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157 };
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158
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159 ngx_module_t ngx_epoll_module = {
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58
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160 NGX_MODULE_V1,
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0
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161 &ngx_epoll_module_ctx, /* module context */
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162 ngx_epoll_commands, /* module directives */
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163 NGX_EVENT_MODULE, /* module type */
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90
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164 NULL, /* init master */
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0
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165 NULL, /* init module */
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90
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166 NULL, /* init process */
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167 NULL, /* init thread */
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168 NULL, /* exit thread */
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169 NULL, /* exit process */
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170 NULL, /* exit master */
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171 NGX_MODULE_V1_PADDING
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0
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172 };
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173
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174
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529
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175 #if (NGX_HAVE_FILE_AIO)
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176
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177 /*
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178 * We call io_setup(), io_destroy() io_submit(), and io_getevents() directly
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179 * as syscalls instead of libaio usage, because the library header file
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180 * supports eventfd() since 0.3.107 version only.
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181 *
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182 * Also we do not use eventfd() in glibc, because glibc supports it
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183 * since 2.8 version and glibc maps two syscalls eventfd() and eventfd2()
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184 * into single eventfd() function with different number of parameters.
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185 */
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186
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187 static long
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188 io_setup(u_int nr_reqs, aio_context_t *ctx)
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189 {
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190 return syscall(SYS_io_setup, nr_reqs, ctx);
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191 }
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192
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193
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194 static int
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195 io_destroy(aio_context_t ctx)
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196 {
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197 return syscall(SYS_io_destroy, ctx);
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198 }
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199
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200
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201 static long
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202 io_getevents(aio_context_t ctx, long min_nr, long nr, struct io_event *events,
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203 struct timespec *tmo)
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204 {
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205 return syscall(SYS_io_getevents, ctx, min_nr, nr, events, tmo);
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206 }
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207
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208 #endif
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209
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210
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48
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211 static ngx_int_t
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112
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212 ngx_epoll_init(ngx_cycle_t *cycle, ngx_msec_t timer)
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0
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213 {
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214 ngx_epoll_conf_t *epcf;
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215
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216 epcf = ngx_event_get_conf(cycle->conf_ctx, ngx_epoll_module);
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217
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218 if (ep == -1) {
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384
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219 ep = epoll_create(cycle->connection_n / 2);
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0
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220
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221 if (ep == -1) {
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222 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
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223 "epoll_create() failed");
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224 return NGX_ERROR;
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225 }
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529
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226
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227 #if (NGX_HAVE_FILE_AIO)
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228 {
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229 int n;
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230 struct epoll_event ee;
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231
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232 ngx_eventfd = syscall(SYS_eventfd, 0);
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233
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234 if (ngx_eventfd == -1) {
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235 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
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236 "eventfd() failed");
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237 return NGX_ERROR;
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238 }
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239
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240 n = 1;
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241
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242 if (ioctl(ngx_eventfd, FIONBIO, &n) == -1) {
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243 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
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244 "ioctl(eventfd, FIONBIO) failed");
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245 }
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246
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247 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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248 "eventfd: %d", ngx_eventfd);
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249
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250 n = io_setup(1024, &ngx_aio_ctx);
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251
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252 if (n != 0) {
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253 ngx_log_error(NGX_LOG_EMERG, cycle->log, -n, "io_setup() failed");
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254 return NGX_ERROR;
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255 }
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256
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257 ngx_eventfd_event.data = &ngx_eventfd_conn;
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258 ngx_eventfd_event.handler = ngx_epoll_eventfd_handler;
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259 ngx_eventfd_event.log = cycle->log;
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260 ngx_eventfd_event.active = 1;
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261 ngx_eventfd_conn.fd = ngx_eventfd;
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262 ngx_eventfd_conn.read = &ngx_eventfd_event;
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263 ngx_eventfd_conn.log = cycle->log;
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264
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265 ee.events = EPOLLIN|EPOLLET;
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266 ee.data.ptr = &ngx_eventfd_conn;
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267
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268 if (epoll_ctl(ep, EPOLL_CTL_ADD, ngx_eventfd, &ee) == -1) {
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269 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
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270 "epoll_ctl(EPOLL_CTL_ADD, eventfd) failed");
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271 return NGX_ERROR;
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272 }
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273 }
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274 #endif
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0
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275 }
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276
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277 if (nevents < epcf->events) {
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278 if (event_list) {
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279 ngx_free(event_list);
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280 }
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281
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282 event_list = ngx_alloc(sizeof(struct epoll_event) * epcf->events,
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283 cycle->log);
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284 if (event_list == NULL) {
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285 return NGX_ERROR;
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286 }
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287 }
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288
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289 nevents = epcf->events;
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290
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291 ngx_io = ngx_os_io;
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292
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293 ngx_event_actions = ngx_epoll_module_ctx.actions;
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294
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18
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295 #if (NGX_HAVE_CLEAR_EVENT)
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0
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296 ngx_event_flags = NGX_USE_CLEAR_EVENT
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297 #else
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298 ngx_event_flags = NGX_USE_LEVEL_EVENT
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299 #endif
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4
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300 |NGX_USE_GREEDY_EVENT
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0
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301 |NGX_USE_EPOLL_EVENT;
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302
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303 return NGX_OK;
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304 }
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305
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306
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48
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307 static void
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308 ngx_epoll_done(ngx_cycle_t *cycle)
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0
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309 {
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310 if (close(ep) == -1) {
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311 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
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312 "epoll close() failed");
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313 }
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314
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315 ep = -1;
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316
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529
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317 #if (NGX_HAVE_FILE_AIO)
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318
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319 if (io_destroy(ngx_aio_ctx) != 0) {
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320 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
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321 "io_destroy() failed");
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322 }
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323
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324 ngx_aio_ctx = 0;
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325
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326 #endif
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327
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0
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328 ngx_free(event_list);
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329
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330 event_list = NULL;
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331 nevents = 0;
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332 }
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333
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334
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48
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335 static ngx_int_t
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324
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336 ngx_epoll_add_event(ngx_event_t *ev, ngx_int_t event, ngx_uint_t flags)
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0
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337 {
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32
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338 int op;
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339 uint32_t events, prev;
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0
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340 ngx_event_t *e;
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341 ngx_connection_t *c;
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342 struct epoll_event ee;
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343
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344 c = ev->data;
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345
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32
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346 events = (uint32_t) event;
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347
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0
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348 if (event == NGX_READ_EVENT) {
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349 e = c->write;
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350 prev = EPOLLOUT;
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351 #if (NGX_READ_EVENT != EPOLLIN)
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32
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352 events = EPOLLIN;
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0
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353 #endif
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354
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355 } else {
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356 e = c->read;
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357 prev = EPOLLIN;
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358 #if (NGX_WRITE_EVENT != EPOLLOUT)
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32
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359 events = EPOLLOUT;
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0
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360 #endif
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361 }
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362
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363 if (e->active) {
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364 op = EPOLL_CTL_MOD;
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32
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365 events |= prev;
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0
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366
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367 } else {
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368 op = EPOLL_CTL_ADD;
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369 }
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370
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324
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371 ee.events = events | (uint32_t) flags;
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130
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372 ee.data.ptr = (void *) ((uintptr_t) c | ev->instance);
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0
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373
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374 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0,
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10
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375 "epoll add event: fd:%d op:%d ev:%08XD",
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0
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376 c->fd, op, ee.events);
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377
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378 if (epoll_ctl(ep, op, c->fd, &ee) == -1) {
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379 ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_errno,
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380 "epoll_ctl(%d, %d) failed", op, c->fd);
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381 return NGX_ERROR;
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382 }
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383
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384 ev->active = 1;
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385 #if 0
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386 ev->oneshot = (flags & NGX_ONESHOT_EVENT) ? 1 : 0;
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387 #endif
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388
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389 return NGX_OK;
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390 }
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391
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392
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48
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393 static ngx_int_t
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324
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394 ngx_epoll_del_event(ngx_event_t *ev, ngx_int_t event, ngx_uint_t flags)
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0
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395 {
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32
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396 int op;
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397 uint32_t prev;
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0
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398 ngx_event_t *e;
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399 ngx_connection_t *c;
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400 struct epoll_event ee;
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401
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402 /*
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32
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403 * when the file descriptor is closed, the epoll automatically deletes
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404 * it from its queue, so we do not need to delete explicity the event
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0
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405 * before the closing the file descriptor
|
|
|
406 */
|
|
|
407
|
|
|
408 if (flags & NGX_CLOSE_EVENT) {
|
|
|
409 ev->active = 0;
|
|
|
410 return NGX_OK;
|
|
|
411 }
|
|
|
412
|
|
|
413 c = ev->data;
|
|
|
414
|
|
|
415 if (event == NGX_READ_EVENT) {
|
|
|
416 e = c->write;
|
|
|
417 prev = EPOLLOUT;
|
|
|
418
|
|
|
419 } else {
|
|
|
420 e = c->read;
|
|
|
421 prev = EPOLLIN;
|
|
|
422 }
|
|
|
423
|
|
|
424 if (e->active) {
|
|
|
425 op = EPOLL_CTL_MOD;
|
|
324
|
426 ee.events = prev | (uint32_t) flags;
|
|
130
|
427 ee.data.ptr = (void *) ((uintptr_t) c | ev->instance);
|
|
0
|
428
|
|
|
429 } else {
|
|
|
430 op = EPOLL_CTL_DEL;
|
|
|
431 ee.events = 0;
|
|
|
432 ee.data.ptr = NULL;
|
|
|
433 }
|
|
|
434
|
|
|
435 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0,
|
|
10
|
436 "epoll del event: fd:%d op:%d ev:%08XD",
|
|
0
|
437 c->fd, op, ee.events);
|
|
|
438
|
|
|
439 if (epoll_ctl(ep, op, c->fd, &ee) == -1) {
|
|
|
440 ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_errno,
|
|
|
441 "epoll_ctl(%d, %d) failed", op, c->fd);
|
|
|
442 return NGX_ERROR;
|
|
|
443 }
|
|
|
444
|
|
|
445 ev->active = 0;
|
|
|
446
|
|
|
447 return NGX_OK;
|
|
|
448 }
|
|
|
449
|
|
|
450
|
|
48
|
451 static ngx_int_t
|
|
|
452 ngx_epoll_add_connection(ngx_connection_t *c)
|
|
0
|
453 {
|
|
|
454 struct epoll_event ee;
|
|
|
455
|
|
|
456 ee.events = EPOLLIN|EPOLLOUT|EPOLLET;
|
|
130
|
457 ee.data.ptr = (void *) ((uintptr_t) c | c->read->instance);
|
|
0
|
458
|
|
|
459 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
10
|
460 "epoll add connection: fd:%d ev:%08XD", c->fd, ee.events);
|
|
0
|
461
|
|
|
462 if (epoll_ctl(ep, EPOLL_CTL_ADD, c->fd, &ee) == -1) {
|
|
|
463 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
|
464 "epoll_ctl(EPOLL_CTL_ADD, %d) failed", c->fd);
|
|
|
465 return NGX_ERROR;
|
|
|
466 }
|
|
|
467
|
|
|
468 c->read->active = 1;
|
|
|
469 c->write->active = 1;
|
|
|
470
|
|
|
471 return NGX_OK;
|
|
|
472 }
|
|
|
473
|
|
|
474
|
|
48
|
475 static ngx_int_t
|
|
324
|
476 ngx_epoll_del_connection(ngx_connection_t *c, ngx_uint_t flags)
|
|
0
|
477 {
|
|
324
|
478 int op;
|
|
|
479 struct epoll_event ee;
|
|
0
|
480
|
|
|
481 /*
|
|
|
482 * when the file descriptor is closed the epoll automatically deletes
|
|
|
483 * it from its queue so we do not need to delete explicity the event
|
|
|
484 * before the closing the file descriptor
|
|
|
485 */
|
|
|
486
|
|
|
487 if (flags & NGX_CLOSE_EVENT) {
|
|
|
488 c->read->active = 0;
|
|
|
489 c->write->active = 0;
|
|
|
490 return NGX_OK;
|
|
|
491 }
|
|
|
492
|
|
|
493 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
494 "epoll del connection: fd:%d", c->fd);
|
|
|
495
|
|
|
496 op = EPOLL_CTL_DEL;
|
|
|
497 ee.events = 0;
|
|
130
|
498 ee.data.ptr = NULL;
|
|
0
|
499
|
|
|
500 if (epoll_ctl(ep, op, c->fd, &ee) == -1) {
|
|
|
501 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
|
502 "epoll_ctl(%d, %d) failed", op, c->fd);
|
|
|
503 return NGX_ERROR;
|
|
|
504 }
|
|
|
505
|
|
|
506 c->read->active = 0;
|
|
|
507 c->write->active = 0;
|
|
|
508
|
|
|
509 return NGX_OK;
|
|
|
510 }
|
|
|
511
|
|
|
512
|
|
48
|
513 static ngx_int_t
|
|
112
|
514 ngx_epoll_process_events(ngx_cycle_t *cycle, ngx_msec_t timer, ngx_uint_t flags)
|
|
0
|
515 {
|
|
|
516 int events;
|
|
32
|
517 uint32_t revents;
|
|
0
|
518 ngx_int_t instance, i;
|
|
112
|
519 ngx_uint_t level;
|
|
0
|
520 ngx_err_t err;
|
|
|
521 ngx_log_t *log;
|
|
112
|
522 ngx_event_t *rev, *wev, **queue;
|
|
0
|
523 ngx_connection_t *c;
|
|
|
524
|
|
|
525 /* NGX_TIMER_INFINITE == INFTIM */
|
|
|
526
|
|
|
527 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
106
|
528 "epoll timer: %M", timer);
|
|
0
|
529
|
|
324
|
530 events = epoll_wait(ep, event_list, (int) nevents, timer);
|
|
0
|
531
|
|
529
|
532 err = (events == -1) ? ngx_errno : 0;
|
|
0
|
533
|
|
579
|
534 if (flags & NGX_UPDATE_TIME || ngx_event_timer_alarm) {
|
|
|
535 ngx_time_update();
|
|
112
|
536 }
|
|
0
|
537
|
|
|
538 if (err) {
|
|
112
|
539 if (err == NGX_EINTR) {
|
|
|
540
|
|
|
541 if (ngx_event_timer_alarm) {
|
|
|
542 ngx_event_timer_alarm = 0;
|
|
|
543 return NGX_OK;
|
|
|
544 }
|
|
126
|
545
|
|
112
|
546 level = NGX_LOG_INFO;
|
|
126
|
547
|
|
|
548 } else {
|
|
112
|
549 level = NGX_LOG_ALERT;
|
|
|
550 }
|
|
|
551
|
|
|
552 ngx_log_error(level, cycle->log, err, "epoll_wait() failed");
|
|
0
|
553 return NGX_ERROR;
|
|
|
554 }
|
|
|
555
|
|
112
|
556 if (events == 0) {
|
|
116
|
557 if (timer != NGX_TIMER_INFINITE) {
|
|
|
558 return NGX_OK;
|
|
|
559 }
|
|
|
560
|
|
|
561 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
|
|
|
562 "epoll_wait() returned no events without timeout");
|
|
|
563 return NGX_ERROR;
|
|
112
|
564 }
|
|
0
|
565
|
|
112
|
566 ngx_mutex_lock(ngx_posted_events_mutex);
|
|
0
|
567
|
|
|
568 log = cycle->log;
|
|
|
569
|
|
|
570 for (i = 0; i < events; i++) {
|
|
|
571 c = event_list[i].data.ptr;
|
|
|
572
|
|
|
573 instance = (uintptr_t) c & 1;
|
|
|
574 c = (ngx_connection_t *) ((uintptr_t) c & (uintptr_t) ~1);
|
|
|
575
|
|
|
576 rev = c->read;
|
|
|
577
|
|
|
578 if (c->fd == -1 || rev->instance != instance) {
|
|
|
579
|
|
|
580 /*
|
|
|
581 * the stale event from a file descriptor
|
|
|
582 * that was just closed in this iteration
|
|
|
583 */
|
|
|
584
|
|
|
585 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
10
|
586 "epoll: stale event %p", c);
|
|
0
|
587 continue;
|
|
|
588 }
|
|
|
589
|
|
|
590 #if (NGX_DEBUG0)
|
|
|
591 log = c->log ? c->log : cycle->log;
|
|
|
592 #endif
|
|
|
593
|
|
32
|
594 revents = event_list[i].events;
|
|
|
595
|
|
0
|
596 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, log, 0,
|
|
10
|
597 "epoll: fd:%d ev:%04XD d:%p",
|
|
126
|
598 c->fd, revents, event_list[i].data.ptr);
|
|
0
|
599
|
|
32
|
600 if (revents & (EPOLLERR|EPOLLHUP)) {
|
|
0
|
601 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, log, 0,
|
|
10
|
602 "epoll_wait() error on fd:%d ev:%04XD",
|
|
32
|
603 c->fd, revents);
|
|
|
604 }
|
|
|
605
|
|
212
|
606 #if 0
|
|
32
|
607 if (revents & ~(EPOLLIN|EPOLLOUT|EPOLLERR|EPOLLHUP)) {
|
|
|
608 ngx_log_error(NGX_LOG_ALERT, log, 0,
|
|
|
609 "strange epoll_wait() events fd:%d ev:%04XD",
|
|
|
610 c->fd, revents);
|
|
0
|
611 }
|
|
212
|
612 #endif
|
|
0
|
613
|
|
32
|
614 if ((revents & (EPOLLERR|EPOLLHUP))
|
|
|
615 && (revents & (EPOLLIN|EPOLLOUT)) == 0)
|
|
|
616 {
|
|
|
617 /*
|
|
|
618 * if the error events were returned without EPOLLIN or EPOLLOUT,
|
|
|
619 * then add these flags to handle the events at least in one
|
|
|
620 * active handler
|
|
|
621 */
|
|
|
622
|
|
|
623 revents |= EPOLLIN|EPOLLOUT;
|
|
0
|
624 }
|
|
|
625
|
|
112
|
626 if ((revents & EPOLLIN) && rev->active) {
|
|
|
627
|
|
|
628 if ((flags & NGX_POST_THREAD_EVENTS) && !rev->accept) {
|
|
|
629 rev->posted_ready = 1;
|
|
|
630
|
|
|
631 } else {
|
|
|
632 rev->ready = 1;
|
|
|
633 }
|
|
|
634
|
|
|
635 if (flags & NGX_POST_EVENTS) {
|
|
|
636 queue = (ngx_event_t **) (rev->accept ?
|
|
|
637 &ngx_posted_accept_events : &ngx_posted_events);
|
|
|
638
|
|
|
639 ngx_locked_post_event(rev, queue);
|
|
|
640
|
|
|
641 } else {
|
|
|
642 rev->handler(rev);
|
|
|
643 }
|
|
|
644 }
|
|
|
645
|
|
0
|
646 wev = c->write;
|
|
|
647
|
|
32
|
648 if ((revents & EPOLLOUT) && wev->active) {
|
|
|
649
|
|
112
|
650 if (flags & NGX_POST_THREAD_EVENTS) {
|
|
0
|
651 wev->posted_ready = 1;
|
|
|
652
|
|
|
653 } else {
|
|
|
654 wev->ready = 1;
|
|
|
655 }
|
|
|
656
|
|
112
|
657 if (flags & NGX_POST_EVENTS) {
|
|
|
658 ngx_locked_post_event(wev, &ngx_posted_events);
|
|
0
|
659
|
|
112
|
660 } else {
|
|
|
661 wev->handler(wev);
|
|
0
|
662 }
|
|
|
663 }
|
|
|
664 }
|
|
|
665
|
|
112
|
666 ngx_mutex_unlock(ngx_posted_events_mutex);
|
|
0
|
667
|
|
|
668 return NGX_OK;
|
|
|
669 }
|
|
|
670
|
|
|
671
|
|
529
|
672 #if (NGX_HAVE_FILE_AIO)
|
|
|
673
|
|
|
674 static void
|
|
|
675 ngx_epoll_eventfd_handler(ngx_event_t *ev)
|
|
|
676 {
|
|
|
677 int n;
|
|
|
678 long i, events;
|
|
|
679 uint64_t ready;
|
|
|
680 ngx_err_t err;
|
|
|
681 ngx_event_t *e;
|
|
|
682 ngx_event_aio_t *aio;
|
|
|
683 struct io_event event[64];
|
|
|
684 struct timespec ts;
|
|
|
685
|
|
|
686 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, 0, "eventfd handler");
|
|
|
687
|
|
|
688 n = read(ngx_eventfd, &ready, 8);
|
|
|
689
|
|
|
690 err = ngx_errno;
|
|
|
691
|
|
|
692 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, ev->log, 0, "eventfd: %d", n);
|
|
|
693
|
|
|
694 if (n != 8) {
|
|
|
695 if (n == -1) {
|
|
|
696 if (err == NGX_EAGAIN) {
|
|
|
697 return;
|
|
|
698 }
|
|
|
699
|
|
|
700 ngx_log_error(NGX_LOG_ALERT, ev->log, err, "read(eventfd) failed");
|
|
|
701 return;
|
|
|
702 }
|
|
|
703
|
|
|
704 ngx_log_error(NGX_LOG_ALERT, ev->log, 0,
|
|
|
705 "read(eventfd) returned only %d bytes", n);
|
|
|
706 return;
|
|
|
707 }
|
|
|
708
|
|
|
709 ts.tv_sec = 0;
|
|
|
710 ts.tv_nsec = 0;
|
|
|
711
|
|
|
712 while (ready) {
|
|
|
713
|
|
|
714 events = io_getevents(ngx_aio_ctx, 1, 64, event, &ts);
|
|
|
715
|
|
|
716 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, ev->log, 0,
|
|
|
717 "io_getevents: %l", events);
|
|
|
718
|
|
|
719 if (events > 0) {
|
|
|
720 ready -= events;
|
|
|
721
|
|
|
722 for (i = 0; i < events; i++) {
|
|
|
723
|
|
|
724 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, ev->log, 0,
|
|
|
725 "io_event: %uXL %uXL %L %L",
|
|
|
726 event[i].data, event[i].obj,
|
|
|
727 event[i].res, event[i].res2);
|
|
|
728
|
|
|
729 e = (ngx_event_t *) (uintptr_t) event[i].data;
|
|
|
730
|
|
|
731 e->complete = 1;
|
|
|
732 e->active = 0;
|
|
|
733 e->ready = 1;
|
|
|
734
|
|
|
735 aio = e->data;
|
|
|
736 aio->res = event[i].res;
|
|
|
737
|
|
|
738 ngx_post_event(e, &ngx_posted_events);
|
|
|
739 }
|
|
|
740
|
|
|
741 continue;
|
|
|
742 }
|
|
|
743
|
|
|
744 if (events == 0) {
|
|
|
745 return;
|
|
|
746 }
|
|
|
747
|
|
|
748 /* events < 0 */
|
|
|
749 ngx_log_error(NGX_LOG_ALERT, ev->log, -events, "io_getevents() failed");
|
|
|
750 return;
|
|
|
751 }
|
|
|
752 }
|
|
|
753
|
|
|
754 #endif
|
|
|
755
|
|
|
756
|
|
48
|
757 static void *
|
|
|
758 ngx_epoll_create_conf(ngx_cycle_t *cycle)
|
|
0
|
759 {
|
|
|
760 ngx_epoll_conf_t *epcf;
|
|
|
761
|
|
50
|
762 epcf = ngx_palloc(cycle->pool, sizeof(ngx_epoll_conf_t));
|
|
|
763 if (epcf == NULL) {
|
|
505
|
764 return NULL;
|
|
50
|
765 }
|
|
0
|
766
|
|
|
767 epcf->events = NGX_CONF_UNSET;
|
|
|
768
|
|
|
769 return epcf;
|
|
|
770 }
|
|
|
771
|
|
|
772
|
|
48
|
773 static char *
|
|
|
774 ngx_epoll_init_conf(ngx_cycle_t *cycle, void *conf)
|
|
0
|
775 {
|
|
|
776 ngx_epoll_conf_t *epcf = conf;
|
|
|
777
|
|
212
|
778 ngx_conf_init_uint_value(epcf->events, 512);
|
|
0
|
779
|
|
|
780 return NGX_CONF_OK;
|
|
|
781 }
|
