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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 #include <ngx_aio.h>
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11
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18
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12 #if (NGX_HAVE_KQUEUE)
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0
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13 #include <ngx_kqueue_module.h>
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14 #endif
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15
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16
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112
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17 static ngx_int_t ngx_aio_init(ngx_cycle_t *cycle, ngx_msec_t timer);
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0
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18 static void ngx_aio_done(ngx_cycle_t *cycle);
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324
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19 static ngx_int_t ngx_aio_add_event(ngx_event_t *ev, ngx_int_t event,
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20 ngx_uint_t flags);
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21 static ngx_int_t ngx_aio_del_event(ngx_event_t *ev, ngx_int_t event,
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22 ngx_uint_t flags);
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23 static ngx_int_t ngx_aio_del_connection(ngx_connection_t *c, ngx_uint_t flags);
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112
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24 static ngx_int_t ngx_aio_process_events(ngx_cycle_t *cycle, ngx_msec_t timer,
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25 ngx_uint_t flags);
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0
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26
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27
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28 ngx_os_io_t ngx_os_aio = {
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29 ngx_aio_read,
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30 ngx_aio_read_chain,
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354
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31 NULL,
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0
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32 ngx_aio_write,
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33 ngx_aio_write_chain,
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18
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34 0
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0
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35 };
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36
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37
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38 static ngx_str_t aio_name = ngx_string("aio");
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39
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40 ngx_event_module_t ngx_aio_module_ctx = {
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41 &aio_name,
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42 NULL, /* create configuration */
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43 NULL, /* init configuration */
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44
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45 {
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46 ngx_aio_add_event, /* add an event */
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47 ngx_aio_del_event, /* delete an event */
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48 NULL, /* enable an event */
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49 NULL, /* disable an event */
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50 NULL, /* add an connection */
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51 ngx_aio_del_connection, /* delete an connection */
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52 NULL, /* process the changes */
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53 ngx_aio_process_events, /* process the events */
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54 ngx_aio_init, /* init the events */
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55 ngx_aio_done /* done the events */
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56 }
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57
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58 };
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59
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60 ngx_module_t ngx_aio_module = {
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58
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61 NGX_MODULE_V1,
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0
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62 &ngx_aio_module_ctx, /* module context */
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63 NULL, /* module directives */
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64 NGX_EVENT_MODULE, /* module type */
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90
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65 NULL, /* init master */
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0
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66 NULL, /* init module */
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90
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67 NULL, /* init process */
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68 NULL, /* init thread */
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69 NULL, /* exit thread */
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70 NULL, /* exit process */
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71 NULL, /* exit master */
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72 NGX_MODULE_V1_PADDING
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0
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73 };
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74
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75
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76
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18
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77 #if (NGX_HAVE_KQUEUE)
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0
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78
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48
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79 static ngx_int_t
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112
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80 ngx_aio_init(ngx_cycle_t *cycle, ngx_msec_t timer)
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0
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81 {
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112
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82 if (ngx_kqueue_module_ctx.actions.init(cycle, timer) == NGX_ERROR) {
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0
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83 return NGX_ERROR;
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84 }
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85
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86 ngx_io = ngx_os_aio;
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87
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88 ngx_event_flags = NGX_USE_AIO_EVENT;
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89 ngx_event_actions = ngx_aio_module_ctx.actions;
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90
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91
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92 return NGX_OK;
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93 }
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94
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95
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48
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96 static void
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97 ngx_aio_done(ngx_cycle_t *cycle)
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0
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98 {
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99 ngx_kqueue_module_ctx.actions.done(cycle);
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100 }
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101
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102
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48
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103 /* the event adding and deleting are needed for the listening sockets */
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0
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104
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48
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105 static ngx_int_t
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324
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106 ngx_aio_add_event(ngx_event_t *ev, ngx_int_t event, ngx_uint_t flags)
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0
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107 {
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108 return ngx_kqueue_module_ctx.actions.add(ev, event, flags);
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109 }
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110
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111
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48
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112 static ngx_int_t
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324
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113 ngx_aio_del_event(ngx_event_t *ev, ngx_int_t event, ngx_uint_t flags)
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0
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114 {
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115 return ngx_kqueue_module_ctx.actions.del(ev, event, flags);
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116 }
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117
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118
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48
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119 static ngx_int_t
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324
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120 ngx_aio_del_connection(ngx_connection_t *c, ngx_uint_t flags)
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0
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121 {
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122 int rc;
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123
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124 if (c->read->active == 0 && c->write->active == 0) {
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125 return NGX_OK;
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126 }
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127
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10
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128 if (flags & NGX_CLOSE_EVENT) {
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129 return NGX_OK;
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130 }
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131
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0
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132 rc = aio_cancel(c->fd, NULL);
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133
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134 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "aio_cancel: %d", rc);
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135
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136 if (rc == AIO_CANCELED) {
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501
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137 c->read->active = 0;
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138 c->write->active = 0;
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0
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139 return NGX_OK;
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140 }
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141
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142 if (rc == AIO_ALLDONE) {
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501
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143 c->read->active = 0;
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144 c->write->active = 0;
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0
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145 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
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146 "aio_cancel() returned AIO_ALLDONE");
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147 return NGX_OK;
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148 }
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149
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150 if (rc == -1) {
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151 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
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152 "aio_cancel() failed");
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153 return NGX_ERROR;
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154 }
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155
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156 if (rc == AIO_NOTCANCELED) {
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157 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
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158 "aio_cancel() returned AIO_NOTCANCELED");
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159
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160 return NGX_ERROR;
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161 }
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162
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163 return NGX_OK;
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164 }
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165
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166
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48
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167 static ngx_int_t
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112
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168 ngx_aio_process_events(ngx_cycle_t *cycle, ngx_msec_t timer, ngx_uint_t flags)
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0
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169 {
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112
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170 return ngx_kqueue_module_ctx.actions.process_events(cycle, timer, flags);
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0
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171 }
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172
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18
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173 #endif /* NGX_HAVE_KQUEUE */
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