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 #include <ngx_kqueue_module.h>
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11
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12
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13 typedef struct {
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14 int changes;
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15 int events;
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16 } ngx_kqueue_conf_t;
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17
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18
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19 static ngx_int_t ngx_kqueue_init(ngx_cycle_t *cycle);
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20 static void ngx_kqueue_done(ngx_cycle_t *cycle);
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21 static ngx_int_t ngx_kqueue_add_event(ngx_event_t *ev, int event, u_int flags);
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22 static ngx_int_t ngx_kqueue_del_event(ngx_event_t *ev, int event, u_int flags);
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23 static ngx_int_t ngx_kqueue_set_event(ngx_event_t *ev, int filter, u_int flags);
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24 static ngx_int_t ngx_kqueue_process_changes(ngx_cycle_t *cycle, ngx_uint_t try);
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25 static ngx_int_t ngx_kqueue_process_events(ngx_cycle_t *cycle);
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26 static ngx_inline void ngx_kqueue_dump_event(ngx_log_t *log,
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48
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27 struct kevent *kev);
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0
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28
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29 static void *ngx_kqueue_create_conf(ngx_cycle_t *cycle);
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30 static char *ngx_kqueue_init_conf(ngx_cycle_t *cycle, void *conf);
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31
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32
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33 int ngx_kqueue = -1;
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34
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35 /*
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36 * The "change_list" should be declared as ngx_thread_volatile.
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37 * However, the use of the change_list is localized in kqueue functions and
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38 * is protected by the mutex so even the "icc -ipo" should not build the code
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39 * with the race condition. Thus we avoid the declaration to make a more
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40 * readable code.
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41 */
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42
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43 static struct kevent *change_list, *change_list0, *change_list1;
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44 static struct kevent *event_list;
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45 static int max_changes, nchanges, nevents;
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46
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47 #if (NGX_THREADS)
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48 static ngx_mutex_t *list_mutex;
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49 static ngx_mutex_t *kevent_mutex;
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50 #endif
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51
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52
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53
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54 static ngx_str_t kqueue_name = ngx_string("kqueue");
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55
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56 static ngx_command_t ngx_kqueue_commands[] = {
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57
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48
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58 { ngx_string("kqueue_changes"),
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59 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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60 ngx_conf_set_num_slot,
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61 0,
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62 offsetof(ngx_kqueue_conf_t, changes),
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63 NULL },
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0
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64
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48
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65 { ngx_string("kqueue_events"),
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66 NGX_EVENT_CONF|NGX_CONF_TAKE1,
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67 ngx_conf_set_num_slot,
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68 0,
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69 offsetof(ngx_kqueue_conf_t, events),
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70 NULL },
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0
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71
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48
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72 ngx_null_command
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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 ngx_event_module_t ngx_kqueue_module_ctx = {
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77 &kqueue_name,
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78 ngx_kqueue_create_conf, /* create configuration */
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79 ngx_kqueue_init_conf, /* init configuration */
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80
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81 {
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82 ngx_kqueue_add_event, /* add an event */
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83 ngx_kqueue_del_event, /* delete an event */
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84 ngx_kqueue_add_event, /* enable an event */
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85 ngx_kqueue_del_event, /* disable an event */
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86 NULL, /* add an connection */
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87 NULL, /* delete an connection */
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88 ngx_kqueue_process_changes, /* process the changes */
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89 ngx_kqueue_process_events, /* process the events */
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90 ngx_kqueue_init, /* init the events */
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91 ngx_kqueue_done /* done the events */
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92 }
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93
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94 };
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95
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96 ngx_module_t ngx_kqueue_module = {
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58
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97 NGX_MODULE_V1,
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0
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98 &ngx_kqueue_module_ctx, /* module context */
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99 ngx_kqueue_commands, /* module directives */
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100 NGX_EVENT_MODULE, /* module type */
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101 NULL, /* init module */
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102 NULL /* init process */
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103 };
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104
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105
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106
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48
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107 static ngx_int_t
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108 ngx_kqueue_init(ngx_cycle_t *cycle)
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0
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109 {
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110 struct timespec ts;
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111 ngx_kqueue_conf_t *kcf;
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112
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113 kcf = ngx_event_get_conf(cycle->conf_ctx, ngx_kqueue_module);
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114
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115 if (ngx_kqueue == -1) {
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116 ngx_kqueue = kqueue();
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117
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118 if (ngx_kqueue == -1) {
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119 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
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120 "kqueue() failed");
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121 return NGX_ERROR;
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122 }
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123
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124 #if (NGX_THREADS)
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125
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50
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126 list_mutex = ngx_mutex_init(cycle->log, 0);
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127 if (list_mutex == NULL) {
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0
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128 return NGX_ERROR;
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129 }
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130
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50
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131 kevent_mutex = ngx_mutex_init(cycle->log, 0);
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132 if (kevent_mutex == NULL) {
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0
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133 return NGX_ERROR;
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134 }
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135
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136 #endif
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137 }
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138
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139 if (max_changes < kcf->changes) {
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140 if (nchanges) {
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141 ts.tv_sec = 0;
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142 ts.tv_nsec = 0;
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143
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144 if (kevent(ngx_kqueue, change_list, nchanges, NULL, 0, &ts) == -1) {
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145 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
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146 "kevent() failed");
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147 return NGX_ERROR;
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148 }
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149 nchanges = 0;
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150 }
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151
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152 if (change_list0) {
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153 ngx_free(change_list0);
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154 }
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155
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156 change_list0 = ngx_alloc(kcf->changes * sizeof(struct kevent),
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157 cycle->log);
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158 if (change_list0 == NULL) {
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159 return NGX_ERROR;
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160 }
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161
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162 if (change_list1) {
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163 ngx_free(change_list1);
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164 }
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165
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166 change_list1 = ngx_alloc(kcf->changes * sizeof(struct kevent),
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167 cycle->log);
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168 if (change_list1 == NULL) {
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169 return NGX_ERROR;
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170 }
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171
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172 change_list = change_list0;
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173 }
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174
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175 max_changes = kcf->changes;
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176
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177 if (nevents < kcf->events) {
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178 if (event_list) {
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179 ngx_free(event_list);
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180 }
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181
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182 event_list = ngx_alloc(kcf->events * sizeof(struct kevent), cycle->log);
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183 if (event_list == NULL) {
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184 return NGX_ERROR;
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185 }
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186 }
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187
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188 nevents = kcf->events;
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189
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190 ngx_io = ngx_os_io;
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191
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192 ngx_event_actions = ngx_kqueue_module_ctx.actions;
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193
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194 ngx_event_flags = NGX_USE_ONESHOT_EVENT
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58
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195 #if 1
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18
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196 #if (NGX_HAVE_CLEAR_EVENT)
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0
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197 |NGX_USE_CLEAR_EVENT
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198 #else
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199 |NGX_USE_LEVEL_EVENT
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200 #endif
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58
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201 #endif
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4
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202 #if (NGX_HAVE_LOWAT_EVENT)
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203 |NGX_USE_LOWAT_EVENT
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0
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204 #endif
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4
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205 |NGX_USE_KQUEUE_EVENT;
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0
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206
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207 return NGX_OK;
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208 }
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209
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210
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48
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211 static void
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212 ngx_kqueue_done(ngx_cycle_t *cycle)
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0
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213 {
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214 if (close(ngx_kqueue) == -1) {
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215 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
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216 "kqueue close() failed");
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217 }
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218
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219 ngx_kqueue = -1;
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220
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221 #if (NGX_THREADS)
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222 ngx_mutex_destroy(kevent_mutex);
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223 ngx_mutex_destroy(list_mutex);
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224 #endif
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225
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226 ngx_free(change_list1);
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227 ngx_free(change_list0);
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228 ngx_free(event_list);
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229
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230 change_list1 = NULL;
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231 change_list0 = NULL;
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232 change_list = NULL;
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233 event_list = NULL;
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234 max_changes = 0;
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235 nchanges = 0;
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236 nevents = 0;
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237 }
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238
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239
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48
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240 static ngx_int_t
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241 ngx_kqueue_add_event(ngx_event_t *ev, int event, u_int flags)
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0
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242 {
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243 ngx_int_t rc;
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244 ngx_event_t *e;
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245 ngx_connection_t *c;
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246
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247 ev->active = 1;
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248 ev->disabled = 0;
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249 ev->oneshot = (flags & NGX_ONESHOT_EVENT) ? 1 : 0;
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250
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251 if (ngx_mutex_lock(list_mutex) == NGX_ERROR) {
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252 return NGX_ERROR;
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253 }
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254
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4
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255 #if 1
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256
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0
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257 if (nchanges > 0
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258 && ev->index < (u_int) nchanges
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259 && ((uintptr_t) change_list[ev->index].udata & (uintptr_t) ~1)
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260 == (uintptr_t) ev)
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261 {
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262 if (change_list[ev->index].flags == EV_DISABLE) {
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263
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264 /*
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265 * if the EV_DISABLE is still not passed to a kernel
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266 * we will not pass it
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267 */
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268
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269 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0,
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270 "kevent activated: %d: ft:%d",
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271 ngx_event_ident(ev->data), event);
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272
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273 if (ev->index < (u_int) --nchanges) {
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4
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274 e = (ngx_event_t *)
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275 ((uintptr_t) change_list[nchanges].udata & (uintptr_t) ~1);
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0
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276 change_list[ev->index] = change_list[nchanges];
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277 e->index = ev->index;
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278 }
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279
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280 ngx_mutex_unlock(list_mutex);
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281
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282 return NGX_OK;
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283 }
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284
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285 c = ev->data;
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286
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287 ngx_log_error(NGX_LOG_ALERT, ev->log, 0,
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288 "previous event on #%d were not passed in kernel", c->fd);
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289
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290 ngx_mutex_unlock(list_mutex);
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291
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292 return NGX_ERROR;
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293 }
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294
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4
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295 #endif
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296
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0
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297 rc = ngx_kqueue_set_event(ev, event, EV_ADD|EV_ENABLE|flags);
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298
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299 ngx_mutex_unlock(list_mutex);
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300
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301 return rc;
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302 }
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303
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304
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48
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305 static ngx_int_t
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306 ngx_kqueue_del_event(ngx_event_t *ev, int event, u_int flags)
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0
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307 {
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308 ngx_int_t rc;
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309 ngx_event_t *e;
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310
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311 ev->active = 0;
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312 ev->disabled = 0;
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313
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314 if (ngx_mutex_lock(list_mutex) == NGX_ERROR) {
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315 return NGX_ERROR;
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316 }
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317
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4
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318 #if 1
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319
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0
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320 if (nchanges > 0
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321 && ev->index < (u_int) nchanges
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322 && ((uintptr_t) change_list[ev->index].udata & (uintptr_t) ~1)
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323 == (uintptr_t) ev)
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324 {
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325 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0,
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326 "kevent deleted: %d: ft:%d",
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327 ngx_event_ident(ev->data), event);
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328
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329 /* if the event is still not passed to a kernel we will not pass it */
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330
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331 if (ev->index < (u_int) --nchanges) {
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4
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332 e = (ngx_event_t *)
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333 ((uintptr_t) change_list[nchanges].udata & (uintptr_t) ~1);
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0
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334 change_list[ev->index] = change_list[nchanges];
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335 e->index = ev->index;
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336 }
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337
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338 ngx_mutex_unlock(list_mutex);
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339
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340 return NGX_OK;
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341 }
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342
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4
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343 #endif
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344
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0
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345 /*
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346 * when the file descriptor is closed the kqueue automatically deletes
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347 * its filters so we do not need to delete explicity the event
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348 * before the closing the file descriptor.
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349 */
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350
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351 if (flags & NGX_CLOSE_EVENT) {
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352 ngx_mutex_unlock(list_mutex);
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353 return NGX_OK;
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354 }
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355
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356 if (flags & NGX_DISABLE_EVENT) {
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357 ev->disabled = 1;
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358 }
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359
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360 rc = ngx_kqueue_set_event(ev, event,
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361 flags & NGX_DISABLE_EVENT ? EV_DISABLE : EV_DELETE);
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362
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363 ngx_mutex_unlock(list_mutex);
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364
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365 return rc;
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366 }
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367
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368
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48
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369 static ngx_int_t
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370 ngx_kqueue_set_event(ngx_event_t *ev, int filter, u_int flags)
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0
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371 {
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372 struct kevent *kev;
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373 struct timespec ts;
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374 ngx_connection_t *c;
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375
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376 c = ev->data;
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377
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378 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
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10
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379 "kevent set event: %d: ft:%d fl:%04Xd",
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0
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380 c->fd, filter, flags);
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381
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382 if (nchanges >= max_changes) {
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383 ngx_log_error(NGX_LOG_WARN, ev->log, 0,
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384 "kqueue change list is filled up");
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385
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386 ts.tv_sec = 0;
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387 ts.tv_nsec = 0;
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388
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389 if (kevent(ngx_kqueue, change_list, nchanges, NULL, 0, &ts) == -1) {
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390 ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_errno, "kevent() failed");
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391 return NGX_ERROR;
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392 }
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393
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394 nchanges = 0;
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395 }
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396
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397 kev = &change_list[nchanges];
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398
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399 kev->ident = c->fd;
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400 kev->filter = filter;
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401 kev->flags = flags;
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38
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402 kev->udata = NGX_KQUEUE_UDATA_T ((uintptr_t) ev | ev->instance);
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0
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403
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404 if (filter == EVFILT_VNODE) {
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405 kev->fflags = NOTE_DELETE|NOTE_WRITE|NOTE_EXTEND
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406 |NOTE_ATTRIB|NOTE_RENAME
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407 #if (__FreeBSD__ == 4 && __FreeBSD_version >= 430000) \
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408 || __FreeBSD_version >= 500018
|
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409 |NOTE_REVOKE
|
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410 #endif
|
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411 ;
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412 kev->data = 0;
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413
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414 } else {
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4
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415 #if (NGX_HAVE_LOWAT_EVENT)
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0
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416 if (flags & NGX_LOWAT_EVENT) {
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417 kev->fflags = NOTE_LOWAT;
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418 kev->data = ev->available;
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419
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420 } else {
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421 kev->fflags = 0;
|
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422 kev->data = 0;
|
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423 }
|
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424 #else
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425 kev->fflags = 0;
|
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426 kev->data = 0;
|
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427 #endif
|
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428 }
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429
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430 ev->index = nchanges;
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431 nchanges++;
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432
|
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433 return NGX_OK;
|
|
434 }
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435
|
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436
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48
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437 static ngx_int_t
|
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438 ngx_kqueue_process_events(ngx_cycle_t *cycle)
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0
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439 {
|
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440 int events, n;
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441 ngx_int_t i, instance;
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442 ngx_uint_t lock, accept_lock, expire;
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443 ngx_err_t err;
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444 ngx_msec_t timer;
|
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445 ngx_event_t *ev;
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446 ngx_epoch_msec_t delta;
|
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447 struct timeval tv;
|
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448 struct timespec ts, *tp;
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449
|
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450 for ( ;; ) {
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451 timer = ngx_event_find_timer();
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452
|
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453 #if (NGX_THREADS)
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454
|
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455 if (timer == NGX_TIMER_ERROR) {
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456 return NGX_ERROR;
|
|
457 }
|
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458
|
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459 if (timer == NGX_TIMER_INFINITE || timer > 500) {
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460 timer = 500;
|
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461 break;
|
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462 }
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463
|
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464 #endif
|
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465
|
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466 if (timer != 0) {
|
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467 break;
|
|
468 }
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469
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470 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
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471 "kevent expired timer");
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472
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473 ngx_event_expire_timers((ngx_msec_t)
|
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474 (ngx_elapsed_msec - ngx_old_elapsed_msec));
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475
|
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476 if (ngx_posted_events && ngx_threaded) {
|
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477 ngx_wakeup_worker_thread(cycle);
|
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478 }
|
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479 }
|
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480
|
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481 ngx_old_elapsed_msec = ngx_elapsed_msec;
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482 expire = 1;
|
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483 accept_lock = 0;
|
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484
|
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485 if (ngx_accept_mutex) {
|
|
486 if (ngx_accept_disabled > 0) {
|
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487 ngx_accept_disabled--;
|
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488
|
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489 } else {
|
|
490 if (ngx_trylock_accept_mutex(cycle) == NGX_ERROR) {
|
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491 return NGX_ERROR;
|
|
492 }
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|
493
|
|
494 if (ngx_accept_mutex_held) {
|
|
495 accept_lock = 1;
|
|
496
|
|
497 } else if (timer == NGX_TIMER_INFINITE
|
|
498 || timer > ngx_accept_mutex_delay)
|
|
499 {
|
|
500 timer = ngx_accept_mutex_delay;
|
|
501 expire = 0;
|
|
502 }
|
|
503 }
|
|
504 }
|
|
505
|
|
506 if (ngx_threaded) {
|
|
507 if (ngx_kqueue_process_changes(cycle, 0) == NGX_ERROR) {
|
|
508 ngx_accept_mutex_unlock();
|
|
509 return NGX_ERROR;
|
|
510 }
|
|
511
|
|
512 n = 0;
|
|
513
|
|
514 } else {
|
|
515 n = nchanges;
|
|
516 nchanges = 0;
|
|
517 }
|
|
518
|
|
519 if (timer == NGX_TIMER_INFINITE) {
|
|
520 tp = NULL;
|
|
521 expire = 0;
|
|
522
|
|
523 } else {
|
|
524 ts.tv_sec = timer / 1000;
|
|
525 ts.tv_nsec = (timer % 1000) * 1000000;
|
|
526 tp = &ts;
|
|
527 }
|
|
528
|
|
529 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
530 "kevent timer: %d, changes: %d", timer, n);
|
|
531
|
|
532 events = kevent(ngx_kqueue, change_list, n, event_list, nevents, tp);
|
|
533
|
|
534 if (events == -1) {
|
|
535 err = ngx_errno;
|
|
536 } else {
|
|
537 err = 0;
|
|
538 }
|
|
539
|
|
540 ngx_gettimeofday(&tv);
|
|
541 ngx_time_update(tv.tv_sec);
|
|
542
|
|
543 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
544 "kevent events: %d", events);
|
|
545
|
|
546 delta = ngx_elapsed_msec;
|
|
547 ngx_elapsed_msec = (ngx_epoch_msec_t) tv.tv_sec * 1000
|
|
548 + tv.tv_usec / 1000 - ngx_start_msec;
|
|
549
|
|
550 if (err) {
|
|
551 ngx_log_error((err == NGX_EINTR) ? NGX_LOG_INFO : NGX_LOG_ALERT,
|
|
552 cycle->log, err, "kevent() failed");
|
|
553 ngx_accept_mutex_unlock();
|
|
554 return NGX_ERROR;
|
|
555 }
|
|
556
|
|
557 if (timer != NGX_TIMER_INFINITE) {
|
|
558 delta = ngx_elapsed_msec - delta;
|
|
559
|
|
560 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
561 "kevent timer: %d, delta: %d", timer, (int) delta);
|
|
562
|
|
563 } else {
|
|
564 if (events == 0) {
|
|
565 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
|
|
566 "kevent() returned no events without timeout");
|
|
567 ngx_accept_mutex_unlock();
|
|
568 return NGX_ERROR;
|
|
569 }
|
|
570 }
|
|
571
|
|
572 if (events > 0) {
|
|
573 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
|
|
574 ngx_accept_mutex_unlock();
|
|
575 return NGX_ERROR;
|
|
576 }
|
|
577
|
|
578 lock = 1;
|
|
579
|
|
580 } else {
|
|
581 lock =0;
|
|
582 }
|
|
583
|
|
584 for (i = 0; i < events; i++) {
|
|
585
|
|
586 ngx_kqueue_dump_event(cycle->log, &event_list[i]);
|
|
587
|
|
588 if (event_list[i].flags & EV_ERROR) {
|
|
589 ngx_log_error(NGX_LOG_ALERT, cycle->log, event_list[i].data,
|
|
590 "kevent() error on %d", event_list[i].ident);
|
|
591 continue;
|
|
592 }
|
|
593
|
|
594 ev = (ngx_event_t *) event_list[i].udata;
|
|
595
|
|
596 switch (event_list[i].filter) {
|
|
597
|
|
598 case EVFILT_READ:
|
|
599 case EVFILT_WRITE:
|
|
600
|
|
601 instance = (uintptr_t) ev & 1;
|
|
602 ev = (ngx_event_t *) ((uintptr_t) ev & (uintptr_t) ~1);
|
|
603
|
|
604 if (ev->closed || ev->instance != instance) {
|
|
605
|
|
606 /*
|
|
607 * the stale event from a file descriptor
|
|
608 * that was just closed in this iteration
|
|
609 */
|
|
610
|
|
611 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
10
|
612 "kevent: stale event %p", ev);
|
0
|
613 continue;
|
|
614 }
|
|
615
|
|
616 if (ev->log && (ev->log->log_level & NGX_LOG_DEBUG_CONNECTION)) {
|
|
617 ngx_kqueue_dump_event(ev->log, &event_list[i]);
|
|
618 }
|
|
619
|
58
|
620 if (ev->oneshot) {
|
|
621 ev->active = 0;
|
|
622 }
|
|
623
|
0
|
624 #if (NGX_THREADS)
|
|
625
|
|
626 if (ngx_threaded && !ev->accept) {
|
|
627 ev->posted_ready = 1;
|
|
628 ev->posted_available = event_list[i].data;
|
|
629
|
|
630 if (event_list[i].flags & EV_EOF) {
|
|
631 ev->posted_eof = 1;
|
|
632 ev->posted_errno = event_list[i].fflags;
|
|
633 }
|
|
634
|
|
635 ngx_post_event(ev);
|
|
636
|
|
637 continue;
|
|
638 }
|
|
639
|
|
640 #endif
|
|
641
|
|
642 ev->available = event_list[i].data;
|
|
643
|
|
644 if (event_list[i].flags & EV_EOF) {
|
|
645 ev->pending_eof = 1;
|
|
646 ev->kq_errno = event_list[i].fflags;
|
|
647 }
|
|
648
|
|
649 ev->ready = 1;
|
|
650
|
|
651 break;
|
|
652
|
|
653 case EVFILT_VNODE:
|
|
654 ev->kq_vnode = 1;
|
|
655
|
|
656 break;
|
|
657
|
|
658 case EVFILT_AIO:
|
|
659 ev->complete = 1;
|
|
660 ev->ready = 1;
|
|
661
|
|
662 break;
|
|
663
|
|
664 default:
|
|
665 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
|
|
666 "unexpected kevent() filter %d",
|
|
667 event_list[i].filter);
|
|
668 continue;
|
|
669 }
|
|
670
|
|
671 if (!ngx_threaded && !ngx_accept_mutex_held) {
|
58
|
672 ev->handler(ev);
|
0
|
673 continue;
|
|
674 }
|
|
675
|
|
676 if (!ev->accept) {
|
|
677 ngx_post_event(ev);
|
|
678 continue;
|
|
679 }
|
|
680
|
|
681 if (ngx_accept_disabled > 0) {
|
|
682 continue;
|
|
683 }
|
|
684
|
|
685 ngx_mutex_unlock(ngx_posted_events_mutex);
|
|
686
|
58
|
687 ev->handler(ev);
|
0
|
688
|
|
689 if (ngx_accept_disabled > 0) {
|
|
690 ngx_accept_mutex_unlock();
|
|
691 accept_lock = 0;
|
|
692 }
|
|
693
|
|
694 if (i + 1 == events) {
|
|
695 lock = 0;
|
|
696 break;
|
|
697 }
|
|
698
|
|
699 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
|
|
700 if (accept_lock) {
|
|
701 ngx_accept_mutex_unlock();
|
|
702 }
|
|
703 return NGX_ERROR;
|
|
704 }
|
|
705 }
|
|
706
|
|
707 if (accept_lock) {
|
|
708 ngx_accept_mutex_unlock();
|
|
709 }
|
|
710
|
|
711 if (lock) {
|
|
712 ngx_mutex_unlock(ngx_posted_events_mutex);
|
|
713 }
|
|
714
|
|
715 if (expire && delta) {
|
|
716 ngx_event_expire_timers((ngx_msec_t) delta);
|
|
717 }
|
|
718
|
|
719 if (ngx_posted_events) {
|
|
720 if (ngx_threaded) {
|
|
721 ngx_wakeup_worker_thread(cycle);
|
|
722
|
|
723 } else {
|
|
724 ngx_event_process_posted(cycle);
|
|
725 }
|
|
726 }
|
|
727
|
|
728 return NGX_OK;
|
|
729 }
|
|
730
|
|
731
|
48
|
732 static ngx_int_t
|
|
733 ngx_kqueue_process_changes(ngx_cycle_t *cycle, ngx_uint_t try)
|
0
|
734 {
|
|
735 int n;
|
|
736 ngx_int_t rc;
|
|
737 ngx_err_t err;
|
|
738 struct timespec ts;
|
|
739 struct kevent *changes;
|
|
740
|
|
741 if (ngx_mutex_lock(kevent_mutex) == NGX_ERROR) {
|
|
742 return NGX_ERROR;
|
|
743 }
|
|
744
|
|
745 if (ngx_mutex_lock(list_mutex) == NGX_ERROR) {
|
|
746 ngx_mutex_unlock(kevent_mutex);
|
|
747 return NGX_ERROR;
|
|
748 }
|
|
749
|
|
750 if (nchanges == 0) {
|
|
751 ngx_mutex_unlock(list_mutex);
|
|
752 ngx_mutex_unlock(kevent_mutex);
|
|
753 return NGX_OK;
|
|
754 }
|
|
755
|
|
756 changes = change_list;
|
|
757 if (change_list == change_list0) {
|
|
758 change_list = change_list1;
|
|
759 } else {
|
|
760 change_list = change_list0;
|
|
761 }
|
|
762
|
|
763 n = nchanges;
|
|
764 nchanges = 0;
|
|
765
|
|
766 ngx_mutex_unlock(list_mutex);
|
|
767
|
|
768 ts.tv_sec = 0;
|
|
769 ts.tv_nsec = 0;
|
|
770
|
|
771 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
772 "kevent changes: %d", n);
|
|
773
|
|
774 if (kevent(ngx_kqueue, changes, n, NULL, 0, &ts) == -1) {
|
|
775 err = ngx_errno;
|
|
776 ngx_log_error((err == NGX_EINTR) ? NGX_LOG_INFO : NGX_LOG_ALERT,
|
|
777 cycle->log, err, "kevent() failed");
|
|
778 rc = NGX_ERROR;
|
|
779
|
|
780 } else {
|
|
781 rc = NGX_OK;
|
|
782 }
|
|
783
|
|
784 ngx_mutex_unlock(kevent_mutex);
|
|
785
|
|
786 return rc;
|
|
787 }
|
|
788
|
|
789
|
48
|
790 static ngx_inline void
|
|
791 ngx_kqueue_dump_event(ngx_log_t *log, struct kevent *kev)
|
0
|
792 {
|
|
793 ngx_log_debug6(NGX_LOG_DEBUG_EVENT, log, 0,
|
|
794 (kev->ident > 0x8000000 && kev->ident != (unsigned) -1) ?
|
10
|
795 "kevent: %p: ft:%d fl:%04Xd ff:%08Xd d:%d ud:%p":
|
|
796 "kevent: %d: ft:%d fl:%04Xd ff:%08Xd d:%d ud:%p",
|
0
|
797 kev->ident, kev->filter,
|
|
798 kev->flags, kev->fflags,
|
|
799 kev->data, kev->udata);
|
|
800 }
|
|
801
|
|
802
|
48
|
803 static void *
|
|
804 ngx_kqueue_create_conf(ngx_cycle_t *cycle)
|
0
|
805 {
|
|
806 ngx_kqueue_conf_t *kcf;
|
|
807
|
50
|
808 kcf = ngx_palloc(cycle->pool, sizeof(ngx_kqueue_conf_t));
|
|
809 if (kcf == NULL) {
|
|
810 return NGX_CONF_ERROR;
|
|
811 }
|
0
|
812
|
|
813 kcf->changes = NGX_CONF_UNSET;
|
|
814 kcf->events = NGX_CONF_UNSET;
|
|
815
|
|
816 return kcf;
|
|
817 }
|
|
818
|
|
819
|
48
|
820 static char *
|
|
821 ngx_kqueue_init_conf(ngx_cycle_t *cycle, void *conf)
|
0
|
822 {
|
|
823 ngx_kqueue_conf_t *kcf = conf;
|
|
824
|
|
825 ngx_conf_init_value(kcf->changes, 512);
|
|
826 ngx_conf_init_value(kcf->events, 512);
|
|
827
|
|
828 return NGX_CONF_OK;
|
|
829 }
|