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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112
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12 ngx_thread_volatile ngx_event_t *ngx_posted_accept_events;
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0
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13 ngx_thread_volatile ngx_event_t *ngx_posted_events;
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14
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15 #if (NGX_THREADS)
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16 ngx_mutex_t *ngx_posted_events_mutex;
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17 #endif
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18
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19
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112
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20 void
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21 ngx_event_process_posted(ngx_cycle_t *cycle,
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22 ngx_thread_volatile ngx_event_t **posted)
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0
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23 {
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24 ngx_event_t *ev;
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25
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26 for ( ;; ) {
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27
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112
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28 ev = (ngx_event_t *) *posted;
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0
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29
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30 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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10
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31 "posted event %p", ev);
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0
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32
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33 if (ev == NULL) {
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34 return;
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35 }
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36
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37 ngx_delete_posted_event(ev);
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38
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58
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39 ev->handler(ev);
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0
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40 }
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41 }
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42
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43
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10
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44 #if (NGX_THREADS) && !(NGX_WIN32)
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45
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112
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46 void
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47 ngx_wakeup_worker_thread(ngx_cycle_t *cycle)
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0
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48 {
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49 ngx_int_t i;
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50
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50 #if 0
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0
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51 ngx_uint_t busy;
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52 ngx_event_t *ev;
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53
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54 busy = 1;
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55
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56 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
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57 return;
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58 }
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59
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60 for (ev = (ngx_event_t *) ngx_posted_events; ev; ev = ev->next) {
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61 if (*(ev->lock) == 0) {
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62 busy = 0;
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63 break;
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64 }
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65 }
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66
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67 ngx_mutex_unlock(ngx_posted_events_mutex);
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68
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69 if (busy) {
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70 return;
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71 }
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72 #endif
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73
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74 for (i = 0; i < ngx_threads_n; i++) {
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75 if (ngx_threads[i].state == NGX_THREAD_FREE) {
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76 ngx_cond_signal(ngx_threads[i].cv);
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77 return;
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78 }
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79 }
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80 }
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81
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82
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112
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83 ngx_int_t
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84 ngx_event_thread_process_posted(ngx_cycle_t *cycle)
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0
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85 {
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86 ngx_event_t *ev;
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87
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88 for ( ;; ) {
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89
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90 ev = (ngx_event_t *) ngx_posted_events;
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91
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92 for ( ;; ) {
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93
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94 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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10
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95 "posted event %p", ev);
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0
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96
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97 if (ev == NULL) {
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98 return NGX_OK;
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99 }
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100
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101 if (ngx_trylock(ev->lock) == 0) {
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102
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103 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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104 "posted event %p is busy", ev);
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0
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105
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106 ev = ev->next;
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107 continue;
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108 }
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109
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110 if (ev->lock != ev->own_lock) {
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111 if (*(ev->own_lock)) {
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112 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
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113 "the own lock of the posted event %p is busy", ev);
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114 ngx_unlock(ev->lock);
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115 ev = ev->next;
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116 continue;
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117 }
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118 *(ev->own_lock) = 1;
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119 }
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120
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121 ngx_delete_posted_event(ev);
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122
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123 ev->locked = 1;
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124
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125 ev->ready |= ev->posted_ready;
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126 ev->timedout |= ev->posted_timedout;
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127 ev->pending_eof |= ev->posted_eof;
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18
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128 #if (NGX_HAVE_KQUEUE)
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129 ev->kq_errno |= ev->posted_errno;
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130 #endif
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131 if (ev->posted_available) {
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132 ev->available = ev->posted_available;
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133 }
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134
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135 ev->posted_ready = 0;
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136 ev->posted_timedout = 0;
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137 ev->posted_eof = 0;
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18
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138 #if (NGX_HAVE_KQUEUE)
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0
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139 ev->posted_errno = 0;
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140 #endif
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141 ev->posted_available = 0;
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142
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143 ngx_mutex_unlock(ngx_posted_events_mutex);
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144
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58
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145 ev->handler(ev);
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0
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146
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112
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147 ngx_mutex_lock(ngx_posted_events_mutex);
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0
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148
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149 if (ev->locked) {
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150 ngx_unlock(ev->lock);
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151
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152 if (ev->lock != ev->own_lock) {
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153 ngx_unlock(ev->own_lock);
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154 }
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155 }
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156
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157 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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10
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158 "posted event %p is done", ev);
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0
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159
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160 break;
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161 }
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162 }
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163 }
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164
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165 #else
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166
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112
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167 void
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168 ngx_wakeup_worker_thread(ngx_cycle_t *cycle)
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0
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169 {
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170 }
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171
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172 #endif
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