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