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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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660
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4 * Copyright (C) Nginx, Inc.
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0
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5 */
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6
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_event.h>
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11
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12
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112
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13 ngx_thread_volatile ngx_event_t *ngx_posted_accept_events;
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0
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14 ngx_thread_volatile ngx_event_t *ngx_posted_events;
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15
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16 #if (NGX_THREADS)
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17 ngx_mutex_t *ngx_posted_events_mutex;
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18 #endif
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19
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20
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112
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21 void
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22 ngx_event_process_posted(ngx_cycle_t *cycle,
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23 ngx_thread_volatile ngx_event_t **posted)
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0
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24 {
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25 ngx_event_t *ev;
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26
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27 for ( ;; ) {
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28
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112
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29 ev = (ngx_event_t *) *posted;
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0
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30
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31 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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10
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32 "posted event %p", ev);
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0
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33
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34 if (ev == NULL) {
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35 return;
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36 }
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37
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38 ngx_delete_posted_event(ev);
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39
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58
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40 ev->handler(ev);
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0
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41 }
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42 }
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43
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44
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10
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45 #if (NGX_THREADS) && !(NGX_WIN32)
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0
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46
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112
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47 void
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48 ngx_wakeup_worker_thread(ngx_cycle_t *cycle)
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0
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49 {
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50 ngx_int_t i;
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50
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51 #if 0
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0
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52 ngx_uint_t busy;
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53 ngx_event_t *ev;
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54
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55 busy = 1;
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56
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57 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
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58 return;
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59 }
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60
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61 for (ev = (ngx_event_t *) ngx_posted_events; ev; ev = ev->next) {
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62 if (*(ev->lock) == 0) {
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63 busy = 0;
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64 break;
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65 }
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66 }
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67
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68 ngx_mutex_unlock(ngx_posted_events_mutex);
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69
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70 if (busy) {
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71 return;
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72 }
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73 #endif
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74
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75 for (i = 0; i < ngx_threads_n; i++) {
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76 if (ngx_threads[i].state == NGX_THREAD_FREE) {
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77 ngx_cond_signal(ngx_threads[i].cv);
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78 return;
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79 }
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80 }
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81 }
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82
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83
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112
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84 ngx_int_t
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85 ngx_event_thread_process_posted(ngx_cycle_t *cycle)
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0
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86 {
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87 ngx_event_t *ev;
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88
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89 for ( ;; ) {
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90
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91 ev = (ngx_event_t *) ngx_posted_events;
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92
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93 for ( ;; ) {
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94
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95 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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10
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96 "posted event %p", ev);
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0
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97
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98 if (ev == NULL) {
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99 return NGX_OK;
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100 }
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101
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102 if (ngx_trylock(ev->lock) == 0) {
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103
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104 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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10
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105 "posted event %p is busy", ev);
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0
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106
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107 ev = ev->next;
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108 continue;
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109 }
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110
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111 if (ev->lock != ev->own_lock) {
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112 if (*(ev->own_lock)) {
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113 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
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10
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114 "the own lock of the posted event %p is busy", ev);
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0
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115 ngx_unlock(ev->lock);
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116 ev = ev->next;
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117 continue;
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118 }
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119 *(ev->own_lock) = 1;
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120 }
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121
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122 ngx_delete_posted_event(ev);
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123
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124 ev->locked = 1;
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125
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126 ev->ready |= ev->posted_ready;
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127 ev->timedout |= ev->posted_timedout;
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128 ev->pending_eof |= ev->posted_eof;
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18
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129 #if (NGX_HAVE_KQUEUE)
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0
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130 ev->kq_errno |= ev->posted_errno;
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131 #endif
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132 if (ev->posted_available) {
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133 ev->available = ev->posted_available;
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134 }
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135
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136 ev->posted_ready = 0;
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137 ev->posted_timedout = 0;
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138 ev->posted_eof = 0;
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18
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139 #if (NGX_HAVE_KQUEUE)
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0
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140 ev->posted_errno = 0;
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141 #endif
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142 ev->posted_available = 0;
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143
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144 ngx_mutex_unlock(ngx_posted_events_mutex);
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145
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58
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146 ev->handler(ev);
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0
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147
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112
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148 ngx_mutex_lock(ngx_posted_events_mutex);
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0
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149
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150 if (ev->locked) {
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151 ngx_unlock(ev->lock);
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152
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153 if (ev->lock != ev->own_lock) {
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154 ngx_unlock(ev->own_lock);
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155 }
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156 }
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157
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158 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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10
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159 "posted event %p is done", ev);
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0
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160
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161 break;
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162 }
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163 }
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164 }
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165
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166 #else
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167
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112
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168 void
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169 ngx_wakeup_worker_thread(ngx_cycle_t *cycle)
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0
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170 {
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171 }
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172
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173 #endif
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