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#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>
ngx_thread_volatile ngx_event_t *ngx_posted_events;
#if (NGX_THREADS)
ngx_mutex_t *ngx_posted_events_mutex;
ngx_cond_t *ngx_posted_events_cv;
#endif
void ngx_event_process_posted(ngx_cycle_t *cycle)
{
ngx_event_t *ev;
for ( ;; ) {
ev = (ngx_event_t *) ngx_posted_events;
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"posted event " PTR_FMT, ev);
if (ev == NULL) {
return;
}
ngx_posted_events = ev->next;
if (ev->accept) {
continue;
}
if ((!ev->posted && !ev->active)
|| (ev->use_instance && ev->instance != ev->returned_instance))
{
/*
* the stale event from a file descriptor
* that was just closed in this iteration
*/
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"stale posted event " PTR_FMT, ev);
continue;
}
if (ev->posted) {
ev->posted = 0;
}
ev->event_handler(ev);
}
}
#if (NGX_THREADS)
ngx_int_t ngx_event_thread_process_posted(ngx_cycle_t *cycle)
{
ngx_event_t *ev, **ep;
for ( ;; ) {
ev = (ngx_event_t *) ngx_posted_events;
ep = (ngx_event_t **) &ngx_posted_events;
for ( ;; ) {
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"posted event " PTR_FMT, ev);
if (ev == NULL) {
ngx_mutex_unlock(ngx_posted_events_mutex);
return NGX_OK;
}
if (ngx_trylock(ev->lock) == 0) {
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"posted event " PTR_FMT " is busy", ev);
ep = &ev->next;
ev = ev->next;
continue;
}
*ep = ev->next;
if ((!ev->posted && !ev->active)
|| (ev->use_instance && ev->instance != ev->returned_instance))
{
/*
* The stale event from a file descriptor that was just
* closed in this iteration. We use ngx_cycle->log
* because ev->log may be already destoyed.
*/
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, ngx_cycle->log, 0,
"kevent: stale event " PTR_FMT, ev);
ngx_unlock(ev->lock);
ev = ev->next;
continue;
}
ngx_mutex_unlock(ngx_posted_events_mutex);
if (ev->posted) {
ev->posted = 0;
}
ev->event_handler(ev);
ngx_unlock(ev->lock);
if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
return NGX_ERROR;
}
break;
}
}
}
#endif
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