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/*
* Copyright (C) Igor Sysoev
*/
#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;
#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 %p", ev);
if (ev == NULL) {
return;
}
ngx_delete_posted_event(ev);
ev->event_handler(ev);
}
}
#if (NGX_THREADS) && !(NGX_WIN32)
void ngx_wakeup_worker_thread(ngx_cycle_t *cycle)
{
ngx_int_t i;
ngx_uint_t busy;
ngx_event_t *ev;
#if 0
busy = 1;
if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
return;
}
for (ev = (ngx_event_t *) ngx_posted_events; ev; ev = ev->next) {
if (*(ev->lock) == 0) {
busy = 0;
break;
}
}
ngx_mutex_unlock(ngx_posted_events_mutex);
if (busy) {
return;
}
#endif
for (i = 0; i < ngx_threads_n; i++) {
if (ngx_threads[i].state == NGX_THREAD_FREE) {
ngx_cond_signal(ngx_threads[i].cv);
return;
}
}
}
ngx_int_t ngx_event_thread_process_posted(ngx_cycle_t *cycle)
{
ngx_event_t *ev;
for ( ;; ) {
ev = (ngx_event_t *) ngx_posted_events;
for ( ;; ) {
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"posted event %p", ev);
if (ev == NULL) {
return NGX_OK;
}
if (ngx_trylock(ev->lock) == 0) {
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"posted event %p is busy", ev);
ev = ev->next;
continue;
}
if (ev->lock != ev->own_lock) {
if (*(ev->own_lock)) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
"the own lock of the posted event %p is busy", ev);
ngx_unlock(ev->lock);
ev = ev->next;
continue;
}
*(ev->own_lock) = 1;
}
ngx_delete_posted_event(ev);
ev->locked = 1;
ev->ready |= ev->posted_ready;
ev->timedout |= ev->posted_timedout;
ev->pending_eof |= ev->posted_eof;
#if (NGX_HAVE_KQUEUE)
ev->kq_errno |= ev->posted_errno;
#endif
if (ev->posted_available) {
ev->available = ev->posted_available;
}
ev->posted_ready = 0;
ev->posted_timedout = 0;
ev->posted_eof = 0;
#if (NGX_HAVE_KQUEUE)
ev->posted_errno = 0;
#endif
ev->posted_available = 0;
ngx_mutex_unlock(ngx_posted_events_mutex);
ev->event_handler(ev);
if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
return NGX_ERROR;
}
if (ev->locked) {
ngx_unlock(ev->lock);
if (ev->lock != ev->own_lock) {
ngx_unlock(ev->own_lock);
}
}
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"posted event %p is done", ev);
break;
}
}
}
#else
void ngx_wakeup_worker_thread(ngx_cycle_t *cycle)
{
}
#endif
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