Mercurial > hg > nginx-quic
diff src/event/ngx_event_mutex.c @ 272:d4e65d74db9f
nginx-0.0.2-2004-03-01-00:03:02 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Sun, 29 Feb 2004 21:03:02 +0000 |
parents | d220029ac7f3 |
children | 34329e143004 |
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--- a/src/event/ngx_event_mutex.c +++ b/src/event/ngx_event_mutex.c @@ -1,14 +1,65 @@ -spinlock_max depend on CPU number and mutex type. - 1 CPU 1 - ngx_malloc_mutex 1000 ? +#include <ngx_config.h> +#include <ngx_core.h> +#include <ngx_event.h> -int ngx_event_mutex_trylock(ngx_mutex_t *mtx) +ngx_int_t ngx_event_mutex_timedlock(ngx_event_mutex_t *m, ngx_msec_t timer, + ngx_event_t *ev) { - for(i = mtx->spinlock_max; i; i--) - if (trylock(mtx->lock)) - return 1; + ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, + "lock event mutex " PTR_FMT " lock:%X", m, m->lock); + + if (m->lock) { + + if (m->events == NULL) { + m->events = ev; + + } else { + m->last->next = ev; + } + + m->last = ev; + ev->next = NULL; + +#if (NGX_THREADS) + ev->light = 1; +#endif + + ngx_add_timer(ev, timer); + + return NGX_AGAIN; + } + + m->lock = 1; - return 0; + return NGX_OK; } + + +ngx_int_t ngx_event_mutex_unlock(ngx_event_mutex_t *m, ngx_log_t *log) +{ + ngx_event_t *ev; + + if (m->lock == 0) { + ngx_log_error(NGX_LOG_ALERT, log, 0, + "tring to unlock the free event mutex " PTR_FMT, m); + return NGX_ERROR; + } + + ngx_log_debug2(NGX_LOG_DEBUG_EVENT, log, 0, + "unlock event mutex " PTR_FMT ", next event: " PTR_FMT, + m, m->events); + + m->lock = 0; + + if (m->events) { + ev = m->events; + m->events = ev->next; + + ev->next = (ngx_event_t *) ngx_posted_events; + ngx_posted_events = ev; + } + + return NGX_OK; +}