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/*
* Copyright (C) Igor Sysoev
* Copyright (C) NGINX, Inc.
*/
#include <nxt_main.h>
nxt_int_t
nxt_thread_cond_create(nxt_thread_cond_t *cond)
{
nxt_err_t err;
err = pthread_cond_init(cond, NULL);
if (err == 0) {
nxt_thread_log_debug("pthread_cond_init(%p)", cond);
return NXT_OK;
}
nxt_thread_log_emerg("pthread_cond_init() failed %E", err);
return NXT_ERROR;
}
void
nxt_thread_cond_destroy(nxt_thread_cond_t *cond)
{
nxt_err_t err;
err = pthread_cond_destroy(cond);
if (err != 0) {
nxt_thread_log_alert("pthread_cond_destroy() failed %E", err);
}
nxt_thread_log_debug("pthread_cond_destroy(%p)", cond);
}
nxt_int_t
nxt_thread_cond_signal(nxt_thread_cond_t *cond)
{
nxt_err_t err;
err = pthread_cond_signal(cond);
if (nxt_fast_path(err == 0)) {
nxt_thread_log_debug("pthread_cond_signal(%p)", cond);
return NXT_OK;
}
nxt_thread_log_alert("pthread_cond_signal() failed %E", err);
return NXT_ERROR;
}
nxt_err_t
nxt_thread_cond_wait(nxt_thread_cond_t *cond, nxt_thread_mutex_t *mtx,
nxt_nsec_t timeout)
{
nxt_err_t err;
nxt_nsec_t ns;
nxt_thread_t *thr;
nxt_realtime_t *now;
struct timespec ts;
thr = nxt_thread();
if (timeout == NXT_INFINITE_NSEC) {
nxt_log_debug(thr->log, "pthread_cond_wait(%p) enter", cond);
err = pthread_cond_wait(cond, mtx);
nxt_thread_time_update(thr);
if (nxt_fast_path(err == 0)) {
nxt_log_debug(thr->log, "pthread_cond_wait(%p) exit", cond);
return 0;
}
nxt_log_alert(thr->log, "pthread_cond_wait() failed %E", err);
} else {
nxt_log_debug(thr->log, "pthread_cond_timedwait(%p, %N) enter",
cond, timeout);
now = nxt_thread_realtime(thr);
ns = now->nsec + timeout;
ts.tv_sec = now->sec + ns / 1000000000;
ts.tv_nsec = ns % 1000000000;
err = pthread_cond_timedwait(cond, mtx, &ts);
nxt_thread_time_update(thr);
if (nxt_fast_path(err == 0 || err == NXT_ETIMEDOUT)) {
nxt_log_debug(thr->log, "pthread_cond_timedwait(%p) exit: %d",
cond, err);
return err;
}
nxt_log_alert(thr->log, "pthread_cond_timedwait() failed %E", err);
}
return NXT_ERROR;
}
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