mirror of
https://github.com/ntop/ntopng.git
synced 2026-05-06 12:15:15 +00:00
111 lines
2.6 KiB
C++
111 lines
2.6 KiB
C++
/*
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*
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* (C) 2013-25 - ntop.org
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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#include "ntop_includes.h"
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/* ************************************ */
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Condvar::Condvar() {
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if(trace_new_delete) ntop->getTrace()->traceEvent(TRACE_NORMAL, "[new] %s", __FILE__);
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init();
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}
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/* ************************************ */
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void Condvar::init() {
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pthread_mutex_init(&mutex, NULL);
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pthread_cond_init(&condvar, NULL);
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predicate = false;
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}
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/* ************************************ */
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Condvar::~Condvar() {
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if(trace_new_delete) ntop->getTrace()->traceEvent(TRACE_NORMAL, "[delete] %s", __FILE__);
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pthread_mutex_destroy(&mutex);
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pthread_cond_destroy(&condvar);
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}
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/* ************************************ */
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int Condvar::wait() {
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int rc;
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if ((rc = pthread_mutex_lock(&mutex)) != 0) {
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ntop->getTrace()->traceEvent(
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TRACE_ERROR, "Condvar::wait() lock failed %d/%s", rc, strerror(rc));
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return rc;
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}
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while (predicate == false) rc = pthread_cond_wait(&condvar, &mutex);
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predicate = false;
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rc = pthread_mutex_unlock(&mutex);
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return rc;
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}
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/* ************************************ */
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int Condvar::timedWait(struct timespec *expiration) {
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int rc;
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if ((rc = pthread_mutex_lock(&mutex)) != 0) {
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ntop->getTrace()->traceEvent(
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TRACE_ERROR, "Condvar::wait() lock failed %d/%s", rc, strerror(rc));
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return rc;
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}
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#if 1
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while (predicate == false) {
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rc = pthread_cond_timedwait(&condvar, &mutex, expiration);
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if (rc == ETIMEDOUT) {
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pthread_mutex_unlock(&mutex);
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return rc;
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}
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}
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#endif
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predicate = false;
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return (pthread_mutex_unlock(&mutex));
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}
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/* ************************************ */
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int Condvar::signal_waiters(bool signal_all) {
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int rc;
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rc = pthread_mutex_lock(&mutex);
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predicate = true;
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rc = pthread_mutex_unlock(&mutex);
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if (signal_all)
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rc = pthread_cond_broadcast(&condvar);
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else
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rc = pthread_cond_signal(&condvar);
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return rc;
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}
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