ntopng/src/RwLock.cpp
Simone Mainardi a374c23b75 Implements dynamic runtime prefs
Handles generic ntopng.prefs.*

Proper handling of strings

Implements double serialization file

Makes prefs dump dir configurable
2017-07-10 15:09:39 +02:00

78 lines
2.2 KiB
C++

/*
*
* (C) 2013-17 - ntop.org
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#include "ntop_includes.h"
/* ******************************* */
RwLock::RwLock() {
pthread_rwlock_init(&the_rwlock, NULL);
#ifdef RWLOCK_DEBUG
num_locks = num_unlocks = 0;
last_lock_file[0] = '\0', last_unlock_file[0] = '\0';
last_lock_line = last_unlock_line = 0;
#endif
}
/* ******************************* */
void RwLock::lock(const char *filename, const int line, bool readonly) {
int rc;
errno = 0;
if(readonly)
rc = pthread_rwlock_rdlock(&the_rwlock);
else
rc = pthread_rwlock_wrlock(&the_rwlock);
if(rc != 0)
ntop->getTrace()->traceEvent(TRACE_WARNING,
"Unable to acquire lock. Return code %d [%s][errno=%d]",
rc, strerror(rc), errno);
#ifdef RWLOCK_DEBUG
snprintf(last_lock_file, sizeof(last_lock_file), "%s", filename);
last_lock_line = line, num_locks++;
// ntop->getTrace()->traceEvent(TRACE_NORMAL, "%s(%p)", __FUNCTION__, this);
#endif
}
/* ******************************* */
void RwLock::unlock(const char *filename, const int line) {
int rc;
errno = 0;
rc = pthread_rwlock_unlock(&the_rwlock);
if(rc != 0)
ntop->getTrace()->traceEvent(TRACE_WARNING,
"pthread_rwlock_unlock() returned %d [%s][errno=%d]",
rc, strerror(rc), errno);
#ifdef RWLOCK_DEBUG
snprintf(last_unlock_file, sizeof(last_unlock_file), "%s", filename);
last_unlock_line = line, num_unlocks++;
// ntop->getTrace()->traceEvent(TRACE_NORMAL, "%s(%p)", __FUNCTION__, this);
#endif
}