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/*
*
* (C) 2013-22 - 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.
*
*/
#ifndef _MUTEX_H_
#define _MUTEX_H_
#include "ntop_includes.h"
/* #define MUTEX_DEBUG 1 */
/* ******************************* */
class Mutex {
private:
pthread_mutex_t the_mutex;
bool locked;
#ifdef MUTEX_DEBUG
char last_lock_file[64], last_unlock_file[64];
int last_lock_line, last_unlock_line;
u_int num_locks, num_unlocks;
#endif
void initialize();
public:
Mutex();
~Mutex() { pthread_mutex_destroy(&the_mutex); };
void lock(const char *filename, const int line, bool trace_errors = true);
void unlock(const char *filename, const int line, bool trace_errors = true);
inline bool is_locked() { return(locked); };
/* NOTE: this must be called while locked */
inline int cond_wait(pthread_cond_t *condvar) { return pthread_cond_wait(condvar, &the_mutex); };
};
#endif /* _MUTEX_H_ */
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