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/*
* amutex.h
*
* Simple mutex wrapper class.
*/
/*
* Copyright (C) 2007 Adam Kropelin
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General
* Public License as published by the Free Software Foundation.
*
* 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., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1335, USA.
*/
#ifndef __AMUTEX_H
#define __AMUTEX_H
#include <pthread.h>
#include "astring.h"
// Wrappers for debug trace
#define LOCK(m) \
do { \
Dmsg(500, "lock 0x%p @ %s:%d\n", &m, __FILE__, __LINE__); \
m.lock(); \
} while(0)
#define UNLOCK(m) \
do { \
Dmsg(500, "unlock 0x%p @ %s:%d\n", &m, __FILE__, __LINE__); \
m.unlock(); \
} while(0)
class amutex
{
public:
amutex(const char *name = DEFAULT_NAME, bool recursive = false);
~amutex();
// Basic lock/unlock are inlined for efficiency
inline void lock() const { pthread_mutex_lock(&_mutex); }
inline void unlock() const { pthread_mutex_unlock(&_mutex); }
protected:
mutable pthread_mutex_t _mutex;
astring _name;
private:
static const char *DEFAULT_NAME;
// Prevent use
amutex(const amutex &rhs);
amutex &operator=(const amutex &rhs);
};
#endif
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