83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
|
// $Id$
|
||
|
|
//
|
||
|
|
// SuperTuxKart - a fun racing game with go-kart
|
||
|
|
// Copyright (C) 2010 Joerg Henrichs
|
||
|
|
//
|
||
|
|
// 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 HEADER_SYNCHRONISED_HPP
|
||
|
|
#define HEADER_SYNCHRONISED_HPP
|
||
|
|
|
||
|
|
#include <pthread.h>
|
||
|
|
|
||
|
|
template<typename TYPE>
|
||
|
|
|
||
|
|
/** A variable that is automatically synchronised using pthreads mutex.
|
||
|
|
*/
|
||
|
|
class Synchronised
|
||
|
|
{
|
||
|
|
private:
|
||
|
|
/** The mutex to protect this variable with. */
|
||
|
|
mutable pthread_mutex_t m_mutex;
|
||
|
|
/** The actual data to be used. */
|
||
|
|
TYPE m_data;
|
||
|
|
public:
|
||
|
|
/** Initialise the data and the mutex. */
|
||
|
|
Synchronised(const TYPE &v)
|
||
|
|
{
|
||
|
|
m_data = v;
|
||
|
|
pthread_mutex_init(&m_mutex, NULL);
|
||
|
|
} // Synchronised
|
||
|
|
|
||
|
|
// ------------------------------------------------------------------------
|
||
|
|
/** Destroy this mutex.
|
||
|
|
*/
|
||
|
|
~Synchronised()
|
||
|
|
{
|
||
|
|
pthread_mutex_destroy(&m_mutex);
|
||
|
|
} // ~Synchronised
|
||
|
|
|
||
|
|
// ------------------------------------------------------------------------
|
||
|
|
/** Sets the value of this variable using a mutex.
|
||
|
|
* \param v Value to be set.
|
||
|
|
*/
|
||
|
|
void set(const TYPE &v)
|
||
|
|
{
|
||
|
|
pthread_mutex_lock(&m_mutex);
|
||
|
|
m_data = v;
|
||
|
|
pthread_mutex_unlock(&m_mutex);
|
||
|
|
} // set
|
||
|
|
|
||
|
|
// ------------------------------------------------------------------------
|
||
|
|
/** Returns a copy of this variable.
|
||
|
|
*/
|
||
|
|
TYPE get() const
|
||
|
|
{
|
||
|
|
TYPE v;
|
||
|
|
pthread_mutex_lock(&m_mutex);
|
||
|
|
v = m_data;
|
||
|
|
pthread_mutex_unlock(&m_mutex);
|
||
|
|
return v;
|
||
|
|
} // get
|
||
|
|
|
||
|
|
private:
|
||
|
|
// Make sure that no actual copying is taking place
|
||
|
|
// ------------------------------------------------------------------------
|
||
|
|
void operator=(const Synchronised<TYPE>& v) {}
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
#endif
|