xwords/xwords4/relay/mlock.h

130 lines
3.1 KiB
C

/* -*-mode: C; fill-column: 78; c-basic-offset: 4; -*- */
/*
* Copyright 2005 by Eric House (xwords@eehouse.org). All rights reserved.
*
* 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 2
* 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 _MLOCK_H_
#define _MLOCK_H_
#include <pthread.h>
#include "xwrelay_priv.h"
#include "cref.h"
#include "crefmgr.h"
class MutexLock {
public:
MutexLock( pthread_mutex_t* mutex ) {
m_mutex = mutex;
#ifdef DEBUG_LOCKS
logf( XW_LOGINFO, "tlm %p", mutex );
#endif
pthread_mutex_lock( mutex );
#ifdef DEBUG_LOCKS
logf( XW_LOGINFO, "slm %p", mutex );
#endif
}
~MutexLock() {
#ifdef DEBUG_LOCKS
logf( XW_LOGINFO, "ULM %p", m_mutex );
#endif
pthread_mutex_unlock( m_mutex );
}
private:
pthread_mutex_t* m_mutex;
};
class SocketWriteLock {
public:
SocketWriteLock( int socket )
: m_socket( socket )
, m_mutex( CRefMgr::Get()->GetWriteMutexForSocket( socket ) )
{
#ifdef DEBUG_LOCKS
logf( XW_LOGINFO, "tlm %p for socket %d", m_mutex, socket );
#endif
if ( m_mutex != NULL ) {
pthread_mutex_lock( m_mutex );
}
#ifdef DEBUG_LOCKS
logf( XW_LOGINFO, "slm %p for socket %d", m_mutex, socket );
#endif
}
~SocketWriteLock() {
#ifdef DEBUG_LOCKS
logf( XW_LOGINFO, "ULM %p for socket %d", m_mutex, m_socket );
#endif
if ( m_mutex != NULL ) {
pthread_mutex_unlock( m_mutex );
}
}
bool socketFound() { return (m_mutex != NULL); }
private:
int m_socket;
pthread_mutex_t* m_mutex;
};
class RWReadLock {
public:
RWReadLock( pthread_rwlock_t* rwl ) {
#ifdef DEBUG_LOCKS
logf( XW_LOGINFO, "tlrr %p", rwl );
#endif
pthread_rwlock_rdlock( rwl );
#ifdef DEBUG_LOCKS
logf( XW_LOGINFO, "slrr %p", rwl );
#endif
_rwl = rwl;
}
~RWReadLock() {
pthread_rwlock_unlock( _rwl );
#ifdef DEBUG_LOCKS
logf( XW_LOGINFO, "ULRR %p", _rwl );
#endif
}
private:
pthread_rwlock_t* _rwl;
};
class RWWriteLock {
public:
RWWriteLock( pthread_rwlock_t* rwl ) : _rwl(rwl) {
#ifdef DEBUG_LOCKS
logf( XW_LOGINFO, "tlww %p", rwl );
#endif
pthread_rwlock_wrlock( rwl );
#ifdef DEBUG_LOCKS
logf( XW_LOGINFO, "slww %p", rwl );
#endif
}
~RWWriteLock() {
pthread_rwlock_unlock( _rwl );
#ifdef DEBUG_LOCKS
logf( XW_LOGINFO, "ULWW %p", _rwl );
#endif
}
private:
pthread_rwlock_t* _rwl;
};
#endif