timeline/src/RWLock.H

   1
   2 /*******************************************************************************/
   3 /* Copyright (C) 2008 Jonathan Moore Liles                                     */
   4 /*                                                                             */
   5 /* This program is free software; you can redistribute it and/or modify it     */
   6 /* under the terms of the GNU General Public License as published by the       */
   7 /* Free Software Foundation; either version 2 of the License, or (at your      */
   8 /* option) any later version.                                                  */
   9 /*                                                                             */
  10 /* This program is distributed in the hope that it will be useful, but WITHOUT */
  11 /* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or       */
  12 /* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for   */
  13 /* more details.                                                               */
  14 /*                                                                             */
  15 /* You should have received a copy of the GNU General Public License along     */
  16 /* with This program; see the file COPYING.  If not,write to the Free Software */
  17 /* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  18 /*******************************************************************************/
  19
  20
  21 #pragma once
  22
  23 #include <pthread.h>
  24
  25 class RWLock
  26 {
  27
  28     pthread_rwlock_t _lock;
  29
  30 public:
  31
  32     RWLock ( )
  33         {
  34 //            _lock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
  35             pthread_rwlock_init( &_lock, NULL );
  36         }
  37
  38     virtual ~RWLock ( )
  39         {
  40             pthread_rwlock_destroy( &_lock );
  41         }
  42
  43     void
  44     rdlock ( void )
  45         {
  46             pthread_rwlock_rdlock( &_lock );
  47         }
  48
  49     void
  50     wrlock ( void )
  51         {
  52             pthread_rwlock_wrlock( &_lock );
  53         }
  54
  55     void
  56     unlock ( void )
  57         {
  58             pthread_rwlock_unlock( &_lock );
  59         }
  60
  61     int
  62     tryrdlock ( void )
  63         {
  64             return pthread_rwlock_tryrdlock( &_lock );
  65         }
  66
  67     int
  68     trywrlock ( void )
  69         {
  70             return pthread_rwlock_trywrlock( &_lock );
  71         }
  72
  73 };