Line data    Source code

       1             : /* src/threads/mutex.hpp - machine independent mutual exclusion functions
       2             : 
       3             :    Copyright (C) 1996-2013
       4             :    CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
       5             : 
       6             :    This file is part of CACAO.
       7             : 
       8             :    This program is free software; you can redistribute it and/or
       9             :    modify it under the terms of the GNU General Public License as
      10             :    published by the Free Software Foundation; either version 2, or (at
      11             :    your option) any later version.
      12             : 
      13             :    This program is distributed in the hope that it will be useful, but
      14             :    WITHOUT ANY WARRANTY; without even the implied warranty of
      15             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      16             :    General Public License for more details.
      17             : 
      18             :    You should have received a copy of the GNU General Public License
      19             :    along with this program; if not, write to the Free Software
      20             :    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
      21             :    02110-1301, USA.
      22             : 
      23             : */
      24             : 
      25             : 
      26             : #ifndef _MUTEX_HPP
      27             : #define _MUTEX_HPP
      28             : 
      29             : #include "config.h"
      30             : 
      31             : #if defined(ENABLE_THREADS)
      32             : # include "threads/posix/mutex-posix.hpp"
      33             : #else
      34             : # include "threads/none/mutex-none.hpp"
      35             : #endif
      36             : 
      37             : /**
      38             :  * Helper class used to implicitly acquire and release a mutex
      39             :  * within a method scope.
      40             :  */
      41             : template<class T>
      42             : class AnyObjLocker
      43             : {
      44             : private:
      45             :         T& _mutex;
      46             : 
      47             : public:
      48     6185208 :         AnyObjLocker(T& mutex): _mutex(mutex) { _mutex.lock(); }
      49     6185187 :         ~AnyObjLocker()                       { _mutex.unlock(); }
      50             : };
      51             : 
      52             : template<class T>
      53             : class AnyClassLocker
      54             : {
      55             : public:
      56           1 :         AnyClassLocker() { T::lock(); }
      57           1 :         ~AnyClassLocker() { T::unlock(); }
      58             : };
      59             : 
      60             : typedef AnyObjLocker<Mutex> MutexLocker;
      61             : 
      62             : #endif /* _MUTEX_HPP */
      63             : 
      64             : 
      65             : /*
      66             :  * These are local overrides for various environment variables in Emacs.
      67             :  * Please do not remove this and leave it at the end of the file, where
      68             :  * Emacs will automagically detect them.
      69             :  * ---------------------------------------------------------------------
      70             :  * Local variables:
      71             :  * mode: c++
      72             :  * indent-tabs-mode: t
      73             :  * c-basic-offset: 4
      74             :  * tab-width: 4
      75             :  * End:
      76             :  * vim:noexpandtab:sw=4:ts=4:
      77             :  */