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Add a RAII SpinLock (using boost's spinlock)

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This commit is contained in:
Robin Gareus 2017-10-26 22:33:11 +02:00
parent eeb148bb61
commit 1aa96dc0a1
3 changed files with 86 additions and 0 deletions
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48
libs/pbd/pbd/spinlock.h Normal file
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@ -0,0 +1,48 @@
/*
* Copyright (C) 2017 Robin Gareus <robin@gareus.org>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef _pbd_spinlock_h_
#define _pbd_spinlock_h_
#include <boost/smart_ptr/detail/spinlock.hpp>
#include "pbd/libpbd_visibility.h"
namespace PBD {
/* struct boost::detail::spinlock {
* void lock();
* bool try_lock();
* void unlock();
* };
*/
typedef boost::detail::spinlock spinlock_t;
/* RAII wrapper */
class LIBPBD_API SpinLock {
public:
SpinLock (spinlock_t&);
~SpinLock ();
private:
spinlock_t& _lock;
};
} /* namespace */
#endif /* _pbd_spinlock_h__ */

37
libs/pbd/spinlock.cc Normal file
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/*
* Copyright (C) 2017 Robin Gareus <robin@gareus.org>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifdef PLATFORM_WINDOWS
#include <windows.h>
#include <malloc.h>
#endif
#include "pbd/spinlock.h"
using namespace PBD;
SpinLock::SpinLock (spinlock_t& lock)
: _lock (lock)
{
_lock.lock ();
}
SpinLock::~SpinLock ()
{
_lock.unlock ();
}

1
libs/pbd/wscript
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@ -70,6 +70,7 @@ libpbd_sources = [
'semutils.cc',
'shortpath.cc',
'signals.cc',
'spinlock.cc',
'stacktrace.cc',
'stateful_diff_command.cc',
'stateful.cc',