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//------------------------------------------------------------------------------
// Author: Yauheni Azaranka
// Description: Wrapper for pthread spinlock. It implements BasicLockable concept.
// Copyright (c) 2013 EPAM Systems
//------------------------------------------------------------------------------
/*
This file is part of Nfstrace.
Nfstrace 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, version 2 of the License.
Nfstrace 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 Nfstrace. If not, see <http://www.gnu.org/licenses/>.
*/
//------------------------------------------------------------------------------
#ifndef SPINLOCK_H
#define SPINLOCK_H
//------------------------------------------------------------------------------
#include <mutex> // for std::lock_guard
#include <pthread.h>
//------------------------------------------------------------------------------
namespace NST
{
namespace utils
{
class Spinlock
{
public:
Spinlock() noexcept
{
pthread_spin_init(&spinlock, PTHREAD_PROCESS_PRIVATE);
}
Spinlock(const Spinlock&) = delete;
Spinlock& operator=(const Spinlock&) = delete;
~Spinlock() noexcept
{
pthread_spin_destroy(&spinlock);
}
bool try_lock() noexcept
{
return 0 == pthread_spin_trylock(&spinlock);
}
void lock() noexcept
{
pthread_spin_lock(&spinlock);
}
void unlock() noexcept
{
pthread_spin_unlock(&spinlock);
}
using Lock = std::lock_guard<Spinlock>;
private:
mutable pthread_spinlock_t spinlock;
};
} // namespace utils
} // namespace NST
//------------------------------------------------------------------------------
#endif//SPINLOCK_H
//------------------------------------------------------------------------------
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