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Contents
/*
* OXT - OS eXtensions for boosT
* Provides important functionality necessary for writing robust server software.
*
* Copyright (c) 2010 Phusion
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <libkern/OSAtomic.h>
#include <boost/noncopyable.hpp>
/*
* Implementation of a spin lock using Darwin spin locks.
*
* See spin_lock_gcc_x86.hpp for API documentation.
*/
namespace oxt {
class spin_lock {
private:
OSSpinLock spin;
public:
class scoped_lock: boost::noncopyable {
private:
spin_lock &l;
public:
scoped_lock(spin_lock &lock): l(lock) {
l.lock();
}
~scoped_lock() {
l.unlock();
}
};
spin_lock() {
spin = 0;
}
void lock() {
OSSpinLockLock(&spin);
}
void unlock() {
OSSpinLockUnlock(&spin);
}
bool try_lock() {
return OSSpinLockTry(&spin);
}
};
} // namespace oxt
Version data entries
35 entries across 35 versions & 1 rubygems