java_atomic.hpp (3199B)
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/* Relacy Race Detector
* Copyright (c) 2008-2010, Dmitry S. Vyukov
* All rights reserved.
* This software is provided AS-IS with no warranty, either express or implied.
* This software is distributed under a license and may not be copied,
* modified or distributed except as expressly authorized under the
* terms of the license contained in the file LICENSE.TXT in this distribution.
*/
#ifndef RL_JAVA_ATOMIC_HPP
#define RL_JAVA_ATOMIC_HPP
#ifdef _MSC_VER
# pragma once
#endif
#include "base.hpp"
#include "atomic.hpp"
namespace rl
{
template<typename T> class jatomic;
template<typename T>
class jatomic_proxy
{
public:
T get() const
{
return var_.load(mo_seq_cst, info_);
}
void set(T value)
{
var_.store(value, mo_seq_cst, info_);
}
T addAndGet(T delta)
{
return getAndAdd(delta) + delta;
}
bool compareAndSet(T expect, T update)
{
bool result = var_.compare_exchange(bool_t<false>(), expect, update, mo_seq_cst, info_);
return result;
}
bool weakCompareAndSet(T expect, T update)
{
bool result = var_.compare_exchange(bool_t<true>(), expect, update, mo_seq_cst, info_);
return result;
}
T decrementAndGet()
{
return getAndAdd(-1) - 1;
}
T getAndAdd(T delta)
{
T result = var_.rmw(rmw_type_t<rmw_type_add>(), delta, mo_seq_cst, info_);
return result;
}
T getAndDecrement()
{
return getAndAdd(-1);
}
T getAndIncrement()
{
return getAndAdd(+1);
}
T getAndSet(T newValue)
{
T result = var_.rmw(rmw_type_t<rmw_type_swap>(), newValue, mo_seq_cst, info_);
return result;
}
T incrementAndGet()
{
return getAndAdd(1) + 1;
}
private:
jatomic<T>& var_;
debug_info info_;
//typedef typename atomic_add_type<T>::type add_type;
template<typename Y> friend class jatomic;
jatomic_proxy(jatomic<T>& var, debug_info_param info)
: var_(var)
, info_(info)
{
}
jatomic_proxy& operator = (jatomic_proxy const&);
};
template<typename T>
class jatomic : generic_atomic<T, true>
{
public:
typedef jatomic_proxy<T> proxy_t;
friend class jatomic_proxy<T>;
jatomic()
{
}
jatomic(T value)
{
//??? whether here must be mo_relaxed or mo_release?
this->store(value, mo_seq_cst, $);
}
jatomic(jatomic const& r)
{
T const value = r.load(mo_seq_cst, $);
//??? whether here must be mo_relaxed or mo_release?
this->store(value, mo_seq_cst, $);
}
jatomic(proxy_t const& r)
{
T const value = r.var_.load(mo_seq_cst, r.info_);
//??? whether here must be mo_relaxed or mo_release?
this->store(value, mo_seq_cst, r.info_);
}
proxy_t operator () (debug_info_param info)
{
return proxy_t(*this, info);
}
};
typedef jatomic<int> AtomicInteger;
typedef jatomic<long> AtomicLong;
}
#endif
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