cli_var.hpp (2827B)
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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_CLI_VAR_HPP
#define RL_CLI_VAR_HPP
#ifdef _MSC_VER
# pragma once
#endif
#include "base.hpp"
#include "atomic.hpp"
namespace rl
{
template<typename T> class nvar;
template<typename T>
class nvar_proxy
{
public:
typedef typename atomic_add_type<T>::type add_type;
template<typename Y> friend class nvar;
operator T () const
{
return load();
}
T operator = (T value)
{
store(value);
return value;
}
T operator = (nvar_proxy const& r)
{
T const value = r.load();
store(value);
return *this;
}
T operator ++ (int)
{
T tmp = load();
store(tmp + 1);
return tmp;
}
T operator -- (int)
{
T tmp = load();
store(tmp - 1);
return tmp;
}
T operator ++ ()
{
T tmp = load();
store(tmp + 1);
return tmp + 1;
}
T operator -- ()
{
T tmp = load();
store(tmp - 1);
return tmp - 1;
}
T operator += (add_type value)
{
T tmp = load();
store(tmp + value);
return tmp + value;
}
T operator -= (add_type value)
{
T tmp = load();
store(tmp - value);
return tmp - value;
}
private:
nvar<T>& var_;
debug_info info_;
nvar_proxy(nvar<T>& var, debug_info_param info)
: var_(var)
, info_(info)
{
}
T load() const
{
return var_.load(mo_relaxed, info_);
}
void store(T value)
{
var_.store(value, mo_relaxed, info_);
}
};
template<typename T>
class nvar : public generic_atomic<T, true>
{
public:
typedef nvar_proxy<T> proxy_t;
friend class nvar_proxy<T>;
nvar()
{
}
explicit nvar(T value)
{
this->store(value, mo_relaxed, $);
}
nvar(nvar const& r)
{
T const value = r.load(mo_relaxed, $);
this->store(value, mo_relaxed, $);
}
nvar(proxy_t const& r)
{
T const value = r.load();
this->store(value, mo_relaxed, r.info_);
}
proxy_t operator () (debug_info_param info)
{
return proxy_t(*this, info);
}
private:
nvar& operator = (nvar const&);
};
}
#endif
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