/usr/include/libixion-0.11/ixion/thread.hpp is in libixion-dev 0.11.1-3+b1.
This file is owned by root:root, with mode 0o644.
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/*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#ifndef __IXION_THREAD_HPP__
#define __IXION_THREAD_HPP__
#include <mutex>
#include <type_traits>
#include <utility>
namespace ixion {
/**
* Original implementation from http://www.stdthread.co.uk/syncvalue .
* Altered naming conventions to match this code base. You can read more
* about this template here: http://www.drdobbs.com/cpp/225200269 .
*/
template<typename T>
class synchronized_value
{
T data;
::std::mutex m;
public:
struct updater
{
private:
friend class synchronized_value;
::std::unique_lock<std::mutex> lk;
T& data;
explicit updater(synchronized_value& outer) :
lk(outer.m),data(outer.data) {}
public:
updater(updater&& other):
lk(::std::move(other.lk)),data(other.data) {}
T* operator->()
{
return &data;
}
T& operator*()
{
return data;
}
};
updater operator->()
{
return updater(*this);
}
updater update()
{
return updater(*this);
}
private:
class deref_value
{
private:
friend class synchronized_value;
std::unique_lock<std::mutex> lk;
T& data;
explicit deref_value(synchronized_value& outer) :
lk(outer.m),data(outer.data)
{}
deref_value(deref_value&& other):
lk(std::move(other.lk)),data(other.data)
{}
public:
operator T()
{
return data;
}
deref_value& operator=(T const& new_val)
{
data=new_val;
return *this;
}
};
public:
deref_value operator*()
{
return deref_value(*this);
}
};
}
#endif
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