mirror of
https://github.com/matrix-construct/construct
synced 2024-11-30 02:32:43 +01:00
d9a4f06bf6
This is not a move to c++17. If the compiler happens to have support for c++17 namespace scope resolution, they have been kind enough to backport it to gnu++14. This limits our support for really old c++14 compilers, but that was limited anyway. GCC 6.1 and clang 3.6 tested.
100 lines
2.6 KiB
C++
100 lines
2.6 KiB
C++
/*
|
|
* Copyright (C) 2016 Charybdis Development Team
|
|
* Copyright (C) 2016 Jason Volk <jason@zemos.net>
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice is present in all copies.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
|
|
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
#define HAVE_IRCD_CTX_SHARED_STATE_H
|
|
|
|
namespace ircd::ctx
|
|
{
|
|
struct shared_state_base;
|
|
template<class T = void> struct shared_state;
|
|
template<> struct shared_state<void>;
|
|
}
|
|
|
|
struct ircd::ctx::shared_state_base
|
|
{
|
|
dock cond;
|
|
std::exception_ptr eptr;
|
|
bool finished = false;
|
|
|
|
void reset();
|
|
};
|
|
|
|
template<class T>
|
|
struct ircd::ctx::shared_state
|
|
:shared_state_base
|
|
,std::enable_shared_from_this<shared_state<T>>
|
|
{
|
|
using value_type = T;
|
|
using pointer_type = T *;
|
|
using reference_type = T &;
|
|
|
|
T val;
|
|
|
|
std::shared_ptr<const shared_state<T>> share() const;
|
|
std::shared_ptr<shared_state<T>> share();
|
|
};
|
|
|
|
template<>
|
|
struct ircd::ctx::shared_state<void>
|
|
:shared_state_base
|
|
,std::enable_shared_from_this<shared_state<void>>
|
|
{
|
|
using value_type = void;
|
|
|
|
std::shared_ptr<const shared_state<void>> share() const;
|
|
std::shared_ptr<shared_state<void>> share();
|
|
};
|
|
|
|
inline std::shared_ptr<ircd::ctx::shared_state<void>>
|
|
ircd::ctx::shared_state<void>::share()
|
|
{
|
|
return this->shared_from_this();
|
|
}
|
|
|
|
template<class T>
|
|
std::shared_ptr<ircd::ctx::shared_state<T>>
|
|
ircd::ctx::shared_state<T>::share()
|
|
{
|
|
return this->shared_from_this();
|
|
}
|
|
|
|
inline std::shared_ptr<const ircd::ctx::shared_state<void>>
|
|
ircd::ctx::shared_state<void>::share()
|
|
const
|
|
{
|
|
return this->shared_from_this();
|
|
}
|
|
|
|
template<class T>
|
|
std::shared_ptr<const ircd::ctx::shared_state<T>>
|
|
ircd::ctx::shared_state<T>::share()
|
|
const
|
|
{
|
|
return this->shared_from_this();
|
|
}
|
|
|
|
inline void
|
|
ircd::ctx::shared_state_base::reset()
|
|
{
|
|
eptr = nullptr;
|
|
finished = false;
|
|
}
|