mirror of
https://github.com/matrix-construct/construct
synced 2024-07-04 01:38:24 +02:00
91 lines
2 KiB
C++
91 lines
2 KiB
C++
// Matrix Construct
|
|
//
|
|
// Copyright (C) Matrix Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2018 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. The
|
|
// full license for this software is available in the LICENSE file.
|
|
|
|
#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;
|
|
uint promise_refcnt {0};
|
|
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;
|
|
}
|