mirror of
https://github.com/matrix-construct/construct
synced 2024-12-02 03:32:52 +01:00
98 lines
2.7 KiB
C++
98 lines
2.7 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_POOL_H
|
|
|
|
namespace ircd {
|
|
namespace ctx {
|
|
|
|
struct pool
|
|
{
|
|
using closure = std::function<void ()>;
|
|
|
|
private:
|
|
size_t stack_size;
|
|
size_t available;
|
|
struct dock dock;
|
|
std::deque<closure> queue;
|
|
std::vector<context> ctxs;
|
|
|
|
void next();
|
|
void main();
|
|
|
|
public:
|
|
auto size() const { return ctxs.size(); }
|
|
auto avail() const { return available; }
|
|
auto queued() const { return queue.size(); }
|
|
|
|
void add(const size_t & = 1);
|
|
void del(const size_t & = 1);
|
|
|
|
void operator()(closure);
|
|
template<class F, class... A> future_void<F, A...> async(F&&, A&&...);
|
|
template<class F, class... A> future_value<F, A...> async(F&&, A&&...);
|
|
|
|
pool(const size_t & = 0, const size_t &stack_size = DEFAULT_STACK_SIZE);
|
|
~pool() noexcept;
|
|
};
|
|
|
|
template<class F,
|
|
class... A>
|
|
future_value<F, A...>
|
|
pool::async(F&& f,
|
|
A&&... a)
|
|
{
|
|
using R = typename std::result_of<F (A...)>::type;
|
|
|
|
auto func(std::bind(std::forward<F>(f), std::forward<A>(a)...));
|
|
auto p(std::make_shared<promise<R>>());
|
|
(*this)([p, func(std::move(func))]
|
|
() -> void
|
|
{
|
|
p->set_value(func());
|
|
});
|
|
|
|
return future<R>(*p);
|
|
}
|
|
|
|
template<class F,
|
|
class... A>
|
|
future_void<F, A...>
|
|
pool::async(F&& f,
|
|
A&&... a)
|
|
{
|
|
using R = typename std::result_of<F (A...)>::type;
|
|
|
|
auto func(std::bind(std::forward<F>(f), std::forward<A>(a)...));
|
|
auto p(std::make_shared<promise<R>>());
|
|
(*this)([p, func(std::move(func))]
|
|
() -> void
|
|
{
|
|
func();
|
|
p->set_value();
|
|
});
|
|
|
|
return future<R>(*p);
|
|
}
|
|
|
|
} // namespace ctx
|
|
} // namespace ircd
|