mirror of
https://github.com/matrix-construct/construct
synced 2024-12-12 00:22:58 +01:00
88 lines
1.6 KiB
C++
88 lines
1.6 KiB
C++
// Matrix Construct
|
|
//
|
|
// Copyright (C) Matrix Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2019 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_CONCURRENT_H
|
|
|
|
namespace ircd::ctx
|
|
{
|
|
template<class value> struct concurrent;
|
|
}
|
|
|
|
template<class value>
|
|
struct ircd::ctx::concurrent
|
|
{
|
|
using closure = std::function<void (value)>;
|
|
|
|
pool &p;
|
|
closure c;
|
|
dock d;
|
|
size_t snd {0};
|
|
size_t rcv {0};
|
|
size_t fin {0};
|
|
std::exception_ptr eptr;
|
|
|
|
template<class V> void operator()(V&&);
|
|
void wait();
|
|
|
|
concurrent(pool &, closure);
|
|
~concurrent() noexcept;
|
|
};
|
|
|
|
template<class value>
|
|
ircd::ctx::concurrent<value>::concurrent(pool &p,
|
|
closure c)
|
|
|
|
:p{p}
|
|
,c{std::move(c)}
|
|
{}
|
|
|
|
template<class value>
|
|
ircd::ctx::concurrent<value>::~concurrent()
|
|
noexcept
|
|
{
|
|
const uninterruptible::nothrow ui;
|
|
this->wait();
|
|
}
|
|
|
|
template<class value>
|
|
void
|
|
ircd::ctx::concurrent<value>::wait()
|
|
{
|
|
d.wait([this]() noexcept
|
|
{
|
|
return snd == fin;
|
|
});
|
|
}
|
|
|
|
template<class value>
|
|
template<class V>
|
|
void
|
|
ircd::ctx::concurrent<value>::operator()(V&& v)
|
|
{
|
|
++snd;
|
|
p([this, v(std::move(v))]() noexcept
|
|
{
|
|
++rcv; try
|
|
{
|
|
c(std::move(v));
|
|
}
|
|
catch(...)
|
|
{
|
|
eptr = std::current_exception();
|
|
}
|
|
|
|
++fin;
|
|
d.notify_all();
|
|
});
|
|
|
|
if(eptr)
|
|
std::rethrow_exception(eptr);
|
|
}
|