mirror of
https://github.com/matrix-construct/construct
synced 2024-12-01 19:22:53 +01:00
60 lines
2.3 KiB
C++
60 lines
2.3 KiB
C++
// The Construct
|
|
//
|
|
// Copyright (C) The Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2020 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_IOS_DISPATCH_H
|
|
|
|
namespace ircd::ios
|
|
{
|
|
struct dispatch;
|
|
|
|
/// Hard flag to indicate the function is not to be executed during this
|
|
/// epoch, and enqueued instead. This results in asynchronous behavior
|
|
/// from dispatch(), returning immediately to the caller.
|
|
IRCD_OVERLOAD(defer)
|
|
|
|
/// Hard flag to indicate the current `ircd::context` will yield until the
|
|
/// function is executed, regardless of the mode of that execution. This
|
|
/// results in synchronous behavior from dispatch().
|
|
IRCD_OVERLOAD(yield)
|
|
}
|
|
|
|
namespace ircd
|
|
{
|
|
using ios::dispatch;
|
|
}
|
|
|
|
/// Schedule execution on the core event loop.
|
|
struct ircd::ios::dispatch
|
|
{
|
|
/// Direct dispatch (main stack only): a handler context switch will be
|
|
/// made but the function will be executed immediately on this stack.
|
|
/// Returns directly after the function has completed.
|
|
dispatch(descriptor &, std::function<void ()>);
|
|
|
|
/// Direct dispatch (context stacks only): a context switch will be made
|
|
/// but the function will be executed immediately on this stack. Returns
|
|
/// directly after the function has completed.
|
|
dispatch(descriptor &, yield_t, const std::function<void ()> &);
|
|
|
|
/// Queued dispatch: push the function to be executed at a later epoch on
|
|
/// the main stack. Returns immediately.
|
|
dispatch(descriptor &, defer_t, std::function<void ()>);
|
|
|
|
/// Queued dispatch (context stacks only): push the function to be executed
|
|
/// at a later epoch on the main stack, while suspending this context.
|
|
/// Returns sometime after the function has completed.
|
|
dispatch(descriptor &, defer_t, yield_t, const std::function<void ()> &);
|
|
|
|
/// Courtesy yield (alternative to ctx::yield()). This queues a null
|
|
/// function and suspends this context until its completion. Intended to
|
|
/// allow other contexts to execute before continuing this context.
|
|
dispatch(descriptor &, defer_t, yield_t);
|
|
};
|