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1e2af615c7
We extract the dealing of direct tasks from the TailDispatcher object and move into to the existing nsThread and TaskQueue classes. TaskQueue is made to work with do_QueryInterface. We continue accessing the direct tasks dispatcher via the TailDispatcher for now, which itself will forward the dealing of such tasks to the underlying thread. Differential Revision: https://phabricator.services.mozilla.com/D79093
58 lines
1.7 KiB
Plaintext
58 lines
1.7 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsIRunnable.idl"
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%{C++
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#include "mozilla/AlreadyAddRefed.h"
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%}
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native alreadyAddRefed_nsIRunnable(already_AddRefed<nsIRunnable>);
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/*
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* The primary use of this interface is to allow any nsISerialEventTarget to
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* provide Direct Task dispatching which is similar (but not identical to) the
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* microtask semantics of JS promises.
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* New direct task may be dispatched when a current direct task is running. In
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* which case they will be run in FIFO order.
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*/
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[builtinclass, uuid(e05bf0fe-94b7-4e28-8462-a8368da9c136)]
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interface nsIDirectTaskDispatcher : nsISupports
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{
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/**
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* Dispatch an event for the nsISerialEventTarget, using the direct task
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* queue.
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*
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* This function must be called from the same nsISerialEventTarget
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* implementing direct task dispatching.
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*
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* @param event
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* The alreadyAddRefed<> event to dispatch.
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*
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*/
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[noscript] void dispatchDirectTask(in alreadyAddRefed_nsIRunnable event);
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/**
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* Synchronously run any pending direct tasks queued.
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*/
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[noscript] void drainDirectTasks();
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/**
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* Returns true if any direct tasks are pending.
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*/
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[noscript] bool haveDirectTasks();
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%{C++
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// Infallible version of the above. Will assert that it is successful.
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bool HaveDirectTasks() {
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bool value = false;
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MOZ_ALWAYS_SUCCEEDS(HaveDirectTasks(&value));
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return value;
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}
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%}
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};
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