зеркало из https://github.com/mozilla/gecko-dev.git
118 строки
3.0 KiB
C++
118 строки
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 "mozilla/dom/Dispatcher.h"
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#include "mozilla/Move.h"
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#include "nsINamed.h"
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#include "nsQueryObject.h"
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using namespace mozilla;
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nsresult
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DispatcherTrait::Dispatch(const char* aName,
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TaskCategory aCategory,
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already_AddRefed<nsIRunnable>&& aRunnable)
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{
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nsCOMPtr<nsIRunnable> runnable(aRunnable);
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if (aName) {
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if (nsCOMPtr<nsINamed> named = do_QueryInterface(runnable)) {
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named->SetName(aName);
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}
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}
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if (NS_IsMainThread()) {
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return NS_DispatchToCurrentThread(runnable.forget());
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} else {
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return NS_DispatchToMainThread(runnable.forget());
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}
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}
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nsIEventTarget*
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DispatcherTrait::EventTargetFor(TaskCategory aCategory) const
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{
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nsCOMPtr<nsIEventTarget> main = do_GetMainThread();
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return main;
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}
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namespace {
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#define NS_DISPATCHEREVENTTARGET_IID \
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{ 0xbf4e36c8, 0x7d04, 0x4ef4, \
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{ 0xbb, 0xd8, 0x11, 0x09, 0x0a, 0xdb, 0x4d, 0xf7 } }
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class DispatcherEventTarget final : public nsIEventTarget
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{
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RefPtr<dom::Dispatcher> mDispatcher;
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TaskCategory mCategory;
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_DISPATCHEREVENTTARGET_IID)
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DispatcherEventTarget(dom::Dispatcher* aDispatcher, TaskCategory aCategory)
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: mDispatcher(aDispatcher)
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, mCategory(aCategory)
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{}
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSIEVENTTARGET
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dom::Dispatcher* Dispatcher() const { return mDispatcher; }
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private:
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virtual ~DispatcherEventTarget() {}
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(DispatcherEventTarget, NS_DISPATCHEREVENTTARGET_IID)
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} // namespace
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NS_IMPL_ISUPPORTS(DispatcherEventTarget, DispatcherEventTarget, nsIEventTarget)
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NS_IMETHODIMP
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DispatcherEventTarget::DispatchFromScript(nsIRunnable* aRunnable, uint32_t aFlags)
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{
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return Dispatch(do_AddRef(aRunnable), aFlags);
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}
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NS_IMETHODIMP
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DispatcherEventTarget::Dispatch(already_AddRefed<nsIRunnable> aRunnable, uint32_t aFlags)
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{
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if (NS_WARN_IF(aFlags != NS_DISPATCH_NORMAL)) {
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return NS_ERROR_UNEXPECTED;
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}
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return mDispatcher->Dispatch(nullptr, mCategory, Move(aRunnable));
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}
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NS_IMETHODIMP
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DispatcherEventTarget::DelayedDispatch(already_AddRefed<nsIRunnable>, uint32_t)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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DispatcherEventTarget::IsOnCurrentThread(bool* aIsOnCurrentThread)
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{
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*aIsOnCurrentThread = NS_IsMainThread();
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return NS_OK;
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}
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already_AddRefed<nsIEventTarget>
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Dispatcher::CreateEventTargetFor(TaskCategory aCategory)
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{
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RefPtr<DispatcherEventTarget> target =
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new DispatcherEventTarget(this, aCategory);
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return target.forget();
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}
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/* static */ Dispatcher*
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Dispatcher::FromEventTarget(nsIEventTarget* aEventTarget)
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{
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RefPtr<DispatcherEventTarget> target = do_QueryObject(aEventTarget);
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if (!target) {
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return nullptr;
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}
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return target->Dispatcher();
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}
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