forked from mirrors/gecko-dev
ce897c182a
This patch splits out AnimationFrameProvider from the Document WebIDL to allow the workers to implement it. It also splits out a helper class to manage the requestAnimationFrame callbacks which may be reused on a worker thread. Differential Revision: https://phabricator.services.mozilla.com/D130262
53 lines
1.6 KiB
C++
53 lines
1.6 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/AnimationFrameProvider.h"
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#include "nsThreadUtils.h"
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namespace mozilla::dom {
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FrameRequest::FrameRequest(FrameRequestCallback& aCallback, int32_t aHandle)
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: mCallback(&aCallback), mHandle(aHandle) {
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LogFrameRequestCallback::LogDispatch(mCallback);
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}
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FrameRequest::~FrameRequest() = default;
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nsresult FrameRequestManager::Schedule(FrameRequestCallback& aCallback,
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int32_t* aHandle) {
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if (mCallbackCounter == INT32_MAX) {
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// Can't increment without overflowing; bail out
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return NS_ERROR_NOT_AVAILABLE;
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}
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int32_t newHandle = ++mCallbackCounter;
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mCallbacks.AppendElement(FrameRequest(aCallback, newHandle));
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*aHandle = newHandle;
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return NS_OK;
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}
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bool FrameRequestManager::Cancel(int32_t aHandle) {
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// mCallbacks is stored sorted by handle
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if (mCallbacks.RemoveElementSorted(aHandle)) {
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return true;
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}
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Unused << mCanceledCallbacks.put(aHandle);
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return false;
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}
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void FrameRequestManager::Unlink() { mCallbacks.Clear(); }
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void FrameRequestManager::Traverse(nsCycleCollectionTraversalCallback& aCB) {
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for (auto& i : mCallbacks) {
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NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(aCB,
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"FrameRequestManager::mCallbacks[i]");
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aCB.NoteXPCOMChild(i.mCallback);
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}
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}
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} // namespace mozilla::dom
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