8963ed4514
Add an alternative for Promise::All that doesn't create a final promise, and that restricts the amount of microtasks further. This algorithm is defined in the WebIDL spec[1], and is used by #navigate-event-firing from the Navigation API. Also add ImplCycleCollectionTrace to make it possible to configure the NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK step and trace aggregate traceable objects, much like ImplCycleCollectionTraverse. Also add helpers for defining ImplCycleCollectionTrace and ImplCycleCollectionTraverse in one step using either ImplCycleCollectionContainer or ImplCycleCollectionIndexedContainer. [1] https://webidl.spec.whatwg.org/#wait-for-all Differential Revision: https://phabricator.services.mozilla.com/D238785
24 lines
1012 B
C++
24 lines
1012 B
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 "nsTArray.h"
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#include "nsXPCOM.h"
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#include "nsCycleCollectionNoteChild.h"
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#include "nsDebug.h"
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#include "mozilla/CheckedInt.h"
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#include "mozilla/IntegerPrintfMacros.h"
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// Ensure this is sufficiently aligned so that Elements() and co don't create
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// unaligned pointers, or slices with unaligned pointers for empty arrays, see
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// https://github.com/servo/servo/issues/22613.
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alignas(8) const nsTArrayHeader sEmptyTArrayHeader = {0, 0, 0};
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bool IsTwiceTheRequiredBytesRepresentableAsUint32(size_t aCapacity,
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size_t aElemSize) {
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using mozilla::CheckedUint32;
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return ((CheckedUint32(aCapacity) * aElemSize) * 2).isValid();
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}
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