nsTArray.cpp - mozsearch

Enable keyboard shortcuts

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsTArray.h"

#include "nsXPCOM.h"

#include "nsCycleCollectionNoteChild.h"

#include "nsDebug.h"

#include "mozilla/CheckedInt.h"

#include "mozilla/IntegerPrintfMacros.h"

// Ensure this is sufficiently aligned so that Elements() and co don't create

// unaligned pointers, or slices with unaligned pointers for empty arrays, see

// https://github.com/servo/servo/issues/22613.

alignas(8) const nsTArrayHeader sEmptyTArrayHeader = {0, 0, 0};

bool IsTwiceTheRequiredBytesRepresentableAsUint32(size_t aCapacity,

                                                  size_t aElemSize) {

  using mozilla::CheckedUint32;

  return ((CheckedUint32(aCapacity) * aElemSize) * 2).isValid();

void ::detail::SetCycleCollectionArrayFlag(uint32_t& aFlags) {

  aFlags |= CycleCollectionEdgeNameArrayFlag;