dom/abort/AbortController.cpp
author Rob Wood <rwood@mozilla.com>
Tue, 25 Jun 2019 08:28:58 +0000
changeset 480057 d5b60a2a9cd9ebebe089503474ace5dd2c2eaf9a
parent 461887 f41cee9bf14931b453838d1bbcbda528e3b064e8
permissions -rw-r--r--
Bug 1546661 - Enable cold page loads tests for Reference Browser on Try r=perftest-reviewers,Bebe,sparky Differential Revision: https://phabricator.services.mozilla.com/D35568

/* -*- 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 "AbortController.h"
#include "AbortSignal.h"
#include "mozilla/dom/AbortControllerBinding.h"
#include "mozilla/dom/WorkerPrivate.h"

namespace mozilla {
namespace dom {

NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(AbortController, mGlobal, mSignal)

NS_IMPL_CYCLE_COLLECTING_ADDREF(AbortController)
NS_IMPL_CYCLE_COLLECTING_RELEASE(AbortController)

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(AbortController)
  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
  NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END

/* static */
already_AddRefed<AbortController> AbortController::Constructor(
    const GlobalObject& aGlobal, ErrorResult& aRv) {
  nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
  if (!global) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<AbortController> abortController = new AbortController(global);
  return abortController.forget();
}

AbortController::AbortController(nsIGlobalObject* aGlobal)
    : mGlobal(aGlobal), mAborted(false) {}

JSObject* AbortController::WrapObject(JSContext* aCx,
                                      JS::Handle<JSObject*> aGivenProto) {
  return AbortController_Binding::Wrap(aCx, this, aGivenProto);
}

nsIGlobalObject* AbortController::GetParentObject() const { return mGlobal; }

AbortSignal* AbortController::Signal() {
  if (!mSignal) {
    mSignal = new AbortSignal(mGlobal, mAborted);
  }

  return mSignal;
}

void AbortController::Abort() {
  if (mAborted) {
    return;
  }

  mAborted = true;

  if (mSignal) {
    mSignal->Abort();
  }
}

}  // namespace dom
}  // namespace mozilla