netwerk/base/RedirectChannelRegistrar.h
author Edgar Chen <echen@mozilla.com>
Tue, 17 Sep 2019 01:12:07 +0000
changeset 493515 9596d7f4a7457bccc78cadf9c39bcc9c4b5b97f8
parent 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1579858 - Should release RefPtr before CollectData is clear; r=smaug mAboutToBeNotifiedRejectedPromises will be clear in AfterProcessMicrotasks() and mPendingUnhandledRejections will be clear after NotifyUnhandledRejections runnable is handled. However, worker could terminate in any time, we still need to clear those structures manually before CollectData is clear. Differential Revision: https://phabricator.services.mozilla.com/D46095

/* 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/. */

#ifndef RedirectChannelRegistrar_h__
#define RedirectChannelRegistrar_h__

#include "nsIRedirectChannelRegistrar.h"

#include "nsIChannel.h"
#include "nsIParentChannel.h"
#include "nsInterfaceHashtable.h"
#include "mozilla/Attributes.h"
#include "mozilla/Mutex.h"

namespace mozilla {
namespace net {

class RedirectChannelRegistrar final : public nsIRedirectChannelRegistrar {
  NS_DECL_ISUPPORTS
  NS_DECL_NSIREDIRECTCHANNELREGISTRAR

  RedirectChannelRegistrar();

 private:
  ~RedirectChannelRegistrar() = default;

 public:
  // Singleton accessor
  static already_AddRefed<nsIRedirectChannelRegistrar> GetOrCreate();

  // Cleanup the singleton instance on shutdown
  static void Shutdown();

 protected:
  typedef nsInterfaceHashtable<nsUint32HashKey, nsIChannel> ChannelHashtable;
  typedef nsInterfaceHashtable<nsUint32HashKey, nsIParentChannel>
      ParentChannelHashtable;

  ChannelHashtable mRealChannels;
  ParentChannelHashtable mParentChannels;
  uint32_t mId;
  Mutex mLock;

  static StaticRefPtr<RedirectChannelRegistrar> gSingleton;
};

}  // namespace net
}  // namespace mozilla

#endif