dom/base/nsCCUncollectableMarker.h
author Simon Whitehead <chemnova@gmail.com>
Sat, 13 May 2017 15:12:15 -0500
changeset 358329 633151f5d481d49bd39900d43e6a75d77459a7bb
parent 252586 91d6e262b662a0b4e47358665e222d3927337af9
child 391707 3f861ed63d1194889a059fe8d0650416d613187a
permissions -rw-r--r--
servo: Merge #16829 - Disallow negative duration for animation and transition (from hiikezoe:disallow-negative-duration); r=emilio <!-- Please describe your changes on the following line: --> --- <!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: --> - [X] `./mach build -d` does not report any errors - [X] `./mach test-tidy` does not report any errors - [X] These changes fix #15343 <!-- Either: --> - [X] There are tests for these changes written by @simon-whitehead . Thank you! <!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.--> <!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. --> Source-Repo: https://github.com/servo/servo Source-Revision: 4613c0382ab76263fb8202ccf52f4c0520e44809

/* -*- 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/. */

#ifndef nsCCUncollectableMarker_h_
#define nsCCUncollectableMarker_h_

#include "js/TracingAPI.h"
#include "mozilla/Attributes.h"
#include "nsIObserver.h"

class nsCCUncollectableMarker final : public nsIObserver
{
  NS_DECL_ISUPPORTS
  NS_DECL_NSIOBSERVER

  /**
   * Inits a global nsCCUncollectableMarker. Should only be called once.
   */
  static nsresult Init();

  /**
   * Checks if we're collecting during a given generation
   */
  static bool InGeneration(uint32_t aGeneration)
  {
    return aGeneration && aGeneration == sGeneration;
  }

  template <class CCCallback>
  static bool InGeneration(CCCallback& aCb, uint32_t aGeneration)
  {
    return InGeneration(aGeneration) && !aCb.WantAllTraces();
  }

  static uint32_t sGeneration;

private:
  nsCCUncollectableMarker() {}
  ~nsCCUncollectableMarker() {}
};

namespace mozilla {
namespace dom {
void TraceBlackJS(JSTracer* aTrc, uint32_t aGCNumber, bool aIsShutdownGC);
} // namespace dom
} // namespace mozilla

#endif