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469b0c1c65
Depends on D145737 Differential Revision: https://phabricator.services.mozilla.com/D145738
46 lines
1.2 KiB
C++
46 lines
1.2 KiB
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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#ifndef nsCCUncollectableMarker_h_
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#define nsCCUncollectableMarker_h_
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#include "js/TracingAPI.h"
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#include "mozilla/Attributes.h"
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#include "nsIObserver.h"
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class nsCCUncollectableMarker final : public nsIObserver {
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NS_DECL_ISUPPORTS
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NS_DECL_NSIOBSERVER
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/**
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* Inits a global nsCCUncollectableMarker. Should only be called once.
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*/
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static nsresult Init();
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/**
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* Checks if we're collecting during a given generation
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*/
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static bool InGeneration(uint32_t aGeneration) {
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return aGeneration && aGeneration == sGeneration;
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}
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template <class CCCallback>
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static bool InGeneration(CCCallback& aCb, uint32_t aGeneration) {
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return InGeneration(aGeneration) && !aCb.WantAllTraces();
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}
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static uint32_t sGeneration;
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private:
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nsCCUncollectableMarker() = default;
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~nsCCUncollectableMarker() = default;
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};
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namespace mozilla::dom {
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void TraceBlackJS(JSTracer* aTrc);
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} // namespace mozilla::dom
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#endif
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