f81a55d58a
This adds a container that supports the same operations as JSHolderMap but doesn't use a hash map to look up the holder on add/remove. Instead it stores the location of the entry in the holder itself. I don't love this approach of adding extra parallel APIs so any suggestions for improvement are welcome. This is kind of a request for feedback as much as a review request. Differential Revision: https://phabricator.services.mozilla.com/D241053
90 lines
3.3 KiB
C++
90 lines
3.3 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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#include "mozilla/HoldDropJSObjects.h"
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#include "mozilla/Assertions.h"
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#include "mozilla/CycleCollectedJSRuntime.h"
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namespace mozilla {
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namespace cyclecollector {
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void HoldJSObjectsImpl(void* aHolder, nsScriptObjectTracer* aTracer,
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JS::Zone* aZone) {
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CycleCollectedJSRuntime* rt = CycleCollectedJSRuntime::Get();
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MOZ_ASSERT(rt, "Should have a CycleCollectedJSRuntime by now");
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rt->AddJSHolder(aHolder, aTracer, aZone);
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}
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void HoldJSObjectsWithKeyImpl(void* aHolder, nsScriptObjectTracer* aTracer,
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JSHolderKey* aKey) {
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CycleCollectedJSRuntime* rt = CycleCollectedJSRuntime::Get();
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MOZ_ASSERT(rt, "Should have a CycleCollectedJSRuntime by now");
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rt->AddJSHolderWithKey(aHolder, aTracer, aKey);
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}
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void HoldJSObjectsImpl(nsISupports* aHolder) {
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nsXPCOMCycleCollectionParticipant* participant = nullptr;
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CallQueryInterface(aHolder, &participant);
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MOZ_ASSERT(participant, "Failed to QI to nsXPCOMCycleCollectionParticipant!");
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MOZ_ASSERT(
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participant->CheckForRightISupports(aHolder),
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"The result of QIing a JS holder should be the same as ToSupports");
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HoldJSObjectsImpl(aHolder, participant);
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}
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void HoldJSObjectsWithKeyImpl(nsISupports* aHolder, JSHolderKey* aKey) {
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nsXPCOMCycleCollectionParticipant* participant = nullptr;
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CallQueryInterface(aHolder, &participant);
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MOZ_ASSERT(participant, "Failed to QI to nsXPCOMCycleCollectionParticipant!");
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MOZ_ASSERT(
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participant->CheckForRightISupports(aHolder),
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"The result of QIing a JS holder should be the same as ToSupports");
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HoldJSObjectsWithKeyImpl(aHolder, participant, aKey);
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}
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void DropJSObjectsImpl(void* aHolder) {
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CycleCollectedJSRuntime* rt = CycleCollectedJSRuntime::Get();
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MOZ_ASSERT(rt, "Should have a CycleCollectedJSRuntime by now");
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rt->RemoveJSHolder(aHolder);
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}
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void DropJSObjectsWithKeyImpl(void* aHolder, JSHolderKey* aKey) {
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CycleCollectedJSRuntime* rt = CycleCollectedJSRuntime::Get();
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MOZ_ASSERT(rt, "Should have a CycleCollectedJSRuntime by now");
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rt->RemoveJSHolderWithKey(aHolder, aKey);
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}
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void DropJSObjectsImpl(nsISupports* aHolder) {
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#ifdef DEBUG
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nsXPCOMCycleCollectionParticipant* participant = nullptr;
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CallQueryInterface(aHolder, &participant);
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MOZ_ASSERT(participant, "Failed to QI to nsXPCOMCycleCollectionParticipant!");
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MOZ_ASSERT(
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participant->CheckForRightISupports(aHolder),
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"The result of QIing a JS holder should be the same as ToSupports");
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#endif
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DropJSObjectsImpl(static_cast<void*>(aHolder));
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}
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void DropJSObjectsWithKeyImpl(nsISupports* aHolder, JSHolderKey* aKey) {
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#ifdef DEBUG
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nsXPCOMCycleCollectionParticipant* participant = nullptr;
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CallQueryInterface(aHolder, &participant);
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MOZ_ASSERT(participant, "Failed to QI to nsXPCOMCycleCollectionParticipant!");
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MOZ_ASSERT(
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participant->CheckForRightISupports(aHolder),
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"The result of QIing a JS holder should be the same as ToSupports");
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#endif
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DropJSObjectsWithKeyImpl(static_cast<void*>(aHolder), aKey);
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}
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} // namespace cyclecollector
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} // namespace mozilla
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