The Tor Browser / file comparison
comparison: xpcom/glue/HoldDropJSObjects.h
xpcom/glue/HoldDropJSObjects.h
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:82bfaae30896 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef mozilla_HoldDropJSObjects_h | |
| 8 #define mozilla_HoldDropJSObjects_h | |
| 9 | |
| 10 #include "mozilla/TypeTraits.h" | |
| 11 #include "nsCycleCollectionParticipant.h" | |
| 12 | |
| 13 class nsISupports; | |
| 14 class nsScriptObjectTracer; | |
| 15 | |
| 16 // Only HoldJSObjects and DropJSObjects should be called directly. | |
| 17 | |
| 18 namespace mozilla { | |
| 19 namespace cyclecollector { | |
| 20 | |
| 21 // These methods are defined in nsCycleCollector.cpp | |
| 22 void HoldJSObjectsImpl(void* aHolder, nsScriptObjectTracer* aTracer); | |
| 23 void HoldJSObjectsImpl(nsISupports* aHolder); | |
| 24 void DropJSObjectsImpl(void* aHolder); | |
| 25 void DropJSObjectsImpl(nsISupports* aHolder); | |
| 26 | |
| 27 } // namespace cyclecollector | |
| 28 | |
| 29 | |
| 30 template<class T, bool isISupports=IsBaseOf<nsISupports, T>::value> | |
| 31 struct HoldDropJSObjectsHelper | |
| 32 { | |
| 33 static void Hold(T* aHolder) | |
| 34 { | |
| 35 cyclecollector::HoldJSObjectsImpl(aHolder, NS_CYCLE_COLLECTION_PARTICIPANT(T)); | |
| 36 } | |
| 37 static void Drop(T* aHolder) | |
| 38 { | |
| 39 cyclecollector::DropJSObjectsImpl(aHolder); | |
| 40 } | |
| 41 }; | |
| 42 | |
| 43 template<class T> | |
| 44 struct HoldDropJSObjectsHelper<T, true> | |
| 45 { | |
| 46 static void Hold(T* aHolder) | |
| 47 { | |
| 48 cyclecollector::HoldJSObjectsImpl(ToSupports(aHolder)); | |
| 49 } | |
| 50 static void Drop(T* aHolder) | |
| 51 { | |
| 52 cyclecollector::DropJSObjectsImpl(ToSupports(aHolder)); | |
| 53 } | |
| 54 }; | |
| 55 | |
| 56 | |
| 57 template<class T> | |
| 58 void HoldJSObjects(T* aHolder) | |
| 59 { | |
| 60 HoldDropJSObjectsHelper<T>::Hold(aHolder); | |
| 61 } | |
| 62 | |
| 63 template<class T> | |
| 64 void DropJSObjects(T* aHolder) | |
| 65 { | |
| 66 HoldDropJSObjectsHelper<T>::Drop(aHolder); | |
| 67 } | |
| 68 | |
| 69 } // namespace mozilla | |
| 70 | |
| 71 #endif // mozilla_HoldDropJSObjects_h |
