dom/base/nsWrapperCacheInlines.h@b8a032363ba2 (annotated)
dom/base/nsWrapperCacheInlines.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #ifndef nsWrapperCacheInline_h___ |
| michael@0 | 7 | #define nsWrapperCacheInline_h___ |
| michael@0 | 8 | |
| michael@0 | 9 | #include "nsWrapperCache.h" |
| michael@0 | 10 | #include "js/GCAPI.h" |
| michael@0 | 11 | #include "js/TracingAPI.h" |
| michael@0 | 12 | |
| michael@0 | 13 | inline JSObject* |
| michael@0 | 14 | nsWrapperCache::GetWrapper() const |
| michael@0 | 15 | { |
| michael@0 | 16 | JSObject* obj = GetWrapperPreserveColor(); |
| michael@0 | 17 | if (obj) { |
| michael@0 | 18 | JS::ExposeObjectToActiveJS(obj); |
| michael@0 | 19 | } |
| michael@0 | 20 | return obj; |
| michael@0 | 21 | } |
| michael@0 | 22 | |
| michael@0 | 23 | inline bool |
| michael@0 | 24 | nsWrapperCache::IsBlack() |
| michael@0 | 25 | { |
| michael@0 | 26 | JSObject* o = GetWrapperPreserveColor(); |
| michael@0 | 27 | return o && !JS::GCThingIsMarkedGray(o); |
| michael@0 | 28 | } |
| michael@0 | 29 | |
| michael@0 | 30 | static void |
| michael@0 | 31 | SearchGray(void* aGCThing, const char* aName, void* aClosure) |
| michael@0 | 32 | { |
| michael@0 | 33 | bool* hasGrayObjects = static_cast<bool*>(aClosure); |
| michael@0 | 34 | if (!*hasGrayObjects && aGCThing && JS::GCThingIsMarkedGray(aGCThing)) { |
| michael@0 | 35 | *hasGrayObjects = true; |
| michael@0 | 36 | } |
| michael@0 | 37 | } |
| michael@0 | 38 | |
| michael@0 | 39 | inline bool |
| michael@0 | 40 | nsWrapperCache::HasNothingToTrace(nsISupports* aThis) |
| michael@0 | 41 | { |
| michael@0 | 42 | nsXPCOMCycleCollectionParticipant* participant = nullptr; |
| michael@0 | 43 | CallQueryInterface(aThis, &participant); |
| michael@0 | 44 | bool hasGrayObjects = false; |
| michael@0 | 45 | participant->Trace(aThis, TraceCallbackFunc(SearchGray), &hasGrayObjects); |
| michael@0 | 46 | return !hasGrayObjects; |
| michael@0 | 47 | } |
| michael@0 | 48 | |
| michael@0 | 49 | inline bool |
| michael@0 | 50 | nsWrapperCache::IsBlackAndDoesNotNeedTracing(nsISupports* aThis) |
| michael@0 | 51 | { |
| michael@0 | 52 | return IsBlack() && HasNothingToTrace(aThis); |
| michael@0 | 53 | } |
| michael@0 | 54 | |
| michael@0 | 55 | inline void |
| michael@0 | 56 | nsWrapperCache::TraceWrapperJSObject(JSTracer* aTrc, const char* aName) |
| michael@0 | 57 | { |
| michael@0 | 58 | JS_CallHeapObjectTracer(aTrc, &mWrapper, aName); |
| michael@0 | 59 | } |
| michael@0 | 60 | |
| michael@0 | 61 | #endif /* nsWrapperCache_h___ */ |
