michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "nsCycleCollectionParticipant.h"
michael@0: #include "nsCOMPtr.h"
michael@0: #include "jsapi.h"
michael@0: 
michael@0: #ifdef MOZILLA_INTERNAL_API
michael@0: #include "nsString.h"
michael@0: #else
michael@0: #include "nsStringAPI.h"
michael@0: #endif
michael@0: 
michael@0: void
michael@0: nsScriptObjectTracer::NoteJSChild(void *aScriptThing, const char *name,
michael@0:                                   void *aClosure)
michael@0: {
michael@0:   nsCycleCollectionTraversalCallback *cb =
michael@0:     static_cast<nsCycleCollectionTraversalCallback*>(aClosure);
michael@0:   NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*cb, name);
michael@0:   cb->NoteJSChild(aScriptThing);
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP_(void)
michael@0: nsXPCOMCycleCollectionParticipant::Root(void *p)
michael@0: {
michael@0:     nsISupports *s = static_cast<nsISupports*>(p);
michael@0:     NS_ADDREF(s);
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP_(void)
michael@0: nsXPCOMCycleCollectionParticipant::Unroot(void *p)
michael@0: {
michael@0:     nsISupports *s = static_cast<nsISupports*>(p);
michael@0:     NS_RELEASE(s);
michael@0: }
michael@0: 
michael@0: // We define a default trace function because some participants don't need
michael@0: // to trace anything, so it is okay for them not to define one.
michael@0: NS_IMETHODIMP_(void)
michael@0: nsXPCOMCycleCollectionParticipant::Trace(void *p, const TraceCallbacks &cb,
michael@0:                                          void *closure)
michael@0: {
michael@0: }
michael@0: 
michael@0: bool
michael@0: nsXPCOMCycleCollectionParticipant::CheckForRightISupports(nsISupports *s)
michael@0: {
michael@0:     nsISupports* foo;
michael@0:     s->QueryInterface(NS_GET_IID(nsCycleCollectionISupports),
michael@0:                       reinterpret_cast<void**>(&foo));
michael@0:     return s == foo;
michael@0: }
michael@0: 
michael@0: void
michael@0: CycleCollectionNoteEdgeNameImpl(nsCycleCollectionTraversalCallback& aCallback,
michael@0:                                 const char* aName,
michael@0:                                 uint32_t aFlags)
michael@0: {
michael@0:   nsAutoCString arrayEdgeName(aName);
michael@0:   if (aFlags & CycleCollectionEdgeNameArrayFlag) {
michael@0:     arrayEdgeName.AppendLiteral("[i]");
michael@0:   }
michael@0:   aCallback.NoteNextEdgeName(arrayEdgeName.get());
michael@0: }
michael@0: 
michael@0: void
michael@0: TraceCallbackFunc::Trace(JS::Heap<JS::Value>* p, const char* name, void* closure) const
michael@0: {
michael@0:   if (p->isMarkable()) {
michael@0:     mCallback(p->toGCThing(), name, closure);
michael@0:   }
michael@0: }
michael@0: 
michael@0: void
michael@0: TraceCallbackFunc::Trace(JS::Heap<jsid>* p, const char* name, void* closure) const
michael@0: {
michael@0:   void *thing = JSID_TO_GCTHING(*p);
michael@0:   if (thing) {
michael@0:     mCallback(thing, name, closure);
michael@0:   }
michael@0: }
michael@0: 
michael@0: void
michael@0: TraceCallbackFunc::Trace(JS::Heap<JSObject*>* p, const char* name, void* closure) const
michael@0: {
michael@0:   mCallback(*p, name, closure);
michael@0: }
michael@0: 
michael@0: void
michael@0: TraceCallbackFunc::Trace(JS::TenuredHeap<JSObject*>* p, const char* name, void* closure) const
michael@0: {
michael@0:   mCallback(*p, name, closure);
michael@0: }
michael@0: 
michael@0: void
michael@0: TraceCallbackFunc::Trace(JS::Heap<JSFunction*>* p, const char* name, void* closure) const
michael@0: {
michael@0:   mCallback(*p, name, closure);
michael@0: }
michael@0: 
michael@0: void
michael@0: TraceCallbackFunc::Trace(JS::Heap<JSString*>* p, const char* name, void* closure) const
michael@0: {
michael@0:   mCallback(*p, name, closure);
michael@0: }
michael@0: 
michael@0: void
michael@0: TraceCallbackFunc::Trace(JS::Heap<JSScript*>* p, const char* name, void* closure) const
michael@0: {
michael@0:   mCallback(p->get(), name, closure);
michael@0: }