The Tor Browser: js/xpconnect/src/XPCWrappedNativeScope.cpp@6474c204b198 (annotated)

js/xpconnect/src/XPCWrappedNativeScope.cpp@6474c204b198 (annotated)

js/xpconnect/src/XPCWrappedNativeScope.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 /* vim: set ts=8 sts=4 et sw=4 tw=99: */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 /* Class used to manage the wrapped native objects within a JS scope. */
 #include "xpcprivate.h"
 #include "XPCWrapper.h"
 #include "nsContentUtils.h"
 #include "nsCycleCollectionNoteRootCallback.h"
 #include "nsPrincipal.h"
 #include "mozilla/MemoryReporting.h"
 #include "mozilla/Preferences.h"
 #include "mozilla/dom/BindingUtils.h"
 using namespace mozilla;
 using namespace xpc;
 using namespace JS;
 /***************************************************************************/
 XPCWrappedNativeScope* XPCWrappedNativeScope::gScopes = nullptr;
 XPCWrappedNativeScope* XPCWrappedNativeScope::gDyingScopes = nullptr;
 // static
 XPCWrappedNativeScope*
 XPCWrappedNativeScope::GetNewOrUsed(JSContext *cx, JS::HandleObject aGlobal)
 {
     XPCWrappedNativeScope* scope = GetObjectScope(aGlobal);
     if (!scope) {
         scope = new XPCWrappedNativeScope(cx, aGlobal);
     }
     return scope;
 }
 static bool
 RemoteXULForbidsXBLScope(nsIPrincipal *aPrincipal, HandleObject aGlobal)
 {
   // Check for random JSD scopes that don't have a principal.
   if (!aPrincipal)
       return false;
   // The SafeJSContext is lazily created, and tends to be created at really
   // weird times, at least for xpcshell (often very early in startup or late
   // in shutdown). Its scope isn't system principal, so if we proceeded we'd
   // end up calling into AllowXULXBLForPrincipal, which depends on all kinds
   // of persistent storage and permission machinery that may or not be running.
   // We know the answer to the question here, so just short-circuit.
   if (JS_GetClass(aGlobal) == &SafeJSContextGlobalClass)
       return false;
   // AllowXULXBLForPrincipal will return true for system principal, but we
   // don't want that here.
   MOZ_ASSERT(nsContentUtils::IsInitialized());
   if (nsContentUtils::IsSystemPrincipal(aPrincipal))
       return false;
   // If this domain isn't whitelisted, we're done.
   if (!nsContentUtils::AllowXULXBLForPrincipal(aPrincipal))
       return false;
   // Check the pref to determine how we should behave.
   return !Preferences::GetBool("dom.use_xbl_scopes_for_remote_xul", false);
 }
 XPCWrappedNativeScope::XPCWrappedNativeScope(JSContext *cx,
                                              JS::HandleObject aGlobal)
       : mWrappedNativeMap(Native2WrappedNativeMap::newMap(XPC_NATIVE_MAP_SIZE)),
         mWrappedNativeProtoMap(ClassInfo2WrappedNativeProtoMap::newMap(XPC_NATIVE_PROTO_MAP_SIZE)),
         mComponents(nullptr),
         mNext(nullptr),
         mGlobalJSObject(aGlobal),
         mIsXBLScope(false)
 {
     // add ourselves to the scopes list
     {
         MOZ_ASSERT(aGlobal);
         MOZ_ASSERT(js::GetObjectClass(aGlobal)->flags & (JSCLASS_PRIVATE_IS_NSISUPPORTS |
                                                          JSCLASS_HAS_PRIVATE));
 #ifdef DEBUG
         for (XPCWrappedNativeScope* cur = gScopes; cur; cur = cur->mNext)
             MOZ_ASSERT(aGlobal != cur->GetGlobalJSObjectPreserveColor(), "dup object");
 #endif
         mNext = gScopes;
         gScopes = this;
         // Grab the XPCContext associated with our context.
         mContext = XPCContext::GetXPCContext(cx);
         mContext->AddScope(this);
     }
     MOZ_COUNT_CTOR(XPCWrappedNativeScope);
     // Attach ourselves to the compartment private.
     CompartmentPrivate *priv = EnsureCompartmentPrivate(aGlobal);
     priv->scope = this;
     // Determine whether we would allow an XBL scope in this situation.
     // In addition to being pref-controlled, we also disable XBL scopes for
     // remote XUL domains, _except_ if we have an additional pref override set.
     nsIPrincipal *principal = GetPrincipal();
     mAllowXBLScope = !RemoteXULForbidsXBLScope(principal, aGlobal);
     // Determine whether to use an XBL scope.
     mUseXBLScope = mAllowXBLScope;
     if (mUseXBLScope) {
       const js::Class *clasp = js::GetObjectClass(mGlobalJSObject);
       mUseXBLScope = !strcmp(clasp->name, "Window") ||
                      !strcmp(clasp->name, "ChromeWindow") ||
                      !strcmp(clasp->name, "ModalContentWindow");
     }
     if (mUseXBLScope) {
       mUseXBLScope = principal && !nsContentUtils::IsSystemPrincipal(principal);
     }
 }
 // static
 bool
 XPCWrappedNativeScope::IsDyingScope(XPCWrappedNativeScope *scope)
 {
     for (XPCWrappedNativeScope *cur = gDyingScopes; cur; cur = cur->mNext) {
         if (scope == cur)
             return true;
     }
     return false;
 }
 bool
 XPCWrappedNativeScope::GetComponentsJSObject(JS::MutableHandleObject obj)
 {
     AutoJSContext cx;
     if (!mComponents) {
         nsIPrincipal *p = GetPrincipal();
         bool system = XPCWrapper::GetSecurityManager()->IsSystemPrincipal(p);
         mComponents = system ? new nsXPCComponents(this)
                              : new nsXPCComponentsBase(this);
     }
     RootedValue val(cx);
     xpcObjectHelper helper(mComponents);
     bool ok = XPCConvert::NativeInterface2JSObject(&val, nullptr, helper,
                                                    nullptr, nullptr, false,
                                                    nullptr);
     if (NS_WARN_IF(!ok))
         return false;
     if (NS_WARN_IF(!val.isObject()))
         return false;
     // The call to wrap() here is necessary even though the object is same-
     // compartment, because it applies our security wrapper.
     obj.set(&val.toObject());
     if (NS_WARN_IF(!JS_WrapObject(cx, obj)))
         return false;
     return true;
 }
 void
 XPCWrappedNativeScope::ForcePrivilegedComponents()
 {
     // This may only be called on unprivileged scopes during automation where
     // we allow insecure things.
     MOZ_RELEASE_ASSERT(Preferences::GetBool("security.turn_off_all_security_so_"
                                             "that_viruses_can_take_over_this_"
                                             "computer"));
     nsCOMPtr<nsIXPCComponents> c = do_QueryInterface(mComponents);
     if (!c)
         mComponents = new nsXPCComponents(this);
 }
 bool
 XPCWrappedNativeScope::AttachComponentsObject(JSContext* aCx)
 {
     RootedObject components(aCx);
     if (!GetComponentsJSObject(&components))
         return false;
     RootedObject global(aCx, GetGlobalJSObject());
     MOZ_ASSERT(js::IsObjectInContextCompartment(global, aCx));
     RootedId id(aCx, XPCJSRuntime::Get()->GetStringID(XPCJSRuntime::IDX_COMPONENTS));
     return JS_DefinePropertyById(aCx, global, id, ObjectValue(*components),
                                  nullptr, nullptr, JSPROP_PERMANENT | JSPROP_READONLY);
 }
 JSObject*
 XPCWrappedNativeScope::EnsureXBLScope(JSContext *cx)
 {
     JS::RootedObject global(cx, GetGlobalJSObject());
     MOZ_ASSERT(js::IsObjectInContextCompartment(global, cx));
     MOZ_ASSERT(!mIsXBLScope);
     MOZ_ASSERT(strcmp(js::GetObjectClass(global)->name,
                       "nsXBLPrototypeScript compilation scope"));
     // If we already have a special XBL scope object, we know what to use.
     if (mXBLScope)
         return mXBLScope;
     // If this scope doesn't need an XBL scope, just return the global.
     if (!mUseXBLScope)
         return global;
     // Set up the sandbox options. Note that we use the DOM global as the
     // sandboxPrototype so that the XBL scope can access all the DOM objects
     // it's accustomed to accessing.
     //
     // NB: One would think that wantXrays wouldn't make a difference here.
     // However, wantXrays lives a secret double life, and one of its other
     // hobbies is to waive Xray on the returned sandbox when set to false.
     // So make sure to keep this set to true, here.
     SandboxOptions options;
     options.wantXrays = true;
     options.wantComponents = true;
     options.proto = global;
     options.sameZoneAs = global;
     // Use an nsExpandedPrincipal to create asymmetric security.
     nsIPrincipal *principal = GetPrincipal();
     nsCOMPtr<nsIExpandedPrincipal> ep;
     MOZ_ASSERT(!(ep = do_QueryInterface(principal)));
     nsTArray< nsCOMPtr<nsIPrincipal> > principalAsArray(1);
     principalAsArray.AppendElement(principal);
     ep = new nsExpandedPrincipal(principalAsArray);
     // Create the sandbox.
     RootedValue v(cx);
     nsresult rv = CreateSandboxObject(cx, &v, ep, options);
     NS_ENSURE_SUCCESS(rv, nullptr);
     mXBLScope = &v.toObject();
     // Tag it.
     EnsureCompartmentPrivate(js::UncheckedUnwrap(mXBLScope))->scope->mIsXBLScope = true;
     // Good to go!
     return mXBLScope;
 }
 bool
 XPCWrappedNativeScope::AllowXBLScope()
 {
     // We only disallow XBL scopes in remote XUL situations.
     MOZ_ASSERT_IF(!mAllowXBLScope,
                   nsContentUtils::AllowXULXBLForPrincipal(GetPrincipal()));
     return mAllowXBLScope;
 }
 namespace xpc {
 JSObject *GetXBLScope(JSContext *cx, JSObject *contentScopeArg)
 {
     JS::RootedObject contentScope(cx, contentScopeArg);
     JSAutoCompartment ac(cx, contentScope);
     JSObject *scope = EnsureCompartmentPrivate(contentScope)->scope->EnsureXBLScope(cx);
     NS_ENSURE_TRUE(scope, nullptr); // See bug 858642.
     scope = js::UncheckedUnwrap(scope);
     JS::ExposeObjectToActiveJS(scope);
     return scope;
 }
 bool AllowXBLScope(JSCompartment *c)
 {
   XPCWrappedNativeScope *scope = EnsureCompartmentPrivate(c)->scope;
   return scope && scope->AllowXBLScope();
 }
 bool UseXBLScope(JSCompartment *c)
 {
   XPCWrappedNativeScope *scope = EnsureCompartmentPrivate(c)->scope;
   return scope && scope->UseXBLScope();
 }
 } /* namespace xpc */
 XPCWrappedNativeScope::~XPCWrappedNativeScope()
 {
     MOZ_COUNT_DTOR(XPCWrappedNativeScope);
     // We can do additional cleanup assertions here...
     if (mWrappedNativeMap) {
         MOZ_ASSERT(0 == mWrappedNativeMap->Count(), "scope has non-empty map");
         delete mWrappedNativeMap;
     }
     if (mWrappedNativeProtoMap) {
         MOZ_ASSERT(0 == mWrappedNativeProtoMap->Count(), "scope has non-empty map");
         delete mWrappedNativeProtoMap;
     }
     if (mContext)
         mContext->RemoveScope(this);
     // This should not be necessary, since the Components object should die
     // with the scope but just in case.
     if (mComponents)
         mComponents->mScope = nullptr;
     // XXX we should assert that we are dead or that xpconnect has shutdown
     // XXX might not want to do this at xpconnect shutdown time???
     mComponents = nullptr;
     if (mXrayExpandos.initialized())
         mXrayExpandos.destroy();
     JSRuntime *rt = XPCJSRuntime::Get()->Runtime();
     mXBLScope.finalize(rt);
     mGlobalJSObject.finalize(rt);
 }
 static PLDHashOperator
 WrappedNativeJSGCThingTracer(PLDHashTable *table, PLDHashEntryHdr *hdr,
                              uint32_t number, void *arg)
 {
     XPCWrappedNative* wrapper = ((Native2WrappedNativeMap::Entry*)hdr)->value;
     if (wrapper->HasExternalReference() && !wrapper->IsWrapperExpired())
         wrapper->TraceSelf((JSTracer *)arg);
     return PL_DHASH_NEXT;
 }
 // static
 void
 XPCWrappedNativeScope::TraceWrappedNativesInAllScopes(JSTracer* trc, XPCJSRuntime* rt)
 {
     // Do JS_CallTracer for all wrapped natives with external references, as
     // well as any DOM expando objects.
     for (XPCWrappedNativeScope* cur = gScopes; cur; cur = cur->mNext) {
         cur->mWrappedNativeMap->Enumerate(WrappedNativeJSGCThingTracer, trc);
         if (cur->mDOMExpandoSet) {
             for (DOMExpandoSet::Enum e(*cur->mDOMExpandoSet); !e.empty(); e.popFront())
                 JS_CallHashSetObjectTracer(trc, e, e.front(), "DOM expando object");
         }
     }
 }
 static PLDHashOperator
 WrappedNativeSuspecter(PLDHashTable *table, PLDHashEntryHdr *hdr,
                        uint32_t number, void *arg)
 {
     XPCWrappedNative* wrapper = ((Native2WrappedNativeMap::Entry*)hdr)->value;
     if (wrapper->HasExternalReference()) {
         nsCycleCollectionNoteRootCallback *cb =
             static_cast<nsCycleCollectionNoteRootCallback *>(arg);
         XPCJSRuntime::SuspectWrappedNative(wrapper, *cb);
     }
     return PL_DHASH_NEXT;
 }
 static void
 SuspectDOMExpandos(JSObject *obj, nsCycleCollectionNoteRootCallback &cb)
 {
     MOZ_ASSERT(dom::GetDOMClass(obj) && dom::GetDOMClass(obj)->mDOMObjectIsISupports);
     nsISupports* native = dom::UnwrapDOMObject<nsISupports>(obj);
     cb.NoteXPCOMRoot(native);
 }
 // static
 void
 XPCWrappedNativeScope::SuspectAllWrappers(XPCJSRuntime* rt,
                                           nsCycleCollectionNoteRootCallback& cb)
 {
     for (XPCWrappedNativeScope* cur = gScopes; cur; cur = cur->mNext) {
         cur->mWrappedNativeMap->Enumerate(WrappedNativeSuspecter, &cb);
         if (cur->mDOMExpandoSet) {
             for (DOMExpandoSet::Range r = cur->mDOMExpandoSet->all(); !r.empty(); r.popFront())
                 SuspectDOMExpandos(r.front(), cb);
         }
     }
 }
 // static
 void
 XPCWrappedNativeScope::StartFinalizationPhaseOfGC(JSFreeOp *fop, XPCJSRuntime* rt)
 {
     // We are in JSGC_MARK_END and JSGC_FINALIZE_END must always follow it
     // calling FinishedFinalizationPhaseOfGC and clearing gDyingScopes in
     // KillDyingScopes.
     MOZ_ASSERT(!gDyingScopes, "JSGC_MARK_END without JSGC_FINALIZE_END");
     XPCWrappedNativeScope* prev = nullptr;
     XPCWrappedNativeScope* cur = gScopes;
     while (cur) {
         // Sweep waivers.
         if (cur->mWaiverWrapperMap)
             cur->mWaiverWrapperMap->Sweep();
         XPCWrappedNativeScope* next = cur->mNext;
         if (cur->mGlobalJSObject && cur->mGlobalJSObject.isAboutToBeFinalized()) {
             cur->mGlobalJSObject.finalize(fop->runtime());
             // Move this scope from the live list to the dying list.
             if (prev)
                 prev->mNext = next;
             else
                 gScopes = next;
             cur->mNext = gDyingScopes;
             gDyingScopes = cur;
             cur = nullptr;
         }
         if (cur)
             prev = cur;
         cur = next;
     }
 }
 // static
 void
 XPCWrappedNativeScope::FinishedFinalizationPhaseOfGC()
 {
     KillDyingScopes();
 }
 static PLDHashOperator
 WrappedNativeMarker(PLDHashTable *table, PLDHashEntryHdr *hdr,
                     uint32_t number_t, void *arg)
 {
     ((Native2WrappedNativeMap::Entry*)hdr)->value->Mark();
     return PL_DHASH_NEXT;
 }
 // We need to explicitly mark all the protos too because some protos may be
 // alive in the hashtable but not currently in use by any wrapper
 static PLDHashOperator
 WrappedNativeProtoMarker(PLDHashTable *table, PLDHashEntryHdr *hdr,
                          uint32_t number, void *arg)
 {
     ((ClassInfo2WrappedNativeProtoMap::Entry*)hdr)->value->Mark();
     return PL_DHASH_NEXT;
 }
 // static
 void
 XPCWrappedNativeScope::MarkAllWrappedNativesAndProtos()
 {
     for (XPCWrappedNativeScope* cur = gScopes; cur; cur = cur->mNext) {
         cur->mWrappedNativeMap->Enumerate(WrappedNativeMarker, nullptr);
         cur->mWrappedNativeProtoMap->Enumerate(WrappedNativeProtoMarker, nullptr);
     }
 }
 #ifdef DEBUG
 static PLDHashOperator
 ASSERT_WrappedNativeSetNotMarked(PLDHashTable *table, PLDHashEntryHdr *hdr,
                                  uint32_t number, void *arg)
 {
     ((Native2WrappedNativeMap::Entry*)hdr)->value->ASSERT_SetsNotMarked();
     return PL_DHASH_NEXT;
 }
 static PLDHashOperator
 ASSERT_WrappedNativeProtoSetNotMarked(PLDHashTable *table, PLDHashEntryHdr *hdr,
                                       uint32_t number, void *arg)
 {
     ((ClassInfo2WrappedNativeProtoMap::Entry*)hdr)->value->ASSERT_SetNotMarked();
     return PL_DHASH_NEXT;
 }
 // static
 void
 XPCWrappedNativeScope::ASSERT_NoInterfaceSetsAreMarked()
 {
     for (XPCWrappedNativeScope* cur = gScopes; cur; cur = cur->mNext) {
         cur->mWrappedNativeMap->Enumerate(ASSERT_WrappedNativeSetNotMarked, nullptr);
         cur->mWrappedNativeProtoMap->Enumerate(ASSERT_WrappedNativeProtoSetNotMarked, nullptr);
     }
 }
 #endif
 static PLDHashOperator
 WrappedNativeTearoffSweeper(PLDHashTable *table, PLDHashEntryHdr *hdr,
                             uint32_t number, void *arg)
 {
     ((Native2WrappedNativeMap::Entry*)hdr)->value->SweepTearOffs();
     return PL_DHASH_NEXT;
 }
 // static
 void
 XPCWrappedNativeScope::SweepAllWrappedNativeTearOffs()
 {
     for (XPCWrappedNativeScope* cur = gScopes; cur; cur = cur->mNext)
         cur->mWrappedNativeMap->Enumerate(WrappedNativeTearoffSweeper, nullptr);
 }
 // static
 void
 XPCWrappedNativeScope::KillDyingScopes()
 {
     XPCWrappedNativeScope* cur = gDyingScopes;
     while (cur) {
         XPCWrappedNativeScope* next = cur->mNext;
         if (cur->mGlobalJSObject)
             GetCompartmentPrivate(cur->mGlobalJSObject)->scope = nullptr;
         delete cur;
         cur = next;
     }
     gDyingScopes = nullptr;
 }
 struct ShutdownData
 {
     ShutdownData()
         : wrapperCount(0),
           protoCount(0) {}
     int wrapperCount;
     int protoCount;
 };
 static PLDHashOperator
 WrappedNativeShutdownEnumerator(PLDHashTable *table, PLDHashEntryHdr *hdr,
                                 uint32_t number, void *arg)
 {
     ShutdownData* data = (ShutdownData*) arg;
     XPCWrappedNative* wrapper = ((Native2WrappedNativeMap::Entry*)hdr)->value;
     if (wrapper->IsValid()) {
         wrapper->SystemIsBeingShutDown();
         data->wrapperCount++;
     }
     return PL_DHASH_REMOVE;
 }
 static PLDHashOperator
 WrappedNativeProtoShutdownEnumerator(PLDHashTable *table, PLDHashEntryHdr *hdr,
                                      uint32_t number, void *arg)
 {
     ShutdownData* data = (ShutdownData*) arg;
     ((ClassInfo2WrappedNativeProtoMap::Entry*)hdr)->value->
         SystemIsBeingShutDown();
     data->protoCount++;
     return PL_DHASH_REMOVE;
 }
 //static
 void
 XPCWrappedNativeScope::SystemIsBeingShutDown()
 {
     int liveScopeCount = 0;
     ShutdownData data;
     XPCWrappedNativeScope* cur;
     // First move all the scopes to the dying list.
     cur = gScopes;
     while (cur) {
         XPCWrappedNativeScope* next = cur->mNext;
         cur->mNext = gDyingScopes;
         gDyingScopes = cur;
         cur = next;
         liveScopeCount++;
     }
     gScopes = nullptr;
     // We're forcibly killing scopes, rather than allowing them to go away
     // when they're ready. As such, we need to do some cleanup before they
     // can safely be destroyed.
     for (cur = gDyingScopes; cur; cur = cur->mNext) {
         // Give the Components object a chance to try to clean up.
         if (cur->mComponents)
             cur->mComponents->SystemIsBeingShutDown();
         // Walk the protos first. Wrapper shutdown can leave dangling
         // proto pointers in the proto map.
         cur->mWrappedNativeProtoMap->
                 Enumerate(WrappedNativeProtoShutdownEnumerator,  &data);
         cur->mWrappedNativeMap->
                 Enumerate(WrappedNativeShutdownEnumerator,  &data);
     }
     // Now it is safe to kill all the scopes.
     KillDyingScopes();
 }
 /***************************************************************************/
 static PLDHashOperator
 WNProtoRemover(PLDHashTable *table, PLDHashEntryHdr *hdr,
                uint32_t number, void *arg)
 {
     XPCWrappedNativeProtoMap* detachedMap = (XPCWrappedNativeProtoMap*)arg;
     XPCWrappedNativeProto* proto = (XPCWrappedNativeProto*)
         ((ClassInfo2WrappedNativeProtoMap::Entry*)hdr)->value;
     detachedMap->Add(proto);
     return PL_DHASH_REMOVE;
 }
 void
 XPCWrappedNativeScope::RemoveWrappedNativeProtos()
 {
     mWrappedNativeProtoMap->Enumerate(WNProtoRemover,
                                       GetRuntime()->GetDetachedWrappedNativeProtoMap());
 }
 JSObject *
 XPCWrappedNativeScope::GetExpandoChain(HandleObject target)
 {
     MOZ_ASSERT(GetObjectScope(target) == this);
     if (!mXrayExpandos.initialized())
         return nullptr;
     return mXrayExpandos.lookup(target);
 }
 bool
 XPCWrappedNativeScope::SetExpandoChain(JSContext *cx, HandleObject target,
                                        HandleObject chain)
 {
     MOZ_ASSERT(GetObjectScope(target) == this);
     MOZ_ASSERT(js::IsObjectInContextCompartment(target, cx));
     MOZ_ASSERT_IF(chain, GetObjectScope(chain) == this);
     if (!mXrayExpandos.initialized() && !mXrayExpandos.init(cx))
         return false;
     return mXrayExpandos.put(cx, target, chain);
 }
 /***************************************************************************/
 // static
 void
 XPCWrappedNativeScope::DebugDumpAllScopes(int16_t depth)
 {
 #ifdef DEBUG
     depth-- ;
     // get scope count.
     int count = 0;
     XPCWrappedNativeScope* cur;
     for (cur = gScopes; cur; cur = cur->mNext)
         count++ ;
     XPC_LOG_ALWAYS(("chain of %d XPCWrappedNativeScope(s)", count));
     XPC_LOG_INDENT();
         XPC_LOG_ALWAYS(("gDyingScopes @ %x", gDyingScopes));
         if (depth)
             for (cur = gScopes; cur; cur = cur->mNext)
                 cur->DebugDump(depth);
     XPC_LOG_OUTDENT();
 #endif
 }
 #ifdef DEBUG
 static PLDHashOperator
 WrappedNativeMapDumpEnumerator(PLDHashTable *table, PLDHashEntryHdr *hdr,
                                uint32_t number, void *arg)
 {
     ((Native2WrappedNativeMap::Entry*)hdr)->value->DebugDump(*(int16_t*)arg);
     return PL_DHASH_NEXT;
 }
 static PLDHashOperator
 WrappedNativeProtoMapDumpEnumerator(PLDHashTable *table, PLDHashEntryHdr *hdr,
                                     uint32_t number, void *arg)
 {
     ((ClassInfo2WrappedNativeProtoMap::Entry*)hdr)->value->DebugDump(*(int16_t*)arg);
     return PL_DHASH_NEXT;
 }
 #endif
 void
 XPCWrappedNativeScope::DebugDump(int16_t depth)
 {
 #ifdef DEBUG
     depth-- ;
     XPC_LOG_ALWAYS(("XPCWrappedNativeScope @ %x", this));
     XPC_LOG_INDENT();
         XPC_LOG_ALWAYS(("mNext @ %x", mNext));
         XPC_LOG_ALWAYS(("mComponents @ %x", mComponents.get()));
         XPC_LOG_ALWAYS(("mGlobalJSObject @ %x", mGlobalJSObject.get()));
         XPC_LOG_ALWAYS(("mWrappedNativeMap @ %x with %d wrappers(s)",         \
                         mWrappedNativeMap,                                    \
                         mWrappedNativeMap ? mWrappedNativeMap->Count() : 0));
         // iterate contexts...
         if (depth && mWrappedNativeMap && mWrappedNativeMap->Count()) {
             XPC_LOG_INDENT();
             mWrappedNativeMap->Enumerate(WrappedNativeMapDumpEnumerator, &depth);
             XPC_LOG_OUTDENT();
         }
         XPC_LOG_ALWAYS(("mWrappedNativeProtoMap @ %x with %d protos(s)",      \
                         mWrappedNativeProtoMap,                               \
                         mWrappedNativeProtoMap ? mWrappedNativeProtoMap->Count() : 0));
         // iterate contexts...
         if (depth && mWrappedNativeProtoMap && mWrappedNativeProtoMap->Count()) {
             XPC_LOG_INDENT();
             mWrappedNativeProtoMap->Enumerate(WrappedNativeProtoMapDumpEnumerator, &depth);
             XPC_LOG_OUTDENT();
         }
     XPC_LOG_OUTDENT();
 #endif
 }
 void
 XPCWrappedNativeScope::AddSizeOfAllScopesIncludingThis(ScopeSizeInfo* scopeSizeInfo)
 {
     for (XPCWrappedNativeScope *cur = gScopes; cur; cur = cur->mNext)
         cur->AddSizeOfIncludingThis(scopeSizeInfo);
 }
 void
 XPCWrappedNativeScope::AddSizeOfIncludingThis(ScopeSizeInfo* scopeSizeInfo)
 {
     scopeSizeInfo->mScopeAndMapSize += scopeSizeInfo->mMallocSizeOf(this);
     scopeSizeInfo->mScopeAndMapSize +=
         mWrappedNativeMap->SizeOfIncludingThis(scopeSizeInfo->mMallocSizeOf);
     scopeSizeInfo->mScopeAndMapSize +=
         mWrappedNativeProtoMap->SizeOfIncludingThis(scopeSizeInfo->mMallocSizeOf);
     if (dom::HasProtoAndIfaceCache(mGlobalJSObject)) {
         dom::ProtoAndIfaceCache* cache = dom::GetProtoAndIfaceCache(mGlobalJSObject);
         scopeSizeInfo->mProtoAndIfaceCacheSize +=
             cache->SizeOfIncludingThis(scopeSizeInfo->mMallocSizeOf);
     }
     // There are other XPCWrappedNativeScope members that could be measured;
     // the above ones have been seen by DMD to be worth measuring.  More stuff
     // may be added later.
 }

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js/xpconnect/src/XPCWrappedNativeScope.cpp@6474c204b198 (annotated)

js/xpconnect/src/XPCWrappedNativeScope.cpp