/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* 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/. */ #ifndef nsWrapperCache_h___ #define nsWrapperCache_h___ #include "nsCycleCollectionParticipant.h" #include "mozilla/Assertions.h" #include "js/Value.h" struct JSTracer; class JSObject; struct JSContext; class XPCWrappedNativeScope; namespace mozilla { namespace dom { namespace workers { class DOMBindingBase; } // namespace workers } // namespace dom } // namespace mozilla #define NS_WRAPPERCACHE_IID \ { 0x6f3179a1, 0x36f7, 0x4a5c, \ { 0x8c, 0xf1, 0xad, 0xc8, 0x7c, 0xde, 0x3e, 0x87 } } /** * Class to store the wrapper for an object. This can only be used with objects * that only have one non-security wrapper at a time (for an XPCWrappedNative * this is usually ensured by setting an explicit parent in the PreCreate hook * for the class). * * An instance of nsWrapperCache can be gotten from an object that implements * a wrapper cache by calling QueryInterface on it. Note that this breaks XPCOM * rules a bit (this object doesn't derive from nsISupports). * * The cache can store objects other than wrappers. We allow wrappers to use a * separate JSObject to store their state (mostly expandos). If the wrapper is * collected and we want to preserve this state we actually store the state * object in the cache. * * The cache can store 2 types of objects: * * If WRAPPER_IS_DOM_BINDING is not set (IsDOMBinding() returns false): * - a slim wrapper or the JSObject of an XPCWrappedNative wrapper * * If WRAPPER_IS_DOM_BINDING is set (IsDOMBinding() returns true): * - a DOM binding object (regular JS object or proxy) * * The finalizer for the wrapper clears the cache. * * A number of the methods are implemented in nsWrapperCacheInlines.h because we * have to include some JS headers that don't play nicely with the rest of the * codebase. Include nsWrapperCacheInlines.h if you need to call those methods. */ class nsWrapperCache { friend class mozilla::dom::workers::DOMBindingBase; public: NS_DECLARE_STATIC_IID_ACCESSOR(NS_WRAPPERCACHE_IID) nsWrapperCache() : mWrapper(nullptr), mFlags(0) { } ~nsWrapperCache() { MOZ_ASSERT(!PreservingWrapper(), "Destroying cache with a preserved wrapper!"); } /** * Get the cached wrapper. * * This getter clears the gray bit before handing out the JSObject which means * that the object is guaranteed to be kept alive past the next CC. */ JSObject* GetWrapper() const; /** * Get the cached wrapper. * * This getter does not change the color of the JSObject meaning that the * object returned is not guaranteed to be kept alive past the next CC. * * This should only be called if you are certain that the return value won't * be passed into a JS API function and that it won't be stored without being * rooted (or otherwise signaling the stored value to the CC). */ JSObject* GetWrapperPreserveColor() const { return GetWrapperJSObject(); } void SetWrapper(JSObject* aWrapper) { MOZ_ASSERT(!PreservingWrapper(), "Clearing a preserved wrapper!"); MOZ_ASSERT(aWrapper, "Use ClearWrapper!"); SetWrapperJSObject(aWrapper); } /** * Clear the wrapper. This should be called from the finalizer for the * wrapper. */ void ClearWrapper() { MOZ_ASSERT(!PreservingWrapper(), "Clearing a preserved wrapper!"); SetWrapperJSObject(nullptr); } bool PreservingWrapper() { return HasWrapperFlag(WRAPPER_BIT_PRESERVED); } void SetIsDOMBinding() { MOZ_ASSERT(!mWrapper && !(GetWrapperFlags() & ~WRAPPER_IS_DOM_BINDING), "This flag should be set before creating any wrappers."); SetWrapperFlags(WRAPPER_IS_DOM_BINDING); } bool IsDOMBinding() const { return HasWrapperFlag(WRAPPER_IS_DOM_BINDING); } void SetHasSystemOnlyWrapper() { MOZ_ASSERT(GetWrapperPreserveColor(), "This flag should be set after wrapper creation."); MOZ_ASSERT(IsDOMBinding(), "This flag should only be set for DOM bindings."); SetWrapperFlags(WRAPPER_HAS_SOW); } bool HasSystemOnlyWrapper() const { return HasWrapperFlag(WRAPPER_HAS_SOW); } /** * Wrap the object corresponding to this wrapper cache. If non-null is * returned, the object has already been stored in the wrapper cache. */ virtual JSObject* WrapObject(JSContext* cx, JS::Handle scope) { MOZ_ASSERT(!IsDOMBinding(), "Someone forgot to override WrapObject"); return nullptr; } /** * Returns true if the object has a non-gray wrapper. */ bool IsBlack(); /** * Returns true if the object has a black wrapper, * and all the GC things it is keeping alive are black too. */ bool IsBlackAndDoesNotNeedTracing(nsISupports* aThis); // Only meant to be called by code that preserves a wrapper. void SetPreservingWrapper(bool aPreserve) { if(aPreserve) { SetWrapperFlags(WRAPPER_BIT_PRESERVED); } else { UnsetWrapperFlags(WRAPPER_BIT_PRESERVED); } } void TraceWrapper(const TraceCallbacks& aCallbacks, void* aClosure) { if (PreservingWrapper() && mWrapper) { aCallbacks.Trace(&mWrapper, "Preserved wrapper", aClosure); } } /* * The following methods for getting and manipulating flags allow the unused * bits of mFlags to be used by derived classes. */ uint32_t GetFlags() const { return mFlags & ~kWrapperFlagsMask; } bool HasFlag(uint32_t aFlag) const { MOZ_ASSERT((aFlag & kWrapperFlagsMask) == 0, "Bad flag mask"); return !!(mFlags & aFlag); } void SetFlags(uint32_t aFlagsToSet) { MOZ_ASSERT((aFlagsToSet & kWrapperFlagsMask) == 0, "Bad flag mask"); mFlags |= aFlagsToSet; } void UnsetFlags(uint32_t aFlagsToUnset) { MOZ_ASSERT((aFlagsToUnset & kWrapperFlagsMask) == 0, "Bad flag mask"); mFlags &= ~aFlagsToUnset; } void PreserveWrapper(nsISupports* aScriptObjectHolder) { if (PreservingWrapper()) { return; } nsISupports* ccISupports; aScriptObjectHolder->QueryInterface(NS_GET_IID(nsCycleCollectionISupports), reinterpret_cast(&ccISupports)); MOZ_ASSERT(ccISupports); nsXPCOMCycleCollectionParticipant* participant; CallQueryInterface(ccISupports, &participant); PreserveWrapper(ccISupports, participant); } void PreserveWrapper(void* aScriptObjectHolder, nsScriptObjectTracer* aTracer) { if (PreservingWrapper()) { return; } HoldJSObjects(aScriptObjectHolder, aTracer); SetPreservingWrapper(true); #ifdef DEBUG // Make sure the cycle collector will be able to traverse to the wrapper. CheckCCWrapperTraversal(aScriptObjectHolder, aTracer); #endif } private: JSObject *GetWrapperJSObject() const { return mWrapper; } void SetWrapperJSObject(JSObject* aWrapper) { mWrapper = aWrapper; UnsetWrapperFlags(kWrapperFlagsMask & ~WRAPPER_IS_DOM_BINDING); } void TraceWrapperJSObject(JSTracer* aTrc, const char* aName); uint32_t GetWrapperFlags() const { return mFlags & kWrapperFlagsMask; } bool HasWrapperFlag(uint32_t aFlag) const { MOZ_ASSERT((aFlag & ~kWrapperFlagsMask) == 0, "Bad wrapper flag bits"); return !!(mFlags & aFlag); } void SetWrapperFlags(uint32_t aFlagsToSet) { MOZ_ASSERT((aFlagsToSet & ~kWrapperFlagsMask) == 0, "Bad wrapper flag bits"); mFlags |= aFlagsToSet; } void UnsetWrapperFlags(uint32_t aFlagsToUnset) { MOZ_ASSERT((aFlagsToUnset & ~kWrapperFlagsMask) == 0, "Bad wrapper flag bits"); mFlags &= ~aFlagsToUnset; } static void HoldJSObjects(void* aScriptObjectHolder, nsScriptObjectTracer* aTracer); #ifdef DEBUG void CheckCCWrapperTraversal(void* aScriptObjectHolder, nsScriptObjectTracer* aTracer); #endif // DEBUG /** * If this bit is set then we're preserving the wrapper, which in effect ties * the lifetime of the JS object stored in the cache to the lifetime of the * native object. We rely on the cycle collector to break the cycle that this * causes between the native object and the JS object, so it is important that * any native object that supports preserving of its wrapper * traces/traverses/unlinks the cached JS object (see * NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER, * NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS and * NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER). */ enum { WRAPPER_BIT_PRESERVED = 1 << 0 }; /** * If this bit is set then the wrapper for the native object is a DOM binding * (regular JS object or proxy). */ enum { WRAPPER_IS_DOM_BINDING = 1 << 1 }; /** * If this bit is set then the wrapper for the native object is a DOM binding * (regular JS object or proxy) that has a system only wrapper for same-origin * access. */ enum { WRAPPER_HAS_SOW = 1 << 2 }; enum { kWrapperFlagsMask = (WRAPPER_BIT_PRESERVED | WRAPPER_IS_DOM_BINDING | WRAPPER_HAS_SOW) }; JS::Heap mWrapper; uint32_t mFlags; }; enum { WRAPPER_CACHE_FLAGS_BITS_USED = 3 }; NS_DEFINE_STATIC_IID_ACCESSOR(nsWrapperCache, NS_WRAPPERCACHE_IID) #define NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY \ if ( aIID.Equals(NS_GET_IID(nsWrapperCache)) ) { \ *aInstancePtr = static_cast(this); \ return NS_OK; \ } // Cycle collector macros for wrapper caches. #define NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER \ tmp->TraceWrapper(aCallbacks, aClosure); #define NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER \ nsContentUtils::ReleaseWrapper(p, tmp); #define NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(_class) \ NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER \ NS_IMPL_CYCLE_COLLECTION_TRACE_END #define NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(_class) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER \ NS_IMPL_CYCLE_COLLECTION_UNLINK_END \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END \ NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(_class) #define NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_1(_class, _field) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER \ NS_IMPL_CYCLE_COLLECTION_UNLINK_END \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END \ NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(_class) #define NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_2(_class, _field1,\ _field2) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field1) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field2) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER \ NS_IMPL_CYCLE_COLLECTION_UNLINK_END \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field1) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field2) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END \ NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(_class) #define NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_3(_class, _field1,\ _field2, \ _field3) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field1) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field2) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field3) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER \ NS_IMPL_CYCLE_COLLECTION_UNLINK_END \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field1) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field2) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field3) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END \ NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(_class) #define NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_4(_class, _field1,\ _field2, \ _field3, \ _field4) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field1) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field2) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field3) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field4) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER \ NS_IMPL_CYCLE_COLLECTION_UNLINK_END \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field1) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field2) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field3) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field4) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END \ NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(_class) #define NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_5(_class, _field1,\ _field2, \ _field3, \ _field4, \ _field5) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field1) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field2) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field3) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field4) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field5) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER \ NS_IMPL_CYCLE_COLLECTION_UNLINK_END \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field1) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field2) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field3) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field4) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field5) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END \ NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(_class) #define NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_6(_class, _field1,\ _field2, \ _field3, \ _field4, \ _field5, \ _field6) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field1) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field2) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field3) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field4) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field5) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field6) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER \ NS_IMPL_CYCLE_COLLECTION_UNLINK_END \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field1) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field2) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field3) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field4) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field5) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field6) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END \ NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(_class) #define NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_7(_class, _field1,\ _field2, \ _field3, \ _field4, \ _field5, \ _field6, \ _field7) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field1) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field2) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field3) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field4) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field5) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field6) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field7) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER \ NS_IMPL_CYCLE_COLLECTION_UNLINK_END \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field1) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field2) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field3) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field4) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field5) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field6) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field7) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END \ NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(_class) #define NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_8(_class, _field1,\ _field2, \ _field3, \ _field4, \ _field5, \ _field6, \ _field7, \ _field8) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field1) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field2) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field3) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field4) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field5) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field6) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field7) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field8) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER \ NS_IMPL_CYCLE_COLLECTION_UNLINK_END \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field1) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field2) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field3) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field4) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field5) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field6) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field7) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field8) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END \ NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(_class) #define NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_9(_class, _field1,\ _field2, \ _field3, \ _field4, \ _field5, \ _field6, \ _field7, \ _field8, \ _field9) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field1) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field2) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field3) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field4) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field5) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field6) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field7) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field8) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field9) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER \ NS_IMPL_CYCLE_COLLECTION_UNLINK_END \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field1) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field2) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field3) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field4) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field5) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field6) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field7) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field8) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field9) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END \ NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(_class) #define NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_10(_class, _field1,\ _field2, \ _field3, \ _field4, \ _field5, \ _field6, \ _field7, \ _field8, \ _field9, \ _field10) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field1) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field2) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field3) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field4) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field5) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field6) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field7) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field8) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field9) \ NS_IMPL_CYCLE_COLLECTION_UNLINK(_field10) \ NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER \ NS_IMPL_CYCLE_COLLECTION_UNLINK_END \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(_class) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field1) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field2) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field3) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field4) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field5) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field6) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field7) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field8) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field9) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_field10) \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS \ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END \ NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(_class) #endif /* nsWrapperCache_h___ */