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gecko/dom/base/nsWrapperCache.h

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/* -*- 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"
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() : mWrapperPtrBits(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 GetJSObjectFromBits();
}
void SetWrapper(JSObject* aWrapper)
{
MOZ_ASSERT(!PreservingWrapper(), "Clearing a preserved wrapper!");
MOZ_ASSERT(aWrapper, "Use ClearWrapper!");
SetWrapperBits(aWrapper);
}
/**
* Clear the wrapper. This should be called from the finalizer for the
* wrapper.
*/
void ClearWrapper()
{
MOZ_ASSERT(!PreservingWrapper(), "Clearing a preserved wrapper!");
SetWrapperBits(NULL);
}
bool PreservingWrapper()
{
return (mWrapperPtrBits & WRAPPER_BIT_PRESERVED) != 0;
}
void SetIsDOMBinding()
{
MOZ_ASSERT(!mWrapperPtrBits,
"This flag should be set before creating any wrappers.");
mWrapperPtrBits = WRAPPER_IS_DOM_BINDING;
}
void ClearIsDOMBinding()
{
MOZ_ASSERT(!mWrapperPtrBits || mWrapperPtrBits == WRAPPER_IS_DOM_BINDING,
"This flag should be cleared before creating any wrappers.");
mWrapperPtrBits = 0;
}
bool IsDOMBinding() const
{
return (mWrapperPtrBits & WRAPPER_IS_DOM_BINDING) != 0;
}
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.");
mWrapperPtrBits |= WRAPPER_HAS_SOW;
}
bool HasSystemOnlyWrapper() const
{
return (mWrapperPtrBits & WRAPPER_HAS_SOW) != 0;
}
/**
* Wrap the object corresponding to this wrapper cache. If non-null is
* returned, the object has already been stored in the wrapper cache and the
* value set in triedToWrap is meaningless. If null is returned then
* triedToWrap indicates whether an error occurred, if it's false then the
* object doesn't actually support creating a wrapper through its WrapObject
* hook.
*/
virtual JSObject* WrapObject(JSContext *cx, JSObject *scope,
bool *triedToWrap)
{
*triedToWrap = false;
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) {
mWrapperPtrBits |= WRAPPER_BIT_PRESERVED;
}
else {
mWrapperPtrBits &= ~WRAPPER_BIT_PRESERVED;
}
}
private:
JSObject *GetJSObjectFromBits() const
{
return reinterpret_cast<JSObject*>(mWrapperPtrBits & ~kWrapperBitMask);
}
void SetWrapperBits(void *aWrapper)
{
mWrapperPtrBits = reinterpret_cast<uintptr_t>(aWrapper) |
(mWrapperPtrBits & WRAPPER_IS_DOM_BINDING);
}
/**
* 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 { kWrapperBitMask = (WRAPPER_BIT_PRESERVED | WRAPPER_IS_DOM_BINDING |
WRAPPER_HAS_SOW) };
uintptr_t mWrapperPtrBits;
};
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<nsWrapperCache*>(this); \
return NS_OK; \
}
// Cycle collector macros for wrapper caches.
#define NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER \
nsContentUtils::TraceWrapper(tmp, aCallback, 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___ */
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