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/*
* Copyright (C) 2017-2022 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#
include
"
config.h
"
#
include
"
JSWeakPrivate.h
"
#
include
"
APICast.h
"
#
include
"
IntegrityInlines.h
"
#
include
"
JSCellInlines.h
"
#
include
"
Weak.h
"
#
include
<
wtf/ThreadSafeRefCounted.h
>
using
namespace
JSC
;
struct
OpaqueJSWeak
: ThreadSafeRefCounted<OpaqueJSWeak> {
OpaqueJSWeak
(JSObject* object)
: weak(object)
{
}
Weak<JSObject> weak;
};
JSWeakRef
JSWeakCreate
(JSContextGroupRef contextGroup, JSObjectRef objectRef)
{
VM
* vm =
toJS
(contextGroup);
JSLockHolder
locker
(vm);
return
new
OpaqueJSWeak
(
toJS
(objectRef));
}
void
JSWeakRetain
(JSContextGroupRef contextGroup, JSWeakRef weakRef)
{
VM
* vm =
toJS
(contextGroup);
JSLockHolder
locker
(vm);
weakRef->
ref
();
}
void
JSWeakRelease
(JSContextGroupRef contextGroup, JSWeakRef weakRef)
{
VM
* vm =
toJS
(contextGroup);
JSLockHolder
locker
(vm);
weakRef->
deref
();
}
JSObjectRef
JSWeakGetObject
(JSWeakRef weakRef)
{
return
toRef
(weakRef->
weak
.
get
());
}
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