46 lines
1.1 KiB
Text
46 lines
1.1 KiB
Text
|
/**
|
||
|
|
* PANDA 3D SOFTWARE
|
||
|
|
* Copyright (c) Carnegie Mellon University. All rights reserved.
|
||
|
|
*
|
||
|
|
* All use of this software is subject to the terms of the revised BSD
|
||
|
|
* license. You should have received a copy of this license along
|
||
|
|
* with this source code in a file named "LICENSE."
|
||
|
|
*
|
||
|
|
* @file weakReferenceList.I
|
||
|
|
* @author drose
|
||
|
|
* @date 2004-09-27
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Increases the number of weak references.
|
||
|
|
*
|
||
|
|
* @since 1.10.0
|
||
|
|
*/
|
||
|
|
INLINE void WeakReferenceList::
|
||
|
|
ref() const {
|
||
|
|
AtomicAdjust::inc(_count);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Decreases the number of weak references. Returns true if, after this,
|
||
|
|
* there are still any weak or strong references remaining, or false if this
|
||
|
|
* structure should be deleted right away.
|
||
|
|
*
|
||
|
|
* @since 1.10.0
|
||
|
|
*/
|
||
|
|
INLINE bool WeakReferenceList::
|
||
|
|
unref() const {
|
||
|
|
return AtomicAdjust::dec(_count);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns true if the object represented has been deleted, ie. there are only
|
||
|
|
* weak references left pointing to the object.
|
||
|
|
*
|
||
|
|
* @since 1.10.0
|
||
|
|
*/
|
||
|
|
INLINE bool WeakReferenceList::
|
||
|
|
was_deleted() const {
|
||
|
|
return AtomicAdjust::get(_count) < _alive_offset;
|
||
|
|
}
|