ReferenceCount

from panda3d.core import ReferenceCount

class ReferenceCount

Bases: DTOOL_SUPER_BASE

A base class for all things that want to be reference-counted. ReferenceCount works in conjunction with PointerTo to automatically delete objects when the last pointer to them goes away.

Inheritance diagram

__init__(*args, **kwargs)

getClassType()

C++ Interface: get_class_type()

getRefCount()

C++ Interface: get_ref_count(ReferenceCount self)

/**

• Returns the current reference count.

*/

get_class_type()

C++ Interface: get_class_type()

get_ref_count()

C++ Interface: get_ref_count(ReferenceCount self)

/**

• Returns the current reference count.

*/

ref()

C++ Interface: ref(ReferenceCount self)

/**

• Explicitly increments the reference count. User code should avoid using

• ref() and unref() directly, which can result in missed reference counts.

• Instead, let a PointerTo object manage the reference counting

• automatically.

• This function is const, even though it changes the object, because

• generally fiddling with an object’s reference count isn’t considered part

• of fiddling with the object. An object might be const in other ways, but

• we still need to accurately count the number of references to it.

*/

ref_count

The current reference count.

testRefCountIntegrity()

C++ Interface: test_ref_count_integrity(ReferenceCount self)

/**

• Does some easy checks to make sure that the reference count isn’t

• completely bogus. Returns true if ok, false otherwise.

*/

testRefCountNonzero()

C++ Interface: test_ref_count_nonzero(ReferenceCount self)

/**

• Does some easy checks to make sure that the reference count isn’t zero, or

• completely bogus. Returns true if ok, false otherwise.

*/

test_ref_count_integrity()

C++ Interface: test_ref_count_integrity(ReferenceCount self)

/**

• Does some easy checks to make sure that the reference count isn’t

• completely bogus. Returns true if ok, false otherwise.

*/

test_ref_count_nonzero()

C++ Interface: test_ref_count_nonzero(ReferenceCount self)

/**

• Does some easy checks to make sure that the reference count isn’t zero, or

• completely bogus. Returns true if ok, false otherwise.

*/

unref()

C++ Interface: unref(ReferenceCount self)

/**

• Explicitly decrements the reference count. Note that the object will not

• be implicitly deleted by unref() simply because the reference count drops

• to zero. (Having a member function delete itself is problematic.) However,

• see the helper function unref_delete().

• User code should avoid using ref() and unref() directly, which can result

• in missed reference counts. Instead, let a PointerTo object manage the

• reference counting automatically.

• This function is const, even though it changes the object, because

• generally fiddling with an object’s reference count isn’t considered part

• of fiddling with the object. An object might be const in other ways, but

• we still need to accurately count the number of references to it.

• The return value is true if the new reference count is nonzero, false if it

• is zero.

*/