132 lines
4.3 KiB
Plaintext
132 lines
4.3 KiB
Plaintext
// Filename: nodePointerToBase.I
|
|
// Created by: drose (07May05)
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
//
|
|
// 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."
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: NodePointerToBase::Constructor
|
|
// Access: Protected
|
|
// Description:
|
|
////////////////////////////////////////////////////////////////////
|
|
template<class T>
|
|
INLINE NodePointerToBase<T>::
|
|
NodePointerToBase(To *ptr) {
|
|
reassign(ptr);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: NodePointerToBase::Copy Constructor
|
|
// Access: Protected
|
|
// Description:
|
|
////////////////////////////////////////////////////////////////////
|
|
template<class T>
|
|
INLINE NodePointerToBase<T>::
|
|
NodePointerToBase(const NodePointerToBase<T> ©) {
|
|
reassign(copy);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: NodePointerToBase::Destructor
|
|
// Access: Protected
|
|
// Description:
|
|
////////////////////////////////////////////////////////////////////
|
|
template<class T>
|
|
INLINE NodePointerToBase<T>::
|
|
~NodePointerToBase() {
|
|
reassign((To *)NULL);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: NodePointerToBase::reassign
|
|
// Access: Protected
|
|
// Description: This is the main work of the NodePointerTo family. When
|
|
// the pointer is reassigned, decrement the old
|
|
// reference count and increment the new one.
|
|
////////////////////////////////////////////////////////////////////
|
|
template<class T>
|
|
void NodePointerToBase<T>::
|
|
reassign(To *ptr) {
|
|
if (ptr != (To *)_void_ptr) {
|
|
// First save the old pointer; we won't delete it until we have
|
|
// assigned the new one. We do this just in case there are
|
|
// cascading effects from deleting this pointer that might
|
|
// inadvertently delete the new one. (Don't laugh--it's
|
|
// happened!)
|
|
To *old_ptr = (To *)_void_ptr;
|
|
|
|
_void_ptr = (void *)ptr;
|
|
if (ptr != (To *)NULL) {
|
|
ptr->node_ref();
|
|
#ifdef DO_MEMORY_USAGE
|
|
if (MemoryUsage::get_track_memory_usage()) {
|
|
// Make sure the MemoryUsage record knows what the TypeHandle
|
|
// is, if we know it ourselves.
|
|
TypeHandle type = get_type_handle(To);
|
|
if (type == TypeHandle::none()) {
|
|
do_init_type(To);
|
|
type = get_type_handle(To);
|
|
}
|
|
if (type != TypeHandle::none()) {
|
|
MemoryUsage::update_type(ptr, type);
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
// Now delete the old pointer.
|
|
if (old_ptr != (To *)NULL) {
|
|
node_unref_delete(old_ptr);
|
|
}
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: NodePointerToBase::reassign
|
|
// Access: Protected
|
|
// Description:
|
|
////////////////////////////////////////////////////////////////////
|
|
template<class T>
|
|
INLINE void NodePointerToBase<T>::
|
|
reassign(const NodePointerToBase<To> ©) {
|
|
reassign((To *)copy._void_ptr);
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: NodePointerToBase::clear
|
|
// Access: Published
|
|
// Description: A convenient way to set the NodePointerTo object to NULL.
|
|
// (Assignment to a NULL pointer also works, of course.)
|
|
////////////////////////////////////////////////////////////////////
|
|
template<class T>
|
|
INLINE void NodePointerToBase<T>::
|
|
clear() {
|
|
reassign((To *)NULL);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: NodePointerToBase::output
|
|
// Access: Published
|
|
// Description: A handy function to output NodePointerTo's as a hex
|
|
// pointer followed by a reference count.
|
|
////////////////////////////////////////////////////////////////////
|
|
template<class T>
|
|
INLINE void NodePointerToBase<T>::
|
|
output(ostream &out) const {
|
|
out << _void_ptr;
|
|
if (_void_ptr != (void *)NULL) {
|
|
out << ":" << ((To *)_void_ptr)->get_node_ref_count() << "/"
|
|
<< ((To *)_void_ptr)->get_ref_count();
|
|
}
|
|
}
|