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bufferContext.cxx
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60 lines (53 loc) · 1.28 KB
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/**
* 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 bufferContext.cxx
* @author drose
* @date 2006-03-16
*/
#include "bufferContext.h"
TypeHandle BufferContext::_type_handle;
/**
*
*/
BufferContext::
BufferContext(BufferResidencyTracker *residency, TypedWritableReferenceCount *object) :
_object(object),
_residency(residency),
_residency_state(0),
_data_size_bytes(0),
_owning_chain(nullptr)
{
set_owning_chain(&residency->_chains[0]);
}
/**
*
*/
BufferContext::
~BufferContext() {
set_owning_chain(nullptr);
}
/**
* Moves this object to a different BufferContextChain.
*/
void BufferContext::
set_owning_chain(BufferContextChain *chain) {
if (chain != _owning_chain) {
if (_owning_chain != nullptr){
--(_owning_chain->_count);
_owning_chain->adjust_bytes(-(int)_data_size_bytes);
remove_from_list();
}
_owning_chain = chain;
if (_owning_chain != nullptr) {
++(_owning_chain->_count);
_owning_chain->adjust_bytes((int)_data_size_bytes);
insert_before(_owning_chain);
}
}
}