64 lines
2.2 KiB
C++
Executable File
64 lines
2.2 KiB
C++
Executable File
// Filename: bufferContextChain.cxx
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// Created by: drose (16Mar06)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
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//
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// All use of this software is subject to the terms of the Panda 3d
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// Software license. You should have received a copy of this license
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// along with this source code; you will also find a current copy of
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// the license at http://etc.cmu.edu/panda3d/docs/license/ .
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//
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// To contact the maintainers of this program write to
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// panda3d-general@lists.sourceforge.net .
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//
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////////////////////////////////////////////////////////////////////
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#include "bufferContextChain.h"
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#include "bufferContext.h"
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////////////////////////////////////////////////////////////////////
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// Function: BufferContextChain::get_first
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// Access: Public
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// Description: Returns the first BufferContext object stored in the
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// tracker. You can walk through the entire list of
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// objects stored on the tracker by calling get_next()
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// on each returned object, until the return value is
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// NULL.
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////////////////////////////////////////////////////////////////////
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BufferContext *BufferContextChain::
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get_first() {
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// This method is declared non-inline so we can include
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// bufferContext.h, which is necessary for proper downcasting of the
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// _next pointer.
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if (_next == this) {
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return NULL;
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}
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return (BufferContext *)_next;
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}
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////////////////////////////////////////////////////////////////////
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// Function: BufferContextChain::take_from
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// Access: Public
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// Description: Moves all of the BufferContexts from the other
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// tracker onto this one.
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////////////////////////////////////////////////////////////////////
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void BufferContextChain::
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take_from(BufferContextChain &other) {
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_total_size += other._total_size;
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_count += other._count;
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other._total_size = 0;
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other._count = 0;
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LinkedListNode *llnode = other._next;
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while (llnode != &other) {
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nassertv(((BufferContext *)llnode)->_owning_chain == &other);
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((BufferContext *)llnode)->_owning_chain = this;
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llnode = ((BufferContext *)llnode)->_next;
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}
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take_list_from(&other);
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}
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