70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
// Filename: cycleDataWriter.h
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// Created by: drose (21Feb02)
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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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#ifndef CYCLEDATAWRITER_H
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#define CYCLEDATAWRITER_H
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#include "pandabase.h"
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#include "cycleData.h"
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#include "pipelineCycler.h"
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////////////////////////////////////////////////////////////////////
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// Class : CycleDataWriter
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// Description : This template class calls PipelineCycler::write() in
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// the constructor and PipelineCycler::release_write() in
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// the destructor. In the interim, it provides a
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// transparent read-write access to the CycleData.
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//
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// It exists as a syntactic convenience to access the
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// data in the CycleData. It also allows the whole
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// system to compile down to nothing if
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// SUPPORT_PIPELINING is not defined.
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////////////////////////////////////////////////////////////////////
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template<class CycleDataType>
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class CycleDataWriter {
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public:
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INLINE CycleDataWriter(PipelineCycler<CycleDataType> &cycler);
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INLINE CycleDataWriter(const CycleDataWriter<CycleDataType> ©);
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INLINE void operator = (const CycleDataWriter<CycleDataType> ©);
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INLINE CycleDataWriter(PipelineCycler<CycleDataType> &cycler, CycleDataWriter<CycleDataType> &take_from);
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INLINE CycleDataWriter(PipelineCycler<CycleDataType> &cycler, CycleDataReader<CycleDataType> &take_from);
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INLINE ~CycleDataWriter();
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INLINE CycleDataType *operator -> ();
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INLINE const CycleDataType *operator -> () const;
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INLINE operator CycleDataType * ();
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private:
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#ifdef DO_PIPELINING
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// This is the data stored for a real pipelining implementation.
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PipelineCycler<CycleDataType> *_cycler;
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CycleDataType *_pointer;
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#else // !DO_PIPELINING
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// This is all we need for the trivial, do-nothing implementation.
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CycleDataType *_pointer;
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#endif // DO_PIPELINING
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};
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#include "cycleDataWriter.I"
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#endif
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