60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
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/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file mutexTrueImpl.h
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* @author drose
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* @date 2007-06-19
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*/
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#ifndef MUTEXTRUEIMPL_H
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#define MUTEXTRUEIMPL_H
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#include "pandabase.h"
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#include "mutexImpl.h"
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// The MutexTrueImpl typedef is given here in the pipeline directory, and is
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// used to implement Mutex and ReMutex (and, therefore, any downstream Mutex
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// implementation).
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// This is slightly different from the MutexImpl typedef, which is given up in
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// dtoolbase, and is used standalone anywhere very low-level code needs to
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// protect itself from mutual exclusion.
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// The only difference between the two is in the case of THREAD_SIMPLE_IMPL.
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// In this case, MutexImpl maps to MutexDummyImpl, while MutexTrueImpl maps to
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// MutexSimpleImpl. This distinction is necessary because we cannot define
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// MutexSimpleImpl until we have defined the whole ThreadSimpleManager and
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// related infrastructure.
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#ifdef THREAD_SIMPLE_IMPL
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#include "mutexSimpleImpl.h"
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typedef MutexSimpleImpl MutexTrueImpl;
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#undef HAVE_REMUTEXTRUEIMPL
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#else // THREAD_SIMPLE_IMPL
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typedef MutexImpl MutexTrueImpl;
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#if HAVE_REMUTEXIMPL
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typedef ReMutexImpl ReMutexTrueImpl;
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#define HAVE_REMUTEXTRUEIMPL 1
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#elif MUTEX_SPINLOCK
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// This is defined here because it needs code from pipeline.
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#include "reMutexSpinlockImpl.h"
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typedef ReMutexSpinlockImpl ReMutexTrueImpl;
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#define HAVE_REMUTEXTRUEIMPL 1
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#else
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#undef HAVE_REMUTEXTRUEIMPL
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#endif // HAVE_REMUTEXIMPL
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#endif // THREAD_SIMPLE_IMPL
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#endif
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