58 lines
1.4 KiB
C++
58 lines
1.4 KiB
C++
// Filename: mutexLinuxImpl.h
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// Created by: drose (28Mar06)
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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 MUTEXLINUXIMPL_H
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#define MUTEXLINUXIMPL_H
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#include "dtoolbase.h"
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#include "selectThreadImpl.h"
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#ifdef HAVE_LINUX_NATIVE_THREADS
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#include "numeric_types.h"
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////////////////////////////////////////////////////////////////////
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// Class : MutexLinuxImpl
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// Description : Uses Linux threads to implement a mutex.
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////////////////////////////////////////////////////////////////////
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class EXPCL_DTOOL MutexLinuxImpl {
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public:
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INLINE MutexLinuxImpl();
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INLINE ~MutexLinuxImpl();
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void lock();
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INLINE bool try_lock();
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void release();
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private:
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enum Mode {
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M_unlocked = 0,
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M_locked_no_waiters = 1,
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M_locked_with_waiters = 2,
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};
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PN_int32 _mode;
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friend class ConditionVarLinuxImpl;
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};
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#include "mutexLinuxImpl.I"
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#endif // HAVE_LINUX_NATIVE_THREADS
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#endif
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