50 lines
1.1 KiB
C++
50 lines
1.1 KiB
C++
/**
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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 blockerSimple.h
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* @author drose
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* @date 2007-06-20
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*/
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#ifndef BLOCKERSIMPLE_H
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#define BLOCKERSIMPLE_H
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#include "pandabase.h"
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#include "selectThreadImpl.h"
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#ifdef THREAD_SIMPLE_IMPL
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#include "pnotify.h"
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/**
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* This is a base class for MutexSimpleImpl and ConditionVarSimpleImpl. It
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* represents a synchronization primitive that one or more threads might be
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* blocked on.
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*/
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class EXPCL_PANDA_PIPELINE BlockerSimple {
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protected:
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constexpr BlockerSimple() = default;
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INLINE ~BlockerSimple();
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protected:
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enum Flags {
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// lock_count is only used for mutexes, not condition variables.
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F_lock_count = 0x3fffffff,
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F_has_waiters = 0x40000000,
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};
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unsigned int _flags = 0;
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friend class ThreadSimpleManager;
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};
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#include "blockerSimple.I"
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#endif // THREAD_SIMPLE_IMPL
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#endif
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