75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
// Filename: lightMutexDirect.h
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// Created by: drose (08Oct08)
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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) 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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////////////////////////////////////////////////////////////////////
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#ifndef LIGHTMUTEXDIRECT_H
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#define LIGHTMUTEXDIRECT_H
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#include "pandabase.h"
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#include "mutexImpl.h"
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class Thread;
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#ifndef DEBUG_THREADS
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////////////////////////////////////////////////////////////////////
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// Class : LightMutexDirect
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// Description : This class implements a lightweight Mutex by making
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// direct calls to the underlying implementation layer.
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// It doesn't perform any debugging operations.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA_PIPELINE LightMutexDirect {
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protected:
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INLINE LightMutexDirect();
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INLINE ~LightMutexDirect();
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private:
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INLINE LightMutexDirect(const LightMutexDirect ©);
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INLINE void operator = (const LightMutexDirect ©);
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PUBLISHED:
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BLOCKING INLINE void acquire() const;
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INLINE void release() const;
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INLINE bool debug_is_locked() const;
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INLINE void set_name(const string &name);
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INLINE void clear_name();
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INLINE bool has_name() const;
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INLINE string get_name() const;
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void output(ostream &out) const;
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private:
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#ifdef DO_PSTATS
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// When PStats is compiled in, we use the full implementation of
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// LightMutex, even in the SIMPLE_THREADS case. We have to do this
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// since any PStatTimer call may trigger a context switch, and any
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// low-level context switch requires all containing mutexes to be
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// true mutexes.
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MutexTrueImpl _impl;
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#else
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MutexImpl _impl;
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#endif // DO_PSTATS
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};
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INLINE ostream &
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operator << (ostream &out, const LightMutexDirect &m) {
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m.output(out);
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return out;
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}
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#include "lightMutexDirect.I"
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#endif // !DEBUG_THREADS
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#endif
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