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56 lines
1.6 KiB
C++
56 lines
1.6 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of Beast: https://github.com/vinniefalco/Beast
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Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef BEAST_THREADS_TRYLOCKGUARD_H_INCLUDED
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#define BEAST_THREADS_TRYLOCKGUARD_H_INCLUDED
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#include "../Uncopyable.h"
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namespace beast {
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template <typename Mutex>
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class TryLockGuard : public Uncopyable
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{
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public:
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typedef Mutex MutexType;
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explicit TryLockGuard (Mutex const& mutex)
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: m_mutex (mutex)
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, m_owns_lock (m_mutex.try_lock())
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{
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}
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~TryLockGuard ()
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{
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if (m_owns_lock)
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m_mutex.unlock();
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}
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bool owns_lock() const
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{ return m_owns_lock; }
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private:
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Mutex const& m_mutex;
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bool m_owns_lock;
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};
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}
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#endif
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