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[/
(C) Copyright 2007-8 Anthony Williams.
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE_1_0.txt or copy at
http://www.boost.org/LICENSE_1_0.txt).
]
[section:shared_mutex Class `shared_mutex`]
#include <boost/thread/shared_mutex.hpp>
class shared_mutex
{
public:
shared_mutex();
~shared_mutex();
void lock_shared();
bool try_lock_shared();
bool timed_lock_shared(system_time const& timeout);
void unlock_shared();
void lock();
bool try_lock();
bool timed_lock(system_time const& timeout);
void unlock();
void lock_upgrade();
void unlock_upgrade();
void unlock_upgrade_and_lock();
void unlock_and_lock_upgrade();
void unlock_and_lock_shared();
void unlock_upgrade_and_lock_shared();
};
The class `boost::shared_mutex` provides an implementation of a multiple-reader / single-writer mutex. It implements the
__upgrade_lockable_concept__.
Multiple concurrent calls to __lock_ref__, __try_lock_ref__, __timed_lock_ref__, __lock_shared_ref__, __try_lock_shared_ref__ and
__timed_lock_shared_ref__ shall be permitted.
[endsect]
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