boost/interprocess/sync/lock_options.hpp
////////////////////////////////////////////////////////////////////////////// // // (C) Copyright Ion Gaztanaga 2005-2012. 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) // // See http://www.boost.org/libs/interprocess for documentation. // ////////////////////////////////////////////////////////////////////////////// #ifndef BOOST_INTERPROCESS_LOCK_OPTIONS_HPP #define BOOST_INTERPROCESS_LOCK_OPTIONS_HPP #ifndef BOOST_CONFIG_HPP # include <boost/config.hpp> #endif # #if defined(BOOST_HAS_PRAGMA_ONCE) # pragma once #endif #include <boost/interprocess/detail/config_begin.hpp> #include <boost/interprocess/detail/workaround.hpp> //!\file //!Describes the lock options with associated with interprocess_mutex lock constructors. namespace boost { #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED) namespace posix_time { class ptime; } #endif //#if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED) namespace interprocess { //!Type to indicate to a mutex lock constructor that must not lock the mutex. struct defer_lock_type{}; //!Type to indicate to a mutex lock constructor that must try to lock the mutex. struct try_to_lock_type {}; //!Type to indicate to a mutex lock constructor that the mutex is already locked. struct accept_ownership_type{}; //!An object indicating that the locking //!must be deferred. static const defer_lock_type defer_lock = defer_lock_type(); //!An object indicating that a try_lock() //!operation must be executed. static const try_to_lock_type try_to_lock = try_to_lock_type(); //!An object indicating that the ownership of lockable //!object must be accepted by the new owner. static const accept_ownership_type accept_ownership = accept_ownership_type(); } // namespace interprocess { } // namespace boost{ #include <boost/interprocess/detail/config_end.hpp> #endif // BOOST_INTERPROCESS_LOCK_OPTIONS_HPP