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1 | ////////////////////////////////////////////////////////////////////////////// |
2 | // | |
3 | // (C) Copyright Ion Gaztanaga 2005-2012. Distributed under the Boost | |
4 | // Software License, Version 1.0. (See accompanying file | |
5 | // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
6 | // | |
7 | // See http://www.boost.org/libs/interprocess for documentation. | |
8 | // | |
9 | ////////////////////////////////////////////////////////////////////////////// | |
10 | ||
11 | #ifndef BOOST_INTERPROCESS_LOCK_OPTIONS_HPP | |
12 | #define BOOST_INTERPROCESS_LOCK_OPTIONS_HPP | |
13 | ||
14 | #ifndef BOOST_CONFIG_HPP | |
15 | # include <boost/config.hpp> | |
16 | #endif | |
17 | # | |
18 | #if defined(BOOST_HAS_PRAGMA_ONCE) | |
19 | # pragma once | |
20 | #endif | |
21 | ||
22 | #include <boost/interprocess/detail/config_begin.hpp> | |
23 | #include <boost/interprocess/detail/workaround.hpp> | |
24 | ||
25 | //!\file | |
26 | //!Describes the lock options with associated with interprocess_mutex lock constructors. | |
27 | ||
28 | namespace boost { | |
7c673cae FG |
29 | namespace interprocess { |
30 | ||
31 | //!Type to indicate to a mutex lock constructor that must not lock the mutex. | |
32 | struct defer_lock_type{}; | |
33 | //!Type to indicate to a mutex lock constructor that must try to lock the mutex. | |
34 | struct try_to_lock_type {}; | |
35 | //!Type to indicate to a mutex lock constructor that the mutex is already locked. | |
36 | struct accept_ownership_type{}; | |
37 | ||
38 | //!An object indicating that the locking | |
39 | //!must be deferred. | |
40 | static const defer_lock_type defer_lock = defer_lock_type(); | |
41 | ||
42 | //!An object indicating that a try_lock() | |
43 | //!operation must be executed. | |
44 | static const try_to_lock_type try_to_lock = try_to_lock_type(); | |
45 | ||
46 | //!An object indicating that the ownership of lockable | |
47 | //!object must be accepted by the new owner. | |
48 | static const accept_ownership_type accept_ownership = accept_ownership_type(); | |
49 | ||
50 | } // namespace interprocess { | |
51 | } // namespace boost{ | |
52 | ||
53 | #include <boost/interprocess/detail/config_end.hpp> | |
54 | ||
55 | #endif // BOOST_INTERPROCESS_LOCK_OPTIONS_HPP |