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1 | |
2 | // Copyright Oliver Kowalke 2013. | |
3 | // Distributed under the Boost Software License, Version 1.0. | |
4 | // (See accompanying file LICENSE_1_0.txt or copy at | |
5 | // http://www.boost.org/LICENSE_1_0.txt) | |
6 | ||
7 | #ifndef BOOST_FIBERS_TIMED_MUTEX_H | |
8 | #define BOOST_FIBERS_TIMED_MUTEX_H | |
9 | ||
10 | #include <chrono> | |
11 | ||
12 | #include <boost/assert.hpp> | |
13 | #include <boost/config.hpp> | |
14 | ||
15 | #include <boost/fiber/context.hpp> | |
16 | #include <boost/fiber/detail/config.hpp> | |
17 | #include <boost/fiber/detail/convert.hpp> | |
18 | #include <boost/fiber/detail/spinlock.hpp> | |
19 | ||
20 | #ifdef BOOST_HAS_ABI_HEADERS | |
21 | # include BOOST_ABI_PREFIX | |
22 | #endif | |
23 | ||
24 | #ifdef _MSC_VER | |
25 | # pragma warning(push) | |
26 | # pragma warning(disable:4251) | |
27 | #endif | |
28 | ||
29 | namespace boost { | |
30 | namespace fibers { | |
31 | ||
32 | class condition_variable; | |
33 | ||
34 | class BOOST_FIBERS_DECL timed_mutex { | |
35 | private: | |
36 | friend class condition_variable; | |
37 | ||
38 | typedef context::wait_queue_t wait_queue_t; | |
39 | ||
40 | context * owner_{ nullptr }; | |
41 | wait_queue_t wait_queue_{}; | |
42 | detail::spinlock wait_queue_splk_{}; | |
43 | ||
44 | bool try_lock_until_( std::chrono::steady_clock::time_point const& timeout_time) noexcept; | |
45 | ||
46 | public: | |
47 | timed_mutex() = default; | |
48 | ||
49 | ~timed_mutex() { | |
50 | BOOST_ASSERT( nullptr == owner_); | |
51 | BOOST_ASSERT( wait_queue_.empty() ); | |
52 | } | |
53 | ||
54 | timed_mutex( timed_mutex const&) = delete; | |
55 | timed_mutex & operator=( timed_mutex const&) = delete; | |
56 | ||
57 | void lock(); | |
58 | ||
59 | bool try_lock(); | |
60 | ||
61 | template< typename Clock, typename Duration > | |
62 | bool try_lock_until( std::chrono::time_point< Clock, Duration > const& timeout_time_) { | |
63 | std::chrono::steady_clock::time_point timeout_time( | |
64 | detail::convert( timeout_time_) ); | |
65 | return try_lock_until_( timeout_time); | |
66 | } | |
67 | ||
68 | template< typename Rep, typename Period > | |
69 | bool try_lock_for( std::chrono::duration< Rep, Period > const& timeout_duration) { | |
70 | return try_lock_until_( std::chrono::steady_clock::now() + timeout_duration); | |
71 | } | |
72 | ||
73 | void unlock(); | |
74 | }; | |
75 | ||
76 | }} | |
77 | ||
78 | #ifdef _MSC_VER | |
79 | # pragma warning(pop) | |
80 | #endif | |
81 | ||
82 | #ifdef BOOST_HAS_ABI_HEADERS | |
83 | # include BOOST_ABI_SUFFIX | |
84 | #endif | |
85 | ||
86 | #endif // BOOST_FIBERS_TIMED_MUTEX_H |