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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_DETAIL_WINDOWS_CONDITION_HPP | |
12 | #define BOOST_INTERPROCESS_DETAIL_WINDOWS_CONDITION_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 | #include <boost/interprocess/detail/posix_time_types_wrk.hpp> | |
25 | ||
26 | #include <boost/interprocess/sync/interprocess_mutex.hpp> | |
27 | #include <boost/interprocess/sync/scoped_lock.hpp> | |
28 | #include <boost/interprocess/exceptions.hpp> | |
29 | #include <boost/interprocess/sync/windows/semaphore.hpp> | |
30 | #include <boost/interprocess/sync/windows/mutex.hpp> | |
31 | #include <boost/interprocess/sync/detail/condition_algorithm_8a.hpp> | |
32 | ||
33 | ||
34 | namespace boost { | |
35 | namespace interprocess { | |
36 | namespace ipcdetail { | |
37 | ||
38 | class windows_condition | |
39 | { | |
40 | windows_condition(const windows_condition &); | |
41 | windows_condition &operator=(const windows_condition &); | |
42 | ||
43 | public: | |
44 | windows_condition() | |
45 | : m_condition_data() | |
46 | {} | |
47 | ||
48 | ~windows_condition() | |
49 | { | |
50 | //Notify all waiting threads | |
51 | //to allow POSIX semantics on condition destruction | |
52 | this->notify_all(); | |
53 | } | |
54 | ||
55 | void notify_one() | |
56 | { m_condition_data.notify_one(); } | |
57 | ||
58 | void notify_all() | |
59 | { m_condition_data.notify_all(); } | |
60 | ||
61 | template <typename L> | |
62 | bool timed_wait(L& lock, const boost::posix_time::ptime &abs_time) | |
63 | { return m_condition_data.timed_wait(lock, abs_time); } | |
64 | ||
65 | template <typename L, typename Pr> | |
66 | bool timed_wait(L& lock, const boost::posix_time::ptime &abs_time, Pr pred) | |
67 | { return m_condition_data.timed_wait(lock, abs_time, pred); } | |
68 | ||
69 | template <typename L> | |
70 | void wait(L& lock) | |
71 | { m_condition_data.wait(lock); } | |
72 | ||
73 | template <typename L, typename Pr> | |
74 | void wait(L& lock, Pr pred) | |
75 | { m_condition_data.wait(lock, pred); } | |
76 | ||
77 | private: | |
78 | ||
79 | struct condition_data | |
80 | { | |
81 | typedef boost::int32_t integer_type; | |
82 | typedef windows_semaphore semaphore_type; | |
83 | typedef windows_mutex mutex_type; | |
84 | ||
85 | condition_data() | |
86 | : m_nwaiters_blocked(0) | |
87 | , m_nwaiters_gone(0) | |
88 | , m_nwaiters_to_unblock(0) | |
89 | , m_sem_block_queue(0) | |
90 | , m_sem_block_lock(1) | |
91 | , m_mtx_unblock_lock() | |
92 | {} | |
93 | ||
94 | integer_type &get_nwaiters_blocked() | |
95 | { return m_nwaiters_blocked; } | |
96 | ||
97 | integer_type &get_nwaiters_gone() | |
98 | { return m_nwaiters_gone; } | |
99 | ||
100 | integer_type &get_nwaiters_to_unblock() | |
101 | { return m_nwaiters_to_unblock; } | |
102 | ||
103 | semaphore_type &get_sem_block_queue() | |
104 | { return m_sem_block_queue; } | |
105 | ||
106 | semaphore_type &get_sem_block_lock() | |
107 | { return m_sem_block_lock; } | |
108 | ||
109 | mutex_type &get_mtx_unblock_lock() | |
110 | { return m_mtx_unblock_lock; } | |
111 | ||
112 | boost::int32_t m_nwaiters_blocked; | |
113 | boost::int32_t m_nwaiters_gone; | |
114 | boost::int32_t m_nwaiters_to_unblock; | |
115 | windows_semaphore m_sem_block_queue; | |
116 | windows_semaphore m_sem_block_lock; | |
117 | windows_mutex m_mtx_unblock_lock; | |
118 | }; | |
119 | ||
120 | ipcdetail::condition_8a_wrapper<condition_data> m_condition_data; | |
121 | }; | |
122 | ||
123 | } //namespace ipcdetail | |
124 | } //namespace interprocess | |
125 | } //namespace boost | |
126 | ||
127 | #include <boost/interprocess/detail/config_end.hpp> | |
128 | ||
129 | #endif //BOOST_INTERPROCESS_DETAIL_WINDOWS_CONDITION_HPP |