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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_SHM_NAMED_SEMAPHORE_HPP | |
12 | #define BOOST_INTERPROCESS_SHM_NAMED_SEMAPHORE_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/creation_tags.hpp> | |
25 | #include <boost/interprocess/exceptions.hpp> | |
26 | #include <boost/interprocess/permissions.hpp> | |
27 | #include <boost/interprocess/detail/interprocess_tester.hpp> | |
28 | #include <boost/interprocess/detail/posix_time_types_wrk.hpp> | |
29 | #include <boost/interprocess/shared_memory_object.hpp> | |
30 | #include <boost/interprocess/detail/managed_open_or_create_impl.hpp> | |
31 | #include <boost/interprocess/sync/interprocess_semaphore.hpp> | |
32 | #include <boost/interprocess/sync/shm/named_creation_functor.hpp> | |
33 | ||
34 | namespace boost { | |
35 | namespace interprocess { | |
36 | namespace ipcdetail { | |
37 | ||
38 | class shm_named_semaphore | |
39 | { | |
40 | #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED) | |
41 | ||
42 | //Non-copyable | |
43 | shm_named_semaphore(); | |
44 | shm_named_semaphore(const shm_named_semaphore &); | |
45 | shm_named_semaphore &operator=(const shm_named_semaphore &); | |
46 | #endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED | |
47 | ||
48 | public: | |
49 | shm_named_semaphore(create_only_t, const char *name, unsigned int initialCount, const permissions &perm = permissions()); | |
50 | ||
51 | shm_named_semaphore(open_or_create_t, const char *name, unsigned int initialCount, const permissions &perm = permissions()); | |
52 | ||
53 | shm_named_semaphore(open_only_t, const char *name); | |
54 | ||
55 | ~shm_named_semaphore(); | |
56 | ||
57 | void post(); | |
58 | void wait(); | |
59 | bool try_wait(); | |
60 | bool timed_wait(const boost::posix_time::ptime &abs_time); | |
61 | ||
62 | static bool remove(const char *name); | |
63 | ||
64 | #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED) | |
65 | private: | |
66 | friend class interprocess_tester; | |
67 | void dont_close_on_destruction(); | |
68 | ||
69 | interprocess_semaphore *semaphore() const | |
70 | { return static_cast<interprocess_semaphore*>(m_shmem.get_user_address()); } | |
71 | ||
72 | typedef ipcdetail::managed_open_or_create_impl<shared_memory_object, 0, true, false> open_create_impl_t; | |
73 | open_create_impl_t m_shmem; | |
74 | typedef named_creation_functor<interprocess_semaphore, int> construct_func_t; | |
75 | #endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED | |
76 | }; | |
77 | ||
78 | inline shm_named_semaphore::~shm_named_semaphore() | |
79 | {} | |
80 | ||
81 | inline void shm_named_semaphore::dont_close_on_destruction() | |
82 | { interprocess_tester::dont_close_on_destruction(m_shmem); } | |
83 | ||
84 | inline shm_named_semaphore::shm_named_semaphore | |
85 | (create_only_t, const char *name, unsigned int initialCount, const permissions &perm) | |
86 | : m_shmem (create_only | |
87 | ,name | |
88 | ,sizeof(interprocess_semaphore) + | |
89 | open_create_impl_t::ManagedOpenOrCreateUserOffset | |
90 | ,read_write | |
91 | ,0 | |
92 | ,construct_func_t(DoCreate, initialCount) | |
93 | ,perm) | |
94 | {} | |
95 | ||
96 | inline shm_named_semaphore::shm_named_semaphore | |
97 | (open_or_create_t, const char *name, unsigned int initialCount, const permissions &perm) | |
98 | : m_shmem (open_or_create | |
99 | ,name | |
100 | ,sizeof(interprocess_semaphore) + | |
101 | open_create_impl_t::ManagedOpenOrCreateUserOffset | |
102 | ,read_write | |
103 | ,0 | |
104 | ,construct_func_t(DoOpenOrCreate, initialCount) | |
105 | ,perm) | |
106 | {} | |
107 | ||
108 | inline shm_named_semaphore::shm_named_semaphore | |
109 | (open_only_t, const char *name) | |
110 | : m_shmem (open_only | |
111 | ,name | |
112 | ,read_write | |
113 | ,0 | |
114 | ,construct_func_t(DoOpen, 0)) | |
115 | {} | |
116 | ||
117 | inline void shm_named_semaphore::post() | |
118 | { semaphore()->post(); } | |
119 | ||
120 | inline void shm_named_semaphore::wait() | |
121 | { semaphore()->wait(); } | |
122 | ||
123 | inline bool shm_named_semaphore::try_wait() | |
124 | { return semaphore()->try_wait(); } | |
125 | ||
126 | inline bool shm_named_semaphore::timed_wait(const boost::posix_time::ptime &abs_time) | |
127 | { return semaphore()->timed_wait(abs_time); } | |
128 | ||
129 | inline bool shm_named_semaphore::remove(const char *name) | |
130 | { return shared_memory_object::remove(name); } | |
131 | ||
132 | } //namespace ipcdetail { | |
133 | } //namespace interprocess { | |
134 | } //namespace boost { | |
135 | ||
136 | #include <boost/interprocess/detail/config_end.hpp> | |
137 | ||
138 | #endif //BOOST_INTERPROCESS_SHM_NAMED_SEMAPHORE_HPP |