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_POSIX_NAMED_MUTEX_HPP
12 #define BOOST_INTERPROCESS_POSIX_NAMED_MUTEX_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/detail/interprocess_tester.hpp>
27 #include <boost/interprocess/permissions.hpp>
28
29 #include <boost/interprocess/sync/posix/named_semaphore.hpp>
30
31 namespace boost {
32 namespace interprocess {
33 namespace ipcdetail {
34
35 class named_condition;
36
37 class posix_named_mutex
38 {
39 #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
40
41 posix_named_mutex();
42 posix_named_mutex(const posix_named_mutex &);
43 posix_named_mutex &operator=(const posix_named_mutex &);
44 friend class named_condition;
45 #endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
46
47 public:
48 posix_named_mutex(create_only_t create_only, const char *name, const permissions &perm = permissions());
49
50 posix_named_mutex(open_or_create_t open_or_create, const char *name, const permissions &perm = permissions());
51
52 posix_named_mutex(open_only_t open_only, const char *name);
53
54 ~posix_named_mutex();
55
56 void unlock();
57 void lock();
58 bool try_lock();
59 bool timed_lock(const boost::posix_time::ptime &abs_time);
60 static bool remove(const char *name);
61
62 #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
63 private:
64 friend class interprocess_tester;
65 void dont_close_on_destruction();
66
67 posix_named_semaphore m_sem;
68 #endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
69 };
70
71 #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
72
posix_named_mutex(create_only_t,const char * name,const permissions & perm)73 inline posix_named_mutex::posix_named_mutex(create_only_t, const char *name, const permissions &perm)
74 : m_sem(create_only, name, 1, perm)
75 {}
76
posix_named_mutex(open_or_create_t,const char * name,const permissions & perm)77 inline posix_named_mutex::posix_named_mutex(open_or_create_t, const char *name, const permissions &perm)
78 : m_sem(open_or_create, name, 1, perm)
79 {}
80
posix_named_mutex(open_only_t,const char * name)81 inline posix_named_mutex::posix_named_mutex(open_only_t, const char *name)
82 : m_sem(open_only, name)
83 {}
84
dont_close_on_destruction()85 inline void posix_named_mutex::dont_close_on_destruction()
86 { interprocess_tester::dont_close_on_destruction(m_sem); }
87
~posix_named_mutex()88 inline posix_named_mutex::~posix_named_mutex()
89 {}
90
lock()91 inline void posix_named_mutex::lock()
92 { m_sem.wait(); }
93
unlock()94 inline void posix_named_mutex::unlock()
95 { m_sem.post(); }
96
try_lock()97 inline bool posix_named_mutex::try_lock()
98 { return m_sem.try_wait(); }
99
timed_lock(const boost::posix_time::ptime & abs_time)100 inline bool posix_named_mutex::timed_lock(const boost::posix_time::ptime &abs_time)
101 { return m_sem.timed_wait(abs_time); }
102
remove(const char * name)103 inline bool posix_named_mutex::remove(const char *name)
104 { return posix_named_semaphore::remove(name); }
105
106 #endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
107
108 } //namespace ipcdetail {
109 } //namespace interprocess {
110 } //namespace boost {
111
112 #include <boost/interprocess/detail/config_end.hpp>
113
114 #endif //BOOST_INTERPROCESS_POSIX_NAMED_MUTEX_HPP
115