199 lines
6.7 KiB
C++
199 lines
6.7 KiB
C++
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//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2005-2012. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/interprocess for documentation.
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//
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//////////////////////////////////////////////////////////////////////////////
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#ifndef BOOST_INTERPROCESS_SHM_NAMED_SEMAPHORE_HPP
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#define BOOST_INTERPROCESS_SHM_NAMED_SEMAPHORE_HPP
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#ifndef BOOST_CONFIG_HPP
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# include <boost/config.hpp>
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#endif
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#
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#if defined(BOOST_HAS_PRAGMA_ONCE)
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# pragma once
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#endif
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#include <boost/interprocess/detail/config_begin.hpp>
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#include <boost/interprocess/detail/workaround.hpp>
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#include <boost/interprocess/creation_tags.hpp>
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#include <boost/interprocess/exceptions.hpp>
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#include <boost/interprocess/permissions.hpp>
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#include <boost/interprocess/detail/interprocess_tester.hpp>
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#include <boost/interprocess/shared_memory_object.hpp>
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#include <boost/interprocess/detail/managed_open_or_create_impl.hpp>
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#include <boost/interprocess/sync/interprocess_semaphore.hpp>
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#include <boost/interprocess/sync/shm/named_creation_functor.hpp>
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namespace boost {
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namespace interprocess {
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namespace ipcdetail {
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class shm_named_semaphore
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{
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#if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
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//Non-copyable
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shm_named_semaphore();
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shm_named_semaphore(const shm_named_semaphore &);
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shm_named_semaphore &operator=(const shm_named_semaphore &);
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#endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
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public:
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shm_named_semaphore(create_only_t, const char *name, unsigned int initialCount, const permissions &perm = permissions());
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shm_named_semaphore(open_or_create_t, const char *name, unsigned int initialCount, const permissions &perm = permissions());
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shm_named_semaphore(open_only_t, const char *name);
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#if defined(BOOST_INTERPROCESS_WCHAR_NAMED_RESOURCES) || defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
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shm_named_semaphore(create_only_t, const wchar_t *name, unsigned int initialCount, const permissions &perm = permissions());
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shm_named_semaphore(open_or_create_t, const wchar_t *name, unsigned int initialCount, const permissions &perm = permissions());
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shm_named_semaphore(open_only_t, const wchar_t *name);
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#endif //defined(BOOST_INTERPROCESS_WCHAR_NAMED_RESOURCES) || defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
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~shm_named_semaphore();
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void post();
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void wait();
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bool try_wait();
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template<class TimePoint> bool timed_wait(const TimePoint &abs_time);
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static bool remove(const char *name);
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#if defined(BOOST_INTERPROCESS_WCHAR_NAMED_RESOURCES) || defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
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static bool remove(const wchar_t *name);
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#endif
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#if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
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private:
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friend class interprocess_tester;
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void dont_close_on_destruction();
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interprocess_semaphore *semaphore() const
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{ return static_cast<interprocess_semaphore*>(m_shmem.get_user_address()); }
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typedef ipcdetail::managed_open_or_create_impl<shared_memory_object, 0, true, false> open_create_impl_t;
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open_create_impl_t m_shmem;
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typedef named_creation_functor<interprocess_semaphore, unsigned> construct_func_t;
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#endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
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};
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inline shm_named_semaphore::~shm_named_semaphore()
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{}
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inline void shm_named_semaphore::dont_close_on_destruction()
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{ interprocess_tester::dont_close_on_destruction(m_shmem); }
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inline shm_named_semaphore::shm_named_semaphore
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(create_only_t, const char *name, unsigned int initialCount, const permissions &perm)
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: m_shmem (create_only
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,name
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,sizeof(interprocess_semaphore) +
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open_create_impl_t::ManagedOpenOrCreateUserOffset
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,read_write
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,0
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,construct_func_t(DoCreate, initialCount)
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,perm)
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{}
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inline shm_named_semaphore::shm_named_semaphore
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(open_or_create_t, const char *name, unsigned int initialCount, const permissions &perm)
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: m_shmem (open_or_create
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,name
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,sizeof(interprocess_semaphore) +
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open_create_impl_t::ManagedOpenOrCreateUserOffset
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,read_write
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,0
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,construct_func_t(DoOpenOrCreate, initialCount)
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,perm)
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{}
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inline shm_named_semaphore::shm_named_semaphore
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(open_only_t, const char *name)
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: m_shmem (open_only
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,name
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,read_write
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,0
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,construct_func_t(DoOpen, 0))
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{}
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#if defined(BOOST_INTERPROCESS_WCHAR_NAMED_RESOURCES) || defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
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inline shm_named_semaphore::shm_named_semaphore
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(create_only_t, const wchar_t *name, unsigned int initialCount, const permissions &perm)
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: m_shmem (create_only
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,name
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,sizeof(interprocess_semaphore) +
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open_create_impl_t::ManagedOpenOrCreateUserOffset
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,read_write
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,0
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,construct_func_t(DoCreate, initialCount)
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,perm)
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{}
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inline shm_named_semaphore::shm_named_semaphore
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(open_or_create_t, const wchar_t *name, unsigned int initialCount, const permissions &perm)
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: m_shmem (open_or_create
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,name
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,sizeof(interprocess_semaphore) +
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open_create_impl_t::ManagedOpenOrCreateUserOffset
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,read_write
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,0
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,construct_func_t(DoOpenOrCreate, initialCount)
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,perm)
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{}
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inline shm_named_semaphore::shm_named_semaphore
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(open_only_t, const wchar_t *name)
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: m_shmem (open_only
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,name
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,read_write
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,0
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,construct_func_t(DoOpen, 0))
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{}
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#endif //defined(BOOST_INTERPROCESS_WCHAR_NAMED_RESOURCES) || defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
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inline void shm_named_semaphore::post()
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{ semaphore()->post(); }
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inline void shm_named_semaphore::wait()
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{ semaphore()->wait(); }
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inline bool shm_named_semaphore::try_wait()
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{ return semaphore()->try_wait(); }
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template<class TimePoint>
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inline bool shm_named_semaphore::timed_wait(const TimePoint &abs_time)
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{ return semaphore()->timed_wait(abs_time); }
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inline bool shm_named_semaphore::remove(const char *name)
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{ return shared_memory_object::remove(name); }
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#if defined(BOOST_INTERPROCESS_WCHAR_NAMED_RESOURCES) || defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
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inline bool shm_named_semaphore::remove(const wchar_t *name)
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{ return shared_memory_object::remove(name); }
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#endif
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} //namespace ipcdetail {
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} //namespace interprocess {
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} //namespace boost {
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#include <boost/interprocess/detail/config_end.hpp>
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#endif //BOOST_INTERPROCESS_SHM_NAMED_SEMAPHORE_HPP
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