//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2011-2012. 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_WINDOWS_NAMED_CONDITION_ANY_HPP
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#define BOOST_INTERPROCESS_WINDOWS_NAMED_CONDITION_ANY_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/permissions.hpp>
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#include <boost/interprocess/detail/interprocess_tester.hpp>
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#include <boost/interprocess/detail/posix_time_types_wrk.hpp>
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#include <boost/interprocess/sync/windows/named_sync.hpp>
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#include <boost/interprocess/sync/windows/winapi_semaphore_wrapper.hpp>
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#include <boost/interprocess/sync/detail/condition_algorithm_8a.hpp>
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namespace boost {
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namespace interprocess {
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namespace ipcdetail {
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class windows_named_condition_any
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{
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#if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
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//Non-copyable
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windows_named_condition_any();
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windows_named_condition_any(const windows_named_condition_any &);
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windows_named_condition_any &operator=(const windows_named_condition_any &);
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#endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
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public:
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windows_named_condition_any
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(create_only_t, const char *name, const permissions &perm)
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: m_condition_data()
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{
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named_cond_callbacks callbacks(m_condition_data.get_members());
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m_named_sync.open_or_create(DoCreate, name, perm, callbacks);
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}
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windows_named_condition_any
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(open_or_create_t, const char *name, const permissions &perm)
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: m_condition_data()
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{
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named_cond_callbacks callbacks(m_condition_data.get_members());
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m_named_sync.open_or_create(DoOpenOrCreate, name, perm, callbacks);
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}
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windows_named_condition_any(open_only_t, const char *name)
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: m_condition_data()
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{
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named_cond_callbacks callbacks(m_condition_data.get_members());
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m_named_sync.open_or_create(DoOpen, name, permissions(), callbacks);
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}
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~windows_named_condition_any()
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{
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named_cond_callbacks callbacks(m_condition_data.get_members());
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m_named_sync.close(callbacks);
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}
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void notify_one()
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{ m_condition_data.notify_one(); }
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void notify_all()
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{ m_condition_data.notify_all(); }
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template <typename L>
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bool timed_wait(L& lock, const boost::posix_time::ptime &abs_time)
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{ return m_condition_data.timed_wait(lock, abs_time); }
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template <typename L, typename Pr>
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bool timed_wait(L& lock, const boost::posix_time::ptime &abs_time, Pr pred)
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{ return m_condition_data.timed_wait(lock, abs_time, pred); }
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template <typename L>
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void wait(L& lock)
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{ m_condition_data.wait(lock); }
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template <typename L, typename Pr>
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void wait(L& lock, Pr pred)
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{ m_condition_data.wait(lock, pred); }
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static bool remove(const char *name)
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{ return windows_named_sync::remove(name); }
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#if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
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private:
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void dont_close_on_destruction()
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{}
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friend class interprocess_tester;
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struct condition_data
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{
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typedef boost::int32_t integer_type;
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typedef winapi_semaphore_wrapper semaphore_type;
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typedef winapi_mutex_wrapper mutex_type;
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integer_type &get_nwaiters_blocked()
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{ return m_nwaiters_blocked; }
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integer_type &get_nwaiters_gone()
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{ return m_nwaiters_gone; }
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integer_type &get_nwaiters_to_unblock()
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{ return m_nwaiters_to_unblock; }
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semaphore_type &get_sem_block_queue()
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{ return m_sem_block_queue; }
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semaphore_type &get_sem_block_lock()
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{ return m_sem_block_lock; }
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mutex_type &get_mtx_unblock_lock()
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{ return m_mtx_unblock_lock; }
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integer_type m_nwaiters_blocked;
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integer_type m_nwaiters_gone;
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integer_type m_nwaiters_to_unblock;
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winapi_semaphore_wrapper m_sem_block_queue;
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winapi_semaphore_wrapper m_sem_block_lock;
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winapi_mutex_wrapper m_mtx_unblock_lock;
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};
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class named_cond_callbacks : public windows_named_sync_interface
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{
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typedef __int64 sem_count_t;
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mutable sem_count_t sem_counts [2];
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public:
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named_cond_callbacks(condition_data &cond_data)
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: m_condition_data(cond_data)
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{}
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virtual std::size_t get_data_size() const
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{ return sizeof(sem_counts); }
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virtual const void *buffer_with_final_data_to_file()
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{
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sem_counts[0] = m_condition_data.m_sem_block_queue.value();
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sem_counts[1] = m_condition_data.m_sem_block_lock.value();
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return &sem_counts;
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}
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virtual const void *buffer_with_init_data_to_file()
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{
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sem_counts[0] = 0;
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sem_counts[1] = 1;
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return &sem_counts;
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}
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virtual void *buffer_to_store_init_data_from_file()
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{ return &sem_counts; }
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virtual bool open(create_enum_t, const char *id_name)
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{
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m_condition_data.m_nwaiters_blocked = 0;
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m_condition_data.m_nwaiters_gone = 0;
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m_condition_data.m_nwaiters_to_unblock = 0;
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//Now open semaphores and mutex.
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//Use local variables + swap to guarantee consistent
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//initialization and cleanup in case any opening fails
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permissions perm;
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perm.set_unrestricted();
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std::string aux_str = "Global\\bipc.cond.";
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aux_str += id_name;
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std::size_t pos = aux_str.size();
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//sem_block_queue
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aux_str += "_bq";
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winapi_semaphore_wrapper sem_block_queue;
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bool created;
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if(!sem_block_queue.open_or_create
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(aux_str.c_str(), sem_counts[0], winapi_semaphore_wrapper::MaxCount, perm, created))
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return false;
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aux_str.erase(pos);
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//sem_block_lock
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aux_str += "_bl";
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winapi_semaphore_wrapper sem_block_lock;
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if(!sem_block_lock.open_or_create
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(aux_str.c_str(), sem_counts[1], winapi_semaphore_wrapper::MaxCount, perm, created))
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return false;
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aux_str.erase(pos);
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//mtx_unblock_lock
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aux_str += "_ul";
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winapi_mutex_wrapper mtx_unblock_lock;
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if(!mtx_unblock_lock.open_or_create(aux_str.c_str(), perm))
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return false;
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//All ok, commit data
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m_condition_data.m_sem_block_queue.swap(sem_block_queue);
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m_condition_data.m_sem_block_lock.swap(sem_block_lock);
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m_condition_data.m_mtx_unblock_lock.swap(mtx_unblock_lock);
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return true;
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}
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virtual void close()
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{
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m_condition_data.m_sem_block_queue.close();
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m_condition_data.m_sem_block_lock.close();
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m_condition_data.m_mtx_unblock_lock.close();
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m_condition_data.m_nwaiters_blocked = 0;
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m_condition_data.m_nwaiters_gone = 0;
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m_condition_data.m_nwaiters_to_unblock = 0;
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}
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virtual ~named_cond_callbacks()
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{}
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private:
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condition_data &m_condition_data;
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};
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windows_named_sync m_named_sync;
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ipcdetail::condition_8a_wrapper<condition_data> m_condition_data;
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#endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
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};
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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_WINDOWS_NAMED_CONDITION_ANY_HPP
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