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+ //////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2011-2012. Distributed under the Boost
+// Software License, Version 1.0. (See accompanying file
+// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org/libs/interprocess for documentation.
+//
+//////////////////////////////////////////////////////////////////////////////
+
+#ifndef BOOST_INTERPROCESS_WINDOWS_NAMED_CONDITION_HPP
+#define BOOST_INTERPROCESS_WINDOWS_NAMED_CONDITION_HPP
+
+#if (defined _MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif
+
+#include <boost/interprocess/detail/config_begin.hpp>
+#include <boost/interprocess/detail/workaround.hpp>
+#include <boost/interprocess/creation_tags.hpp>
+#include <boost/interprocess/permissions.hpp>
+#include <boost/interprocess/detail/interprocess_tester.hpp>
+#include <boost/interprocess/detail/posix_time_types_wrk.hpp>
+#include <boost/interprocess/sync/windows/named_sync.hpp>
+#include <boost/interprocess/sync/windows/winapi_semaphore_wrapper.hpp>
+#include <boost/interprocess/sync/detail/condition_algorithm_8a.hpp>
+
+namespace boost {
+namespace interprocess {
+namespace ipcdetail {
+
+class windows_named_condition
+{
+ /// @cond
+
+ //Non-copyable
+ windows_named_condition();
+ windows_named_condition(const windows_named_condition &);
+ windows_named_condition &operator=(const windows_named_condition &);
+ /// @endcond
+
+ public:
+ windows_named_condition(create_only_t, const char *name, const permissions &perm = permissions());
+
+ windows_named_condition(open_or_create_t, const char *name, const permissions &perm = permissions());
+
+ windows_named_condition(open_only_t, const char *name);
+
+ ~windows_named_condition();
+
+ //!If there is a thread waiting on *this, change that
+ //!thread's state to ready. Otherwise there is no effect.*/
+ void notify_one();
+
+ //!Change the state of all threads waiting on *this to ready.
+ //!If there are no waiting threads, notify_all() has no effect.
+ void notify_all();
+
+ //!Releases the lock on the named_mutex object associated with lock, blocks
+ //!the current thread of execution until readied by a call to
+ //!this->notify_one() or this->notify_all(), and then reacquires the lock.
+ template <typename L>
+ void wait(L& lock);
+
+ //!The same as:
+ //!while (!pred()) wait(lock)
+ template <typename L, typename Pr>
+ void wait(L& lock, Pr pred);
+
+ //!Releases the lock on the named_mutex object associated with lock, blocks
+ //!the current thread of execution until readied by a call to
+ //!this->notify_one() or this->notify_all(), or until time abs_time is reached,
+ //!and then reacquires the lock.
+ //!Returns: false if time abs_time is reached, otherwise true.
+ template <typename L>
+ bool timed_wait(L& lock, const boost::posix_time::ptime &abs_time);
+
+ //!The same as: while (!pred()) {
+ //! if (!timed_wait(lock, abs_time)) return pred();
+ //! } return true;
+ template <typename L, typename Pr>
+ bool timed_wait(L& lock, const boost::posix_time::ptime &abs_time, Pr pred);
+
+ static bool remove(const char *name);
+
+ /// @cond
+ private:
+ friend class interprocess_tester;
+ void dont_close_on_destruction();
+
+ template <class InterprocessMutex>
+ void do_wait(InterprocessMutex& lock);
+
+ template <class InterprocessMutex>
+ bool do_timed_wait(const boost::posix_time::ptime &abs_time, InterprocessMutex& lock);
+
+ struct condition_data
+ {
+ typedef boost::int32_t integer_type;
+ typedef winapi_semaphore_wrapper semaphore_type;
+ typedef winapi_mutex_wrapper mutex_type;
+
+ integer_type &get_nwaiters_blocked()
+ { return m_nwaiters_blocked; }
+
+ integer_type &get_nwaiters_gone()
+ { return m_nwaiters_gone; }
+
+ integer_type &get_nwaiters_to_unblock()
+ { return m_nwaiters_to_unblock; }
+
+ semaphore_type &get_sem_block_queue()
+ { return m_sem_block_queue; }
+
+ semaphore_type &get_sem_block_lock()
+ { return m_sem_block_lock; }
+
+ mutex_type &get_mtx_unblock_lock()
+ { return m_mtx_unblock_lock; }
+
+ integer_type m_nwaiters_blocked;
+ integer_type m_nwaiters_gone;
+ integer_type m_nwaiters_to_unblock;
+ winapi_semaphore_wrapper m_sem_block_queue;
+ winapi_semaphore_wrapper m_sem_block_lock;
+ winapi_mutex_wrapper m_mtx_unblock_lock;
+ } m_condition_data;
+
+ typedef condition_algorithm_8a<condition_data> algorithm_type;
+
+ class named_cond_callbacks : public windows_named_sync_interface
+ {
+ typedef __int64 sem_count_t;
+ mutable sem_count_t sem_counts [2];
+
+ public:
+ named_cond_callbacks(condition_data &cond_data)
+ : m_condition_data(cond_data)
+ {}
+
+ virtual std::size_t get_data_size() const
+ { return sizeof(sem_counts); }
+
+ virtual const void *buffer_with_final_data_to_file()
+ {
+ sem_counts[0] = m_condition_data.m_sem_block_queue.value();
+ sem_counts[1] = m_condition_data.m_sem_block_lock.value();
+ return &sem_counts;
+ }
+
+ virtual const void *buffer_with_init_data_to_file()
+ {
+ sem_counts[0] = 0;
+ sem_counts[1] = 1;
+ return &sem_counts;
+ }
+
+ virtual void *buffer_to_store_init_data_from_file()
+ { return &sem_counts; }
+
+ virtual bool open(create_enum_t, const char *id_name)
+ {
+ m_condition_data.m_nwaiters_blocked = 0;
+ m_condition_data.m_nwaiters_gone = 0;
+ m_condition_data.m_nwaiters_to_unblock = 0;
+
+ //Now open semaphores and mutex.
+ //Use local variables + swap to guarantee consistent
+ //initialization and cleanup in case any opening fails
+ permissions perm;
+ perm.set_unrestricted();
+ std::string aux_str = "Global\\bipc.cond.";
+ aux_str += id_name;
+ std::size_t pos = aux_str.size();
+
+ //sem_block_queue
+ aux_str += "_bq";
+ winapi_semaphore_wrapper sem_block_queue;
+ bool created;
+ if(!sem_block_queue.open_or_create
+ (aux_str.c_str(), sem_counts[0], winapi_semaphore_wrapper::MaxCount, perm, created))
+ return false;
+ aux_str.erase(pos);
+
+ //sem_block_lock
+ aux_str += "_bl";
+ winapi_semaphore_wrapper sem_block_lock;
+ if(!sem_block_lock.open_or_create
+ (aux_str.c_str(), sem_counts[1], winapi_semaphore_wrapper::MaxCount, perm, created))
+ return false;
+ aux_str.erase(pos);
+
+ //mtx_unblock_lock
+ aux_str += "_ul";
+ winapi_mutex_wrapper mtx_unblock_lock;
+ if(!mtx_unblock_lock.open_or_create(aux_str.c_str(), perm))
+ return false;
+
+ //All ok, commit data
+ m_condition_data.m_sem_block_queue.swap(sem_block_queue);
+ m_condition_data.m_sem_block_lock.swap(sem_block_lock);
+ m_condition_data.m_mtx_unblock_lock.swap(mtx_unblock_lock);
+ return true;
+ }
+
+ virtual void close()
+ {
+ m_condition_data.m_sem_block_queue.close();
+ m_condition_data.m_sem_block_lock.close();
+ m_condition_data.m_mtx_unblock_lock.close();
+ m_condition_data.m_nwaiters_blocked = 0;
+ m_condition_data.m_nwaiters_gone = 0;
+ m_condition_data.m_nwaiters_to_unblock = 0;
+ }
+
+ virtual ~named_cond_callbacks()
+ {}
+
+ private:
+ condition_data &m_condition_data;
+ };
+
+ windows_named_sync m_named_sync;
+ /// @endcond
+};
+
+inline windows_named_condition::~windows_named_condition()
+{
+ named_cond_callbacks callbacks(m_condition_data);
+ m_named_sync.close(callbacks);
+}
+
+inline void windows_named_condition::dont_close_on_destruction()
+{}
+
+inline windows_named_condition::windows_named_condition
+ (create_only_t, const char *name, const permissions &perm)
+ : m_condition_data()
+{
+ named_cond_callbacks callbacks(m_condition_data);
+ m_named_sync.open_or_create(DoCreate, name, perm, callbacks);
+}
+
+inline windows_named_condition::windows_named_condition
+ (open_or_create_t, const char *name, const permissions &perm)
+ : m_condition_data()
+{
+ named_cond_callbacks callbacks(m_condition_data);
+ m_named_sync.open_or_create(DoOpenOrCreate, name, perm, callbacks);
+}
+
+inline windows_named_condition::windows_named_condition(open_only_t, const char *name)
+ : m_condition_data()
+{
+ named_cond_callbacks callbacks(m_condition_data);
+ m_named_sync.open_or_create(DoOpen, name, permissions(), callbacks);
+}
+
+inline void windows_named_condition::notify_one()
+{ algorithm_type::signal(m_condition_data, false); }
+
+inline void windows_named_condition::notify_all()
+{ algorithm_type::signal(m_condition_data, true); }
+
+template<class InterprocessMutex>
+inline void windows_named_condition::do_wait(InterprocessMutex &mut)
+{ algorithm_type::wait(m_condition_data, false, boost::posix_time::ptime(), mut); }
+
+template<class InterprocessMutex>
+inline bool windows_named_condition::do_timed_wait
+ (const boost::posix_time::ptime &abs_time, InterprocessMutex &mut)
+{ return algorithm_type::wait(m_condition_data, true, abs_time, mut); }
+
+template <typename L>
+inline void windows_named_condition::wait(L& lock)
+{
+ if (!lock)
+ throw lock_exception();
+ this->do_wait(*lock.mutex());
+}
+
+template <typename L, typename Pr>
+inline void windows_named_condition::wait(L& lock, Pr pred)
+{
+ if (!lock)
+ throw lock_exception();
+ while (!pred())
+ this->do_wait(*lock.mutex());
+}
+
+template <typename L>
+inline bool windows_named_condition::timed_wait
+ (L& lock, const boost::posix_time::ptime &abs_time)
+{
+ if(abs_time == boost::posix_time::pos_infin){
+ this->wait(lock);
+ return true;
+ }
+ if (!lock)
+ throw lock_exception();
+ return this->do_timed_wait(abs_time, *lock.mutex());
+}
+
+template <typename L, typename Pr>
+inline bool windows_named_condition::timed_wait
+ (L& lock, const boost::posix_time::ptime &abs_time, Pr pred)
+{
+ if(abs_time == boost::posix_time::pos_infin){
+ this->wait(lock, pred);
+ return true;
+ }
+ if (!lock)
+ throw lock_exception();
+
+ while (!pred()){
+ if(!this->do_timed_wait(abs_time, *lock.mutex())){
+ return pred();
+ }
+ }
+ return true;
+}
+
+inline bool windows_named_condition::remove(const char *name)
+{
+ return windows_named_sync::remove(name);
+}
+
+} //namespace ipcdetail {
+} //namespace interprocess {
+} //namespace boost {
+
+#include <boost/interprocess/detail/config_end.hpp>
+
+#endif //BOOST_INTERPROCESS_WINDOWS_NAMED_CONDITION_HPP