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 //////////////////////////////////////////////////////////////////////////////
 //
 // (C) Copyright Ion Gaztanaga 2005-2012. 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_NAMED_CONDITION_ANY_HPP
 #define BOOST_INTERPROCESS_NAMED_CONDITION_ANY_HPP
 
 #ifndef BOOST_CONFIG_HPP
 #  include <boost/config.hpp>
 #endif
 #
 #if defined(BOOST_HAS_PRAGMA_ONCE)
 #  pragma once
 #endif
 
 #include <boost/interprocess/detail/config_begin.hpp>
 #include <boost/interprocess/detail/workaround.hpp>
 
 #include <boost/interprocess/sync/cv_status.hpp>
 #include <boost/interprocess/creation_tags.hpp>
 #include <boost/interprocess/exceptions.hpp>
 #include <boost/interprocess/timed_utils.hpp>
 #include <boost/interprocess/detail/interprocess_tester.hpp>
 #include <boost/interprocess/permissions.hpp>
 #include <boost/interprocess/sync/detail/locks.hpp>
 #if !defined(BOOST_INTERPROCESS_FORCE_GENERIC_EMULATION) && defined (BOOST_INTERPROCESS_WINDOWS)
    #include <boost/interprocess/sync/windows/named_condition_any.hpp>
    #define BOOST_INTERPROCESS_NAMED_CONDITION_ANY_USE_WINAPI
 #else
    #include <boost/interprocess/sync/shm/named_condition_any.hpp>
 #endif
 
 //!\file
 //!Describes a named condition class for inter-process synchronization
 
 namespace boost {
 namespace interprocess {
 
 #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
 namespace ipcdetail{ class interprocess_tester; }
 #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
 
 //! A global condition variable that can be created by name.
 //! This condition variable is designed to work with named_mutex and
 //! can't be placed in shared memory or memory mapped files.
 class named_condition_any
 {
    #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
    //Non-copyable
    named_condition_any();
    named_condition_any(const named_condition_any &);
    named_condition_any &operator=(const named_condition_any &);
    #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
 
    public:
    //!Creates a global condition with a name.
    //!If the condition can't be created throws interprocess_exception
    named_condition_any(create_only_t, const char *name, const permissions &perm = permissions())
       :  m_cond(create_only_t(), name, perm)
    {}
 
    //!Opens or creates a global condition with a name.
    //!If the condition is created, this call is equivalent to
    //!named_condition_any(create_only_t, ... )
    //!If the condition is already created, this call is equivalent
    //!named_condition_any(open_only_t, ... )
    //!Does not throw
    named_condition_any(open_or_create_t, const char *name, const permissions &perm = permissions())
       :  m_cond(open_or_create_t(), name, perm)
    {}
 
    //!Opens a global condition with a name if that condition is previously
    //!created. If it is not previously created this function throws
    //!interprocess_exception.
    named_condition_any(open_only_t, const char *name)
       :  m_cond(open_only_t(), name)
    {}
 
    #if defined(BOOST_INTERPROCESS_WCHAR_NAMED_RESOURCES) || defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
 
    //!Creates a global condition with a name.
    //!If the condition can't be created throws interprocess_exception
    //! 
    //!Note: This function is only available on operating systems with
    //!      native wchar_t APIs (e.g. Windows).
    named_condition_any(create_only_t, const wchar_t *name, const permissions &perm = permissions())
       :  m_cond(create_only_t(), name, perm)
    {}
 
    //!Opens or creates a global condition with a name.
    //!If the condition is created, this call is equivalent to
    //!named_condition_any(create_only_t, ... )
    //!If the condition is already created, this call is equivalent
    //!named_condition_any(open_only_t, ... )
    //!Does not throw
    //! 
    //!Note: This function is only available on operating systems with
    //!      native wchar_t APIs (e.g. Windows).
    named_condition_any(open_or_create_t, const wchar_t *name, const permissions &perm = permissions())
       :  m_cond(open_or_create_t(), name, perm)
    {}
 
    //!Opens a global condition with a name if that condition is previously
    //!created. If it is not previously created this function throws
    //!interprocess_exception.
    //! 
    //!Note: This function is only available on operating systems with
    //!      native wchar_t APIs (e.g. Windows).
    named_condition_any(open_only_t, const wchar_t *name)
       :  m_cond(open_only_t(), name)
    {}
 
    #endif   //defined(BOOST_INTERPROCESS_WCHAR_NAMED_RESOURCES) || defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
 
    //!Destroys *this and indicates that the calling process is finished using
    //!the resource. The destructor function will deallocate
    //!any system resources allocated by the system for use by this process for
    //!this resource. The resource can still be opened again calling
    //!the open constructor overload. To erase the resource from the system
    //!use remove().
    ~named_condition_any()
    {}
 
    //!If there is a thread waiting on *this, change that
    //!thread's state to ready. Otherwise there is no effect.*/
    void notify_one()
    {  m_cond.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()
    {  m_cond.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)
    {  return m_cond.wait(lock); }
 
    //!The same as:
    //!while (!pred()) wait(lock)
    template <typename L, typename Pr>
    void wait(L& lock, Pr pred)
    {  return m_cond.wait(lock, 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, typename TimePoint>
    bool timed_wait(L& lock, const TimePoint &abs_time)
    {  return m_cond.timed_wait(lock, abs_time); }
 
    //!The same as:   while (!pred()) {
    //!                  if (!timed_wait(lock, abs_time)) return pred();
    //!               } return true;
    template <typename L, typename TimePoint, typename Pr>
    bool timed_wait(L& lock, const TimePoint &abs_time, Pr pred)
    {  return m_cond.timed_wait(lock, abs_time, pred); }
 
    //!Same as `timed_wait`, but this function is modeled after the
    //!standard library interface.
    template <typename L, class TimePoint>
    cv_status wait_until(L& lock, const TimePoint &abs_time)
    {  return this->timed_wait(lock, abs_time) ? cv_status::no_timeout : cv_status::timeout; }
 
    //!Same as `timed_wait`, but this function is modeled after the
    //!standard library interface.
    template <typename L, class TimePoint, typename Pr>
    bool wait_until(L& lock, const TimePoint &abs_time, Pr pred)
    {  return this->timed_wait(lock, abs_time, pred); }
 
    //!Same as `timed_wait`, but this function is modeled after the
    //!standard library interface and uses relative timeouts.
    template <typename L, class Duration>
    cv_status wait_for(L& lock, const Duration &dur)
    {  return this->wait_until(lock, ipcdetail::duration_to_ustime(dur)); }
 
    //!Same as `timed_wait`, but this function is modeled after the
    //!standard library interface and uses relative timeouts
    template <typename L, class Duration, typename Pr>
    bool wait_for(L& lock, const Duration &dur, Pr pred)
    {  return this->wait_until(lock, ipcdetail::duration_to_ustime(dur), pred); }
 
    //!Erases a named condition from the system.
    //!Returns false on error. Never throws.
    static bool remove(const char *name)
    {  return condition_any_type::remove(name);  }
 
    #if defined(BOOST_INTERPROCESS_WCHAR_NAMED_RESOURCES) || defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
 
    //!Erases a named condition from the system.
    //!Returns false on error. Never throws.
    //! 
    //!Note: This function is only available on operating systems with
    //!      native wchar_t APIs (e.g. Windows).
    static bool remove(const wchar_t *name)
    {  return condition_any_type::remove(name);  }
 
    #endif //defined(BOOST_INTERPROCESS_WCHAR_NAMED_RESOURCES) || defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
 
    #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
    private:
    #if defined(BOOST_INTERPROCESS_NAMED_CONDITION_ANY_USE_WINAPI)
    typedef ipcdetail::winapi_named_condition_any   condition_any_type;
    #else
    typedef ipcdetail::shm_named_condition_any       condition_any_type;
    #endif
    condition_any_type m_cond;
 
    friend class ipcdetail::interprocess_tester;
    void dont_close_on_destruction()
    {  ipcdetail::interprocess_tester::dont_close_on_destruction(m_cond); }
    #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
 };
 
 }  //namespace interprocess
 }  //namespace boost
 
 #include <boost/interprocess/detail/config_end.hpp>
 
 #endif // BOOST_INTERPROCESS_NAMED_CONDITION_ANY_HPP

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