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PATH: opt / cpanel / ea-ruby27 / src / passenger-release-6.1.2 / src / cxx_supportlib / vendor-modified / boost / thread

//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Vicente J. Botet Escriba 2008-2009,2012. 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/thread for documentation.
//
//////////////////////////////////////////////////////////////////////////////

#ifndef BOOST_THREAD_NULL_MUTEX_HPP
#define BOOST_THREAD_NULL_MUTEX_HPP

#include <boost/thread/detail/config.hpp>
#include <boost/thread/detail/delete.hpp>
#include <boost/chrono/chrono.hpp>

/// \file
/// Describes null_mutex class

namespace boost
{

/// Implements a mutex that simulates a mutex without doing any operation and
  /// simulates a successful operation.
  class null_mutex
  {
  public:

BOOST_THREAD_NO_COPYABLE( null_mutex) /*< no copyable >*/

null_mutex() {}

/// Simulates a mutex lock() operation. Empty function.
    void lock()
    {
    }

/// Simulates a mutex try_lock() operation.
    /// Equivalent to "return true;"
    bool try_lock()
    {
      return true;
    }

/// Simulates a mutex unlock() operation.
    /// Empty function.
    void unlock()
    {
    }

#ifdef BOOST_THREAD_USES_CHRONO
    /// Simulates a mutex try_lock_until() operation.
    /// Equivalent to "return true;"
    template <typename Clock, typename Duration>
    bool try_lock_until(chrono::time_point<Clock, Duration> const &)
    {
      return true;
    }

/// Simulates a mutex try_lock_for() operation.
    /// Equivalent to "return true;"
    template <typename Rep, typename Period>
    bool try_lock_for(chrono::duration<Rep, Period> const &)
    {
      return true;
    }
#endif

/// Simulates a mutex lock_shared() operation.
    /// Empty function.
    void lock_shared()
    {
    }

/// Simulates a mutex try_lock_shared() operation.
    /// Equivalent to "return true;"
    bool try_lock_shared()
    {
      return true;
    }

/// Simulates a mutex unlock_shared() operation.
    /// Empty function.
    void unlock_shared()
    {
    }

/// Simulates a mutex try_lock_shared_until() operation.
    /// Equivalent to "return true;"
    template <typename Clock, typename Duration>
    bool try_lock_shared_until(chrono::time_point<Clock, Duration> const &)
    {
      return true;
    }
    /// Simulates a mutex try_lock_shared_for() operation.
    /// Equivalent to "return true;"
    template <typename Rep, typename Period>
    bool try_lock_shared_for(chrono::duration<Rep, Period> const &)
    {
      return true;
    }

/// Simulates a mutex lock_upgrade() operation.
    /// Empty function.
    void lock_upgrade()
    {
    }

/// Simulates a mutex try_lock_upgrade() operation.
    /// Equivalent to "return true;"
    bool try_lock_upgrade()
    {
      return true;
    }

/// Simulates a mutex unlock_upgrade() operation.
    /// Empty function.
    void unlock_upgrade()
    {
    }

/// Simulates a mutex try_lock_upgrade_until() operation.
    /// Equivalent to "return true;"
    template <typename Clock, typename Duration>
    bool try_lock_upgrade_until(chrono::time_point<Clock, Duration> const &)
    {
      return true;
    }

/// Simulates a mutex try_lock_upgrade_for() operation.
    /// Equivalent to "return true;"
    template <typename Rep, typename Period>
    bool try_lock_upgrade_for(chrono::duration<Rep, Period> const &)
    {
      return true;
    }

/// Simulates a mutex try_unlock_shared_and_lock() operation.
    /// Equivalent to "return true;"
    bool try_unlock_shared_and_lock()
    {
      return true;
    }

#ifdef BOOST_THREAD_USES_CHRONO
    /// Simulates a mutex try_unlock_shared_and_lock_until() operation.
    /// Equivalent to "return true;"
    template <typename Clock, typename Duration>
    bool try_unlock_shared_and_lock_until(chrono::time_point<Clock, Duration> const &)
    {
      return true;
    }

/// Simulates a mutex try_unlock_shared_and_lock_for() operation.
    /// Equivalent to "return true;"
    template <typename Rep, typename Period>
    bool try_unlock_shared_and_lock_for(chrono::duration<Rep, Period> const &)
    {
      return true;
    }
#endif

/// Simulates unlock_and_lock_shared().
    /// Empty function.
    void unlock_and_lock_shared()
    {
    }

/// Simulates a mutex try_unlock_shared_and_lock_upgrade() operation.
    /// Equivalent to "return true;"
    bool try_unlock_shared_and_lock_upgrade()
    {
      return true;
    }

#ifdef BOOST_THREAD_USES_CHRONO
    /// Simulates a mutex try_unlock_shared_and_lock_upgrade_until() operation.
    /// Equivalent to "return true;"
    template <typename Clock, typename Duration>
    bool try_unlock_shared_and_lock_upgrade_until(chrono::time_point<Clock, Duration> const &)
    {
      return true;
    }

/// Simulates a mutex try_unlock_shared_and_lock_upgrade_for() operation.
    /// Equivalent to "return true;"
    template <typename Rep, typename Period>
    bool try_unlock_shared_and_lock_upgrade_for(chrono::duration<Rep, Period> const &)
    {
      return true;
    }
#endif

/// Simulates unlock_and_lock_upgrade().
    /// Empty function.
    void unlock_and_lock_upgrade()
    {
    }

/// Simulates unlock_upgrade_and_lock().
    /// Empty function.
    void unlock_upgrade_and_lock()
    {
    }

/// Simulates a mutex try_unlock_upgrade_and_lock() operation.
    /// Equivalent to "return true;"
    bool try_unlock_upgrade_and_lock()
    {
      return true;
    }

#ifdef BOOST_THREAD_USES_CHRONO
    /// Simulates a mutex try_unlock_upgrade_and_lock_until() operation.
    /// Equivalent to "return true;"
    template <typename Clock, typename Duration>
    bool try_unlock_upgrade_and_lock_until(chrono::time_point<Clock, Duration> const &)
    {
      return true;
    }

/// Simulates a mutex try_unlock_upgrade_and_lock_for() operation.
    /// Equivalent to "return true;"
    template <typename Rep, typename Period>
    bool try_unlock_upgrade_and_lock_for(chrono::duration<Rep, Period> const &)
    {
      return true;
    }
#endif

/// Simulates unlock_upgrade_and_lock_shared().
    /// Empty function.
    void unlock_upgrade_and_lock_shared()
    {
    }

};

} //namespace boost {

#endif

[-] caller_context.hpp [edit]
[-] thread_time.hpp [edit]
[-] thread_guard.hpp [edit]
[+] csbl
[-] scoped_thread.hpp [edit]
[+] concurrent_queues
[-] with_lock_guard.hpp [edit]
[-] ostream_buffer.hpp [edit]
[-] testable_mutex.hpp [edit]
[-] lockable_traits.hpp [edit]
[-] externally_locked.hpp [edit]
[+] v2
[-] lock_concepts.hpp [edit]
[-] thread.hpp [edit]
[-] is_locked_by_this_thread.hpp [edit]
[-] locks.hpp [edit]
[-] latch.hpp [edit]
[-] barrier.hpp [edit]
[-] condition.hpp [edit]
[-] thread_pool.hpp [edit]
[-] shared_lock_guard.hpp [edit]
[-] cv_status.hpp [edit]
[+] ..
[-] condition_variable.hpp [edit]
[-] thread_only.hpp [edit]
[-] exceptions.hpp [edit]
[+] executors
[-] sync_bounded_queue.hpp [edit]
[-] poly_lockable.hpp [edit]
[-] lock_guard.hpp [edit]
[+] experimental
[-] future.hpp [edit]
[-] lock_types.hpp [edit]
[+] futures
[-] sync_queue.hpp [edit]
[-] exceptional_ptr.hpp [edit]
[-] lock_traits.hpp [edit]
[-] mutex.hpp [edit]
[-] lock_options.hpp [edit]
[-] poly_lockable_adapter.hpp [edit]
[-] poly_shared_lockable.hpp [edit]
[-] interruption.hpp [edit]
[-] poly_shared_lockable_adapter.hpp [edit]
[-] synchronized_value.hpp [edit]
[-] executor.hpp [edit]
[-] completion_latch.hpp [edit]
[-] lock_algorithms.hpp [edit]
[-] tss.hpp [edit]
[+] detail
[+] pthread
[-] recursive_mutex.hpp [edit]
[-] lock_factories.hpp [edit]
[-] user_scheduler.hpp [edit]
[-] null_mutex.hpp [edit]
[-] lockable_adapter.hpp [edit]
[-] strict_lock.hpp [edit]
[-] lockable_concepts.hpp [edit]
[-] reverse_lock.hpp [edit]
[-] shared_mutex.hpp [edit]
[-] xtime.hpp [edit]
[-] externally_locked_stream.hpp [edit]
[-] once.hpp [edit]
[-] thread_functors.hpp [edit]