comparison DEPENDENCIES/generic/include/boost/thread/sync_queue.hpp @ 16:2665513ce2d3

Add boost headers

+#ifndef BOOST_THREAD_SYNC_QUEUE_HPP
+#define BOOST_THREAD_SYNC_QUEUE_HPP
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Vicente J. Botet Escriba 2013. 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.
+//
+//////////////////////////////////////////////////////////////////////////////
+
+#include <boost/thread/detail/config.hpp>
+#include <boost/thread/condition_variable.hpp>
+#include <boost/thread/mutex.hpp>
+#include <boost/thread/detail/move.hpp>
+#include <boost/throw_exception.hpp>
+#include <boost/smart_ptr/shared_ptr.hpp>
+#include <boost/smart_ptr/make_shared.hpp>
+
+#include <boost/thread/sync_bounded_queue.hpp>
+#include <boost/container/deque.hpp>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+
+
+  template <typename ValueType>
+  class sync_queue
+  {
+  public:
+    typedef ValueType value_type;
+    typedef std::size_t size_type;
+
+    // Constructors/Assignment/Destructors
+    BOOST_THREAD_NO_COPYABLE(sync_queue)
+    inline sync_queue();
+    //template <typename Range>
+    //inline explicit sync_queue(Range range);
+    inline ~sync_queue();
+
+    // Observers
+    inline bool empty() const;
+    inline bool full() const;
+    inline size_type size() const;
+    inline bool closed() const;
+
+    // Modifiers
+    inline void close();
+
+    inline void push(const value_type& x);
+    inline void push(BOOST_THREAD_RV_REF(value_type) x);
+    inline bool try_push(const value_type& x);
+    inline bool try_push(BOOST_THREAD_RV_REF(value_type) x);
+    inline bool try_push(no_block_tag, const value_type& x);
+    inline bool try_push(no_block_tag, BOOST_THREAD_RV_REF(value_type) x);
+
+    // Observers/Modifiers
+    inline void pull(value_type&);
+    inline void pull(ValueType& elem, bool & closed);
+    // enable_if is_nothrow_copy_movable<value_type>
+    inline value_type pull();
+    inline shared_ptr<ValueType> ptr_pull();
+    inline bool try_pull(value_type&);
+    inline bool try_pull(no_block_tag,value_type&);
+    inline shared_ptr<ValueType> try_pull();
+
+  private:
+    mutable mutex mtx_;
+    condition_variable not_empty_;
+    size_type waiting_empty_;
+    boost::container::deque<ValueType> data_;
+    bool closed_;
+
+    inline bool empty(unique_lock<mutex>& ) const BOOST_NOEXCEPT
+    {
+      return data_.empty();
+    }
+    inline bool empty(lock_guard<mutex>& ) const BOOST_NOEXCEPT
+    {
+      return data_.empty();
+    }
+
+    inline size_type size(lock_guard<mutex>& ) const BOOST_NOEXCEPT
+    {
+      return data_.size();
+    }
+
+    inline void throw_if_closed(unique_lock<mutex>&);
+
+    inline bool try_pull(value_type& x, unique_lock<mutex>& lk);
+    inline bool try_push(const value_type& x, unique_lock<mutex>& lk);
+    inline bool try_push(BOOST_THREAD_RV_REF(value_type) x, unique_lock<mutex>& lk);
+    inline shared_ptr<value_type> try_pull(unique_lock<mutex>& lk);
+
+    inline void wait_until_not_empty(unique_lock<mutex>& lk);
+    inline void wait_until_not_empty(unique_lock<mutex>& lk, bool&);
+
+    inline void notify_not_empty_if_needed(unique_lock<mutex>& lk)
+    {
+      if (waiting_empty_ > 0)
+      {
+        --waiting_empty_;
+        lk.unlock();
+        not_empty_.notify_one();
+      }
+    }
+
+    inline void pull(value_type& elem, unique_lock<mutex>& )
+    {
+      elem = boost::move(data_.front());
+      data_.pop_front();
+    }
+    inline boost::shared_ptr<value_type> ptr_pull(unique_lock<mutex>& )
+    {
+      shared_ptr<value_type> res = make_shared<value_type>(boost::move(data_.front()));
+      data_.pop_front();
+      return res;
+    }
+
+    inline void push(const value_type& elem, unique_lock<mutex>& lk)
+    {
+      data_.push_back(elem);
+      notify_not_empty_if_needed(lk);
+    }
+
+    inline void push(BOOST_THREAD_RV_REF(value_type) elem, unique_lock<mutex>& lk)
+    {
+      data_.push(boost::move(elem));
+      notify_not_empty_if_needed(lk);
+    }
+  };
+
+  template <typename ValueType>
+  sync_queue<ValueType>::sync_queue() :
+    waiting_empty_(0), data_(), closed_(false)
+  {
+    BOOST_ASSERT(data_.empty());
+  }
+
+//  template <typename ValueType>
+//  template <typename Range>
+//  explicit sync_queue<ValueType>::sync_queue(Range range) :
+//    waiting_empty_(0), data_(), closed_(false)
+//  {
+//    try
+//    {
+//      typedef typename Range::iterator iterator_t;
+//      iterator_t first = boost::begin(range);
+//      iterator_t end = boost::end(range);
+//      for (iterator_t cur = first; cur != end; ++cur)
+//      {
+//        data_.push(boost::move(*cur));;
+//      }
+//      notify_not_empty_if_needed(lk);
+//    }
+//    catch (...)
+//    {
+//      delete[] data_;
+//    }
+//  }
+
+  template <typename ValueType>
+  sync_queue<ValueType>::~sync_queue()
+  {
+  }
+
+  template <typename ValueType>
+  void sync_queue<ValueType>::close()
+  {
+    {
+      lock_guard<mutex> lk(mtx_);
+      closed_ = true;
+    }
+    not_empty_.notify_all();
+  }
+
+  template <typename ValueType>
+  bool sync_queue<ValueType>::closed() const
+  {
+    lock_guard<mutex> lk(mtx_);
+    return closed_;
+  }
+
+  template <typename ValueType>
+  bool sync_queue<ValueType>::empty() const
+  {
+    lock_guard<mutex> lk(mtx_);
+    return empty(lk);
+  }
+  template <typename ValueType>
+  bool sync_queue<ValueType>::full() const
+  {
+    return false;
+  }
+
+  template <typename ValueType>
+  typename sync_queue<ValueType>::size_type sync_queue<ValueType>::size() const
+  {
+    lock_guard<mutex> lk(mtx_);
+    return size(lk);
+  }
+
+
+  template <typename ValueType>
+  bool sync_queue<ValueType>::try_pull(ValueType& elem, unique_lock<mutex>& lk)
+  {
+    if (empty(lk))
+    {
+      throw_if_closed(lk);
+      return false;
+    }
+    pull(elem, lk);
+    return true;
+  }
+  template <typename ValueType>
+  shared_ptr<ValueType> sync_queue<ValueType>::try_pull(unique_lock<mutex>& lk)
+  {
+    if (empty(lk))
+    {
+      throw_if_closed(lk);
+      return shared_ptr<ValueType>();
+    }
+    return ptr_pull(lk);
+  }
+
+  template <typename ValueType>
+  bool sync_queue<ValueType>::try_pull(ValueType& elem)
+  {
+    try
+    {
+      unique_lock<mutex> lk(mtx_);
+      return try_pull(elem, lk);
+    }
+    catch (...)
+    {
+      close();
+      throw;
+    }
+  }
+
+  template <typename ValueType>
+  bool sync_queue<ValueType>::try_pull(no_block_tag,ValueType& elem)
+  {
+    try
+    {
+      unique_lock<mutex> lk(mtx_, try_to_lock);
+      if (!lk.owns_lock())
+      {
+        return false;
+      }
+      return try_pull(elem, lk);
+    }
+    catch (...)
+    {
+      close();
+      throw;
+    }
+  }
+  template <typename ValueType>
+  boost::shared_ptr<ValueType> sync_queue<ValueType>::try_pull()
+  {
+    try
+    {
+      unique_lock<mutex> lk(mtx_);
+      return try_pull(lk);
+    }
+    catch (...)
+    {
+      close();
+      throw;
+    }
+  }
+
+  template <typename ValueType>
+  void sync_queue<ValueType>::throw_if_closed(unique_lock<mutex>&)
+  {
+    if (closed_)
+    {
+      BOOST_THROW_EXCEPTION( sync_queue_is_closed() );
+    }
+  }
+
+  template <typename ValueType>
+  void sync_queue<ValueType>::wait_until_not_empty(unique_lock<mutex>& lk)
+  {
+    for (;;)
+    {
+      if (! empty(lk)) break;
+      throw_if_closed(lk);
+      ++waiting_empty_;
+      not_empty_.wait(lk);
+    }
+  }
+  template <typename ValueType>
+  void sync_queue<ValueType>::wait_until_not_empty(unique_lock<mutex>& lk, bool & closed)
+  {
+    for (;;)
+    {
+      if (! empty(lk)) break;
+      if (closed_) {closed=true; return;}
+      ++waiting_empty_;
+      not_empty_.wait(lk);
+    }
+    closed=false;
+  }
+
+  template <typename ValueType>
+  void sync_queue<ValueType>::pull(ValueType& elem)
+  {
+    try
+    {
+      unique_lock<mutex> lk(mtx_);
+      wait_until_not_empty(lk);
+      pull(elem, lk);
+    }
+    catch (...)
+    {
+      close();
+      throw;
+    }
+  }
+  template <typename ValueType>
+  void sync_queue<ValueType>::pull(ValueType& elem, bool & closed)
+  {
+    try
+    {
+      unique_lock<mutex> lk(mtx_);
+      wait_until_not_empty(lk, closed);
+      if (closed) {return;}
+      pull(elem, lk);
+    }
+    catch (...)
+    {
+      close();
+      throw;
+    }
+  }
+
+  // enable if ValueType is nothrow movable
+  template <typename ValueType>
+  ValueType sync_queue<ValueType>::pull()
+  {
+    try
+    {
+      value_type elem;
+      pull(elem);
+      return boost::move(elem);
+    }
+    catch (...)
+    {
+      close();
+      throw;
+    }
+  }
+  template <typename ValueType>
+  boost::shared_ptr<ValueType> sync_queue<ValueType>::ptr_pull()
+  {
+    try
+    {
+      unique_lock<mutex> lk(mtx_);
+      wait_until_not_empty(lk);
+      return ptr_pull(lk);
+    }
+    catch (...)
+    {
+      close();
+      throw;
+    }
+  }
+
+  template <typename ValueType>
+  bool sync_queue<ValueType>::try_push(const ValueType& elem, unique_lock<mutex>& lk)
+  {
+    throw_if_closed(lk);
+    push(elem, lk);
+    return true;
+  }
+
+  template <typename ValueType>
+  bool sync_queue<ValueType>::try_push(const ValueType& elem)
+  {
+    try
+    {
+      unique_lock<mutex> lk(mtx_);
+      return try_push(elem, lk);
+    }
+    catch (...)
+    {
+      close();
+      throw;
+    }
+  }
+
+  template <typename ValueType>
+  bool sync_queue<ValueType>::try_push(no_block_tag, const ValueType& elem)
+  {
+    try
+    {
+      unique_lock<mutex> lk(mtx_, try_to_lock);
+      if (!lk.owns_lock()) return false;
+      return try_push(elem, lk);
+    }
+    catch (...)
+    {
+      close();
+      throw;
+    }
+  }
+
+  template <typename ValueType>
+  void sync_queue<ValueType>::push(const ValueType& elem)
+  {
+    try
+    {
+      unique_lock<mutex> lk(mtx_);
+      throw_if_closed(lk);
+      push(elem, lk);
+    }
+    catch (...)
+    {
+      close();
+      throw;
+    }
+  }
+
+  template <typename ValueType>
+  bool sync_queue<ValueType>::try_push(BOOST_THREAD_RV_REF(ValueType) elem, unique_lock<mutex>& lk)
+  {
+    throw_if_closed(lk);
+    push(boost::forward<ValueType>(elem), lk);
+    return true;
+  }
+
+  template <typename ValueType>
+  bool sync_queue<ValueType>::try_push(BOOST_THREAD_RV_REF(ValueType) elem)
+  {
+    try
+    {
+      unique_lock<mutex> lk(mtx_);
+      return try_push(elem, lk);
+    }
+    catch (...)
+    {
+      close();
+      throw;
+    }
+  }
+
+  template <typename ValueType>
+  bool sync_queue<ValueType>::try_push(no_block_tag, BOOST_THREAD_RV_REF(ValueType) elem)
+  {
+    try
+    {
+      unique_lock<mutex> lk(mtx_, try_to_lock);
+      if (!lk.owns_lock())
+      {
+        return false;
+      }
+      return try_push(elem, lk);
+    }
+    catch (...)
+    {
+      close();
+      throw;
+    }
+  }
+
+  template <typename ValueType>
+  void sync_queue<ValueType>::push(BOOST_THREAD_RV_REF(ValueType) elem)
+  {
+    try
+    {
+      unique_lock<mutex> lk(mtx_);
+      throw_if_closed(lk);
+      push(elem, lk);
+    }
+    catch (...)
+    {
+      close();
+      throw;
+    }
+  }
+
+  template <typename ValueType>
+  sync_queue<ValueType>& operator<<(sync_queue<ValueType>& sbq, BOOST_THREAD_RV_REF(ValueType) elem)
+  {
+    sbq.push(boost::forward<ValueType>(elem));
+    return sbq;
+  }
+
+  template <typename ValueType>
+  sync_queue<ValueType>& operator<<(sync_queue<ValueType>& sbq, ValueType const&elem)
+  {
+    sbq.push(elem);
+    return sbq;
+  }
+
+  template <typename ValueType>
+  sync_queue<ValueType>& operator>>(sync_queue<ValueType>& sbq, ValueType &elem)
+  {
+    sbq.pull(elem);
+    return sbq;
+  }
+
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif