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

Add boost headers

+// (C) Copyright 2012 Vicente J. Botet Escriba
+// 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)
+
+
+#ifndef BOOST_THREAD_EXTERNALLY_LOCKED_STREAM_HPP
+#define BOOST_THREAD_EXTERNALLY_LOCKED_STREAM_HPP
+
+#include <boost/thread/detail/config.hpp>
+#include <boost/thread/detail/move.hpp>
+#include <boost/thread/detail/delete.hpp>
+
+#include <boost/thread/externally_locked.hpp>
+#include <boost/thread/lock_traits.hpp>
+#include <boost/thread/recursive_mutex.hpp>
+#include <boost/thread/strict_lock.hpp>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+
+  template <typename Stream, typename RecursiveMutex=recursive_mutex>
+  class externally_locked_stream;
+
+  template <class Stream, typename RecursiveMutex=recursive_mutex>
+  class stream_guard
+  {
+
+    friend class externally_locked_stream<Stream, RecursiveMutex> ;
+  public:
+    typedef typename externally_locked_stream<Stream, RecursiveMutex>::mutex_type mutex_type;
+
+    BOOST_THREAD_MOVABLE_ONLY( stream_guard)
+
+    stream_guard(externally_locked_stream<Stream, RecursiveMutex>& mtx) :
+      mtx_(&mtx)
+    {
+      mtx.lock();
+    }
+
+    stream_guard(externally_locked_stream<Stream, RecursiveMutex>& mtx, adopt_lock_t) :
+      mtx_(&mtx)
+    {
+    }
+
+    stream_guard(BOOST_THREAD_RV_REF(stream_guard) rhs) BOOST_NOEXCEPT
+    : mtx_(rhs.mtx_)
+    {
+      rhs.mtx_= 0;
+    }
+
+    ~stream_guard()
+    {
+      if (mtx_ != 0) mtx_->unlock();
+    }
+
+    bool owns_lock(const mutex_type * l) const BOOST_NOEXCEPT
+    {
+      return l == mtx_->mutex();
+    }
+
+    /**
+     * @Requires mtx_
+     */
+    Stream& get() const
+    {
+      BOOST_THREAD_ASSERT_PRECONDITION(  mtx_, lock_error() );
+      return mtx_->get(*this);
+    }
+    Stream& bypass() const
+    {
+      return get();
+    }
+
+
+  private:
+    externally_locked_stream<Stream, RecursiveMutex>* mtx_;
+  };
+
+  template <typename Stream, typename RecursiveMutex>
+  struct is_strict_lock_sur_parole<stream_guard<Stream, RecursiveMutex> > : true_type
+  {
+  };
+
+  /**
+   * externally_locked_stream cloaks a reference to an stream of type Stream, and actually
+   * provides full access to that object through the get and set member functions, provided you
+   * pass a reference to a strict lock object.
+   */
+
+  //[externally_locked_stream
+  template <typename Stream, typename RecursiveMutex>
+  class externally_locked_stream: public externally_locked<Stream&, RecursiveMutex>
+  {
+    typedef externally_locked<Stream&, RecursiveMutex> base_type;
+  public:
+    BOOST_THREAD_NO_COPYABLE( externally_locked_stream)
+
+    /**
+     * Effects: Constructs an externally locked object storing the cloaked reference object.
+     */
+    externally_locked_stream(Stream& stream, RecursiveMutex& mtx) BOOST_NOEXCEPT :
+      base_type(stream, mtx)
+    {
+    }
+
+    stream_guard<Stream, RecursiveMutex> hold() BOOST_NOEXCEPT
+    {
+      return stream_guard<Stream, RecursiveMutex> (*this);
+    }
+    Stream& bypass() const
+    {
+      stream_guard<Stream, RecursiveMutex> lk(*this);
+      return get(lk);
+    }
+  };
+  //]
+
+  template <typename Stream, typename RecursiveMutex, typename T>
+  inline const stream_guard<Stream, RecursiveMutex>& operator<<(const stream_guard<Stream, RecursiveMutex>& lck, T arg)
+  {
+    lck.get() << arg;
+    return lck;
+  }
+
+  template <typename Stream, typename RecursiveMutex>
+  inline const stream_guard<Stream, RecursiveMutex>& operator<<(const stream_guard<Stream, RecursiveMutex>& lck, Stream& (*arg)(Stream&))
+  {
+    lck.get() << arg;
+    return lck;
+  }
+
+  template <typename Stream, typename RecursiveMutex, typename T>
+  inline const stream_guard<Stream, RecursiveMutex>& operator>>(const stream_guard<Stream, RecursiveMutex>& lck, T& arg)
+  {
+    lck.get() >> arg;
+    return lck;
+  }
+
+  template <typename Stream, typename RecursiveMutex, typename T>
+  inline stream_guard<Stream, RecursiveMutex> operator<<(externally_locked_stream<Stream, RecursiveMutex>& mtx, T arg)
+  {
+    stream_guard<Stream, RecursiveMutex> lk(mtx);
+    mtx.get(lk) << arg;
+    return boost::move(lk);
+  }
+
+  template <typename Stream, typename RecursiveMutex>
+  inline stream_guard<Stream, RecursiveMutex> operator<<(externally_locked_stream<Stream, RecursiveMutex>& mtx, Stream& (*arg)(Stream&))
+  {
+    stream_guard<Stream, RecursiveMutex> lk(mtx);
+    mtx.get(lk) << arg;
+    return boost::move(lk);
+  }
+
+  template <typename Stream, typename RecursiveMutex, typename T>
+  inline stream_guard<Stream, RecursiveMutex> operator>>(externally_locked_stream<Stream, RecursiveMutex>& mtx, T& arg)
+  {
+    stream_guard<Stream, RecursiveMutex> lk(mtx);
+    mtx.get(lk) >> arg;
+    return boost::move(lk);
+  }
+
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif // header