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Posted to common-commits@hadoop.apache.org by wh...@apache.org on 2015/10/16 20:57:14 UTC
[42/51] [abbrv] [partial] hadoop git commit: HDFS-9207. Move the
implementation to the hdfs-native-client module. Contributed by Haohui Mai.
http://git-wip-us.apache.org/repos/asf/hadoop/blob/ea310d75/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffered_stream.hpp
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diff --git a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffered_stream.hpp b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffered_stream.hpp
deleted file mode 100644
index 0516090..0000000
--- a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffered_stream.hpp
+++ /dev/null
@@ -1,258 +0,0 @@
-//
-// buffered_stream.hpp
-// ~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2014 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// 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 ASIO_BUFFERED_STREAM_HPP
-#define ASIO_BUFFERED_STREAM_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include <cstddef>
-#include "asio/async_result.hpp"
-#include "asio/buffered_read_stream.hpp"
-#include "asio/buffered_write_stream.hpp"
-#include "asio/buffered_stream_fwd.hpp"
-#include "asio/detail/noncopyable.hpp"
-#include "asio/error.hpp"
-#include "asio/io_service.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-/// Adds buffering to the read- and write-related operations of a stream.
-/**
- * The buffered_stream class template can be used to add buffering to the
- * synchronous and asynchronous read and write operations of a stream.
- *
- * @par Thread Safety
- * @e Distinct @e objects: Safe.@n
- * @e Shared @e objects: Unsafe.
- *
- * @par Concepts:
- * AsyncReadStream, AsyncWriteStream, Stream, SyncReadStream, SyncWriteStream.
- */
-template <typename Stream>
-class buffered_stream
- : private noncopyable
-{
-public:
- /// The type of the next layer.
- typedef typename remove_reference<Stream>::type next_layer_type;
-
- /// The type of the lowest layer.
- typedef typename next_layer_type::lowest_layer_type lowest_layer_type;
-
- /// Construct, passing the specified argument to initialise the next layer.
- template <typename Arg>
- explicit buffered_stream(Arg& a)
- : inner_stream_impl_(a),
- stream_impl_(inner_stream_impl_)
- {
- }
-
- /// Construct, passing the specified argument to initialise the next layer.
- template <typename Arg>
- explicit buffered_stream(Arg& a, std::size_t read_buffer_size,
- std::size_t write_buffer_size)
- : inner_stream_impl_(a, write_buffer_size),
- stream_impl_(inner_stream_impl_, read_buffer_size)
- {
- }
-
- /// Get a reference to the next layer.
- next_layer_type& next_layer()
- {
- return stream_impl_.next_layer().next_layer();
- }
-
- /// Get a reference to the lowest layer.
- lowest_layer_type& lowest_layer()
- {
- return stream_impl_.lowest_layer();
- }
-
- /// Get a const reference to the lowest layer.
- const lowest_layer_type& lowest_layer() const
- {
- return stream_impl_.lowest_layer();
- }
-
- /// Get the io_service associated with the object.
- asio::io_service& get_io_service()
- {
- return stream_impl_.get_io_service();
- }
-
- /// Close the stream.
- void close()
- {
- stream_impl_.close();
- }
-
- /// Close the stream.
- asio::error_code close(asio::error_code& ec)
- {
- return stream_impl_.close(ec);
- }
-
- /// Flush all data from the buffer to the next layer. Returns the number of
- /// bytes written to the next layer on the last write operation. Throws an
- /// exception on failure.
- std::size_t flush()
- {
- return stream_impl_.next_layer().flush();
- }
-
- /// Flush all data from the buffer to the next layer. Returns the number of
- /// bytes written to the next layer on the last write operation, or 0 if an
- /// error occurred.
- std::size_t flush(asio::error_code& ec)
- {
- return stream_impl_.next_layer().flush(ec);
- }
-
- /// Start an asynchronous flush.
- template <typename WriteHandler>
- ASIO_INITFN_RESULT_TYPE(WriteHandler,
- void (asio::error_code, std::size_t))
- async_flush(ASIO_MOVE_ARG(WriteHandler) handler)
- {
- return stream_impl_.next_layer().async_flush(
- ASIO_MOVE_CAST(WriteHandler)(handler));
- }
-
- /// Write the given data to the stream. Returns the number of bytes written.
- /// Throws an exception on failure.
- template <typename ConstBufferSequence>
- std::size_t write_some(const ConstBufferSequence& buffers)
- {
- return stream_impl_.write_some(buffers);
- }
-
- /// Write the given data to the stream. Returns the number of bytes written,
- /// or 0 if an error occurred.
- template <typename ConstBufferSequence>
- std::size_t write_some(const ConstBufferSequence& buffers,
- asio::error_code& ec)
- {
- return stream_impl_.write_some(buffers, ec);
- }
-
- /// Start an asynchronous write. The data being written must be valid for the
- /// lifetime of the asynchronous operation.
- template <typename ConstBufferSequence, typename WriteHandler>
- ASIO_INITFN_RESULT_TYPE(WriteHandler,
- void (asio::error_code, std::size_t))
- async_write_some(const ConstBufferSequence& buffers,
- ASIO_MOVE_ARG(WriteHandler) handler)
- {
- return stream_impl_.async_write_some(buffers,
- ASIO_MOVE_CAST(WriteHandler)(handler));
- }
-
- /// Fill the buffer with some data. Returns the number of bytes placed in the
- /// buffer as a result of the operation. Throws an exception on failure.
- std::size_t fill()
- {
- return stream_impl_.fill();
- }
-
- /// Fill the buffer with some data. Returns the number of bytes placed in the
- /// buffer as a result of the operation, or 0 if an error occurred.
- std::size_t fill(asio::error_code& ec)
- {
- return stream_impl_.fill(ec);
- }
-
- /// Start an asynchronous fill.
- template <typename ReadHandler>
- ASIO_INITFN_RESULT_TYPE(ReadHandler,
- void (asio::error_code, std::size_t))
- async_fill(ASIO_MOVE_ARG(ReadHandler) handler)
- {
- return stream_impl_.async_fill(ASIO_MOVE_CAST(ReadHandler)(handler));
- }
-
- /// Read some data from the stream. Returns the number of bytes read. Throws
- /// an exception on failure.
- template <typename MutableBufferSequence>
- std::size_t read_some(const MutableBufferSequence& buffers)
- {
- return stream_impl_.read_some(buffers);
- }
-
- /// Read some data from the stream. Returns the number of bytes read or 0 if
- /// an error occurred.
- template <typename MutableBufferSequence>
- std::size_t read_some(const MutableBufferSequence& buffers,
- asio::error_code& ec)
- {
- return stream_impl_.read_some(buffers, ec);
- }
-
- /// Start an asynchronous read. The buffer into which the data will be read
- /// must be valid for the lifetime of the asynchronous operation.
- template <typename MutableBufferSequence, typename ReadHandler>
- ASIO_INITFN_RESULT_TYPE(ReadHandler,
- void (asio::error_code, std::size_t))
- async_read_some(const MutableBufferSequence& buffers,
- ASIO_MOVE_ARG(ReadHandler) handler)
- {
- return stream_impl_.async_read_some(buffers,
- ASIO_MOVE_CAST(ReadHandler)(handler));
- }
-
- /// Peek at the incoming data on the stream. Returns the number of bytes read.
- /// Throws an exception on failure.
- template <typename MutableBufferSequence>
- std::size_t peek(const MutableBufferSequence& buffers)
- {
- return stream_impl_.peek(buffers);
- }
-
- /// Peek at the incoming data on the stream. Returns the number of bytes read,
- /// or 0 if an error occurred.
- template <typename MutableBufferSequence>
- std::size_t peek(const MutableBufferSequence& buffers,
- asio::error_code& ec)
- {
- return stream_impl_.peek(buffers, ec);
- }
-
- /// Determine the amount of data that may be read without blocking.
- std::size_t in_avail()
- {
- return stream_impl_.in_avail();
- }
-
- /// Determine the amount of data that may be read without blocking.
- std::size_t in_avail(asio::error_code& ec)
- {
- return stream_impl_.in_avail(ec);
- }
-
-private:
- // The buffered write stream.
- typedef buffered_write_stream<Stream> write_stream_type;
- write_stream_type inner_stream_impl_;
-
- // The buffered read stream.
- typedef buffered_read_stream<write_stream_type&> read_stream_type;
- read_stream_type stream_impl_;
-};
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_BUFFERED_STREAM_HPP
http://git-wip-us.apache.org/repos/asf/hadoop/blob/ea310d75/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffered_stream_fwd.hpp
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diff --git a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffered_stream_fwd.hpp b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffered_stream_fwd.hpp
deleted file mode 100644
index a5730bf..0000000
--- a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffered_stream_fwd.hpp
+++ /dev/null
@@ -1,25 +0,0 @@
-//
-// buffered_stream_fwd.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2014 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// 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 ASIO_BUFFERED_STREAM_FWD_HPP
-#define ASIO_BUFFERED_STREAM_FWD_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-namespace asio {
-
-template <typename Stream>
-class buffered_stream;
-
-} // namespace asio
-
-#endif // ASIO_BUFFERED_STREAM_FWD_HPP
http://git-wip-us.apache.org/repos/asf/hadoop/blob/ea310d75/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffered_write_stream.hpp
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diff --git a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffered_write_stream.hpp b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffered_write_stream.hpp
deleted file mode 100644
index 5198d90..0000000
--- a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffered_write_stream.hpp
+++ /dev/null
@@ -1,236 +0,0 @@
-//
-// buffered_write_stream.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2014 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// 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 ASIO_BUFFERED_WRITE_STREAM_HPP
-#define ASIO_BUFFERED_WRITE_STREAM_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include <cstddef>
-#include "asio/buffered_write_stream_fwd.hpp"
-#include "asio/buffer.hpp"
-#include "asio/completion_condition.hpp"
-#include "asio/detail/bind_handler.hpp"
-#include "asio/detail/buffered_stream_storage.hpp"
-#include "asio/detail/noncopyable.hpp"
-#include "asio/detail/type_traits.hpp"
-#include "asio/error.hpp"
-#include "asio/io_service.hpp"
-#include "asio/write.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-/// Adds buffering to the write-related operations of a stream.
-/**
- * The buffered_write_stream class template can be used to add buffering to the
- * synchronous and asynchronous write operations of a stream.
- *
- * @par Thread Safety
- * @e Distinct @e objects: Safe.@n
- * @e Shared @e objects: Unsafe.
- *
- * @par Concepts:
- * AsyncReadStream, AsyncWriteStream, Stream, SyncReadStream, SyncWriteStream.
- */
-template <typename Stream>
-class buffered_write_stream
- : private noncopyable
-{
-public:
- /// The type of the next layer.
- typedef typename remove_reference<Stream>::type next_layer_type;
-
- /// The type of the lowest layer.
- typedef typename next_layer_type::lowest_layer_type lowest_layer_type;
-
-#if defined(GENERATING_DOCUMENTATION)
- /// The default buffer size.
- static const std::size_t default_buffer_size = implementation_defined;
-#else
- ASIO_STATIC_CONSTANT(std::size_t, default_buffer_size = 1024);
-#endif
-
- /// Construct, passing the specified argument to initialise the next layer.
- template <typename Arg>
- explicit buffered_write_stream(Arg& a)
- : next_layer_(a),
- storage_(default_buffer_size)
- {
- }
-
- /// Construct, passing the specified argument to initialise the next layer.
- template <typename Arg>
- buffered_write_stream(Arg& a, std::size_t buffer_size)
- : next_layer_(a),
- storage_(buffer_size)
- {
- }
-
- /// Get a reference to the next layer.
- next_layer_type& next_layer()
- {
- return next_layer_;
- }
-
- /// Get a reference to the lowest layer.
- lowest_layer_type& lowest_layer()
- {
- return next_layer_.lowest_layer();
- }
-
- /// Get a const reference to the lowest layer.
- const lowest_layer_type& lowest_layer() const
- {
- return next_layer_.lowest_layer();
- }
-
- /// Get the io_service associated with the object.
- asio::io_service& get_io_service()
- {
- return next_layer_.get_io_service();
- }
-
- /// Close the stream.
- void close()
- {
- next_layer_.close();
- }
-
- /// Close the stream.
- asio::error_code close(asio::error_code& ec)
- {
- return next_layer_.close(ec);
- }
-
- /// Flush all data from the buffer to the next layer. Returns the number of
- /// bytes written to the next layer on the last write operation. Throws an
- /// exception on failure.
- std::size_t flush();
-
- /// Flush all data from the buffer to the next layer. Returns the number of
- /// bytes written to the next layer on the last write operation, or 0 if an
- /// error occurred.
- std::size_t flush(asio::error_code& ec);
-
- /// Start an asynchronous flush.
- template <typename WriteHandler>
- ASIO_INITFN_RESULT_TYPE(WriteHandler,
- void (asio::error_code, std::size_t))
- async_flush(ASIO_MOVE_ARG(WriteHandler) handler);
-
- /// Write the given data to the stream. Returns the number of bytes written.
- /// Throws an exception on failure.
- template <typename ConstBufferSequence>
- std::size_t write_some(const ConstBufferSequence& buffers);
-
- /// Write the given data to the stream. Returns the number of bytes written,
- /// or 0 if an error occurred and the error handler did not throw.
- template <typename ConstBufferSequence>
- std::size_t write_some(const ConstBufferSequence& buffers,
- asio::error_code& ec);
-
- /// Start an asynchronous write. The data being written must be valid for the
- /// lifetime of the asynchronous operation.
- template <typename ConstBufferSequence, typename WriteHandler>
- ASIO_INITFN_RESULT_TYPE(WriteHandler,
- void (asio::error_code, std::size_t))
- async_write_some(const ConstBufferSequence& buffers,
- ASIO_MOVE_ARG(WriteHandler) handler);
-
- /// Read some data from the stream. Returns the number of bytes read. Throws
- /// an exception on failure.
- template <typename MutableBufferSequence>
- std::size_t read_some(const MutableBufferSequence& buffers)
- {
- return next_layer_.read_some(buffers);
- }
-
- /// Read some data from the stream. Returns the number of bytes read or 0 if
- /// an error occurred.
- template <typename MutableBufferSequence>
- std::size_t read_some(const MutableBufferSequence& buffers,
- asio::error_code& ec)
- {
- return next_layer_.read_some(buffers, ec);
- }
-
- /// Start an asynchronous read. The buffer into which the data will be read
- /// must be valid for the lifetime of the asynchronous operation.
- template <typename MutableBufferSequence, typename ReadHandler>
- ASIO_INITFN_RESULT_TYPE(ReadHandler,
- void (asio::error_code, std::size_t))
- async_read_some(const MutableBufferSequence& buffers,
- ASIO_MOVE_ARG(ReadHandler) handler)
- {
- detail::async_result_init<
- ReadHandler, void (asio::error_code, std::size_t)> init(
- ASIO_MOVE_CAST(ReadHandler)(handler));
-
- next_layer_.async_read_some(buffers,
- ASIO_MOVE_CAST(ASIO_HANDLER_TYPE(ReadHandler,
- void (asio::error_code, std::size_t)))(init.handler));
-
- return init.result.get();
- }
-
- /// Peek at the incoming data on the stream. Returns the number of bytes read.
- /// Throws an exception on failure.
- template <typename MutableBufferSequence>
- std::size_t peek(const MutableBufferSequence& buffers)
- {
- return next_layer_.peek(buffers);
- }
-
- /// Peek at the incoming data on the stream. Returns the number of bytes read,
- /// or 0 if an error occurred.
- template <typename MutableBufferSequence>
- std::size_t peek(const MutableBufferSequence& buffers,
- asio::error_code& ec)
- {
- return next_layer_.peek(buffers, ec);
- }
-
- /// Determine the amount of data that may be read without blocking.
- std::size_t in_avail()
- {
- return next_layer_.in_avail();
- }
-
- /// Determine the amount of data that may be read without blocking.
- std::size_t in_avail(asio::error_code& ec)
- {
- return next_layer_.in_avail(ec);
- }
-
-private:
- /// Copy data into the internal buffer from the specified source buffer.
- /// Returns the number of bytes copied.
- template <typename ConstBufferSequence>
- std::size_t copy(const ConstBufferSequence& buffers);
-
- /// The next layer.
- Stream next_layer_;
-
- // The data in the buffer.
- detail::buffered_stream_storage storage_;
-};
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#include "asio/impl/buffered_write_stream.hpp"
-
-#endif // ASIO_BUFFERED_WRITE_STREAM_HPP
http://git-wip-us.apache.org/repos/asf/hadoop/blob/ea310d75/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffered_write_stream_fwd.hpp
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diff --git a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffered_write_stream_fwd.hpp b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffered_write_stream_fwd.hpp
deleted file mode 100644
index 53ef7b8..0000000
--- a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffered_write_stream_fwd.hpp
+++ /dev/null
@@ -1,25 +0,0 @@
-//
-// buffered_write_stream_fwd.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2014 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// 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 ASIO_BUFFERED_WRITE_STREAM_FWD_HPP
-#define ASIO_BUFFERED_WRITE_STREAM_FWD_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-namespace asio {
-
-template <typename Stream>
-class buffered_write_stream;
-
-} // namespace asio
-
-#endif // ASIO_BUFFERED_WRITE_STREAM_FWD_HPP
http://git-wip-us.apache.org/repos/asf/hadoop/blob/ea310d75/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffers_iterator.hpp
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diff --git a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffers_iterator.hpp b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffers_iterator.hpp
deleted file mode 100644
index a64a89f..0000000
--- a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/buffers_iterator.hpp
+++ /dev/null
@@ -1,481 +0,0 @@
-//
-// buffers_iterator.hpp
-// ~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2014 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// 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 ASIO_BUFFERS_ITERATOR_HPP
-#define ASIO_BUFFERS_ITERATOR_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include <cstddef>
-#include <iterator>
-#include "asio/buffer.hpp"
-#include "asio/detail/assert.hpp"
-#include "asio/detail/type_traits.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-namespace detail
-{
- template <bool IsMutable>
- struct buffers_iterator_types_helper;
-
- template <>
- struct buffers_iterator_types_helper<false>
- {
- typedef const_buffer buffer_type;
- template <typename ByteType>
- struct byte_type
- {
- typedef typename add_const<ByteType>::type type;
- };
- };
-
- template <>
- struct buffers_iterator_types_helper<true>
- {
- typedef mutable_buffer buffer_type;
- template <typename ByteType>
- struct byte_type
- {
- typedef ByteType type;
- };
- };
-
- template <typename BufferSequence, typename ByteType>
- struct buffers_iterator_types
- {
- enum
- {
- is_mutable = is_convertible<
- typename BufferSequence::value_type,
- mutable_buffer>::value
- };
- typedef buffers_iterator_types_helper<is_mutable> helper;
- typedef typename helper::buffer_type buffer_type;
- typedef typename helper::template byte_type<ByteType>::type byte_type;
- };
-}
-
-/// A random access iterator over the bytes in a buffer sequence.
-template <typename BufferSequence, typename ByteType = char>
-class buffers_iterator
-{
-private:
- typedef typename detail::buffers_iterator_types<
- BufferSequence, ByteType>::buffer_type buffer_type;
-
-public:
- /// The type used for the distance between two iterators.
- typedef std::ptrdiff_t difference_type;
-
- /// The type of the value pointed to by the iterator.
- typedef ByteType value_type;
-
-#if defined(GENERATING_DOCUMENTATION)
- /// The type of the result of applying operator->() to the iterator.
- /**
- * If the buffer sequence stores buffer objects that are convertible to
- * mutable_buffer, this is a pointer to a non-const ByteType. Otherwise, a
- * pointer to a const ByteType.
- */
- typedef const_or_non_const_ByteType* pointer;
-#else // defined(GENERATING_DOCUMENTATION)
- typedef typename detail::buffers_iterator_types<
- BufferSequence, ByteType>::byte_type* pointer;
-#endif // defined(GENERATING_DOCUMENTATION)
-
-#if defined(GENERATING_DOCUMENTATION)
- /// The type of the result of applying operator*() to the iterator.
- /**
- * If the buffer sequence stores buffer objects that are convertible to
- * mutable_buffer, this is a reference to a non-const ByteType. Otherwise, a
- * reference to a const ByteType.
- */
- typedef const_or_non_const_ByteType& reference;
-#else // defined(GENERATING_DOCUMENTATION)
- typedef typename detail::buffers_iterator_types<
- BufferSequence, ByteType>::byte_type& reference;
-#endif // defined(GENERATING_DOCUMENTATION)
-
- /// The iterator category.
- typedef std::random_access_iterator_tag iterator_category;
-
- /// Default constructor. Creates an iterator in an undefined state.
- buffers_iterator()
- : current_buffer_(),
- current_buffer_position_(0),
- begin_(),
- current_(),
- end_(),
- position_(0)
- {
- }
-
- /// Construct an iterator representing the beginning of the buffers' data.
- static buffers_iterator begin(const BufferSequence& buffers)
-#if defined(__GNUC__) && (__GNUC__ == 4) && (__GNUC_MINOR__ == 3)
- __attribute__ ((__noinline__))
-#endif // defined(__GNUC__) && (__GNUC__ == 4) && (__GNUC_MINOR__ == 3)
- {
- buffers_iterator new_iter;
- new_iter.begin_ = buffers.begin();
- new_iter.current_ = buffers.begin();
- new_iter.end_ = buffers.end();
- while (new_iter.current_ != new_iter.end_)
- {
- new_iter.current_buffer_ = *new_iter.current_;
- if (asio::buffer_size(new_iter.current_buffer_) > 0)
- break;
- ++new_iter.current_;
- }
- return new_iter;
- }
-
- /// Construct an iterator representing the end of the buffers' data.
- static buffers_iterator end(const BufferSequence& buffers)
-#if defined(__GNUC__) && (__GNUC__ == 4) && (__GNUC_MINOR__ == 3)
- __attribute__ ((__noinline__))
-#endif // defined(__GNUC__) && (__GNUC__ == 4) && (__GNUC_MINOR__ == 3)
- {
- buffers_iterator new_iter;
- new_iter.begin_ = buffers.begin();
- new_iter.current_ = buffers.begin();
- new_iter.end_ = buffers.end();
- while (new_iter.current_ != new_iter.end_)
- {
- buffer_type buffer = *new_iter.current_;
- new_iter.position_ += asio::buffer_size(buffer);
- ++new_iter.current_;
- }
- return new_iter;
- }
-
- /// Dereference an iterator.
- reference operator*() const
- {
- return dereference();
- }
-
- /// Dereference an iterator.
- pointer operator->() const
- {
- return &dereference();
- }
-
- /// Access an individual element.
- reference operator[](std::ptrdiff_t difference) const
- {
- buffers_iterator tmp(*this);
- tmp.advance(difference);
- return *tmp;
- }
-
- /// Increment operator (prefix).
- buffers_iterator& operator++()
- {
- increment();
- return *this;
- }
-
- /// Increment operator (postfix).
- buffers_iterator operator++(int)
- {
- buffers_iterator tmp(*this);
- ++*this;
- return tmp;
- }
-
- /// Decrement operator (prefix).
- buffers_iterator& operator--()
- {
- decrement();
- return *this;
- }
-
- /// Decrement operator (postfix).
- buffers_iterator operator--(int)
- {
- buffers_iterator tmp(*this);
- --*this;
- return tmp;
- }
-
- /// Addition operator.
- buffers_iterator& operator+=(std::ptrdiff_t difference)
- {
- advance(difference);
- return *this;
- }
-
- /// Subtraction operator.
- buffers_iterator& operator-=(std::ptrdiff_t difference)
- {
- advance(-difference);
- return *this;
- }
-
- /// Addition operator.
- friend buffers_iterator operator+(const buffers_iterator& iter,
- std::ptrdiff_t difference)
- {
- buffers_iterator tmp(iter);
- tmp.advance(difference);
- return tmp;
- }
-
- /// Addition operator.
- friend buffers_iterator operator+(std::ptrdiff_t difference,
- const buffers_iterator& iter)
- {
- buffers_iterator tmp(iter);
- tmp.advance(difference);
- return tmp;
- }
-
- /// Subtraction operator.
- friend buffers_iterator operator-(const buffers_iterator& iter,
- std::ptrdiff_t difference)
- {
- buffers_iterator tmp(iter);
- tmp.advance(-difference);
- return tmp;
- }
-
- /// Subtraction operator.
- friend std::ptrdiff_t operator-(const buffers_iterator& a,
- const buffers_iterator& b)
- {
- return b.distance_to(a);
- }
-
- /// Test two iterators for equality.
- friend bool operator==(const buffers_iterator& a, const buffers_iterator& b)
- {
- return a.equal(b);
- }
-
- /// Test two iterators for inequality.
- friend bool operator!=(const buffers_iterator& a, const buffers_iterator& b)
- {
- return !a.equal(b);
- }
-
- /// Compare two iterators.
- friend bool operator<(const buffers_iterator& a, const buffers_iterator& b)
- {
- return a.distance_to(b) > 0;
- }
-
- /// Compare two iterators.
- friend bool operator<=(const buffers_iterator& a, const buffers_iterator& b)
- {
- return !(b < a);
- }
-
- /// Compare two iterators.
- friend bool operator>(const buffers_iterator& a, const buffers_iterator& b)
- {
- return b < a;
- }
-
- /// Compare two iterators.
- friend bool operator>=(const buffers_iterator& a, const buffers_iterator& b)
- {
- return !(a < b);
- }
-
-private:
- // Dereference the iterator.
- reference dereference() const
- {
- return buffer_cast<pointer>(current_buffer_)[current_buffer_position_];
- }
-
- // Compare two iterators for equality.
- bool equal(const buffers_iterator& other) const
- {
- return position_ == other.position_;
- }
-
- // Increment the iterator.
- void increment()
- {
- ASIO_ASSERT(current_ != end_ && "iterator out of bounds");
- ++position_;
-
- // Check if the increment can be satisfied by the current buffer.
- ++current_buffer_position_;
- if (current_buffer_position_ != asio::buffer_size(current_buffer_))
- return;
-
- // Find the next non-empty buffer.
- ++current_;
- current_buffer_position_ = 0;
- while (current_ != end_)
- {
- current_buffer_ = *current_;
- if (asio::buffer_size(current_buffer_) > 0)
- return;
- ++current_;
- }
- }
-
- // Decrement the iterator.
- void decrement()
- {
- ASIO_ASSERT(position_ > 0 && "iterator out of bounds");
- --position_;
-
- // Check if the decrement can be satisfied by the current buffer.
- if (current_buffer_position_ != 0)
- {
- --current_buffer_position_;
- return;
- }
-
- // Find the previous non-empty buffer.
- typename BufferSequence::const_iterator iter = current_;
- while (iter != begin_)
- {
- --iter;
- buffer_type buffer = *iter;
- std::size_t buffer_size = asio::buffer_size(buffer);
- if (buffer_size > 0)
- {
- current_ = iter;
- current_buffer_ = buffer;
- current_buffer_position_ = buffer_size - 1;
- return;
- }
- }
- }
-
- // Advance the iterator by the specified distance.
- void advance(std::ptrdiff_t n)
- {
- if (n > 0)
- {
- ASIO_ASSERT(current_ != end_ && "iterator out of bounds");
- for (;;)
- {
- std::ptrdiff_t current_buffer_balance
- = asio::buffer_size(current_buffer_)
- - current_buffer_position_;
-
- // Check if the advance can be satisfied by the current buffer.
- if (current_buffer_balance > n)
- {
- position_ += n;
- current_buffer_position_ += n;
- return;
- }
-
- // Update position.
- n -= current_buffer_balance;
- position_ += current_buffer_balance;
-
- // Move to next buffer. If it is empty then it will be skipped on the
- // next iteration of this loop.
- if (++current_ == end_)
- {
- ASIO_ASSERT(n == 0 && "iterator out of bounds");
- current_buffer_ = buffer_type();
- current_buffer_position_ = 0;
- return;
- }
- current_buffer_ = *current_;
- current_buffer_position_ = 0;
- }
- }
- else if (n < 0)
- {
- std::size_t abs_n = -n;
- ASIO_ASSERT(position_ >= abs_n && "iterator out of bounds");
- for (;;)
- {
- // Check if the advance can be satisfied by the current buffer.
- if (current_buffer_position_ >= abs_n)
- {
- position_ -= abs_n;
- current_buffer_position_ -= abs_n;
- return;
- }
-
- // Update position.
- abs_n -= current_buffer_position_;
- position_ -= current_buffer_position_;
-
- // Check if we've reached the beginning of the buffers.
- if (current_ == begin_)
- {
- ASIO_ASSERT(abs_n == 0 && "iterator out of bounds");
- current_buffer_position_ = 0;
- return;
- }
-
- // Find the previous non-empty buffer.
- typename BufferSequence::const_iterator iter = current_;
- while (iter != begin_)
- {
- --iter;
- buffer_type buffer = *iter;
- std::size_t buffer_size = asio::buffer_size(buffer);
- if (buffer_size > 0)
- {
- current_ = iter;
- current_buffer_ = buffer;
- current_buffer_position_ = buffer_size;
- break;
- }
- }
- }
- }
- }
-
- // Determine the distance between two iterators.
- std::ptrdiff_t distance_to(const buffers_iterator& other) const
- {
- return other.position_ - position_;
- }
-
- buffer_type current_buffer_;
- std::size_t current_buffer_position_;
- typename BufferSequence::const_iterator begin_;
- typename BufferSequence::const_iterator current_;
- typename BufferSequence::const_iterator end_;
- std::size_t position_;
-};
-
-/// Construct an iterator representing the beginning of the buffers' data.
-template <typename BufferSequence>
-inline buffers_iterator<BufferSequence> buffers_begin(
- const BufferSequence& buffers)
-{
- return buffers_iterator<BufferSequence>::begin(buffers);
-}
-
-/// Construct an iterator representing the end of the buffers' data.
-template <typename BufferSequence>
-inline buffers_iterator<BufferSequence> buffers_end(
- const BufferSequence& buffers)
-{
- return buffers_iterator<BufferSequence>::end(buffers);
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_BUFFERS_ITERATOR_HPP
http://git-wip-us.apache.org/repos/asf/hadoop/blob/ea310d75/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/completion_condition.hpp
----------------------------------------------------------------------
diff --git a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/completion_condition.hpp b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/completion_condition.hpp
deleted file mode 100644
index aab7617..0000000
--- a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/completion_condition.hpp
+++ /dev/null
@@ -1,218 +0,0 @@
-//
-// completion_condition.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2014 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// 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 ASIO_COMPLETION_CONDITION_HPP
-#define ASIO_COMPLETION_CONDITION_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include <cstddef>
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-namespace detail {
-
-// The default maximum number of bytes to transfer in a single operation.
-enum { default_max_transfer_size = 65536 };
-
-// Adapt result of old-style completion conditions (which had a bool result
-// where true indicated that the operation was complete).
-inline std::size_t adapt_completion_condition_result(bool result)
-{
- return result ? 0 : default_max_transfer_size;
-}
-
-// Adapt result of current completion conditions (which have a size_t result
-// where 0 means the operation is complete, and otherwise the result is the
-// maximum number of bytes to transfer on the next underlying operation).
-inline std::size_t adapt_completion_condition_result(std::size_t result)
-{
- return result;
-}
-
-class transfer_all_t
-{
-public:
- typedef std::size_t result_type;
-
- template <typename Error>
- std::size_t operator()(const Error& err, std::size_t)
- {
- return !!err ? 0 : default_max_transfer_size;
- }
-};
-
-class transfer_at_least_t
-{
-public:
- typedef std::size_t result_type;
-
- explicit transfer_at_least_t(std::size_t minimum)
- : minimum_(minimum)
- {
- }
-
- template <typename Error>
- std::size_t operator()(const Error& err, std::size_t bytes_transferred)
- {
- return (!!err || bytes_transferred >= minimum_)
- ? 0 : default_max_transfer_size;
- }
-
-private:
- std::size_t minimum_;
-};
-
-class transfer_exactly_t
-{
-public:
- typedef std::size_t result_type;
-
- explicit transfer_exactly_t(std::size_t size)
- : size_(size)
- {
- }
-
- template <typename Error>
- std::size_t operator()(const Error& err, std::size_t bytes_transferred)
- {
- return (!!err || bytes_transferred >= size_) ? 0 :
- (size_ - bytes_transferred < default_max_transfer_size
- ? size_ - bytes_transferred : std::size_t(default_max_transfer_size));
- }
-
-private:
- std::size_t size_;
-};
-
-} // namespace detail
-
-/**
- * @defgroup completion_condition Completion Condition Function Objects
- *
- * Function objects used for determining when a read or write operation should
- * complete.
- */
-/*@{*/
-
-/// Return a completion condition function object that indicates that a read or
-/// write operation should continue until all of the data has been transferred,
-/// or until an error occurs.
-/**
- * This function is used to create an object, of unspecified type, that meets
- * CompletionCondition requirements.
- *
- * @par Example
- * Reading until a buffer is full:
- * @code
- * boost::array<char, 128> buf;
- * asio::error_code ec;
- * std::size_t n = asio::read(
- * sock, asio::buffer(buf),
- * asio::transfer_all(), ec);
- * if (ec)
- * {
- * // An error occurred.
- * }
- * else
- * {
- * // n == 128
- * }
- * @endcode
- */
-#if defined(GENERATING_DOCUMENTATION)
-unspecified transfer_all();
-#else
-inline detail::transfer_all_t transfer_all()
-{
- return detail::transfer_all_t();
-}
-#endif
-
-/// Return a completion condition function object that indicates that a read or
-/// write operation should continue until a minimum number of bytes has been
-/// transferred, or until an error occurs.
-/**
- * This function is used to create an object, of unspecified type, that meets
- * CompletionCondition requirements.
- *
- * @par Example
- * Reading until a buffer is full or contains at least 64 bytes:
- * @code
- * boost::array<char, 128> buf;
- * asio::error_code ec;
- * std::size_t n = asio::read(
- * sock, asio::buffer(buf),
- * asio::transfer_at_least(64), ec);
- * if (ec)
- * {
- * // An error occurred.
- * }
- * else
- * {
- * // n >= 64 && n <= 128
- * }
- * @endcode
- */
-#if defined(GENERATING_DOCUMENTATION)
-unspecified transfer_at_least(std::size_t minimum);
-#else
-inline detail::transfer_at_least_t transfer_at_least(std::size_t minimum)
-{
- return detail::transfer_at_least_t(minimum);
-}
-#endif
-
-/// Return a completion condition function object that indicates that a read or
-/// write operation should continue until an exact number of bytes has been
-/// transferred, or until an error occurs.
-/**
- * This function is used to create an object, of unspecified type, that meets
- * CompletionCondition requirements.
- *
- * @par Example
- * Reading until a buffer is full or contains exactly 64 bytes:
- * @code
- * boost::array<char, 128> buf;
- * asio::error_code ec;
- * std::size_t n = asio::read(
- * sock, asio::buffer(buf),
- * asio::transfer_exactly(64), ec);
- * if (ec)
- * {
- * // An error occurred.
- * }
- * else
- * {
- * // n == 64
- * }
- * @endcode
- */
-#if defined(GENERATING_DOCUMENTATION)
-unspecified transfer_exactly(std::size_t size);
-#else
-inline detail::transfer_exactly_t transfer_exactly(std::size_t size)
-{
- return detail::transfer_exactly_t(size);
-}
-#endif
-
-/*@}*/
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_COMPLETION_CONDITION_HPP
http://git-wip-us.apache.org/repos/asf/hadoop/blob/ea310d75/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/connect.hpp
----------------------------------------------------------------------
diff --git a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/connect.hpp b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/connect.hpp
deleted file mode 100644
index 9912238..0000000
--- a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/connect.hpp
+++ /dev/null
@@ -1,823 +0,0 @@
-//
-// connect.hpp
-// ~~~~~~~~~~~
-//
-// Copyright (c) 2003-2014 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// 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 ASIO_CONNECT_HPP
-#define ASIO_CONNECT_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include "asio/async_result.hpp"
-#include "asio/basic_socket.hpp"
-#include "asio/error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-/**
- * @defgroup connect asio::connect
- *
- * @brief Establishes a socket connection by trying each endpoint in a sequence.
- */
-/*@{*/
-
-/// Establishes a socket connection by trying each endpoint in a sequence.
-/**
- * This function attempts to connect a socket to one of a sequence of
- * endpoints. It does this by repeated calls to the socket's @c connect member
- * function, once for each endpoint in the sequence, until a connection is
- * successfully established.
- *
- * @param s The socket to be connected. If the socket is already open, it will
- * be closed.
- *
- * @param begin An iterator pointing to the start of a sequence of endpoints.
- *
- * @returns On success, an iterator denoting the successfully connected
- * endpoint. Otherwise, the end iterator.
- *
- * @throws asio::system_error Thrown on failure. If the sequence is
- * empty, the associated @c error_code is asio::error::not_found.
- * Otherwise, contains the error from the last connection attempt.
- *
- * @note This overload assumes that a default constructed object of type @c
- * Iterator represents the end of the sequence. This is a valid assumption for
- * iterator types such as @c asio::ip::tcp::resolver::iterator.
- *
- * @par Example
- * @code tcp::resolver r(io_service);
- * tcp::resolver::query q("host", "service");
- * tcp::socket s(io_service);
- * asio::connect(s, r.resolve(q)); @endcode
- */
-template <typename Protocol, typename SocketService, typename Iterator>
-Iterator connect(basic_socket<Protocol, SocketService>& s, Iterator begin);
-
-/// Establishes a socket connection by trying each endpoint in a sequence.
-/**
- * This function attempts to connect a socket to one of a sequence of
- * endpoints. It does this by repeated calls to the socket's @c connect member
- * function, once for each endpoint in the sequence, until a connection is
- * successfully established.
- *
- * @param s The socket to be connected. If the socket is already open, it will
- * be closed.
- *
- * @param begin An iterator pointing to the start of a sequence of endpoints.
- *
- * @param ec Set to indicate what error occurred, if any. If the sequence is
- * empty, set to asio::error::not_found. Otherwise, contains the error
- * from the last connection attempt.
- *
- * @returns On success, an iterator denoting the successfully connected
- * endpoint. Otherwise, the end iterator.
- *
- * @note This overload assumes that a default constructed object of type @c
- * Iterator represents the end of the sequence. This is a valid assumption for
- * iterator types such as @c asio::ip::tcp::resolver::iterator.
- *
- * @par Example
- * @code tcp::resolver r(io_service);
- * tcp::resolver::query q("host", "service");
- * tcp::socket s(io_service);
- * asio::error_code ec;
- * asio::connect(s, r.resolve(q), ec);
- * if (ec)
- * {
- * // An error occurred.
- * } @endcode
- */
-template <typename Protocol, typename SocketService, typename Iterator>
-Iterator connect(basic_socket<Protocol, SocketService>& s,
- Iterator begin, asio::error_code& ec);
-
-/// Establishes a socket connection by trying each endpoint in a sequence.
-/**
- * This function attempts to connect a socket to one of a sequence of
- * endpoints. It does this by repeated calls to the socket's @c connect member
- * function, once for each endpoint in the sequence, until a connection is
- * successfully established.
- *
- * @param s The socket to be connected. If the socket is already open, it will
- * be closed.
- *
- * @param begin An iterator pointing to the start of a sequence of endpoints.
- *
- * @param end An iterator pointing to the end of a sequence of endpoints.
- *
- * @returns On success, an iterator denoting the successfully connected
- * endpoint. Otherwise, the end iterator.
- *
- * @throws asio::system_error Thrown on failure. If the sequence is
- * empty, the associated @c error_code is asio::error::not_found.
- * Otherwise, contains the error from the last connection attempt.
- *
- * @par Example
- * @code tcp::resolver r(io_service);
- * tcp::resolver::query q("host", "service");
- * tcp::resolver::iterator i = r.resolve(q), end;
- * tcp::socket s(io_service);
- * asio::connect(s, i, end); @endcode
- */
-template <typename Protocol, typename SocketService, typename Iterator>
-Iterator connect(basic_socket<Protocol, SocketService>& s,
- Iterator begin, Iterator end);
-
-/// Establishes a socket connection by trying each endpoint in a sequence.
-/**
- * This function attempts to connect a socket to one of a sequence of
- * endpoints. It does this by repeated calls to the socket's @c connect member
- * function, once for each endpoint in the sequence, until a connection is
- * successfully established.
- *
- * @param s The socket to be connected. If the socket is already open, it will
- * be closed.
- *
- * @param begin An iterator pointing to the start of a sequence of endpoints.
- *
- * @param end An iterator pointing to the end of a sequence of endpoints.
- *
- * @param ec Set to indicate what error occurred, if any. If the sequence is
- * empty, set to asio::error::not_found. Otherwise, contains the error
- * from the last connection attempt.
- *
- * @returns On success, an iterator denoting the successfully connected
- * endpoint. Otherwise, the end iterator.
- *
- * @par Example
- * @code tcp::resolver r(io_service);
- * tcp::resolver::query q("host", "service");
- * tcp::resolver::iterator i = r.resolve(q), end;
- * tcp::socket s(io_service);
- * asio::error_code ec;
- * asio::connect(s, i, end, ec);
- * if (ec)
- * {
- * // An error occurred.
- * } @endcode
- */
-template <typename Protocol, typename SocketService, typename Iterator>
-Iterator connect(basic_socket<Protocol, SocketService>& s,
- Iterator begin, Iterator end, asio::error_code& ec);
-
-/// Establishes a socket connection by trying each endpoint in a sequence.
-/**
- * This function attempts to connect a socket to one of a sequence of
- * endpoints. It does this by repeated calls to the socket's @c connect member
- * function, once for each endpoint in the sequence, until a connection is
- * successfully established.
- *
- * @param s The socket to be connected. If the socket is already open, it will
- * be closed.
- *
- * @param begin An iterator pointing to the start of a sequence of endpoints.
- *
- * @param connect_condition A function object that is called prior to each
- * connection attempt. The signature of the function object must be:
- * @code Iterator connect_condition(
- * const asio::error_code& ec,
- * Iterator next); @endcode
- * The @c ec parameter contains the result from the most recent connect
- * operation. Before the first connection attempt, @c ec is always set to
- * indicate success. The @c next parameter is an iterator pointing to the next
- * endpoint to be tried. The function object should return the next iterator,
- * but is permitted to return a different iterator so that endpoints may be
- * skipped. The implementation guarantees that the function object will never
- * be called with the end iterator.
- *
- * @returns On success, an iterator denoting the successfully connected
- * endpoint. Otherwise, the end iterator.
- *
- * @throws asio::system_error Thrown on failure. If the sequence is
- * empty, the associated @c error_code is asio::error::not_found.
- * Otherwise, contains the error from the last connection attempt.
- *
- * @note This overload assumes that a default constructed object of type @c
- * Iterator represents the end of the sequence. This is a valid assumption for
- * iterator types such as @c asio::ip::tcp::resolver::iterator.
- *
- * @par Example
- * The following connect condition function object can be used to output
- * information about the individual connection attempts:
- * @code struct my_connect_condition
- * {
- * template <typename Iterator>
- * Iterator operator()(
- * const asio::error_code& ec,
- * Iterator next)
- * {
- * if (ec) std::cout << "Error: " << ec.message() << std::endl;
- * std::cout << "Trying: " << next->endpoint() << std::endl;
- * return next;
- * }
- * }; @endcode
- * It would be used with the asio::connect function as follows:
- * @code tcp::resolver r(io_service);
- * tcp::resolver::query q("host", "service");
- * tcp::socket s(io_service);
- * tcp::resolver::iterator i = asio::connect(
- * s, r.resolve(q), my_connect_condition());
- * std::cout << "Connected to: " << i->endpoint() << std::endl; @endcode
- */
-template <typename Protocol, typename SocketService,
- typename Iterator, typename ConnectCondition>
-Iterator connect(basic_socket<Protocol, SocketService>& s,
- Iterator begin, ConnectCondition connect_condition);
-
-/// Establishes a socket connection by trying each endpoint in a sequence.
-/**
- * This function attempts to connect a socket to one of a sequence of
- * endpoints. It does this by repeated calls to the socket's @c connect member
- * function, once for each endpoint in the sequence, until a connection is
- * successfully established.
- *
- * @param s The socket to be connected. If the socket is already open, it will
- * be closed.
- *
- * @param begin An iterator pointing to the start of a sequence of endpoints.
- *
- * @param connect_condition A function object that is called prior to each
- * connection attempt. The signature of the function object must be:
- * @code Iterator connect_condition(
- * const asio::error_code& ec,
- * Iterator next); @endcode
- * The @c ec parameter contains the result from the most recent connect
- * operation. Before the first connection attempt, @c ec is always set to
- * indicate success. The @c next parameter is an iterator pointing to the next
- * endpoint to be tried. The function object should return the next iterator,
- * but is permitted to return a different iterator so that endpoints may be
- * skipped. The implementation guarantees that the function object will never
- * be called with the end iterator.
- *
- * @param ec Set to indicate what error occurred, if any. If the sequence is
- * empty, set to asio::error::not_found. Otherwise, contains the error
- * from the last connection attempt.
- *
- * @returns On success, an iterator denoting the successfully connected
- * endpoint. Otherwise, the end iterator.
- *
- * @note This overload assumes that a default constructed object of type @c
- * Iterator represents the end of the sequence. This is a valid assumption for
- * iterator types such as @c asio::ip::tcp::resolver::iterator.
- *
- * @par Example
- * The following connect condition function object can be used to output
- * information about the individual connection attempts:
- * @code struct my_connect_condition
- * {
- * template <typename Iterator>
- * Iterator operator()(
- * const asio::error_code& ec,
- * Iterator next)
- * {
- * if (ec) std::cout << "Error: " << ec.message() << std::endl;
- * std::cout << "Trying: " << next->endpoint() << std::endl;
- * return next;
- * }
- * }; @endcode
- * It would be used with the asio::connect function as follows:
- * @code tcp::resolver r(io_service);
- * tcp::resolver::query q("host", "service");
- * tcp::socket s(io_service);
- * asio::error_code ec;
- * tcp::resolver::iterator i = asio::connect(
- * s, r.resolve(q), my_connect_condition(), ec);
- * if (ec)
- * {
- * // An error occurred.
- * }
- * else
- * {
- * std::cout << "Connected to: " << i->endpoint() << std::endl;
- * } @endcode
- */
-template <typename Protocol, typename SocketService,
- typename Iterator, typename ConnectCondition>
-Iterator connect(basic_socket<Protocol, SocketService>& s, Iterator begin,
- ConnectCondition connect_condition, asio::error_code& ec);
-
-/// Establishes a socket connection by trying each endpoint in a sequence.
-/**
- * This function attempts to connect a socket to one of a sequence of
- * endpoints. It does this by repeated calls to the socket's @c connect member
- * function, once for each endpoint in the sequence, until a connection is
- * successfully established.
- *
- * @param s The socket to be connected. If the socket is already open, it will
- * be closed.
- *
- * @param begin An iterator pointing to the start of a sequence of endpoints.
- *
- * @param end An iterator pointing to the end of a sequence of endpoints.
- *
- * @param connect_condition A function object that is called prior to each
- * connection attempt. The signature of the function object must be:
- * @code Iterator connect_condition(
- * const asio::error_code& ec,
- * Iterator next); @endcode
- * The @c ec parameter contains the result from the most recent connect
- * operation. Before the first connection attempt, @c ec is always set to
- * indicate success. The @c next parameter is an iterator pointing to the next
- * endpoint to be tried. The function object should return the next iterator,
- * but is permitted to return a different iterator so that endpoints may be
- * skipped. The implementation guarantees that the function object will never
- * be called with the end iterator.
- *
- * @returns On success, an iterator denoting the successfully connected
- * endpoint. Otherwise, the end iterator.
- *
- * @throws asio::system_error Thrown on failure. If the sequence is
- * empty, the associated @c error_code is asio::error::not_found.
- * Otherwise, contains the error from the last connection attempt.
- *
- * @par Example
- * The following connect condition function object can be used to output
- * information about the individual connection attempts:
- * @code struct my_connect_condition
- * {
- * template <typename Iterator>
- * Iterator operator()(
- * const asio::error_code& ec,
- * Iterator next)
- * {
- * if (ec) std::cout << "Error: " << ec.message() << std::endl;
- * std::cout << "Trying: " << next->endpoint() << std::endl;
- * return next;
- * }
- * }; @endcode
- * It would be used with the asio::connect function as follows:
- * @code tcp::resolver r(io_service);
- * tcp::resolver::query q("host", "service");
- * tcp::resolver::iterator i = r.resolve(q), end;
- * tcp::socket s(io_service);
- * i = asio::connect(s, i, end, my_connect_condition());
- * std::cout << "Connected to: " << i->endpoint() << std::endl; @endcode
- */
-template <typename Protocol, typename SocketService,
- typename Iterator, typename ConnectCondition>
-Iterator connect(basic_socket<Protocol, SocketService>& s, Iterator begin,
- Iterator end, ConnectCondition connect_condition);
-
-/// Establishes a socket connection by trying each endpoint in a sequence.
-/**
- * This function attempts to connect a socket to one of a sequence of
- * endpoints. It does this by repeated calls to the socket's @c connect member
- * function, once for each endpoint in the sequence, until a connection is
- * successfully established.
- *
- * @param s The socket to be connected. If the socket is already open, it will
- * be closed.
- *
- * @param begin An iterator pointing to the start of a sequence of endpoints.
- *
- * @param end An iterator pointing to the end of a sequence of endpoints.
- *
- * @param connect_condition A function object that is called prior to each
- * connection attempt. The signature of the function object must be:
- * @code Iterator connect_condition(
- * const asio::error_code& ec,
- * Iterator next); @endcode
- * The @c ec parameter contains the result from the most recent connect
- * operation. Before the first connection attempt, @c ec is always set to
- * indicate success. The @c next parameter is an iterator pointing to the next
- * endpoint to be tried. The function object should return the next iterator,
- * but is permitted to return a different iterator so that endpoints may be
- * skipped. The implementation guarantees that the function object will never
- * be called with the end iterator.
- *
- * @param ec Set to indicate what error occurred, if any. If the sequence is
- * empty, set to asio::error::not_found. Otherwise, contains the error
- * from the last connection attempt.
- *
- * @returns On success, an iterator denoting the successfully connected
- * endpoint. Otherwise, the end iterator.
- *
- * @par Example
- * The following connect condition function object can be used to output
- * information about the individual connection attempts:
- * @code struct my_connect_condition
- * {
- * template <typename Iterator>
- * Iterator operator()(
- * const asio::error_code& ec,
- * Iterator next)
- * {
- * if (ec) std::cout << "Error: " << ec.message() << std::endl;
- * std::cout << "Trying: " << next->endpoint() << std::endl;
- * return next;
- * }
- * }; @endcode
- * It would be used with the asio::connect function as follows:
- * @code tcp::resolver r(io_service);
- * tcp::resolver::query q("host", "service");
- * tcp::resolver::iterator i = r.resolve(q), end;
- * tcp::socket s(io_service);
- * asio::error_code ec;
- * i = asio::connect(s, i, end, my_connect_condition(), ec);
- * if (ec)
- * {
- * // An error occurred.
- * }
- * else
- * {
- * std::cout << "Connected to: " << i->endpoint() << std::endl;
- * } @endcode
- */
-template <typename Protocol, typename SocketService,
- typename Iterator, typename ConnectCondition>
-Iterator connect(basic_socket<Protocol, SocketService>& s,
- Iterator begin, Iterator end, ConnectCondition connect_condition,
- asio::error_code& ec);
-
-/*@}*/
-
-/**
- * @defgroup async_connect asio::async_connect
- *
- * @brief Asynchronously establishes a socket connection by trying each
- * endpoint in a sequence.
- */
-/*@{*/
-
-/// Asynchronously establishes a socket connection by trying each endpoint in a
-/// sequence.
-/**
- * This function attempts to connect a socket to one of a sequence of
- * endpoints. It does this by repeated calls to the socket's @c async_connect
- * member function, once for each endpoint in the sequence, until a connection
- * is successfully established.
- *
- * @param s The socket to be connected. If the socket is already open, it will
- * be closed.
- *
- * @param begin An iterator pointing to the start of a sequence of endpoints.
- *
- * @param handler The handler to be called when the connect operation
- * completes. Copies will be made of the handler as required. The function
- * signature of the handler must be:
- * @code void handler(
- * // Result of operation. if the sequence is empty, set to
- * // asio::error::not_found. Otherwise, contains the
- * // error from the last connection attempt.
- * const asio::error_code& error,
- *
- * // On success, an iterator denoting the successfully
- * // connected endpoint. Otherwise, the end iterator.
- * Iterator iterator
- * ); @endcode
- * Regardless of whether the asynchronous operation completes immediately or
- * not, the handler will not be invoked from within this function. Invocation
- * of the handler will be performed in a manner equivalent to using
- * asio::io_service::post().
- *
- * @note This overload assumes that a default constructed object of type @c
- * Iterator represents the end of the sequence. This is a valid assumption for
- * iterator types such as @c asio::ip::tcp::resolver::iterator.
- *
- * @par Example
- * @code tcp::resolver r(io_service);
- * tcp::resolver::query q("host", "service");
- * tcp::socket s(io_service);
- *
- * // ...
- *
- * r.async_resolve(q, resolve_handler);
- *
- * // ...
- *
- * void resolve_handler(
- * const asio::error_code& ec,
- * tcp::resolver::iterator i)
- * {
- * if (!ec)
- * {
- * asio::async_connect(s, i, connect_handler);
- * }
- * }
- *
- * // ...
- *
- * void connect_handler(
- * const asio::error_code& ec,
- * tcp::resolver::iterator i)
- * {
- * // ...
- * } @endcode
- */
-template <typename Protocol, typename SocketService,
- typename Iterator, typename ComposedConnectHandler>
-ASIO_INITFN_RESULT_TYPE(ComposedConnectHandler,
- void (asio::error_code, Iterator))
-async_connect(basic_socket<Protocol, SocketService>& s,
- Iterator begin, ASIO_MOVE_ARG(ComposedConnectHandler) handler);
-
-/// Asynchronously establishes a socket connection by trying each endpoint in a
-/// sequence.
-/**
- * This function attempts to connect a socket to one of a sequence of
- * endpoints. It does this by repeated calls to the socket's @c async_connect
- * member function, once for each endpoint in the sequence, until a connection
- * is successfully established.
- *
- * @param s The socket to be connected. If the socket is already open, it will
- * be closed.
- *
- * @param begin An iterator pointing to the start of a sequence of endpoints.
- *
- * @param end An iterator pointing to the end of a sequence of endpoints.
- *
- * @param handler The handler to be called when the connect operation
- * completes. Copies will be made of the handler as required. The function
- * signature of the handler must be:
- * @code void handler(
- * // Result of operation. if the sequence is empty, set to
- * // asio::error::not_found. Otherwise, contains the
- * // error from the last connection attempt.
- * const asio::error_code& error,
- *
- * // On success, an iterator denoting the successfully
- * // connected endpoint. Otherwise, the end iterator.
- * Iterator iterator
- * ); @endcode
- * Regardless of whether the asynchronous operation completes immediately or
- * not, the handler will not be invoked from within this function. Invocation
- * of the handler will be performed in a manner equivalent to using
- * asio::io_service::post().
- *
- * @par Example
- * @code tcp::resolver r(io_service);
- * tcp::resolver::query q("host", "service");
- * tcp::socket s(io_service);
- *
- * // ...
- *
- * r.async_resolve(q, resolve_handler);
- *
- * // ...
- *
- * void resolve_handler(
- * const asio::error_code& ec,
- * tcp::resolver::iterator i)
- * {
- * if (!ec)
- * {
- * tcp::resolver::iterator end;
- * asio::async_connect(s, i, end, connect_handler);
- * }
- * }
- *
- * // ...
- *
- * void connect_handler(
- * const asio::error_code& ec,
- * tcp::resolver::iterator i)
- * {
- * // ...
- * } @endcode
- */
-template <typename Protocol, typename SocketService,
- typename Iterator, typename ComposedConnectHandler>
-ASIO_INITFN_RESULT_TYPE(ComposedConnectHandler,
- void (asio::error_code, Iterator))
-async_connect(basic_socket<Protocol, SocketService>& s,
- Iterator begin, Iterator end,
- ASIO_MOVE_ARG(ComposedConnectHandler) handler);
-
-/// Asynchronously establishes a socket connection by trying each endpoint in a
-/// sequence.
-/**
- * This function attempts to connect a socket to one of a sequence of
- * endpoints. It does this by repeated calls to the socket's @c async_connect
- * member function, once for each endpoint in the sequence, until a connection
- * is successfully established.
- *
- * @param s The socket to be connected. If the socket is already open, it will
- * be closed.
- *
- * @param begin An iterator pointing to the start of a sequence of endpoints.
- *
- * @param connect_condition A function object that is called prior to each
- * connection attempt. The signature of the function object must be:
- * @code Iterator connect_condition(
- * const asio::error_code& ec,
- * Iterator next); @endcode
- * The @c ec parameter contains the result from the most recent connect
- * operation. Before the first connection attempt, @c ec is always set to
- * indicate success. The @c next parameter is an iterator pointing to the next
- * endpoint to be tried. The function object should return the next iterator,
- * but is permitted to return a different iterator so that endpoints may be
- * skipped. The implementation guarantees that the function object will never
- * be called with the end iterator.
- *
- * @param handler The handler to be called when the connect operation
- * completes. Copies will be made of the handler as required. The function
- * signature of the handler must be:
- * @code void handler(
- * // Result of operation. if the sequence is empty, set to
- * // asio::error::not_found. Otherwise, contains the
- * // error from the last connection attempt.
- * const asio::error_code& error,
- *
- * // On success, an iterator denoting the successfully
- * // connected endpoint. Otherwise, the end iterator.
- * Iterator iterator
- * ); @endcode
- * Regardless of whether the asynchronous operation completes immediately or
- * not, the handler will not be invoked from within this function. Invocation
- * of the handler will be performed in a manner equivalent to using
- * asio::io_service::post().
- *
- * @note This overload assumes that a default constructed object of type @c
- * Iterator represents the end of the sequence. This is a valid assumption for
- * iterator types such as @c asio::ip::tcp::resolver::iterator.
- *
- * @par Example
- * The following connect condition function object can be used to output
- * information about the individual connection attempts:
- * @code struct my_connect_condition
- * {
- * template <typename Iterator>
- * Iterator operator()(
- * const asio::error_code& ec,
- * Iterator next)
- * {
- * if (ec) std::cout << "Error: " << ec.message() << std::endl;
- * std::cout << "Trying: " << next->endpoint() << std::endl;
- * return next;
- * }
- * }; @endcode
- * It would be used with the asio::connect function as follows:
- * @code tcp::resolver r(io_service);
- * tcp::resolver::query q("host", "service");
- * tcp::socket s(io_service);
- *
- * // ...
- *
- * r.async_resolve(q, resolve_handler);
- *
- * // ...
- *
- * void resolve_handler(
- * const asio::error_code& ec,
- * tcp::resolver::iterator i)
- * {
- * if (!ec)
- * {
- * asio::async_connect(s, i,
- * my_connect_condition(),
- * connect_handler);
- * }
- * }
- *
- * // ...
- *
- * void connect_handler(
- * const asio::error_code& ec,
- * tcp::resolver::iterator i)
- * {
- * if (ec)
- * {
- * // An error occurred.
- * }
- * else
- * {
- * std::cout << "Connected to: " << i->endpoint() << std::endl;
- * }
- * } @endcode
- */
-template <typename Protocol, typename SocketService, typename Iterator,
- typename ConnectCondition, typename ComposedConnectHandler>
-ASIO_INITFN_RESULT_TYPE(ComposedConnectHandler,
- void (asio::error_code, Iterator))
-async_connect(basic_socket<Protocol, SocketService>& s, Iterator begin,
- ConnectCondition connect_condition,
- ASIO_MOVE_ARG(ComposedConnectHandler) handler);
-
-/// Asynchronously establishes a socket connection by trying each endpoint in a
-/// sequence.
-/**
- * This function attempts to connect a socket to one of a sequence of
- * endpoints. It does this by repeated calls to the socket's @c async_connect
- * member function, once for each endpoint in the sequence, until a connection
- * is successfully established.
- *
- * @param s The socket to be connected. If the socket is already open, it will
- * be closed.
- *
- * @param begin An iterator pointing to the start of a sequence of endpoints.
- *
- * @param end An iterator pointing to the end of a sequence of endpoints.
- *
- * @param connect_condition A function object that is called prior to each
- * connection attempt. The signature of the function object must be:
- * @code Iterator connect_condition(
- * const asio::error_code& ec,
- * Iterator next); @endcode
- * The @c ec parameter contains the result from the most recent connect
- * operation. Before the first connection attempt, @c ec is always set to
- * indicate success. The @c next parameter is an iterator pointing to the next
- * endpoint to be tried. The function object should return the next iterator,
- * but is permitted to return a different iterator so that endpoints may be
- * skipped. The implementation guarantees that the function object will never
- * be called with the end iterator.
- *
- * @param handler The handler to be called when the connect operation
- * completes. Copies will be made of the handler as required. The function
- * signature of the handler must be:
- * @code void handler(
- * // Result of operation. if the sequence is empty, set to
- * // asio::error::not_found. Otherwise, contains the
- * // error from the last connection attempt.
- * const asio::error_code& error,
- *
- * // On success, an iterator denoting the successfully
- * // connected endpoint. Otherwise, the end iterator.
- * Iterator iterator
- * ); @endcode
- * Regardless of whether the asynchronous operation completes immediately or
- * not, the handler will not be invoked from within this function. Invocation
- * of the handler will be performed in a manner equivalent to using
- * asio::io_service::post().
- *
- * @par Example
- * The following connect condition function object can be used to output
- * information about the individual connection attempts:
- * @code struct my_connect_condition
- * {
- * template <typename Iterator>
- * Iterator operator()(
- * const asio::error_code& ec,
- * Iterator next)
- * {
- * if (ec) std::cout << "Error: " << ec.message() << std::endl;
- * std::cout << "Trying: " << next->endpoint() << std::endl;
- * return next;
- * }
- * }; @endcode
- * It would be used with the asio::connect function as follows:
- * @code tcp::resolver r(io_service);
- * tcp::resolver::query q("host", "service");
- * tcp::socket s(io_service);
- *
- * // ...
- *
- * r.async_resolve(q, resolve_handler);
- *
- * // ...
- *
- * void resolve_handler(
- * const asio::error_code& ec,
- * tcp::resolver::iterator i)
- * {
- * if (!ec)
- * {
- * tcp::resolver::iterator end;
- * asio::async_connect(s, i, end,
- * my_connect_condition(),
- * connect_handler);
- * }
- * }
- *
- * // ...
- *
- * void connect_handler(
- * const asio::error_code& ec,
- * tcp::resolver::iterator i)
- * {
- * if (ec)
- * {
- * // An error occurred.
- * }
- * else
- * {
- * std::cout << "Connected to: " << i->endpoint() << std::endl;
- * }
- * } @endcode
- */
-template <typename Protocol, typename SocketService, typename Iterator,
- typename ConnectCondition, typename ComposedConnectHandler>
-ASIO_INITFN_RESULT_TYPE(ComposedConnectHandler,
- void (asio::error_code, Iterator))
-async_connect(basic_socket<Protocol, SocketService>& s,
- Iterator begin, Iterator end, ConnectCondition connect_condition,
- ASIO_MOVE_ARG(ComposedConnectHandler) handler);
-
-/*@}*/
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#include "asio/impl/connect.hpp"
-
-#endif
http://git-wip-us.apache.org/repos/asf/hadoop/blob/ea310d75/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/coroutine.hpp
----------------------------------------------------------------------
diff --git a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/coroutine.hpp b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/coroutine.hpp
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--- a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/coroutine.hpp
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@@ -1,328 +0,0 @@
-//
-// coroutine.hpp
-// ~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2014 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// 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 ASIO_COROUTINE_HPP
-#define ASIO_COROUTINE_HPP
-
-namespace asio {
-namespace detail {
-
-class coroutine_ref;
-
-} // namespace detail
-
-/// Provides support for implementing stackless coroutines.
-/**
- * The @c coroutine class may be used to implement stackless coroutines. The
- * class itself is used to store the current state of the coroutine.
- *
- * Coroutines are copy-constructible and assignable, and the space overhead is
- * a single int. They can be used as a base class:
- *
- * @code class session : coroutine
- * {
- * ...
- * }; @endcode
- *
- * or as a data member:
- *
- * @code class session
- * {
- * ...
- * coroutine coro_;
- * }; @endcode
- *
- * or even bound in as a function argument using lambdas or @c bind(). The
- * important thing is that as the application maintains a copy of the object
- * for as long as the coroutine must be kept alive.
- *
- * @par Pseudo-keywords
- *
- * A coroutine is used in conjunction with certain "pseudo-keywords", which
- * are implemented as macros. These macros are defined by a header file:
- *
- * @code #include <asio/yield.hpp>@endcode
- *
- * and may conversely be undefined as follows:
- *
- * @code #include <asio/unyield.hpp>@endcode
- *
- * <b>reenter</b>
- *
- * The @c reenter macro is used to define the body of a coroutine. It takes a
- * single argument: a pointer or reference to a coroutine object. For example,
- * if the base class is a coroutine object you may write:
- *
- * @code reenter (this)
- * {
- * ... coroutine body ...
- * } @endcode
- *
- * and if a data member or other variable you can write:
- *
- * @code reenter (coro_)
- * {
- * ... coroutine body ...
- * } @endcode
- *
- * When @c reenter is executed at runtime, control jumps to the location of the
- * last @c yield or @c fork.
- *
- * The coroutine body may also be a single statement, such as:
- *
- * @code reenter (this) for (;;)
- * {
- * ...
- * } @endcode
- *
- * @b Limitation: The @c reenter macro is implemented using a switch. This
- * means that you must take care when using local variables within the
- * coroutine body. The local variable is not allowed in a position where
- * reentering the coroutine could bypass the variable definition.
- *
- * <b>yield <em>statement</em></b>
- *
- * This form of the @c yield keyword is often used with asynchronous operations:
- *
- * @code yield socket_->async_read_some(buffer(*buffer_), *this); @endcode
- *
- * This divides into four logical steps:
- *
- * @li @c yield saves the current state of the coroutine.
- * @li The statement initiates the asynchronous operation.
- * @li The resume point is defined immediately following the statement.
- * @li Control is transferred to the end of the coroutine body.
- *
- * When the asynchronous operation completes, the function object is invoked
- * and @c reenter causes control to transfer to the resume point. It is
- * important to remember to carry the coroutine state forward with the
- * asynchronous operation. In the above snippet, the current class is a
- * function object object with a coroutine object as base class or data member.
- *
- * The statement may also be a compound statement, and this permits us to
- * define local variables with limited scope:
- *
- * @code yield
- * {
- * mutable_buffers_1 b = buffer(*buffer_);
- * socket_->async_read_some(b, *this);
- * } @endcode
- *
- * <b>yield return <em>expression</em> ;</b>
- *
- * This form of @c yield is often used in generators or coroutine-based parsers.
- * For example, the function object:
- *
- * @code struct interleave : coroutine
- * {
- * istream& is1;
- * istream& is2;
- * char operator()(char c)
- * {
- * reenter (this) for (;;)
- * {
- * yield return is1.get();
- * yield return is2.get();
- * }
- * }
- * }; @endcode
- *
- * defines a trivial coroutine that interleaves the characters from two input
- * streams.
- *
- * This type of @c yield divides into three logical steps:
- *
- * @li @c yield saves the current state of the coroutine.
- * @li The resume point is defined immediately following the semicolon.
- * @li The value of the expression is returned from the function.
- *
- * <b>yield ;</b>
- *
- * This form of @c yield is equivalent to the following steps:
- *
- * @li @c yield saves the current state of the coroutine.
- * @li The resume point is defined immediately following the semicolon.
- * @li Control is transferred to the end of the coroutine body.
- *
- * This form might be applied when coroutines are used for cooperative
- * threading and scheduling is explicitly managed. For example:
- *
- * @code struct task : coroutine
- * {
- * ...
- * void operator()()
- * {
- * reenter (this)
- * {
- * while (... not finished ...)
- * {
- * ... do something ...
- * yield;
- * ... do some more ...
- * yield;
- * }
- * }
- * }
- * ...
- * };
- * ...
- * task t1, t2;
- * for (;;)
- * {
- * t1();
- * t2();
- * } @endcode
- *
- * <b>yield break ;</b>
- *
- * The final form of @c yield is used to explicitly terminate the coroutine.
- * This form is comprised of two steps:
- *
- * @li @c yield sets the coroutine state to indicate termination.
- * @li Control is transferred to the end of the coroutine body.
- *
- * Once terminated, calls to is_complete() return true and the coroutine cannot
- * be reentered.
- *
- * Note that a coroutine may also be implicitly terminated if the coroutine
- * body is exited without a yield, e.g. by return, throw or by running to the
- * end of the body.
- *
- * <b>fork <em>statement</em></b>
- *
- * The @c fork pseudo-keyword is used when "forking" a coroutine, i.e. splitting
- * it into two (or more) copies. One use of @c fork is in a server, where a new
- * coroutine is created to handle each client connection:
- *
- * @code reenter (this)
- * {
- * do
- * {
- * socket_.reset(new tcp::socket(io_service_));
- * yield acceptor->async_accept(*socket_, *this);
- * fork server(*this)();
- * } while (is_parent());
- * ... client-specific handling follows ...
- * } @endcode
- *
- * The logical steps involved in a @c fork are:
- *
- * @li @c fork saves the current state of the coroutine.
- * @li The statement creates a copy of the coroutine and either executes it
- * immediately or schedules it for later execution.
- * @li The resume point is defined immediately following the semicolon.
- * @li For the "parent", control immediately continues from the next line.
- *
- * The functions is_parent() and is_child() can be used to differentiate
- * between parent and child. You would use these functions to alter subsequent
- * control flow.
- *
- * Note that @c fork doesn't do the actual forking by itself. It is the
- * application's responsibility to create a clone of the coroutine and call it.
- * The clone can be called immediately, as above, or scheduled for delayed
- * execution using something like io_service::post().
- *
- * @par Alternate macro names
- *
- * If preferred, an application can use macro names that follow a more typical
- * naming convention, rather than the pseudo-keywords. These are:
- *
- * @li @c ASIO_CORO_REENTER instead of @c reenter
- * @li @c ASIO_CORO_YIELD instead of @c yield
- * @li @c ASIO_CORO_FORK instead of @c fork
- */
-class coroutine
-{
-public:
- /// Constructs a coroutine in its initial state.
- coroutine() : value_(0) {}
-
- /// Returns true if the coroutine is the child of a fork.
- bool is_child() const { return value_ < 0; }
-
- /// Returns true if the coroutine is the parent of a fork.
- bool is_parent() const { return !is_child(); }
-
- /// Returns true if the coroutine has reached its terminal state.
- bool is_complete() const { return value_ == -1; }
-
-private:
- friend class detail::coroutine_ref;
- int value_;
-};
-
-
-namespace detail {
-
-class coroutine_ref
-{
-public:
- coroutine_ref(coroutine& c) : value_(c.value_), modified_(false) {}
- coroutine_ref(coroutine* c) : value_(c->value_), modified_(false) {}
- ~coroutine_ref() { if (!modified_) value_ = -1; }
- operator int() const { return value_; }
- int& operator=(int v) { modified_ = true; return value_ = v; }
-private:
- void operator=(const coroutine_ref&);
- int& value_;
- bool modified_;
-};
-
-} // namespace detail
-} // namespace asio
-
-#define ASIO_CORO_REENTER(c) \
- switch (::asio::detail::coroutine_ref _coro_value = c) \
- case -1: if (_coro_value) \
- { \
- goto terminate_coroutine; \
- terminate_coroutine: \
- _coro_value = -1; \
- goto bail_out_of_coroutine; \
- bail_out_of_coroutine: \
- break; \
- } \
- else case 0:
-
-#define ASIO_CORO_YIELD_IMPL(n) \
- for (_coro_value = (n);;) \
- if (_coro_value == 0) \
- { \
- case (n): ; \
- break; \
- } \
- else \
- switch (_coro_value ? 0 : 1) \
- for (;;) \
- case -1: if (_coro_value) \
- goto terminate_coroutine; \
- else for (;;) \
- case 1: if (_coro_value) \
- goto bail_out_of_coroutine; \
- else case 0:
-
-#define ASIO_CORO_FORK_IMPL(n) \
- for (_coro_value = -(n);; _coro_value = (n)) \
- if (_coro_value == (n)) \
- { \
- case -(n): ; \
- break; \
- } \
- else
-
-#if defined(_MSC_VER)
-# define ASIO_CORO_YIELD ASIO_CORO_YIELD_IMPL(__COUNTER__ + 1)
-# define ASIO_CORO_FORK ASIO_CORO_FORK_IMPL(__COUNTER__ + 1)
-#else // defined(_MSC_VER)
-# define ASIO_CORO_YIELD ASIO_CORO_YIELD_IMPL(__LINE__)
-# define ASIO_CORO_FORK ASIO_CORO_FORK_IMPL(__LINE__)
-#endif // defined(_MSC_VER)
-
-#endif // ASIO_COROUTINE_HPP