Added boost header

test/external/boost/asio/detail/win_iocp_handle_service.hpp

@@ -0,0 +1,323 @@
+//
+// detail/win_iocp_handle_service.hpp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2011 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+// Copyright (c) 2008 Rep Invariant Systems, Inc. (info@repinvariant.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 BOOST_ASIO_DETAIL_WIN_IOCP_HANDLE_SERVICE_HPP
+#define BOOST_ASIO_DETAIL_WIN_IOCP_HANDLE_SERVICE_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include <boost/asio/detail/config.hpp>
+
+#if defined(BOOST_ASIO_HAS_IOCP)
+
+#include <boost/cstdint.hpp>
+#include <boost/asio/error.hpp>
+#include <boost/asio/io_service.hpp>
+#include <boost/asio/detail/buffer_sequence_adapter.hpp>
+#include <boost/asio/detail/handler_alloc_helpers.hpp>
+#include <boost/asio/detail/mutex.hpp>
+#include <boost/asio/detail/operation.hpp>
+#include <boost/asio/detail/win_iocp_handle_read_op.hpp>
+#include <boost/asio/detail/win_iocp_handle_write_op.hpp>
+#include <boost/asio/detail/win_iocp_io_service.hpp>
+
+#include <boost/asio/detail/push_options.hpp>
+
+namespace boost {
+namespace asio {
+namespace detail {
+
+class win_iocp_handle_service
+{
+public:
+  // The native type of a stream handle.
+  typedef HANDLE native_handle_type;
+
+  // The implementation type of the stream handle.
+  class implementation_type
+  {
+  public:
+    // Default constructor.
+    implementation_type()
+      : handle_(INVALID_HANDLE_VALUE),
+        safe_cancellation_thread_id_(0),
+        next_(0),
+        prev_(0)
+    {
+    }
+
+  private:
+    // Only this service will have access to the internal values.
+    friend class win_iocp_handle_service;
+
+    // The native stream handle representation.
+    native_handle_type handle_;
+
+    // The ID of the thread from which it is safe to cancel asynchronous
+    // operations. 0 means no asynchronous operations have been started yet.
+    // ~0 means asynchronous operations have been started from more than one
+    // thread, and cancellation is not supported for the handle.
+    DWORD safe_cancellation_thread_id_;
+
+    // Pointers to adjacent handle implementations in linked list.
+    implementation_type* next_;
+    implementation_type* prev_;
+  };
+
+  BOOST_ASIO_DECL win_iocp_handle_service(boost::asio::io_service& io_service);
+
+  // Destroy all user-defined handler objects owned by the service.
+  BOOST_ASIO_DECL void shutdown_service();
+
+  // Construct a new handle implementation.
+  BOOST_ASIO_DECL void construct(implementation_type& impl);
+
+  // Move-construct a new handle implementation.
+  BOOST_ASIO_DECL void move_construct(implementation_type& impl,
+      implementation_type& other_impl);
+
+  // Move-assign from another handle implementation.
+  BOOST_ASIO_DECL void move_assign(implementation_type& impl,
+      win_iocp_handle_service& other_service,
+      implementation_type& other_impl);
+
+  // Destroy a handle implementation.
+  BOOST_ASIO_DECL void destroy(implementation_type& impl);
+
+  // Assign a native handle to a handle implementation.
+  BOOST_ASIO_DECL boost::system::error_code assign(implementation_type& impl,
+      const native_handle_type& handle, boost::system::error_code& ec);
+
+  // Determine whether the handle is open.
+  bool is_open(const implementation_type& impl) const
+  {
+    return impl.handle_ != INVALID_HANDLE_VALUE;
+  }
+
+  // Destroy a handle implementation.
+  BOOST_ASIO_DECL boost::system::error_code close(implementation_type& impl,
+      boost::system::error_code& ec);
+
+  // Get the native handle representation.
+  native_handle_type native_handle(const implementation_type& impl) const
+  {
+    return impl.handle_;
+  }
+
+  // Cancel all operations associated with the handle.
+  BOOST_ASIO_DECL boost::system::error_code cancel(implementation_type& impl,
+      boost::system::error_code& ec);
+
+  // Write the given data. Returns the number of bytes written.
+  template <typename ConstBufferSequence>
+  size_t write_some(implementation_type& impl,
+      const ConstBufferSequence& buffers, boost::system::error_code& ec)
+  {
+    return write_some_at(impl, 0, buffers, ec);
+  }
+
+  // Write the given data at the specified offset. Returns the number of bytes
+  // written.
+  template <typename ConstBufferSequence>
+  size_t write_some_at(implementation_type& impl, boost::uint64_t offset,
+      const ConstBufferSequence& buffers, boost::system::error_code& ec)
+  {
+    boost::asio::const_buffer buffer =
+      buffer_sequence_adapter<boost::asio::const_buffer,
+        ConstBufferSequence>::first(buffers);
+
+    return do_write(impl, offset, buffer, ec);
+  }
+
+  // Start an asynchronous write. The data being written must be valid for the
+  // lifetime of the asynchronous operation.
+  template <typename ConstBufferSequence, typename Handler>
+  void async_write_some(implementation_type& impl,
+      const ConstBufferSequence& buffers, Handler handler)
+  {
+    // Allocate and construct an operation to wrap the handler.
+    typedef win_iocp_handle_write_op<ConstBufferSequence, Handler> op;
+    typename op::ptr p = { boost::addressof(handler),
+      boost_asio_handler_alloc_helpers::allocate(
+        sizeof(op), handler), 0 };
+    p.p = new (p.v) op(buffers, handler);
+
+    BOOST_ASIO_HANDLER_CREATION((p.p, "handle", &impl, "async_write_some"));
+
+    start_write_op(impl, 0,
+        buffer_sequence_adapter<boost::asio::const_buffer,
+          ConstBufferSequence>::first(buffers), p.p);
+    p.v = p.p = 0;
+  }
+
+  // Start an asynchronous write at a specified offset. The data being written
+  // must be valid for the lifetime of the asynchronous operation.
+  template <typename ConstBufferSequence, typename Handler>
+  void async_write_some_at(implementation_type& impl, boost::uint64_t offset,
+      const ConstBufferSequence& buffers, Handler handler)
+  {
+    // Allocate and construct an operation to wrap the handler.
+    typedef win_iocp_handle_write_op<ConstBufferSequence, Handler> op;
+    typename op::ptr p = { boost::addressof(handler),
+      boost_asio_handler_alloc_helpers::allocate(
+        sizeof(op), handler), 0 };
+    p.p = new (p.v) op(buffers, handler);
+
+    BOOST_ASIO_HANDLER_CREATION((p.p, "handle", &impl, "async_write_some_at"));
+
+    start_write_op(impl, offset,
+        buffer_sequence_adapter<boost::asio::const_buffer,
+          ConstBufferSequence>::first(buffers), p.p);
+    p.v = p.p = 0;
+  }
+
+  // Read some data. Returns the number of bytes received.
+  template <typename MutableBufferSequence>
+  size_t read_some(implementation_type& impl,
+      const MutableBufferSequence& buffers, boost::system::error_code& ec)
+  {
+    return read_some_at(impl, 0, buffers, ec);
+  }
+
+  // Read some data at a specified offset. Returns the number of bytes received.
+  template <typename MutableBufferSequence>
+  size_t read_some_at(implementation_type& impl, boost::uint64_t offset,
+      const MutableBufferSequence& buffers, boost::system::error_code& ec)
+  {
+    boost::asio::mutable_buffer buffer =
+      buffer_sequence_adapter<boost::asio::mutable_buffer,
+        MutableBufferSequence>::first(buffers);
+
+    return do_read(impl, offset, buffer, ec);
+  }
+
+  // Start an asynchronous read. The buffer for the data being received must be
+  // valid for the lifetime of the asynchronous operation.
+  template <typename MutableBufferSequence, typename Handler>
+  void async_read_some(implementation_type& impl,
+      const MutableBufferSequence& buffers, Handler handler)
+  {
+    // Allocate and construct an operation to wrap the handler.
+    typedef win_iocp_handle_read_op<MutableBufferSequence, Handler> op;
+    typename op::ptr p = { boost::addressof(handler),
+      boost_asio_handler_alloc_helpers::allocate(
+        sizeof(op), handler), 0 };
+    p.p = new (p.v) op(buffers, handler);
+
+    BOOST_ASIO_HANDLER_CREATION((p.p, "handle", &impl, "async_read_some"));
+
+    start_read_op(impl, 0,
+        buffer_sequence_adapter<boost::asio::mutable_buffer,
+          MutableBufferSequence>::first(buffers), p.p);
+    p.v = p.p = 0;
+  }
+
+  // Start an asynchronous read at a specified offset. The buffer for the data
+  // being received must be valid for the lifetime of the asynchronous
+  // operation.
+  template <typename MutableBufferSequence, typename Handler>
+  void async_read_some_at(implementation_type& impl, boost::uint64_t offset,
+      const MutableBufferSequence& buffers, Handler handler)
+  {
+    // Allocate and construct an operation to wrap the handler.
+    typedef win_iocp_handle_read_op<MutableBufferSequence, Handler> op;
+    typename op::ptr p = { boost::addressof(handler),
+      boost_asio_handler_alloc_helpers::allocate(
+        sizeof(op), handler), 0 };
+    p.p = new (p.v) op(buffers, handler);
+
+    BOOST_ASIO_HANDLER_CREATION((p.p, "handle", &impl, "async_read_some_at"));
+
+    start_read_op(impl, offset,
+        buffer_sequence_adapter<boost::asio::mutable_buffer,
+          MutableBufferSequence>::first(buffers), p.p);
+    p.v = p.p = 0;
+  }
+
+private:
+  // Prevent the use of the null_buffers type with this service.
+  size_t write_some(implementation_type& impl,
+      const null_buffers& buffers, boost::system::error_code& ec);
+  size_t write_some_at(implementation_type& impl, boost::uint64_t offset,
+      const null_buffers& buffers, boost::system::error_code& ec);
+  template <typename Handler>
+  void async_write_some(implementation_type& impl,
+      const null_buffers& buffers, Handler handler);
+  template <typename Handler>
+  void async_write_some_at(implementation_type& impl, boost::uint64_t offset,
+      const null_buffers& buffers, Handler handler);
+  size_t read_some(implementation_type& impl,
+      const null_buffers& buffers, boost::system::error_code& ec);
+  size_t read_some_at(implementation_type& impl, boost::uint64_t offset,
+      const null_buffers& buffers, boost::system::error_code& ec);
+  template <typename Handler>
+  void async_read_some(implementation_type& impl,
+      const null_buffers& buffers, Handler handler);
+  template <typename Handler>
+  void async_read_some_at(implementation_type& impl, boost::uint64_t offset,
+      const null_buffers& buffers, Handler handler);
+
+  // Helper class for waiting for synchronous operations to complete.
+  class overlapped_wrapper;
+
+  // Helper function to perform a synchronous write operation.
+  BOOST_ASIO_DECL size_t do_write(implementation_type& impl,
+      boost::uint64_t offset, const boost::asio::const_buffer& buffer,
+      boost::system::error_code& ec);
+
+  // Helper function to start a write operation.
+  BOOST_ASIO_DECL void start_write_op(implementation_type& impl,
+      boost::uint64_t offset, const boost::asio::const_buffer& buffer,
+      operation* op);
+
+  // Helper function to perform a synchronous write operation.
+  BOOST_ASIO_DECL size_t do_read(implementation_type& impl,
+      boost::uint64_t offset, const boost::asio::mutable_buffer& buffer,
+      boost::system::error_code& ec);
+
+  // Helper function to start a read operation.
+  BOOST_ASIO_DECL void start_read_op(implementation_type& impl,
+      boost::uint64_t offset, const boost::asio::mutable_buffer& buffer,
+      operation* op);
+
+  // Update the ID of the thread from which cancellation is safe.
+  BOOST_ASIO_DECL void update_cancellation_thread_id(implementation_type& impl);
+
+  // Helper function to close a handle when the associated object is being
+  // destroyed.
+  BOOST_ASIO_DECL void close_for_destruction(implementation_type& impl);
+
+  // The IOCP service used for running asynchronous operations and dispatching
+  // handlers.
+  win_iocp_io_service& iocp_service_;
+
+  // Mutex to protect access to the linked list of implementations.
+  mutex mutex_;
+
+  // The head of a linked list of all implementations.
+  implementation_type* impl_list_;
+};
+
+} // namespace detail
+} // namespace asio
+} // namespace boost
+
+#include <boost/asio/detail/pop_options.hpp>
+
+#if defined(BOOST_ASIO_HEADER_ONLY)
+# include <boost/asio/detail/impl/win_iocp_handle_service.ipp>
+#endif // defined(BOOST_ASIO_HEADER_ONLY)
+
+#endif // defined(BOOST_ASIO_HAS_IOCP)
+
+#endif // BOOST_ASIO_DETAIL_WIN_IOCP_HANDLE_SERVICE_HPP