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Viewing changes to include/libtorrent/asio/detail/win_tss_ptr.hpp

  • Committer: Bazaar Package Importer
  • Author(s): Christophe Sauthier
  • Date: 2010-08-10 12:59:37 UTC
  • mfrom: (1.3.7 upstream)
  • Revision ID: james.westby@ubuntu.com-20100810125937-jbcmmf17y8yo9hgz
Tags: 0.15.0-0ubuntu1
* New upstream version.
* debian/patches/100_fix_html_docs.patch: refreshed.
* debian/control: bump up standards-version to 3.9.1 (no changes).

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include/libtorrent/asio/detail/win_tss_ptr.hpp
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//
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// win_tss_ptr.hpp
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// ~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2008 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef ASIO_DETAIL_WIN_TSS_PTR_HPP
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#define ASIO_DETAIL_WIN_TSS_PTR_HPP
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
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# pragma once
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#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
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#include "asio/detail/push_options.hpp"
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#include "asio/detail/push_options.hpp"
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#include <boost/config.hpp>
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#include "asio/detail/pop_options.hpp"
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#if defined(BOOST_WINDOWS)
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#include "asio/error.hpp"
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#include "asio/system_error.hpp"
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#include "asio/detail/noncopyable.hpp"
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#include "asio/detail/socket_types.hpp"
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#include "asio/detail/push_options.hpp"
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#include <boost/throw_exception.hpp>
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#include "asio/detail/pop_options.hpp"
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namespace asio {
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namespace detail {
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template <typename T>
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class win_tss_ptr
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  : private noncopyable
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{
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public:
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#if defined(UNDER_CE)
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  enum { out_of_indexes = 0xFFFFFFFF };
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#else
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  enum { out_of_indexes = TLS_OUT_OF_INDEXES };
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#endif
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  // Constructor.
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  win_tss_ptr()
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  {
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    tss_key_ = ::TlsAlloc();
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    if (tss_key_ == out_of_indexes)
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    {
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      DWORD last_error = ::GetLastError();
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      asio::system_error e(
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          asio::error_code(last_error,
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            asio::error::get_system_category()),
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          "tss");
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      boost::throw_exception(e);
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    }
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  }
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  // Destructor.
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  ~win_tss_ptr()
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  {
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    ::TlsFree(tss_key_);
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  }
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  // Get the value.
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  operator T*() const
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  {
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    return static_cast<T*>(::TlsGetValue(tss_key_));
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  }
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  // Set the value.
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  void operator=(T* value)
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  {
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    ::TlsSetValue(tss_key_, value);
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  }
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private:
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  // Thread-specific storage to allow unlocked access to determine whether a
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  // thread is a member of the pool.
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  DWORD tss_key_;
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};
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} // namespace detail
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} // namespace asio
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#endif // defined(BOOST_WINDOWS)
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#include "asio/detail/pop_options.hpp"
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#endif // ASIO_DETAIL_WIN_TSS_PTR_HPP