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82 lines
1.8 KiB
82 lines
1.8 KiB
// |
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// detail/posix_tss_ptr.hpp |
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// ~~~~~~~~~~~~~~~~~~~~~~~~ |
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// |
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// Copyright (c) 2003-2011 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 BOOST_ASIO_DETAIL_POSIX_TSS_PTR_HPP |
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#define BOOST_ASIO_DETAIL_POSIX_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 <boost/asio/detail/config.hpp> |
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#if defined(BOOST_HAS_PTHREADS) && !defined(BOOST_ASIO_DISABLE_THREADS) |
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#include <pthread.h> |
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#include <boost/asio/detail/noncopyable.hpp> |
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#include <boost/asio/detail/push_options.hpp> |
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namespace boost { |
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namespace asio { |
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namespace detail { |
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// Helper function to create thread-specific storage. |
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BOOST_ASIO_DECL void posix_tss_ptr_create(pthread_key_t& key); |
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template <typename T> |
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class posix_tss_ptr |
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: private noncopyable |
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{ |
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public: |
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// Constructor. |
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posix_tss_ptr() |
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{ |
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posix_tss_ptr_create(tss_key_); |
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} |
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// Destructor. |
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~posix_tss_ptr() |
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{ |
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::pthread_key_delete(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*>(::pthread_getspecific(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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::pthread_setspecific(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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pthread_key_t tss_key_; |
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}; |
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} // namespace detail |
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} // namespace asio |
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} // namespace boost |
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#include <boost/asio/detail/pop_options.hpp> |
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#if defined(BOOST_ASIO_HEADER_ONLY) |
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# include <boost/asio/detail/impl/posix_tss_ptr.ipp> |
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#endif // defined(BOOST_ASIO_HEADER_ONLY) |
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#endif // defined(BOOST_HAS_PTHREADS) && !defined(BOOST_ASIO_DISABLE_THREADS) |
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#endif // BOOST_ASIO_DETAIL_POSIX_TSS_PTR_HPP
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