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authorMatthias P. Braendli <matthias.braendli@mpb.li>2019-10-07 04:52:50 +0200
committerMatthias P. Braendli <matthias.braendli@mpb.li>2019-10-07 04:52:50 +0200
commit0aa6201a490bfabc0ae021ceb9f1fb0f46727c5d (patch)
treea71d934d8151dd43e7c16555fef17fd749c5da70 /lib/asio/detail/buffer_resize_guard.hpp
parent558d74bffd9f069955af52c0b308a1d6169bcff0 (diff)
parent0330221d51421caa110b8c5dcb567cc3d0620eb9 (diff)
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Merge lime output into next branch
Diffstat (limited to 'lib/asio/detail/buffer_resize_guard.hpp')
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diff --git a/lib/asio/detail/buffer_resize_guard.hpp b/lib/asio/detail/buffer_resize_guard.hpp
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-//
-// detail/buffer_resize_guard.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 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_DETAIL_BUFFER_RESIZE_GUARD_HPP
-#define ASIO_DETAIL_BUFFER_RESIZE_GUARD_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include "asio/detail/limits.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-// Helper class to manage buffer resizing in an exception safe way.
-template <typename Buffer>
-class buffer_resize_guard
-{
-public:
- // Constructor.
- buffer_resize_guard(Buffer& buffer)
- : buffer_(buffer),
- old_size_(buffer.size())
- {
- }
-
- // Destructor rolls back the buffer resize unless commit was called.
- ~buffer_resize_guard()
- {
- if (old_size_ != (std::numeric_limits<size_t>::max)())
- {
- buffer_.resize(old_size_);
- }
- }
-
- // Commit the resize transaction.
- void commit()
- {
- old_size_ = (std::numeric_limits<size_t>::max)();
- }
-
-private:
- // The buffer being managed.
- Buffer& buffer_;
-
- // The size of the buffer at the time the guard was constructed.
- size_t old_size_;
-};
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_DETAIL_BUFFER_RESIZE_GUARD_HPP