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Diffstat (limited to 'lib/asio/completion_condition.hpp')
-rw-r--r-- | lib/asio/completion_condition.hpp | 218 |
1 files changed, 0 insertions, 218 deletions
diff --git a/lib/asio/completion_condition.hpp b/lib/asio/completion_condition.hpp deleted file mode 100644 index 563f417..0000000 --- a/lib/asio/completion_condition.hpp +++ /dev/null @@ -1,218 +0,0 @@ -// -// completion_condition.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_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_t { 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 |