diff options
Diffstat (limited to 'lib/asio/detail/concurrency_hint.hpp')
| -rw-r--r-- | lib/asio/detail/concurrency_hint.hpp | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/lib/asio/detail/concurrency_hint.hpp b/lib/asio/detail/concurrency_hint.hpp deleted file mode 100644 index 229124d..0000000 --- a/lib/asio/detail/concurrency_hint.hpp +++ /dev/null @@ -1,94 +0,0 @@ -// -// detail/concurrency_hint.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_CONCURRENCY_HINT_HPP -#define ASIO_DETAIL_CONCURRENCY_HINT_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/noncopyable.hpp" - -// The concurrency hint ID and mask are used to identify when a "well-known" -// concurrency hint value has been passed to the io_context. -#define ASIO_CONCURRENCY_HINT_ID 0xA5100000u -#define ASIO_CONCURRENCY_HINT_ID_MASK 0xFFFF0000u - -// If set, this bit indicates that the scheduler should perform locking. -#define ASIO_CONCURRENCY_HINT_LOCKING_SCHEDULER 0x1u - -// If set, this bit indicates that the reactor should perform locking when -// managing descriptor registrations. -#define ASIO_CONCURRENCY_HINT_LOCKING_REACTOR_REGISTRATION 0x2u - -// If set, this bit indicates that the reactor should perform locking for I/O. -#define ASIO_CONCURRENCY_HINT_LOCKING_REACTOR_IO 0x4u - -// Helper macro to determine if we have a special concurrency hint. -#define ASIO_CONCURRENCY_HINT_IS_SPECIAL(hint) \ - ((static_cast<unsigned>(hint) \ - & ASIO_CONCURRENCY_HINT_ID_MASK) \ - == ASIO_CONCURRENCY_HINT_ID) - -// Helper macro to determine if locking is enabled for a given facility. -#define ASIO_CONCURRENCY_HINT_IS_LOCKING(facility, hint) \ - (((static_cast<unsigned>(hint) \ - & (ASIO_CONCURRENCY_HINT_ID_MASK \ - | ASIO_CONCURRENCY_HINT_LOCKING_ ## facility)) \ - ^ ASIO_CONCURRENCY_HINT_ID) != 0) - -// This special concurrency hint disables locking in both the scheduler and -// reactor I/O. This hint has the following restrictions: -// -// - Care must be taken to ensure that all operations on the io_context and any -// of its associated I/O objects (such as sockets and timers) occur in only -// one thread at a time. -// -// - Asynchronous resolve operations fail with operation_not_supported. -// -// - If a signal_set is used with the io_context, signal_set objects cannot be -// used with any other io_context in the program. -#define ASIO_CONCURRENCY_HINT_UNSAFE \ - static_cast<int>(ASIO_CONCURRENCY_HINT_ID) - -// This special concurrency hint disables locking in the reactor I/O. This hint -// has the following restrictions: -// -// - Care must be taken to ensure that run functions on the io_context, and all -// operations on the io_context's associated I/O objects (such as sockets and -// timers), occur in only one thread at a time. -#define ASIO_CONCURRENCY_HINT_UNSAFE_IO \ - static_cast<int>(ASIO_CONCURRENCY_HINT_ID \ - | ASIO_CONCURRENCY_HINT_LOCKING_SCHEDULER \ - | ASIO_CONCURRENCY_HINT_LOCKING_REACTOR_REGISTRATION) - -// The special concurrency hint provides full thread safety. -#define ASIO_CONCURRENCY_HINT_SAFE \ - static_cast<int>(ASIO_CONCURRENCY_HINT_ID \ - | ASIO_CONCURRENCY_HINT_LOCKING_SCHEDULER \ - | ASIO_CONCURRENCY_HINT_LOCKING_REACTOR_REGISTRATION \ - | ASIO_CONCURRENCY_HINT_LOCKING_REACTOR_IO) - -// This #define may be overridden at compile time to specify a program-wide -// default concurrency hint, used by the zero-argument io_context constructor. -#if !defined(ASIO_CONCURRENCY_HINT_DEFAULT) -# define ASIO_CONCURRENCY_HINT_DEFAULT -1 -#endif // !defined(ASIO_CONCURRENCY_HINT_DEFAULT) - -// This #define may be overridden at compile time to specify a program-wide -// concurrency hint, used by the one-argument io_context constructor when -// passed a value of 1. -#if !defined(ASIO_CONCURRENCY_HINT_1) -# define ASIO_CONCURRENCY_HINT_1 1 -#endif // !defined(ASIO_CONCURRENCY_HINT_DEFAULT) - -#endif // ASIO_DETAIL_CONCURRENCY_HINT_HPP |