projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| b32b8144 FG |
1 | |
| 2 | // Copyright Oliver Kowalke 2013. | |
| 3 | // Distributed under the Boost Software License, Version 1.0. | |
| 4 | // (See accompanying file LICENSE_1_0.txt or copy at | |
| 5 | // http://www.boost.org/LICENSE_1_0.txt) | |
| 6 | ||
| 7 | #ifndef BOOST_FIBERS_SPINLOCK_H | |
| 8 | #define BOOST_FIBERS_SPINLOCK_H | |
| 9 | ||
| 10 | #include <boost/config.hpp> | |
| 11 | ||
| 12 | #include <boost/fiber/detail/config.hpp> | |
| 13 | ||
| 14 | #if !defined(BOOST_FIBERS_NO_ATOMICS) | |
| 15 | # include <mutex> | |
| 16 | # include <boost/fiber/detail/spinlock_ttas_adaptive.hpp> | |
| 17 | # include <boost/fiber/detail/spinlock_ttas.hpp> | |
| 18 | # if defined(BOOST_FIBERS_HAS_FUTEX) | |
| 19 | # include <boost/fiber/detail/spinlock_ttas_adaptive_futex.hpp> | |
| 20 | # include <boost/fiber/detail/spinlock_ttas_futex.hpp> | |
| 21 | # endif | |
| 22 | # if defined(BOOST_USE_TSX) | |
| 23 | # include <boost/fiber/detail/spinlock_rtm.hpp> | |
| 24 | # endif | |
| 25 | #endif | |
| 26 | ||
| 27 | #ifdef BOOST_HAS_ABI_HEADERS | |
| 28 | # include BOOST_ABI_PREFIX | |
| 29 | #endif | |
| 30 | ||
| 31 | namespace boost { | |
| 32 | namespace fibers { | |
| 33 | namespace detail { | |
| 34 | ||
| 35 | #if defined(BOOST_FIBERS_NO_ATOMICS) | |
| 36 | struct spinlock { | |
| 37 | constexpr spinlock() noexcept {} | |
| 38 | void lock() noexcept {} | |
| 39 | void unlock() noexcept {} | |
| 40 | }; | |
| 41 | ||
| 42 | struct spinlock_lock { | |
| 43 | constexpr spinlock_lock( spinlock &) noexcept {} | |
| 44 | void lock() noexcept {} | |
| 45 | void unlock() noexcept {} | |
| 46 | }; | |
| 47 | #else | |
| 48 | # if defined(BOOST_FIBERS_SPINLOCK_STD_MUTEX) | |
| 49 | using spinlock = std::mutex; | |
| 50 | # elif defined(BOOST_FIBERS_SPINLOCK_TTAS_FUTEX) | |
| 51 | # if defined(BOOST_USE_TSX) | |
| 52 | using spinlock = spinlock_rtm< spinlock_ttas_futex >; | |
| 53 | # else | |
| 54 | using spinlock = spinlock_ttas_futex; | |
| 55 | # endif | |
| 56 | # elif defined(BOOST_FIBERS_SPINLOCK_TTAS_ADAPTIVE_FUTEX) | |
| 57 | # if defined(BOOST_USE_TSX) | |
| 58 | using spinlock = spinlock_rtm< spinlock_ttas_adaptive_futex >; | |
| 59 | # else | |
| 60 | using spinlock = spinlock_ttas_adaptive_futex; | |
| 61 | # endif | |
| 62 | # elif defined(BOOST_FIBERS_SPINLOCK_TTAS_ADAPTIVE) | |
| 63 | # if defined(BOOST_USE_TSX) | |
| 64 | using spinlock = spinlock_rtm< spinlock_ttas_adaptive >; | |
| 65 | # else | |
| 66 | using spinlock = spinlock_ttas_adaptive; | |
| 67 | # endif | |
| 68 | # else | |
| 69 | # if defined(BOOST_USE_TSX) | |
| 70 | using spinlock = spinlock_rtm< spinlock_ttas >; | |
| 71 | # else | |
| 72 | using spinlock = spinlock_ttas; | |
| 73 | # endif | |
| 74 | # endif | |
| 75 | using spinlock_lock = std::unique_lock< spinlock >; | |
| 76 | #endif | |
| 77 | ||
| 78 | }}} | |
| 79 | ||
| 80 | #ifdef BOOST_HAS_ABI_HEADERS | |
| 81 | # include BOOST_ABI_SUFFIX | |
| 82 | #endif | |
| 83 | ||
| 84 | #endif // BOOST_FIBERS_SPINLOCK_H |