projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | |
| 2 | // Copyright Nat Goodspeed + Oliver Kowalke 2015. | |
| 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_ALGO_SHARED_WORK_H | |
| 8 | #define BOOST_FIBERS_ALGO_SHARED_WORK_H | |
| 9 | ||
| 10 | #include <condition_variable> | |
| 11 | #include <chrono> | |
| 12 | #include <deque> | |
| 13 | #include <mutex> | |
| 14 | ||
| 15 | #include <boost/config.hpp> | |
| 16 | ||
| 17 | #include <boost/fiber/algo/algorithm.hpp> | |
| 18 | #include <boost/fiber/context.hpp> | |
| 19 | #include <boost/fiber/detail/config.hpp> | |
| 20 | #include <boost/fiber/scheduler.hpp> | |
| 21 | ||
| 22 | #ifdef BOOST_HAS_ABI_HEADERS | |
| 23 | # include BOOST_ABI_PREFIX | |
| 24 | #endif | |
| 25 | ||
| 26 | #ifdef _MSC_VER | |
| 27 | # pragma warning(push) | |
| 28 | # pragma warning(disable:4251) | |
| 29 | #endif | |
| 30 | ||
| 31 | namespace boost { | |
| 32 | namespace fibers { | |
| 33 | namespace algo { | |
| 34 | ||
| 35 | class BOOST_FIBERS_DECL shared_work : public algorithm { | |
| 36 | private: | |
| b32b8144 FG |
37 | typedef std::deque< context * > rqueue_type; |
| 38 | typedef scheduler::ready_queue_type lqueue_type; | |
| 7c673cae | 39 | |
| b32b8144 | 40 | static rqueue_type rqueue_; |
| 7c673cae FG |
41 | static std::mutex rqueue_mtx_; |
| 42 | ||
| b32b8144 | 43 | lqueue_type lqueue_{}; |
| 7c673cae FG |
44 | std::mutex mtx_{}; |
| 45 | std::condition_variable cnd_{}; | |
| 46 | bool flag_{ false }; | |
| b32b8144 | 47 | bool suspend_{ false }; |
| 7c673cae FG |
48 | |
| 49 | public: | |
| 50 | shared_work() = default; | |
| 51 | ||
| 52 | shared_work( bool suspend) : | |
| 53 | suspend_{ suspend } { | |
| 54 | } | |
| 55 | ||
| 56 | shared_work( shared_work const&) = delete; | |
| 57 | shared_work( shared_work &&) = delete; | |
| 58 | ||
| 59 | shared_work & operator=( shared_work const&) = delete; | |
| 60 | shared_work & operator=( shared_work &&) = delete; | |
| 61 | ||
| 62 | void awakened( context * ctx) noexcept; | |
| 63 | ||
| 64 | context * pick_next() noexcept; | |
| 65 | ||
| 66 | bool has_ready_fibers() const noexcept { | |
| b32b8144 | 67 | std::unique_lock< std::mutex > lock{ rqueue_mtx_ }; |
| 7c673cae FG |
68 | return ! rqueue_.empty() || ! lqueue_.empty(); |
| 69 | } | |
| 70 | ||
| 71 | void suspend_until( std::chrono::steady_clock::time_point const& time_point) noexcept; | |
| 72 | ||
| 73 | void notify() noexcept; | |
| 74 | }; | |
| 75 | ||
| 76 | }}} | |
| 77 | ||
| 78 | #ifdef _MSC_VER | |
| 79 | # pragma warning(pop) | |
| 80 | #endif | |
| 81 | ||
| 82 | #ifdef BOOST_HAS_ABI_HEADERS | |
| 83 | # include BOOST_ABI_SUFFIX | |
| 84 | #endif | |
| 85 | ||
| 86 | #endif // BOOST_FIBERS_ALGO_SHARED_WORK_H |