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1 | // Copyright Oliver Kowalke 2013. |
2 | // Distributed under the Boost Software License, Version 1.0. | |
3 | // (See accompanying file LICENSE_1_0.txt or copy at | |
4 | // http://www.boost.org/LICENSE_1_0.txt) | |
5 | ||
6 | #ifndef BOOST_FIBERS_ALGO_ROUND_ROBIN_H | |
7 | #define BOOST_FIBERS_ALGO_ROUND_ROBIN_H | |
8 | ||
9 | #include <condition_variable> | |
10 | #include <chrono> | |
11 | #include <mutex> | |
12 | ||
13 | #include <boost/config.hpp> | |
14 | ||
15 | #include <boost/fiber/algo/algorithm.hpp> | |
16 | #include <boost/fiber/context.hpp> | |
17 | #include <boost/fiber/detail/config.hpp> | |
18 | #include <boost/fiber/scheduler.hpp> | |
19 | ||
20 | #ifdef BOOST_HAS_ABI_HEADERS | |
21 | # include BOOST_ABI_PREFIX | |
22 | #endif | |
23 | ||
24 | #ifdef _MSC_VER | |
25 | # pragma warning(push) | |
26 | # pragma warning(disable:4251) | |
27 | #endif | |
28 | ||
29 | namespace boost { | |
30 | namespace fibers { | |
31 | namespace algo { | |
32 | ||
33 | class BOOST_FIBERS_DECL round_robin : public algorithm { | |
34 | private: | |
35 | typedef scheduler::ready_queue_t rqueue_t; | |
36 | ||
37 | rqueue_t rqueue_{}; | |
38 | std::mutex mtx_{}; | |
39 | std::condition_variable cnd_{}; | |
40 | bool flag_{ false }; | |
41 | ||
42 | public: | |
43 | round_robin() = default; | |
44 | ||
45 | round_robin( round_robin const&) = delete; | |
46 | round_robin & operator=( round_robin const&) = delete; | |
47 | ||
48 | virtual void awakened( context *) noexcept; | |
49 | ||
50 | virtual context * pick_next() noexcept; | |
51 | ||
52 | virtual bool has_ready_fibers() const noexcept; | |
53 | ||
54 | virtual void suspend_until( std::chrono::steady_clock::time_point const&) noexcept; | |
55 | ||
56 | virtual void notify() noexcept; | |
57 | }; | |
58 | ||
59 | }}} | |
60 | ||
61 | #ifdef _MSC_VER | |
62 | # pragma warning(pop) | |
63 | #endif | |
64 | ||
65 | #ifdef BOOST_HAS_ABI_HEADERS | |
66 | # include BOOST_ABI_SUFFIX | |
67 | #endif | |
68 | ||
69 | #endif // BOOST_FIBERS_ALGO_ROUND_ROBIN_H |