diff options
Diffstat (limited to 'boost/fiber/algo/work_stealing.hpp')
| -rw-r--r-- | boost/fiber/algo/work_stealing.hpp | 34 |
1 files changed, 19 insertions, 15 deletions
diff --git a/boost/fiber/algo/work_stealing.hpp b/boost/fiber/algo/work_stealing.hpp index 66cadd12be..db4b5cf12d 100644 --- a/boost/fiber/algo/work_stealing.hpp +++ b/boost/fiber/algo/work_stealing.hpp @@ -8,19 +8,22 @@ #ifndef BOOST_FIBERS_ALGO_WORK_STEALING_H #define BOOST_FIBERS_ALGO_WORK_STEALING_H +#include <atomic> #include <condition_variable> #include <chrono> #include <cstddef> +#include <cstdint> #include <mutex> #include <vector> #include <boost/config.hpp> +#include <boost/intrusive_ptr.hpp> #include <boost/fiber/algo/algorithm.hpp> -#include <boost/fiber/detail/context_spinlock_queue.hpp> -#include <boost/fiber/detail/context_spmc_queue.hpp> #include <boost/fiber/context.hpp> #include <boost/fiber/detail/config.hpp> +#include <boost/fiber/detail/context_spinlock_queue.hpp> +#include <boost/fiber/detail/context_spmc_queue.hpp> #include <boost/fiber/scheduler.hpp> #ifdef BOOST_HAS_ABI_HEADERS @@ -33,24 +36,25 @@ namespace algo { class work_stealing : public algorithm { private: - static std::vector< work_stealing * > schedulers_; + static std::atomic< std::uint32_t > counter_; + static std::vector< intrusive_ptr< work_stealing > > schedulers_; - std::size_t idx_; - std::size_t max_idx_; + std::uint32_t id_; + std::uint32_t thread_count_; #ifdef BOOST_FIBERS_USE_SPMC_QUEUE - alignas(cache_alignment) detail::context_spmc_queue rqueue_{}; + detail::context_spmc_queue rqueue_{}; #else - alignas(cache_alignment) detail::context_spinlock_queue rqueue_{}; + detail::context_spinlock_queue rqueue_{}; #endif std::mutex mtx_{}; std::condition_variable cnd_{}; bool flag_{ false }; bool suspend_; - static void init_( std::size_t max_idx); + static void init_( std::uint32_t, std::vector< intrusive_ptr< work_stealing > > &); public: - work_stealing( std::size_t max_idx, std::size_t idx, bool suspend = false); + work_stealing( std::uint32_t, bool = false); work_stealing( work_stealing const&) = delete; work_stealing( work_stealing &&) = delete; @@ -58,21 +62,21 @@ public: work_stealing & operator=( work_stealing const&) = delete; work_stealing & operator=( work_stealing &&) = delete; - void awakened( context * ctx) noexcept; + virtual void awakened( context *) noexcept; - context * pick_next() noexcept; + virtual context * pick_next() noexcept; - context * steal() noexcept { + virtual context * steal() noexcept { return rqueue_.steal(); } - bool has_ready_fibers() const noexcept { + virtual bool has_ready_fibers() const noexcept { return ! rqueue_.empty(); } - void suspend_until( std::chrono::steady_clock::time_point const& time_point) noexcept; + virtual void suspend_until( std::chrono::steady_clock::time_point const&) noexcept; - void notify() noexcept; + virtual void notify() noexcept; }; }}} |