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// Copyright Nat Goodspeed + Oliver Kowalke 2015.
// 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 BOOST_FIBERS_ALGO_SHARED_WORK_H
#define BOOST_FIBERS_ALGO_SHARED_WORK_H
#include <condition_variable>
#include <chrono>
#include <deque>
#include <mutex>
#include <boost/config.hpp>
#include <boost/fiber/algo/algorithm.hpp>
#include <boost/fiber/context.hpp>
#include <boost/fiber/detail/config.hpp>
#include <boost/fiber/scheduler.hpp>
#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_PREFIX
#endif
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable:4251)
#endif
namespace boost {
namespace fibers {
namespace algo {
class BOOST_FIBERS_DECL shared_work : public algorithm {
private:
typedef std::deque< context * > rqueue_type;
typedef scheduler::ready_queue_type lqueue_type;
static rqueue_type rqueue_;
static std::mutex rqueue_mtx_;
lqueue_type lqueue_{};
std::mutex mtx_{};
std::condition_variable cnd_{};
bool flag_{ false };
bool suspend_{ false };
public:
shared_work() = default;
shared_work( bool suspend) :
suspend_{ suspend } {
}
shared_work( shared_work const&) = delete;
shared_work( shared_work &&) = delete;
shared_work & operator=( shared_work const&) = delete;
shared_work & operator=( shared_work &&) = delete;
void awakened( context * ctx) noexcept;
context * pick_next() noexcept;
bool has_ready_fibers() const noexcept {
std::unique_lock< std::mutex > lock{ rqueue_mtx_ };
return ! rqueue_.empty() || ! lqueue_.empty();
}
void suspend_until( std::chrono::steady_clock::time_point const& time_point) noexcept;
void notify() noexcept;
};
}}}
#ifdef _MSC_VER
# pragma warning(pop)
#endif
#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_SUFFIX
#endif
#endif // BOOST_FIBERS_ALGO_SHARED_WORK_H
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