70 lines
1.5 KiB
C++
70 lines
1.5 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#pragma once
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#include "td/utils/port/config.h"
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#ifdef TD_POLL_KQUEUE
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#include "td/utils/common.h"
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#include "td/utils/List.h"
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#include "td/utils/port/detail/PollableFd.h"
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#include "td/utils/port/PollBase.h"
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#include "td/utils/port/PollFlags.h"
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#include <cstdint>
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#include <sys/event.h>
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namespace td {
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namespace detail {
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class KQueue final : public PollBase {
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public:
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KQueue();
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KQueue(const KQueue &) = delete;
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KQueue &operator=(const KQueue &) = delete;
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KQueue(KQueue &&) = delete;
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KQueue &operator=(KQueue &&) = delete;
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~KQueue() override;
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void init() override;
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void clear() override;
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void subscribe(PollableFd fd, PollFlags flags) override;
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void unsubscribe(PollableFdRef fd) override;
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void unsubscribe_before_close(PollableFdRef fd) override;
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void run(int timeout_ms) override;
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static bool is_edge_triggered() {
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return true;
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}
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private:
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vector<struct kevent> events;
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int changes_n;
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int kq;
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ListNode list_root;
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int update(int nevents, const timespec *timeout, bool may_fail = false);
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void invalidate(int native_fd);
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void flush_changes(bool may_fail = false);
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void add_change(std::uintptr_t ident, int16 filter, uint16 flags, uint32 fflags, std::intptr_t data, void *udata);
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};
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} // namespace detail
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} // namespace td
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#endif
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