//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
// 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)
#pragma once
#include "td/utils/port/config.h"
#ifdef TD_POLL_SELECT
#include "td/utils/common.h"
#include "td/utils/port/Fd.h"
#include "td/utils/port/PollBase.h"
#include <sys/select.h>
namespace td {
namespace detail {
class Select final : public PollBase {
public:
Select() = default;
Select(const Select &) = delete;
Select &operator=(const Select &) = delete;
Select(Select &&) = delete;
Select &operator=(Select &&) = delete;
~Select() override = default;
void init() override;
void clear() override;
void subscribe(const Fd &fd, Fd::Flags flags) override;
void unsubscribe(const Fd &fd) override;
void unsubscribe_before_close(const Fd &fd) override;
void run(int timeout_ms) override;
private:
struct FdInfo {
Fd fd_ref;
Fd::Flags flags;
};
vector<FdInfo> fds_;
fd_set all_fd_;
fd_set read_fd_;
fd_set write_fd_;
fd_set except_fd_;
int max_fd_;
} // namespace detail
} // namespace td
#endif
