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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2025
//
// 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/detail/PollableFd.h"
#include "td/utils/port/PollBase.h"
#include "td/utils/port/PollFlags.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() final = default;
void init() final;
void clear() final;
void subscribe(PollableFd fd, PollFlags flags) final;
void unsubscribe(PollableFdRef fd) final;
void unsubscribe_before_close(PollableFdRef fd) final;
void run(int timeout_ms) final;
static bool is_edge_triggered() {
return false;
}
private:
struct FdInfo {
PollableFd fd;
PollFlags 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
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