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ton/tdutils/td/utils/port/detail/Select.h
2020-04-10 23:06:01 +04:00

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1.9 KiB
C++

/*
This file is part of TON Blockchain Library.
TON Blockchain Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
TON Blockchain Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with TON Blockchain Library. If not, see <http://www.gnu.org/licenses/>.
Copyright 2017-2020 Telegram Systems LLP
*/
#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() override = default;
void init() override;
void clear() override;
void subscribe(PollableFd fd, PollFlags flags) override;
void unsubscribe(PollableFdRef fd) override;
void unsubscribe_before_close(PollableFdRef fd) override;
void run(int timeout_ms) override;
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