80c4a211d8
At the moment, various different subsystems use their different ideas of what a timeout_clock is. This makes it a bit harder to pass timeouts between them because although most are actually a lowres_clock, that is not guaranteed to be the case. As a matter of fact, the timeout for restricted reads is expressed as nanoseconds, which is not a valid duration in the lowres_clock. As a first step towards fixing this, we'll consolidate all of the existing timeout_clocks in one, now called db::timeout_clock. Other things that tend to be expressed in terms of that clock--like the fact that the maximum time_point means no timeout and a semaphore that wait()s with that resolution are also moved to the common header. In the upcoming patch we will fix the restricted reader timeouts to be expressed in terms of the new timeout_clock. Signed-off-by: Glauber Costa <glauber@scylladb.com>
33 lines
1.0 KiB
C++
33 lines
1.0 KiB
C++
/*
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* Copyright (C) 2017 ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <seastar/core/lowres_clock.hh>
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#include <seastar/core/semaphore.hh>
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#include <chrono>
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namespace db {
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using timeout_clock = seastar::lowres_clock;
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using timeout_semaphore = basic_semaphore<default_timeout_exception_factory, timeout_clock>;
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static constexpr timeout_clock::time_point no_timeout = timeout_clock::time_point::max();
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}
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