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Diffstat (limited to 'src/seastar/include/seastar/core/manual_clock.hh')
-rw-r--r-- | src/seastar/include/seastar/core/manual_clock.hh | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/seastar/include/seastar/core/manual_clock.hh b/src/seastar/include/seastar/core/manual_clock.hh new file mode 100644 index 000000000..34bc5bec1 --- /dev/null +++ b/src/seastar/include/seastar/core/manual_clock.hh @@ -0,0 +1,51 @@ +/* + * This file is open source software, licensed to you under the terms + * of the Apache License, Version 2.0 (the "License"). See the NOTICE file + * distributed with this work for additional information regarding copyright + * ownership. You may not use this file except in compliance with the License. + * + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +/* + * Copyright (C) 2016 ScyllaDB + */ + +#pragma once + +#include <seastar/core/timer.hh> + +#include <atomic> +#include <chrono> + +namespace seastar { + +class manual_clock { +public: + using rep = int64_t; + using period = std::chrono::nanoseconds::period; + using duration = std::chrono::duration<rep, period>; + using time_point = std::chrono::time_point<manual_clock, duration>; +private: + static std::atomic<rep> _now; + static void expire_timers() noexcept; +public: + manual_clock() noexcept; + static time_point now() noexcept { + return time_point(duration(_now.load(std::memory_order_relaxed))); + } + static void advance(duration d) noexcept; +}; + +extern template class timer<manual_clock>; + +} + |