mirror of
https://github.com/scylladb/scylladb.git
synced 2026-04-23 10:00:35 +00:00
775b7e41f4
* seastar d59fcef...b924495 (2): > build: Fix protobuf generation rules > Merge "Restructure files" from Jesse Includes fixup patch from Jesse: " Update Seastar `#include`s to reflect restructure All Seastar header files are now prefixed with "seastar" and the configure script reflects the new locations of files. Signed-off-by: Jesse Haber-Kucharsky <jhaberku@scylladb.com> Message-Id: <5d22d964a7735696fb6bb7606ed88f35dde31413.1542731639.git.jhaberku@scylladb.com> "
49 lines
1.3 KiB
C++
49 lines
1.3 KiB
C++
/*
|
|
* Copyright (C) 2015 ScyllaDB
|
|
*/
|
|
|
|
/*
|
|
* This file is part of Scylla.
|
|
*
|
|
* Scylla is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Scylla 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <seastar/core/timer.hh>
|
|
#include <seastar/core/semaphore.hh>
|
|
#include <seastar/core/reactor.hh>
|
|
#include "seastarx.hh"
|
|
|
|
namespace utils {
|
|
|
|
/**
|
|
* 100% naive rate limiter. Consider it a placeholder
|
|
* Will let you process X "units" per second, then reset this every s.
|
|
* Obviously, accuracy is virtually non-existant and steady rate will fluctuate.
|
|
*/
|
|
class rate_limiter {
|
|
private:
|
|
timer<lowres_clock> _timer;
|
|
size_t _units_per_s;
|
|
semaphore _sem {0};
|
|
|
|
void on_timer();
|
|
public:
|
|
rate_limiter(size_t rate);
|
|
future<> reserve(size_t u);
|
|
};
|
|
|
|
}
|