Ratelimit.h

// SPDX-License-Identifier: GPL-2.0-only
 
#pragma once
 
#include <chrono>
 
namespace SlHelpers {

class Ratelimit {
public:
    using Clock = std::chrono::steady_clock;
 
    Ratelimit() = delete;

    Ratelimit(const std::chrono::milliseconds &dur) : dur(dur), last(Clock::time_point{}) { }

    void reset() { last = Clock::time_point{}; }

    bool limit() {
        const auto now = Clock::now();
        if (last + dur < now) {
            last = now;
            return true;
        }
 
        return false;
    }
private:
    const std::chrono::milliseconds dur;
    Clock::time_point last;
};
 
}