95 lines
2.3 KiB
C++
95 lines
2.3 KiB
C++
/*
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
*
|
|
* Copyright 2010-2016 Danny Robson <danny@nerdcruft.net>
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "stats.hpp"
|
|
|
|
#include <chrono>
|
|
#include <cstdint>
|
|
#include <string>
|
|
|
|
|
|
namespace cruft {
|
|
///////////////////////////////////////////////////////////////////////////
|
|
uintmax_t nanoseconds (void);
|
|
|
|
|
|
//-------------------------------------------------------------------------
|
|
template <typename T>
|
|
void sleep (std::chrono::duration<T,std::nano> dt)
|
|
{
|
|
auto nano = std::chrono::duration_cast<std::chrono::nanoseconds> (dt);
|
|
sleep (nano.count ());
|
|
}
|
|
|
|
|
|
//-------------------------------------------------------------------------
|
|
void sleep (uint64_t ns);
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
class delta_clock {
|
|
public:
|
|
delta_clock ();
|
|
std::chrono::nanoseconds dt(void);
|
|
|
|
protected:
|
|
struct {
|
|
uint64_t prev;
|
|
uint64_t curr;
|
|
} time;
|
|
};
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
class period_query {
|
|
public:
|
|
explicit period_query (float seconds);
|
|
|
|
bool poll (void);
|
|
|
|
protected:
|
|
struct {
|
|
uint64_t start;
|
|
uint64_t period;
|
|
} m_time;
|
|
};
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
class rate_limiter {
|
|
public:
|
|
explicit rate_limiter (unsigned rate);
|
|
|
|
void poll (void);
|
|
|
|
protected:
|
|
uint64_t m_last;
|
|
unsigned m_target;
|
|
};
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
class polled_duration {
|
|
public:
|
|
polled_duration (std::string name, uint64_t interval);
|
|
|
|
void start (void);
|
|
void stop (void);
|
|
|
|
protected:
|
|
std::string m_name;
|
|
uint64_t m_last;
|
|
uint64_t m_interval;
|
|
uint64_t m_next;
|
|
|
|
stats::accumulator<uint64_t> m_series;
|
|
};
|
|
}
|