91 lines
2.4 KiB
C++
91 lines
2.4 KiB
C++
/*
|
|
* This file is part of libgim.
|
|
*
|
|
* libgim is free software: you can redistribute it and/or modify it under the
|
|
* terms of the GNU General Public License as published by the Free Software
|
|
* Foundation, either version 3 of the License, or (at your option) any later
|
|
* version.
|
|
*
|
|
* libgim 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 libgim. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* Copyright 2010 Danny Robson <danny@nerdcruft.net>
|
|
*/
|
|
|
|
#ifndef __UTIL_TIME_HPP
|
|
#define __UTIL_TIME_HPP
|
|
|
|
#include <cstdint>
|
|
#include <string>
|
|
|
|
#include "stats.hpp"
|
|
|
|
namespace util {
|
|
// ------------------------------------------------------------------------
|
|
uint64_t nanoseconds (void);
|
|
void sleep (uint64_t ns);
|
|
|
|
// ------------------------------------------------------------------------
|
|
class delta_clock {
|
|
public:
|
|
delta_clock ();
|
|
double seconds (void);
|
|
|
|
protected:
|
|
struct {
|
|
uint64_t prev;
|
|
uint64_t curr;
|
|
} time;
|
|
};
|
|
|
|
// ------------------------------------------------------------------------
|
|
class period_query {
|
|
public:
|
|
period_query (double seconds);
|
|
|
|
bool poll (void);
|
|
|
|
protected:
|
|
struct {
|
|
uint64_t start;
|
|
uint64_t period;
|
|
} m_time;
|
|
};
|
|
|
|
// ------------------------------------------------------------------------
|
|
class rate_limiter {
|
|
public:
|
|
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;
|
|
};
|
|
}
|
|
|
|
#endif // __UTIL_TIME_HPP
|