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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#ifndef CEPH_CLOCK_H
#define CEPH_CLOCK_H
#include <iomanip>
#include <iostream>
#include <sys/time.h>
#include <time.h>
#include "include/utime.h"
class Clock {
protected:
//utime_t start_offset;
//utime_t abs_last;
utime_t last;
utime_t zero;
public:
Clock();
~Clock();
// real time.
utime_t real_now() {
utime_t realnow = now();
realnow += zero;
//gettimeofday(&realnow.timeval(), NULL);
return realnow;
}
utime_t now() {
//lock.Lock();
struct timeval tv;
gettimeofday(&tv, NULL);
utime_t n(&tv);
n -= zero;
if (n < last) {
//derr << "WARNING: clock jumped backwards from " << last << " to " << n << dendl;
n = last; // clock jumped backwards!
} else
last = n;
//lock.Unlock();
return n;
}
utime_t recent_now() {
return last;
}
void realify(utime_t& t) {
t += zero;
}
void make_timespec(utime_t& t, struct timespec *ts) {
utime_t real = t;
realify(real);
memset(ts, 0, sizeof(*ts));
ts->tv_sec = real.sec();
ts->tv_nsec = real.nsec();
}
// absolute time
time_t gettime() {
return real_now().sec();
}
};
extern Clock g_clock;
#endif
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