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/**************************************************************************/
/* */
/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */
/* Copyright (c) 2008-2017 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */
/* Copyright (c) 2014-2022 Ulrich Sibiller <uli42@gmx.de> */
/* Copyright (c) 2014-2019 Mihai Moldovan <ionic@ionic.de> */
/* Copyright (c) 2011-2022 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/
/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com) */
/* */
/* NXCOMP, NX protocol compression and NX extensions to this software */
/* are copyright of the aforementioned persons and companies. */
/* */
/* Redistribution and use of the present software is allowed according */
/* to terms specified in the file LICENSE.nxcomp which comes in the */
/* source distribution. */
/* */
/* All rights reserved. */
/* */
/* NOTE: This software has received contributions from various other */
/* contributors, only the core maintainers and supporters are listed as */
/* copyright holders. Please contact us, if you feel you should be listed */
/* as copyright holder, as well. */
/* */
/**************************************************************************/
#ifndef Timestamp_H
#define Timestamp_H
#if HAVE_CTIME_S
#define __STDC_WANT_LIB_EXT1__ 1
#include <time.h>
#endif /* HAVE_CTIME_S */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iostream>
#include <string>
#include <sys/time.h>
#include "Misc.h"
//
// Log level.
//
#define PANIC
#define WARNING
#undef TEST
#undef DEBUG
//
// If not defined, always query the system time.
//
#undef CACHE_TIMESTAMP
//
// Log a warning if the time difference since
// the last update exceeds the given number
// of milliseconds.
//
#define DRIFT_TIMESTAMP 1
//
// Type used for timeout manipulation.
//
typedef struct timeval T_timestamp;
//
// Last timestamp taken from the system. If the
// timestamp is cached, we need to explicitly
// get a new timestamp after any operation that
// may have required a relevant amount of time.
//
extern T_timestamp timestamp;
//
// Get a timestamp instance with values set
// at the given amount of milliseconds.
//
inline T_timestamp getTimestamp(long ms)
{
struct timeval ts;
ts.tv_sec = ms / 1000;
ts.tv_usec = (ms % 1000) * 1000;
return ts;
}
//
// Return the difference in milliseconds
// between the two timestamps.
//
inline long diffTimestamp(const T_timestamp &ts1, const T_timestamp &ts2)
{
//
// Add 500 microseconds to round up
// to the nearest millisecond.
//
return ((ts2.tv_sec * 1000 + (ts2.tv_usec + 500) / 1000) -
(ts1.tv_sec * 1000 + (ts1.tv_usec + 500) / 1000));
}
//
// The same in microseconds. It doesn't
// round the value.
//
inline long diffUsTimestamp(const T_timestamp &ts1, const T_timestamp &ts2)
{
return ((ts2.tv_sec * 1000000 + ts2.tv_usec) -
(ts1.tv_sec * 1000000 + ts1.tv_usec));
}
//
// Return the last timestamp taken from the
// system. It doesn't update the timestamp.
//
inline T_timestamp getTimestamp()
{
#ifdef CACHE_TIMESTAMP
#ifdef TEST
T_timestamp ts;
gettimeofday(&ts, NULL);
long diffTs = diffTimestamp(timestamp, ts);
if (diffTs > DRIFT_TIMESTAMP)
{
*logofs << "Timestamp: WARNING! Time difference since the "
<< "current timestamp is " << diffTs << "ms.\n"
<< logofs_flush;
}
#endif
return timestamp;
#else
gettimeofday(×tamp, NULL);
return timestamp;
#endif
}
inline T_timestamp &setTimestamp(T_timestamp &ts, long ms)
{
ts.tv_sec = ms / 1000;
ts.tv_usec = (ms % 1000) * 1000;
return ts;
}
//
// Return the smaller between two timestamps.
//
inline T_timestamp &setMinTimestamp(T_timestamp &ts, long ms)
{
if ((ts.tv_sec * 1000 + ts.tv_usec / 1000) > ms)
{
ts.tv_sec = ms / 1000;
ts.tv_usec = (ms % 1000) * 1000;
}
return ts;
}
inline T_timestamp &setMinTimestamp(T_timestamp &ts1, T_timestamp &ts2)
{
if ((ts1.tv_sec * 1000000 + ts1.tv_usec) >
(ts2.tv_sec * 1000000 + ts2.tv_usec))
{
ts1.tv_sec = ts2.tv_sec;
ts1.tv_usec = ts2.tv_usec;
}
return ts1;
}
//
// Convert a timestamp in the total number
// of milliseconds.
//
inline long getMsTimestamp(const T_timestamp &ts)
{
return ts.tv_sec * 1000 + ts.tv_usec / 1000;
}
//
// A 0 value on both seconds and microseconds
// fields means that timestamp is invalid or
// not set.
//
inline T_timestamp nullTimestamp()
{
struct timeval ts;
ts.tv_sec = 0;
ts.tv_usec = 0;
return ts;
}
inline bool isTimestamp(const T_timestamp &ts)
{
if (ts.tv_sec == 0 && ts.tv_usec == 0)
{
return 0;
}
return 1;
}
inline void subMsTimestamp(T_timestamp &ts, long ms)
{
ts.tv_sec -= ms / 1000;
ts.tv_usec -= (ms % 1000) * 1000;
}
inline void addMsTimestamp(T_timestamp &ts, long ms)
{
ts.tv_sec += ms / 1000;
ts.tv_usec += (ms % 1000) * 1000;
}
//
// Check the difference between timestamps.
// Return 0 if the system time went backward
// compared to the second timestamp, or the
// difference between the timestamps exceeds
// the given number of milliseconds.
//
inline int checkDiffTimestamp(const T_timestamp &ts1, const T_timestamp &ts2,
long ms = 30000)
{
long diffTs = diffTimestamp(ts1, ts2);
if (diffTs < 0 || diffTs > ms)
{
return 0;
}
return 1;
}
//
// Return a string representing the timestamp.
//
std::string strTimestamp(const T_timestamp &ts);
std::string strMsTimestamp(const T_timestamp &ts);
inline std::string strTimestamp()
{
return strTimestamp(getTimestamp());
}
inline std::string strMsTimestamp()
{
return strMsTimestamp(getTimestamp());
}
//
// Update the current timestamp.
//
inline T_timestamp getNewTimestamp()
{
#ifdef TEST
T_timestamp ts;
gettimeofday(&ts, NULL);
*logofs << "Timestamp: Updating the current timestamp at "
<< strMsTimestamp(ts) << ".\n" << logofs_flush;
long diffTs = diffTimestamp(timestamp, ts);
if (diffTs > DRIFT_TIMESTAMP)
{
*logofs << "Timestamp: WARNING! Time difference since the "
<< "old timestamp is " << diffTs << "ms.\n"
<< logofs_flush;
}
#endif
gettimeofday(×tamp, NULL);
return timestamp;
}
#endif /* Timestamp_H */
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