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/*-------------------------------------------------------------------------
*
* gtm_time.c
* Timestamp handling on GTM
*
* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
* Portions Copyright (c) 2010-2012 Postgres-XC Development Group
*
*
* IDENTIFICATION
* $PostgreSQL$
*
*-------------------------------------------------------------------------
*/
#include "gtm/gtm.h"
#include "gtm/gtm_c.h"
#include "gtm/gtm_time.h"
#include <time.h>
#include <sys/time.h>
GTM_Timestamp
GTM_TimestampGetCurrent(void)
{
struct timeval tp;
GTM_Timestamp result;
gettimeofday(&tp, NULL);
result = (GTM_Timestamp) tp.tv_sec -
((GTM_EPOCH_JDATE - UNIX_EPOCH_JDATE) * SECS_PER_DAY);
#ifdef HAVE_INT64_TIMESTAMP
result = (result * USECS_PER_SEC) + tp.tv_usec;
#else
result = result + (tp.tv_usec / 1000000.0);
#endif
return result;
}
/*
* TimestampDifference -- convert the difference between two timestamps
* into integer seconds and microseconds
*
* Both inputs must be ordinary finite timestamps (in current usage,
* they'll be results from GTM_TimestampGetCurrent()).
*
* We expect start_time <= stop_time. If not, we return zeroes; for current
* callers there is no need to be tense about which way division rounds on
* negative inputs.
*/
void
GTM_TimestampDifference(GTM_Timestamp start_time, GTM_Timestamp stop_time,
long *secs, int *microsecs)
{
GTM_Timestamp diff = stop_time - start_time;
if (diff <= 0)
{
*secs = 0;
*microsecs = 0;
}
else
{
#ifdef HAVE_INT64_TIMESTAMP
*secs = (long) (diff / USECS_PER_SEC);
*microsecs = (int) (diff % USECS_PER_SEC);
#else
*secs = (long) diff;
*microsecs = (int) ((diff - *secs) * 1000000.0);
#endif
}
}
/*
* GTM_TimestampDifferenceExceeds -- report whether the difference between two
* timestamps is >= a threshold (expressed in milliseconds)
*
* Both inputs must be ordinary finite timestamps (in current usage,
* they'll be results from GTM_TimestampDifferenceExceeds()).
*/
bool
GTM_TimestampDifferenceExceeds(GTM_Timestamp start_time,
GTM_Timestamp stop_time,
int msec)
{
GTM_Timestamp diff = stop_time - start_time;
#ifdef HAVE_INT64_TIMESTAMP
return (diff >= msec * INT64CONST(1000));
#else
return (diff * 1000.0 >= msec);
#endif
}
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