mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-21 13:34:40 +03:00
130 lines
2.6 KiB
C
130 lines
2.6 KiB
C
/*
|
|
* Copyright (C) 2006 Rackable Systems All rights reserved.
|
|
*
|
|
* This file is part of LVM2.
|
|
*
|
|
* This copyrighted material is made available to anyone wishing to use,
|
|
* modify, copy, or redistribute it subject to the terms and conditions
|
|
* of the GNU Lesser General Public License v.2.1.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
/*
|
|
* Abstract out the time methods used so they can be adjusted later -
|
|
* the results of these routines should stay in-core. This implementation
|
|
* requires librt.
|
|
*/
|
|
|
|
#include "lib.h"
|
|
#include <stdlib.h>
|
|
|
|
#include "timestamp.h"
|
|
|
|
/*
|
|
* The realtime section uses clock_gettime with the CLOCK_MONOTONIC
|
|
* parameter to prevent issues with time warps
|
|
*/
|
|
#ifdef HAVE_REALTIME
|
|
|
|
#include <time.h>
|
|
#include <bits/time.h>
|
|
|
|
struct timestamp {
|
|
struct timespec t;
|
|
};
|
|
|
|
struct timestamp *get_timestamp(void)
|
|
{
|
|
struct timestamp *ts = NULL;
|
|
|
|
if (!(ts = dm_malloc(sizeof(*ts))))
|
|
return_NULL;
|
|
|
|
if (clock_gettime(CLOCK_MONOTONIC, &ts->t)) {
|
|
log_sys_error("clock_gettime", "get_timestamp");
|
|
return NULL;
|
|
}
|
|
|
|
return ts;
|
|
}
|
|
|
|
/* cmp_timestamp: Compare two timestamps
|
|
*
|
|
* Return: -1 if t1 is less than t2
|
|
* 0 if t1 is equal to t2
|
|
* 1 if t1 is greater than t2
|
|
*/
|
|
int cmp_timestamp(struct timestamp *t1, struct timestamp *t2)
|
|
{
|
|
if(t1->t.tv_sec < t2->t.tv_sec)
|
|
return -1;
|
|
if(t1->t.tv_sec > t2->t.tv_sec)
|
|
return 1;
|
|
|
|
if(t1->t.tv_nsec < t2->t.tv_nsec)
|
|
return -1;
|
|
if(t1->t.tv_nsec > t2->t.tv_nsec)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#else /* ! HAVE_REALTIME */
|
|
|
|
/*
|
|
* The !realtime section just uses gettimeofday and is therefore subject
|
|
* to ntp-type time warps - not sure if should allow that.
|
|
*/
|
|
|
|
#include <sys/time.h>
|
|
|
|
struct timestamp {
|
|
struct timeval t;
|
|
};
|
|
|
|
struct timestamp *get_timestamp(void)
|
|
{
|
|
struct timestamp *ts = NULL;
|
|
|
|
if (!(ts = dm_malloc(sizeof(*ts))))
|
|
return_NULL;
|
|
|
|
if (gettimeofday(&ts->t, NULL)) {
|
|
log_sys_error("gettimeofday", "get_timestamp");
|
|
return NULL;
|
|
}
|
|
|
|
return ts;
|
|
}
|
|
|
|
/* cmp_timestamp: Compare two timestamps
|
|
*
|
|
* Return: -1 if t1 is less than t2
|
|
* 0 if t1 is equal to t2
|
|
* 1 if t1 is greater than t2
|
|
*/
|
|
int cmp_timestamp(struct timestamp *t1, struct timestamp *t2)
|
|
{
|
|
if(t1->t.tv_sec < t2->t.tv_sec)
|
|
return -1;
|
|
if(t1->t.tv_sec > t2->t.tv_sec)
|
|
return 1;
|
|
|
|
if(t1->t.tv_usec < t2->t.tv_usec)
|
|
return -1;
|
|
if(t1->t.tv_usec > t2->t.tv_usec)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif /* HAVE_REALTIME */
|
|
|
|
void destroy_timestamp(struct timestamp *t)
|
|
{
|
|
dm_free(t);
|
|
}
|