freebsd-dev/include/sys/zfs_delay.h
Tino Reichardt 1d3ba0bf01
Replace dead opensolaris.org license link
The commit replaces all findings of the link:
http://www.opensolaris.org/os/licensing with this one:
https://opensource.org/licenses/CDDL-1.0

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tino Reichardt <milky-zfs@mcmilk.de>
Closes #13619
2022-07-11 14:16:13 -07:00

42 lines
1.2 KiB
C

/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or https://opensource.org/licenses/CDDL-1.0.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
#ifndef _SYS_FS_ZFS_DELAY_H
#define _SYS_FS_ZFS_DELAY_H
#include <sys/timer.h>
/*
* Generic wrapper to sleep until a given time.
*/
#define zfs_sleep_until(wakeup) \
do { \
hrtime_t delta = wakeup - gethrtime(); \
\
if (delta > 0) { \
unsigned long delta_us; \
delta_us = delta / (NANOSEC / MICROSEC); \
usleep_range(delta_us, delta_us + 100); \
} \
} while (0)
#endif /* _SYS_FS_ZFS_DELAY_H */