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#!/bin/ksh -p
#
# CDDL HEADER START
#
# This file and its contents are supplied under the terms of the
# Common Development and Distribution License ("CDDL"), version 1.0.
# You may only use this file in accordance with the terms of version
# 1.0 of the CDDL.
#
# A full copy of the text of the CDDL should have accompanied this
# source. A copy of the CDDL is also available via the Internet at
# http://www.illumos.org/license/CDDL.
#
# CDDL HEADER END
#
#
# Copyright (c) 2012 by Delphix. All rights reserved.
#
############################################################################
# ASSERTION:
# temporal option causes output to be sorted, even when some
# buffers are empty
#
# SECTION: Pragma
#
# NOTES: The temporal option has no effect on a single-CPU system, so
# this needs to be run on a multi-CPU system to effectively test the
# temporal option.
#
############################################################################
if [ $# != 1 ]; then
echo expected one argument: '<'dtrace-path'>'
exit 2
fi
dtrace=$1
file=/tmp/out.$$
rm -f $file
$dtrace -o $file -s /dev/stdin <<EOF
#pragma D option quiet
#pragma D option destructive
#pragma D option temporal
#pragma D option switchrate=1000hz
/*
* Use two enablings of the same probe, so that cpu 0 will always
* record its data just a little bit before the other cpus.
* We don't want to use the chill() action in the same enabling
* that we record the timestamp, because chill() causes the
* timestamp to be re-read, and thus not match the timestamp
* which libdtrace uses to sort the records.
*/
profile-401
/cpu == 0/
{
printf("%d\n", timestamp);
}
profile-401
/cpu != 0/
{
chill(1000); /* one microsecond */
}
profile-401
/cpu != 0/
{
printf("%d\n", timestamp);
}
tick-1s
/k++ == 10/
{
printf("%d\n", timestamp);
exit(0);
}
EOF
status=$?
if [ "$status" -ne 0 ]; then
echo $tst: dtrace failed
exit $status
fi
# dtrace outputs a blank line at the end, which will sort to the beginning,
# so use sed to remove the blank line.
sed '$d' $file > $file.2
sort -n $file.2 | diff $file.2 -
status=$?
if [ "$status" -ne 0 ]; then
echo $tst: output is not sorted
exit $status
fi
exit $status
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