common/usdt/tst.noreapring.ksh

	tst.noreapring.ksh revision a386cc11a86ecb60f5a48078d22c1500e2ad003e
#
# 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 http://www.opensolaris.org/os/licensing.
# 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
#

#
# Copyright (c) 2011, Joyent, Inc. All rights reserved.
#

if [ $# != 1 ]; then
    echo expected one argument: '<'dtrace-path'>'
    exit 2
fi

dtrace=$1
DIR=/var/tmp/dtest.$$

mkdir $DIR
cd $DIR

cat > test.c <<EOF
#include <unistd.h>
#include <sys/sdt.h>

int
main(int argc, char **argv)
{
    DTRACE_PROBE(test_prov, probe1);
}
EOF

cat > prov.d <<EOF
provider test_prov {
    probe probe1();
};
EOF

gcc -m32 -c test.c
if [ $? -ne 0 ]; then
    print -u2 "failed to compile test.c"
    exit 1
fi
$dtrace -G -32 -s prov.d test.o
if [ $? -ne 0 ]; then
    print -u2 "failed to create DOF"
    exit 1
fi

gcc -m32 -o test test.o prov.o
if [ $? -ne 0 ]; then
    print -u2 "failed to link final executable"
    exit 1
fi

script()
{
    $dtrace -Zwqs /dev/stdin <<EOF
    test_prov*:::
    {
        probeid = id;
    }

    tick-1sec
    /probeid == 0/
    {
        printf("launching test\n");
        system("./test");
    }

    tick-1sec
    /probeid != 0/
    {
        printf("attempting re-enabling\n");
        system("dtrace -e -x errtags -i %d", probeid);
        attempts++;
    }

    tick-1sec
    /attempts > 10/
    {
        exit(0);
    }
EOF
}

$dtrace -x bufpolicy=ring -ZwqP test_prov\* > /dev/null 2>&1 &
background=$!
echo launched ring buffered enabling as pid $background
script 2>&1 | tee test.out

#
# It should be true that our probe was not reaped after the provider was made
# defunct: the active ring buffer in the earlier enabling prevents reaping of
# any of the earlier enabling's ECBs.
#
status=0

if grep D_PDESC_INVAL test.out 2> /dev/null 1>&2 ; then
    status=1
else
    grep D_PROC_GRAB test.out 2> /dev/null 1>&2
    status=$?
fi

kill $background
cd /
/usr/bin/rm -rf $DIR

exit $status