1#
2# CDDL HEADER START
3#
4# The contents of this file are subject to the terms of the
5# Common Development and Distribution License (the "License").
6# You may not use this file except in compliance with the License.
7#
8# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9# or http://www.opensolaris.org/os/licensing.
10# See the License for the specific language governing permissions
11# and limitations under the License.
12#
13# When distributing Covered Code, include this CDDL HEADER in each
14# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15# If applicable, add the following below this CDDL HEADER, with the
16# fields enclosed by brackets "[]" replaced with your own identifying
17# information: Portions Copyright [yyyy] [name of copyright owner]
18#
19# CDDL HEADER END
20#
21
22#
23# Copyright (c) 2011, Joyent, Inc. All rights reserved.
24#
25
26if [ $# != 1 ]; then
27	echo expected one argument: '<'dtrace-path'>'
28	exit 2
29fi
30
31dtrace=$1
32DIR=/var/tmp/dtest.$$
33
34mkdir $DIR
35cd $DIR
36
37cat > test.c <<EOF
38#include <unistd.h>
39#include <sys/sdt.h>
40
41int
42main(int argc, char **argv)
43{
44	DTRACE_PROBE(test_prov, probe1);
45}
46EOF
47
48cat > prov.d <<EOF
49provider test_prov {
50	probe probe1();
51};
52EOF
53
54cc -c test.c
55if [ $? -ne 0 ]; then
56	print -u2 "failed to compile test.c"
57	exit 1
58fi
59$dtrace -G -s prov.d test.o
60if [ $? -ne 0 ]; then
61	print -u2 "failed to create DOF"
62	exit 1
63fi
64cc -o test test.o prov.o
65if [ $? -ne 0 ]; then
66	print -u2 "failed to link final executable"
67	exit 1
68fi
69
70script()
71{
72	$dtrace -Zwqs /dev/stdin <<EOF
73
74	BEGIN
75	{
76		spec = speculation();
77		speculate(spec);
78		printf("this is speculative!\n");
79	}
80
81	test_prov*:::
82	{
83		probeid = id;
84	}
85
86	tick-1sec
87	/probeid == 0/
88	{
89		printf("launching test\n");
90		system("./test");
91	}
92
93	tick-1sec
94	/probeid != 0/
95	{
96		printf("attempting re-enabling\n");
97		system("dtrace -e -x errtags -i %d", probeid);
98		attempts++;
99	}
100
101	tick-1sec
102	/attempts > 10/
103	{
104		exit(0);
105	}
106EOF
107}
108
109script 2>&1 | tee test.out
110
111#
112# It should be true that our probe was not reaped after the provider was made
113# defunct: the speculative tracing action prevents reaping of any ECB in the
114# enabling.
115# 
116status=0
117
118if grep D_PDESC_INVAL test.out 2> /dev/null 1>&2 ; then
119	status=1
120else
121	grep D_PROC_GRAB test.out 2> /dev/null 1>&2
122	status=$?
123fi
124
125cd /
126rm -rf $DIR
127
128exit $status
129