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37bd6c8e JG |
1 | #!/usr/bin/env python3 |
2 | # | |
3 | # Copyright (C) - 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
4 | # | |
5 | # This program is free software; you can redistribute it and/or modify it | |
6 | # under the terms of the GNU General Public License, version 2 only, as | |
7 | # published by the Free Software Foundation. | |
8 | # | |
9 | # This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | # more details. | |
13 | # | |
14 | # You should have received a copy of the GNU General Public License along with | |
15 | # this program; if not, write to the Free Software Foundation, Inc., 51 | |
16 | # Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
17 | ||
18 | import os | |
19 | import subprocess | |
20 | import re | |
21 | import shutil | |
22 | import sys | |
23 | ||
24 | test_path = os.path.dirname(os.path.abspath(__file__)) + "/" | |
25 | test_utils_path = test_path | |
26 | for i in range(4): | |
27 | test_utils_path = os.path.dirname(test_utils_path) | |
28 | test_utils_path = test_utils_path + "/utils" | |
29 | sys.path.append(test_utils_path) | |
30 | from test_utils import * | |
31 | ||
32 | ||
33 | NR_TESTS = 6 | |
34 | current_test = 1 | |
35 | print("1..{0}".format(NR_TESTS)) | |
36 | ||
37 | # Check if a sessiond is running... bail out if none found. | |
38 | if session_daemon_alive() == 0: | |
39 | bail("No sessiond running. Please make sure you are running this test with the \"run\" shell script and verify that the lttng tools are properly installed.") | |
40 | ||
41 | session_info = create_session() | |
42 | enable_ust_tracepoint_event(session_info, "ust_tests_fork*") | |
43 | start_session(session_info) | |
44 | ||
45 | fork_process = subprocess.Popen([test_path + "fork", test_path + "fork2"], stdout=subprocess.PIPE, stderr=subprocess.PIPE) | |
46 | ||
47 | if sys.version_info >= (3, 3): | |
48 | try: | |
49 | fork_process.wait(5) | |
50 | except TimeoutExpired: | |
51 | fork_process.kill() | |
52 | bail("Failed to run fork test application (time out)", session_info) | |
53 | else: | |
54 | fork_process.wait() | |
55 | ||
56 | parent_pid = -1 | |
57 | child_pid = -1 | |
58 | for line in fork_process.stdout: | |
59 | line = line.decode('utf-8').replace("\n", "") | |
60 | match = re.search(r"child_pid (\d+)", line) | |
61 | if match: | |
62 | child_pid = match.group(1) | |
63 | match = re.search(r"parent_pid (\d+)", line) | |
64 | if match: | |
65 | parent_pid = match.group(1) | |
66 | ||
67 | print_test_result(fork_process.returncode == 0, current_test, "Fork test application exited normally") | |
68 | current_test += 1 | |
69 | ||
70 | stop_session(session_info) | |
71 | ||
72 | # Check both events (normal exit and suicide messages) are present in the resulting trace | |
73 | try: | |
74 | babeltrace_process = subprocess.Popen(["babeltrace", session_info.trace_path], stdout=subprocess.PIPE, stderr=subprocess.PIPE) | |
75 | except FileNotFoundError: | |
76 | bail("Could not open babeltrace. Please make sure it is installed.", session_info) | |
77 | ||
78 | event_lines = [] | |
79 | for event_line in babeltrace_process.stdout: | |
80 | event_line = event_line.decode('utf-8').replace("\n", "") | |
81 | if re.search(r"warning", event_line) is not None or re.search(r"error", event_line) is not None: | |
82 | print( "# " + event_line ) | |
83 | else: | |
84 | event_lines.append(event_line) | |
85 | ||
86 | babeltrace_process.wait() | |
87 | ||
88 | print_test_result(babeltrace_process.returncode == 0, current_test, "Resulting trace is readable") | |
89 | current_test += 1 | |
90 | ||
91 | if babeltrace_process.returncode != 0: | |
92 | bail("Unreadable trace; can't proceed with analysis.", session_info) | |
93 | ||
94 | event_before_fork = False | |
95 | event_after_fork_parent = False | |
96 | event_after_fork_child = False | |
97 | event_after_exec = False | |
98 | ||
99 | for event_line in event_lines: | |
100 | match = re.search(r".*pid = (\d+)", event_line) | |
101 | if match is not None: | |
102 | event_pid = match.group(1) | |
103 | else: | |
104 | continue | |
105 | ||
106 | if re.search(r"before_fork", event_line): | |
107 | event_before_fork = (event_pid == parent_pid) | |
108 | if re.search(r"after_fork_parent", event_line): | |
109 | event_after_fork_parent = (event_pid == parent_pid) | |
110 | if re.search(r"after_fork_child", event_line): | |
111 | event_after_fork_child = (event_pid == child_pid) | |
112 | if re.search(r"after_exec", event_line): | |
113 | event_after_exec = (event_pid == child_pid) | |
114 | ||
115 | print_test_result(event_before_fork, current_test, "before_fork event logged by parent process found in trace") | |
116 | current_test += 1 | |
117 | print_test_result(event_after_fork_parent, current_test, "after_fork_parent event logged by parent process found in trace") | |
118 | current_test += 1 | |
119 | print_test_result(event_after_fork_child, current_test, "after_fork_child event logged by child process found in trace") | |
120 | current_test += 1 | |
121 | print_test_result(event_after_exec, current_test, "after_exec event logged by child process found in trace") | |
122 | current_test += 1 | |
123 | ||
124 | shutil.rmtree(session_info.tmp_directory) |