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37bd6c8e JG |
1 | #!/usr/bin/env python3 |
2 | # | |
9d16b343 | 3 | # Copyright (C) 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
37bd6c8e | 4 | # |
9d16b343 | 5 | # SPDX-License-Identifier: GPL-2.0-only |
37bd6c8e JG |
6 | |
7 | import os | |
8 | import subprocess | |
9 | import re | |
10 | import shutil | |
11 | import sys | |
12 | ||
13 | test_path = os.path.dirname(os.path.abspath(__file__)) + "/" | |
14 | test_utils_path = test_path | |
15 | for i in range(4): | |
16 | test_utils_path = os.path.dirname(test_utils_path) | |
17 | test_utils_path = test_utils_path + "/utils" | |
18 | sys.path.append(test_utils_path) | |
19 | from test_utils import * | |
20 | ||
21 | ||
22 | NR_TESTS = 6 | |
23 | current_test = 1 | |
24 | print("1..{0}".format(NR_TESTS)) | |
25 | ||
26 | # Check if a sessiond is running... bail out if none found. | |
27 | if session_daemon_alive() == 0: | |
28 | 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.") | |
29 | ||
30 | session_info = create_session() | |
31 | enable_ust_tracepoint_event(session_info, "ust_tests_fork*") | |
32 | start_session(session_info) | |
33 | ||
34 | fork_process = subprocess.Popen([test_path + "fork", test_path + "fork2"], stdout=subprocess.PIPE, stderr=subprocess.PIPE) | |
37bd6c8e JG |
35 | parent_pid = -1 |
36 | child_pid = -1 | |
37 | for line in fork_process.stdout: | |
38 | line = line.decode('utf-8').replace("\n", "") | |
39 | match = re.search(r"child_pid (\d+)", line) | |
40 | if match: | |
41 | child_pid = match.group(1) | |
42 | match = re.search(r"parent_pid (\d+)", line) | |
43 | if match: | |
44 | parent_pid = match.group(1) | |
45 | ||
3e198d90 JG |
46 | fork_process.wait() |
47 | ||
37bd6c8e JG |
48 | print_test_result(fork_process.returncode == 0, current_test, "Fork test application exited normally") |
49 | current_test += 1 | |
50 | ||
51 | stop_session(session_info) | |
52 | ||
53 | # Check both events (normal exit and suicide messages) are present in the resulting trace | |
54 | try: | |
55 | babeltrace_process = subprocess.Popen(["babeltrace", session_info.trace_path], stdout=subprocess.PIPE, stderr=subprocess.PIPE) | |
56 | except FileNotFoundError: | |
57 | bail("Could not open babeltrace. Please make sure it is installed.", session_info) | |
58 | ||
59 | event_lines = [] | |
60 | for event_line in babeltrace_process.stdout: | |
61 | event_line = event_line.decode('utf-8').replace("\n", "") | |
62 | if re.search(r"warning", event_line) is not None or re.search(r"error", event_line) is not None: | |
63 | print( "# " + event_line ) | |
64 | else: | |
65 | event_lines.append(event_line) | |
66 | ||
67 | babeltrace_process.wait() | |
68 | ||
69 | print_test_result(babeltrace_process.returncode == 0, current_test, "Resulting trace is readable") | |
70 | current_test += 1 | |
71 | ||
72 | if babeltrace_process.returncode != 0: | |
73 | bail("Unreadable trace; can't proceed with analysis.", session_info) | |
74 | ||
75 | event_before_fork = False | |
76 | event_after_fork_parent = False | |
77 | event_after_fork_child = False | |
78 | event_after_exec = False | |
79 | ||
80 | for event_line in event_lines: | |
81 | match = re.search(r".*pid = (\d+)", event_line) | |
82 | if match is not None: | |
83 | event_pid = match.group(1) | |
84 | else: | |
85 | continue | |
86 | ||
87 | if re.search(r"before_fork", event_line): | |
88 | event_before_fork = (event_pid == parent_pid) | |
89 | if re.search(r"after_fork_parent", event_line): | |
90 | event_after_fork_parent = (event_pid == parent_pid) | |
91 | if re.search(r"after_fork_child", event_line): | |
92 | event_after_fork_child = (event_pid == child_pid) | |
93 | if re.search(r"after_exec", event_line): | |
94 | event_after_exec = (event_pid == child_pid) | |
95 | ||
96 | print_test_result(event_before_fork, current_test, "before_fork event logged by parent process found in trace") | |
97 | current_test += 1 | |
98 | print_test_result(event_after_fork_parent, current_test, "after_fork_parent event logged by parent process found in trace") | |
99 | current_test += 1 | |
100 | print_test_result(event_after_fork_child, current_test, "after_fork_child event logged by child process found in trace") | |
101 | current_test += 1 | |
102 | print_test_result(event_after_exec, current_test, "after_exec event logged by child process found in trace") | |
103 | current_test += 1 | |
104 | ||
105 | shutil.rmtree(session_info.tmp_directory) |