3 # Copyright (C) - 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com>
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.
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
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.
24 test_path
= os
.path
.dirname(os
.path
.abspath(__file__
)) + "/"
25 test_utils_path
= test_path
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 *
35 print("1..{0}".format(NR_TESTS
))
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.")
41 session_info
= create_session()
42 enable_ust_tracepoint_event(session_info
, "ust_tests_fork*")
43 start_session(session_info
)
45 fork_process
= subprocess
.Popen([test_path
+ "fork", test_path
+ "fork2"], stdout
=subprocess
.PIPE
, stderr
=subprocess
.PIPE
)
47 if sys
.version_info
>= (3, 3):
50 except subprocess
.TimeoutExpired
:
52 bail("Failed to run fork test application (time out)", session_info
)
58 for line
in fork_process
.stdout
:
59 line
= line
.decode('utf-8').replace("\n", "")
60 match
= re
.search(r
"child_pid (\d+)", line
)
62 child_pid
= match
.group(1)
63 match
= re
.search(r
"parent_pid (\d+)", line
)
65 parent_pid
= match
.group(1)
67 print_test_result(fork_process
.returncode
== 0, current_test
, "Fork test application exited normally")
70 stop_session(session_info
)
72 # Check both events (normal exit and suicide messages) are present in the resulting trace
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
)
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
)
84 event_lines
.append(event_line
)
86 babeltrace_process
.wait()
88 print_test_result(babeltrace_process
.returncode
== 0, current_test
, "Resulting trace is readable")
91 if babeltrace_process
.returncode
!= 0:
92 bail("Unreadable trace; can't proceed with analysis.", session_info
)
94 event_before_fork
= False
95 event_after_fork_parent
= False
96 event_after_fork_child
= False
97 event_after_exec
= False
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)
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
)
115 print_test_result(event_before_fork
, current_test
, "before_fork event logged by parent process found in trace")
117 print_test_result(event_after_fork_parent
, current_test
, "after_fork_parent event logged by parent process found in trace")
119 print_test_result(event_after_fork_child
, current_test
, "after_fork_child event logged by child process found in trace")
121 print_test_result(event_after_exec
, current_test
, "after_exec event logged by child process found in trace")
124 shutil
.rmtree(session_info
.tmp_directory
)
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