tests/regression/ust/libc-wrapper/test_libc-wrapper.py

   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 = 4
  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, "lttng_ust_libc*")
  43 start_session(session_info)
  44
  45 malloc_process = subprocess.Popen(test_path + "prog", stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
  46 malloc_process.wait()
  47
  48 print_test_result(malloc_process.returncode == 0, current_test, "Test application exited normally")
  49 current_test += 1
  50
  51 stop_session(session_info)
  52
  53 # Check for malloc events 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 malloc_event_found = False
  60 free_event_found = False
  61
  62 for event_line in babeltrace_process.stdout:
  63     # Let babeltrace finish to get the return code
  64     if malloc_event_found and free_event_found:
  65         continue
  66
  67     event_line = event_line.decode('utf-8').replace("\n", "")
  68     if re.search(r".*lttng_ust_libc:malloc.*", event_line) is not None:
  69         malloc_event_found = True
  70
  71     if re.search(r".*lttng_ust_libc:free.*", event_line) is not None:
  72         free_event_found = True
  73
  74 babeltrace_process.wait()
  75
  76 print_test_result(babeltrace_process.returncode == 0, current_test, "Resulting trace is readable")
  77 current_test += 1
  78
  79 print_test_result(malloc_event_found, current_test, "lttng_ust_libc:malloc event found in resulting trace")
  80 current_test += 1
  81
  82 print_test_result(free_event_found, current_test, "lttng_ust_libc:free event found in resulting trace")
  83 current_test += 1
  84
  85 shutil.rmtree(session_info.tmp_directory)