+# timeout which controls how long the child has to finish after seeing
+# a core dump in test temporary directory. If this is exceeded, parent assumes
+# that child process is stuck (e.g. waiting for shm mutex, which will never
+# get unlocked) and kill the child
+core_timeout = 3
+
+
+def test_runner_wrapper(suite, keep_alive_pipe, result_pipe, failed_pipe):
+ result = not VppTestRunner(
+ keep_alive_pipe=keep_alive_pipe,
+ failed_pipe=failed_pipe,
+ verbosity=verbose,
+ failfast=failfast).run(suite).wasSuccessful()
+ result_pipe.send(result)
+ result_pipe.close()
+ keep_alive_pipe.close()
+ failed_pipe.close()
+
+
+class add_to_suite_callback:
+ def __init__(self, suite):
+ self.suite = suite
+
+ def __call__(self, file_name, cls, method):
+ suite.addTest(cls(method))
+
+
+class Filter_by_class_list:
+ def __init__(self, class_list):
+ self.class_list = class_list
+
+ def __call__(self, file_name, class_name, func_name):
+ return class_name in self.class_list
+
+
+def suite_from_failed(suite, failed):
+ filter_cb = Filter_by_class_list(failed)
+ return VppTestRunner.filter_tests(suite, filter_cb)
+
+
+def run_forked(suite):
+ keep_alive_parent_end, keep_alive_child_end = Pipe(duplex=False)
+ result_parent_end, result_child_end = Pipe(duplex=False)
+ failed_parent_end, failed_child_end = Pipe(duplex=False)
+
+ child = Process(target=test_runner_wrapper,
+ args=(suite, keep_alive_child_end, result_child_end,
+ failed_child_end))
+ child.start()
+ last_test_temp_dir = None
+ last_test_vpp_binary = None
+ last_test = None
+ result = None
+ failed = set()
+ last_heard = time.time()
+ core_detected_at = None
+ debug_core = os.getenv("DEBUG", "").lower() == "core"
+ while True:
+ readable = select.select([keep_alive_parent_end.fileno(),
+ result_parent_end.fileno(),
+ failed_parent_end.fileno(),
+ ],
+ [], [], 1)[0]
+ if result_parent_end.fileno() in readable:
+ result = result_parent_end.recv()
+ break
+ if keep_alive_parent_end.fileno() in readable:
+ while keep_alive_parent_end.poll():
+ last_test, last_test_vpp_binary,\
+ last_test_temp_dir, vpp_pid = keep_alive_parent_end.recv()
+ last_heard = time.time()
+ if failed_parent_end.fileno() in readable:
+ while failed_parent_end.poll():
+ failed_test = failed_parent_end.recv()
+ failed.add(failed_test.__name__)
+ last_heard = time.time()
+ fail = False
+ if last_heard + test_timeout < time.time() and \
+ not os.path.isfile("%s/_core_handled" % last_test_temp_dir):
+ fail = True
+ global_logger.critical("Timeout while waiting for child test "
+ "runner process (last test running was "
+ "`%s' in `%s')!" %
+ (last_test, last_test_temp_dir))
+ elif not child.is_alive():
+ fail = True
+ global_logger.critical("Child python process unexpectedly died "
+ "(last test running was `%s' in `%s')!" %
+ (last_test, last_test_temp_dir))
+ elif last_test_temp_dir and last_test_vpp_binary:
+ core_path = "%s/core" % last_test_temp_dir
+ if os.path.isfile(core_path):
+ if core_detected_at is None:
+ core_detected_at = time.time()
+ elif core_detected_at + core_timeout < time.time():
+ if not os.path.isfile(
+ "%s/_core_handled" % last_test_temp_dir):
+ global_logger.critical(
+ "Child python process unresponsive and core-file "
+ "exists in test temporary directory!")
+ fail = True
+
+ if fail:
+ failed_dir = os.getenv('VPP_TEST_FAILED_DIR')
+ lttd = last_test_temp_dir.split("/")[-1]
+ link_path = '%s%s-FAILED' % (failed_dir, lttd)
+ global_logger.error("Creating a link to the failed " +
+ "test: %s -> %s" % (link_path, lttd))
+ try:
+ os.symlink(last_test_temp_dir, link_path)
+ except Exception:
+ pass
+ api_post_mortem_path = "/tmp/api_post_mortem.%d" % vpp_pid
+ if os.path.isfile(api_post_mortem_path):
+ global_logger.error("Copying api_post_mortem.%d to %s" %
+ (vpp_pid, last_test_temp_dir))
+ shutil.copy2(api_post_mortem_path, last_test_temp_dir)
+ if last_test_temp_dir and last_test_vpp_binary:
+ core_path = "%s/core" % last_test_temp_dir
+ if os.path.isfile(core_path):
+ global_logger.error("Core-file exists in test temporary "
+ "directory: %s!" % core_path)
+ check_core_path(global_logger, core_path)
+ global_logger.debug("Running `file %s':" % core_path)
+ try:
+ info = check_output(["file", core_path])
+ global_logger.debug(info)
+ except CalledProcessError as e:
+ global_logger.error(
+ "Could not run `file' utility on core-file, "
+ "rc=%s" % e.returncode)
+ pass
+ if debug_core:
+ spawn_gdb(last_test_vpp_binary, core_path,
+ global_logger)
+ child.terminate()
+ result = -1
+ break
+ keep_alive_parent_end.close()
+ result_parent_end.close()
+ failed_parent_end.close()
+ return result, failed