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#!/usr/bin/env python
# Copyright (C) 2011 Google Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
"""
The TestRunner2 package is an alternate implementation of the TestRunner
class that uses the manager_worker_broker module to send sets of tests to
workers and receive their completion messages accordingly.
"""
import logging
import time
from webkitpy.tool import grammar
from webkitpy.layout_tests.layout_package import manager_worker_broker
from webkitpy.layout_tests.layout_package import test_runner
from webkitpy.layout_tests.layout_package import worker
_log = logging.getLogger(__name__)
class _WorkerState(object):
"""A class for the TestRunner/manager to use to track the current state
of the workers."""
def __init__(self, number, worker_connection):
self.worker_connection = worker_connection
self.number = number
self.done = False
self.current_test_name = None
self.next_timeout = None
self.wedged = False
self.stats = {}
self.stats['name'] = worker_connection.name
self.stats['num_tests'] = 0
self.stats['total_time'] = 0
def __repr__(self):
return "_WorkerState(" + str(self.__dict__) + ")"
class TestRunner2(test_runner.TestRunner):
def __init__(self, port, options, printer):
test_runner.TestRunner.__init__(self, port, options, printer)
self._all_results = []
self._group_stats = {}
self._current_result_summary = None
# This maps worker names to the state we are tracking for each of them.
self._worker_states = {}
def is_done(self):
worker_states = self._worker_states.values()
return worker_states and all(self._worker_is_done(worker_state) for worker_state in worker_states)
def _worker_is_done(self, worker_state):
t = time.time()
if worker_state.done or worker_state.wedged:
return True
next_timeout = worker_state.next_timeout
WEDGE_PADDING = 40.0
if next_timeout and t > next_timeout + WEDGE_PADDING:
_log.error('')
worker_state.worker_connection.log_wedged_worker(worker_state.current_test_name)
_log.error('')
worker_state.wedged = True
return True
return False
def name(self):
return 'TestRunner2'
def _run_tests(self, file_list, result_summary):
"""Runs the tests in the file_list.
Return: A tuple (interrupted, keyboard_interrupted, thread_timings,
test_timings, individual_test_timings)
interrupted is whether the run was interrupted
keyboard_interrupted is whether someone typed Ctrl^C
thread_timings is a list of dicts with the total runtime
of each thread with 'name', 'num_tests', 'total_time' properties
test_timings is a list of timings for each sharded subdirectory
of the form [time, directory_name, num_tests]
individual_test_timings is a list of run times for each test
in the form {filename:filename, test_run_time:test_run_time}
result_summary: summary object to populate with the results
"""
self._current_result_summary = result_summary
self._all_results = []
self._group_stats = {}
self._worker_states = {}
keyboard_interrupted = False
interrupted = False
thread_timings = []
self._printer.print_update('Sharding tests ...')
test_lists = self._shard_tests(file_list,
(int(self._options.child_processes) > 1) and not self._options.experimental_fully_parallel)
num_workers = self._num_workers(len(test_lists))
manager_connection = manager_worker_broker.get(self._port, self._options,
self, worker.Worker)
if self._options.dry_run:
return (keyboard_interrupted, interrupted, thread_timings,
self._group_stats, self._all_results)
self._printer.print_update('Starting %s ...' %
grammar.pluralize('worker', num_workers))
for worker_number in xrange(num_workers):
worker_connection = manager_connection.start_worker(worker_number)
worker_state = _WorkerState(worker_number, worker_connection)
self._worker_states[worker_connection.name] = worker_state
# FIXME: If we start workers up too quickly, DumpRenderTree appears
# to thrash on something and time out its first few tests. Until
# we can figure out what's going on, sleep a bit in between
# workers.
time.sleep(0.1)
self._printer.print_update("Starting testing ...")
for test_list in test_lists:
manager_connection.post_message('test_list', test_list[0], test_list[1])
# We post one 'stop' message for each worker. Because the stop message
# are sent after all of the tests, and because each worker will stop
# reading messsages after receiving a stop, we can be sure each
# worker will get a stop message and hence they will all shut down.
for i in xrange(num_workers):
manager_connection.post_message('stop')
try:
while not self.is_done():
# We loop with a timeout in order to be able to detect wedged threads.
manager_connection.run_message_loop(delay_secs=1.0)
if any(worker_state.wedged for worker_state in self._worker_states.values()):
_log.error('')
_log.error('Remaining workers are wedged, bailing out.')
_log.error('')
else:
_log.debug('No wedged threads')
# Make sure all of the workers have shut down (if possible).
for worker_state in self._worker_states.values():
if not worker_state.wedged and worker_state.worker_connection.is_alive():
worker_state.worker_connection.join(0.5)
assert not worker_state.worker_connection.is_alive()
except KeyboardInterrupt:
_log.info("Interrupted, exiting")
self.cancel_workers()
keyboard_interrupted = True
except test_runner.TestRunInterruptedException, e:
_log.info(e.reason)
self.cancel_workers()
interrupted = True
except:
# Unexpected exception; don't try to clean up workers.
_log.info("Exception raised, exiting")
raise
thread_timings = [worker_state.stats for worker_state in self._worker_states.values()]
# FIXME: should this be a class instead of a tuple?
return (interrupted, keyboard_interrupted, thread_timings,
self._group_stats, self._all_results)
def cancel_workers(self):
for worker_state in self._worker_states.values():
worker_state.worker_connection.cancel()
def handle_started_test(self, source, test_info, hang_timeout):
worker_state = self._worker_states[source]
worker_state.current_test_name = self._port.relative_test_filename(test_info.filename)
worker_state.next_timeout = time.time() + hang_timeout
def handle_done(self, source):
worker_state = self._worker_states[source]
worker_state.done = True
def handle_exception(self, source, exception_info):
exception_type, exception_value, exception_traceback = exception_info
raise exception_type, exception_value, exception_traceback
def handle_finished_list(self, source, list_name, num_tests, elapsed_time):
self._group_stats[list_name] = (num_tests, elapsed_time)
def handle_finished_test(self, source, result, elapsed_time):
worker_state = self._worker_states[source]
worker_state.next_timeout = None
worker_state.current_test_name = None
worker_state.stats['total_time'] += elapsed_time
worker_state.stats['num_tests'] += 1
if worker_state.wedged:
# This shouldn't happen if we have our timeouts tuned properly.
_log.error("%s unwedged", source)
self._all_results.append(result)
self._update_summary_with_result(self._current_result_summary, result)
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