media/webrtc/trunk/build/android/pylib/sharded_tests_queue.py@8bccb770b82d (annotated)
media/webrtc/trunk/build/android/pylib/sharded_tests_queue.py
Wed, 31 Dec 2014 13:27:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 13:27:57 +0100
- branch
- TOR_BUG_3246
- changeset 6
- 8bccb770b82d
- permissions
- -rw-r--r--
Ignore runtime configuration files generated during quality assurance.
| michael@0 | 1 | # Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| michael@0 | 2 | # Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 3 | # found in the LICENSE file. |
| michael@0 | 4 | |
| michael@0 | 5 | |
| michael@0 | 6 | """A module that contains a queue for running sharded tests.""" |
| michael@0 | 7 | |
| michael@0 | 8 | import multiprocessing |
| michael@0 | 9 | |
| michael@0 | 10 | |
| michael@0 | 11 | class ShardedTestsQueue(object): |
| michael@0 | 12 | """A queue for managing pending tests across different runners. |
| michael@0 | 13 | |
| michael@0 | 14 | This class should only be used when sharding. |
| michael@0 | 15 | |
| michael@0 | 16 | Attributes: |
| michael@0 | 17 | num_devices: an integer; the number of attached Android devices. |
| michael@0 | 18 | tests: a list of tests to be run. |
| michael@0 | 19 | tests_queue: if sharding, a JoinableQueue object that holds tests from |
| michael@0 | 20 | |tests|. Otherwise, a list holding tests. |
| michael@0 | 21 | results_queue: a Queue object to hold TestResults objects. |
| michael@0 | 22 | """ |
| michael@0 | 23 | _STOP_SENTINEL = 'STOP' # sentinel value for iter() |
| michael@0 | 24 | |
| michael@0 | 25 | def __init__(self, num_devices, tests): |
| michael@0 | 26 | self.num_devices = num_devices |
| michael@0 | 27 | self.tests_queue = multiprocessing.Queue() |
| michael@0 | 28 | for test in tests: |
| michael@0 | 29 | self.tests_queue.put(test) |
| michael@0 | 30 | for _ in xrange(self.num_devices): |
| michael@0 | 31 | self.tests_queue.put(ShardedTestsQueue._STOP_SENTINEL) |
| michael@0 | 32 | |
| michael@0 | 33 | def __iter__(self): |
| michael@0 | 34 | """Returns an iterator with the test cases.""" |
| michael@0 | 35 | return iter(self.tests_queue.get, ShardedTestsQueue._STOP_SENTINEL) |
