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# Copyright 2018 the V8 project authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import random
from collections import defaultdict
from . import base
from ..utils import random_utils
class SeedProc(base.TestProcProducer):
def __init__(self, count, seed=None, parallel_subtests=1):
"""
Args:
count: How many subtests with different seeds to create for each test.
0 means infinite.
seed: seed to use. None means random seed for each subtest.
parallel_subtests: How many subtest of each test to run at the same time.
"""
super(SeedProc, self).__init__('Seed')
self._count = count
self._seed = seed
self._last_idx = defaultdict(int)
self._todo = defaultdict(int)
self._parallel_subtests = parallel_subtests
if count:
self._parallel_subtests = min(self._parallel_subtests, count)
def setup(self, requirement=base.DROP_RESULT):
super(SeedProc, self).setup(requirement)
# SeedProc is optimized for dropping the result
assert requirement == base.DROP_RESULT
def _next_test(self, test):
for _ in xrange(0, self._parallel_subtests):
self._try_send_next_test(test)
def _result_for(self, test, subtest, result):
self._todo[test.procid] -= 1
self._try_send_next_test(test)
def _try_send_next_test(self, test):
def create_subtest(idx):
seed = self._seed or random_utils.random_seed()
return self._create_subtest(test, idx, random_seed=seed)
num = self._last_idx[test.procid]
if not self._count or num < self._count:
num += 1
self._send_test(create_subtest(num))
self._todo[test.procid] += 1
self._last_idx[test.procid] = num
elif not self._todo.get(test.procid):
del self._last_idx[test.procid]
del self._todo[test.procid]
self._send_result(test, None)
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