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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "base/test/scoped_task_scheduler.h" |
| 6 |
| 7 #include <vector> |
| 8 |
| 9 #include "base/bind.h" |
| 10 #include "base/task_scheduler/scheduler_worker_pool_params.h" |
| 11 #include "base/task_scheduler/task_scheduler.h" |
| 12 #include "base/threading/platform_thread.h" |
| 13 #include "base/time/time.h" |
| 14 |
| 15 namespace base { |
| 16 namespace test { |
| 17 |
| 18 namespace { |
| 19 |
| 20 size_t GetWorkerPoolIndexForTraits(const TaskTraits&) { |
| 21 // All TaskTraits are mapped to the single worker pool. |
| 22 return 0; |
| 23 } |
| 24 |
| 25 } // namespace |
| 26 |
| 27 ScopedTaskScheduler::ScopedTaskScheduler() { |
| 28 DCHECK(!TaskScheduler::GetInstance()); |
| 29 |
| 30 // Create a TaskScheduler with a single thread to make tests deterministic. |
| 31 std::vector<SchedulerWorkerPoolParams> worker_pool_params_vector; |
| 32 worker_pool_params_vector.emplace_back( |
| 33 "Test", ThreadPriority::NORMAL, |
| 34 SchedulerWorkerPoolParams::IORestriction::ALLOWED, 1, TimeDelta::Max()); |
| 35 TaskScheduler::CreateAndSetDefaultTaskScheduler( |
| 36 worker_pool_params_vector, Bind(&GetWorkerPoolIndexForTraits)); |
| 37 task_scheduler_ = TaskScheduler::GetInstance(); |
| 38 } |
| 39 |
| 40 ScopedTaskScheduler::~ScopedTaskScheduler() { |
| 41 DCHECK_EQ(task_scheduler_, TaskScheduler::GetInstance()); |
| 42 TaskScheduler::GetInstance()->Shutdown(); |
| 43 TaskScheduler::GetInstance()->JoinForTesting(); |
| 44 TaskScheduler::SetInstance(nullptr); |
| 45 } |
| 46 |
| 47 } // namespace test |
| 48 } // namespace base |
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