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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_TASK_SEQUENCE_MANAGER_TEST_SEQUENCE_MANAGER_FOR_TEST_H_
#define BASE_TASK_SEQUENCE_MANAGER_TEST_SEQUENCE_MANAGER_FOR_TEST_H_
#include <memory>
#include "base/task/sequence_manager/sequence_manager.h"
#include "base/task/sequence_manager/sequence_manager_impl.h"
#include "base/task/single_thread_task_runner.h"
#include "base/time/tick_clock.h"
namespace base {
namespace sequence_manager {
class SequenceManagerForTest : public internal::SequenceManagerImpl {
public:
~SequenceManagerForTest() override = default;
// Creates SequenceManagerForTest using ThreadControllerImpl constructed with
// the given arguments. ThreadControllerImpl is slightly overridden to skip
// nesting observers registration if message loop is absent.
static std::unique_ptr<SequenceManagerForTest> Create(
SequenceManagerImpl* funneled_sequence_manager,
scoped_refptr<SingleThreadTaskRunner> task_runner,
const TickClock* clock,
// Since most test calls are in Blink, randomised sampling is enabled
// by default in the test SequenceManager, as opposed to production code.
SequenceManager::Settings settings = SequenceManager::Settings::Builder()
.SetShouldSampleCPUTime(true)
.Build());
// Creates SequenceManagerForTest using the provided ThreadController.
static std::unique_ptr<SequenceManagerForTest> Create(
std::unique_ptr<internal::ThreadController> thread_controller,
SequenceManager::Settings settings = SequenceManager::Settings::Builder()
.SetShouldSampleCPUTime(true)
.Build());
static std::unique_ptr<SequenceManagerForTest> CreateOnCurrentThread(
SequenceManager::Settings);
size_t ActiveQueuesCount() const;
bool HasImmediateWork() const;
size_t PendingTasksCount() const;
size_t QueuesToDeleteCount() const;
size_t QueuesToShutdownCount();
using internal::SequenceManagerImpl::
CreateThreadControllerImplForCurrentThread;
using internal::SequenceManagerImpl::GetNextSequenceNumber;
using internal::SequenceManagerImpl::MoveReadyDelayedTasksToWorkQueues;
using internal::SequenceManagerImpl::ReloadEmptyWorkQueues;
private:
explicit SequenceManagerForTest(
std::unique_ptr<internal::ThreadController> thread_controller,
SequenceManager::Settings settings);
};
} // namespace sequence_manager
} // namespace base
#endif // BASE_TASK_SEQUENCE_MANAGER_TEST_SEQUENCE_MANAGER_FOR_TEST_H_
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