mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-11-24 14:26:09 +03:00
133 lines
4.8 KiB
C++
133 lines
4.8 KiB
C++
// Copyright 2016 The Chromium Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
#ifndef BASE_TASK_SCHEDULER_TASK_SCHEDULER_IMPL_H_
|
|
#define BASE_TASK_SCHEDULER_TASK_SCHEDULER_IMPL_H_
|
|
|
|
#include <memory>
|
|
#include <vector>
|
|
|
|
#include "base/base_export.h"
|
|
#include "base/callback.h"
|
|
#include "base/logging.h"
|
|
#include "base/macros.h"
|
|
#include "base/memory/ptr_util.h"
|
|
#include "base/memory/ref_counted.h"
|
|
#include "base/strings/string_piece.h"
|
|
#include "base/synchronization/atomic_flag.h"
|
|
#include "base/task_scheduler/delayed_task_manager.h"
|
|
#include "base/task_scheduler/scheduler_single_thread_task_runner_manager.h"
|
|
#include "base/task_scheduler/scheduler_worker_pool_impl.h"
|
|
#include "base/task_scheduler/single_thread_task_runner_thread_mode.h"
|
|
#include "base/task_scheduler/task_scheduler.h"
|
|
#include "base/task_scheduler/task_tracker.h"
|
|
#include "base/task_scheduler/task_traits.h"
|
|
#include "build/build_config.h"
|
|
|
|
#if defined(OS_POSIX) && !defined(OS_NACL_SFI)
|
|
#include "base/task_scheduler/task_tracker_posix.h"
|
|
#endif
|
|
|
|
#if defined(OS_WIN)
|
|
#include "base/win/com_init_check_hook.h"
|
|
#endif
|
|
|
|
namespace base {
|
|
|
|
class HistogramBase;
|
|
class Thread;
|
|
|
|
namespace internal {
|
|
|
|
// Default TaskScheduler implementation. This class is thread-safe.
|
|
class BASE_EXPORT TaskSchedulerImpl : public TaskScheduler {
|
|
public:
|
|
using TaskTrackerImpl =
|
|
#if defined(OS_POSIX) && !defined(OS_NACL_SFI)
|
|
TaskTrackerPosix;
|
|
#else
|
|
TaskTracker;
|
|
#endif
|
|
|
|
// Creates a TaskSchedulerImpl with a production TaskTracker.
|
|
//|histogram_label| is used to label histograms, it must not be empty.
|
|
explicit TaskSchedulerImpl(StringPiece histogram_label);
|
|
|
|
// For testing only. Creates a TaskSchedulerImpl with a custom TaskTracker.
|
|
TaskSchedulerImpl(StringPiece histogram_label,
|
|
std::unique_ptr<TaskTrackerImpl> task_tracker);
|
|
|
|
~TaskSchedulerImpl() override;
|
|
|
|
// TaskScheduler:
|
|
void Start(const TaskScheduler::InitParams& init_params,
|
|
SchedulerWorkerObserver* scheduler_worker_observer) override;
|
|
void PostDelayedTaskWithTraits(const Location& from_here,
|
|
const TaskTraits& traits,
|
|
OnceClosure task,
|
|
TimeDelta delay) override;
|
|
scoped_refptr<TaskRunner> CreateTaskRunnerWithTraits(
|
|
const TaskTraits& traits) override;
|
|
scoped_refptr<SequencedTaskRunner> CreateSequencedTaskRunnerWithTraits(
|
|
const TaskTraits& traits) override;
|
|
scoped_refptr<SingleThreadTaskRunner> CreateSingleThreadTaskRunnerWithTraits(
|
|
const TaskTraits& traits,
|
|
SingleThreadTaskRunnerThreadMode thread_mode) override;
|
|
#if defined(OS_WIN)
|
|
scoped_refptr<SingleThreadTaskRunner> CreateCOMSTATaskRunnerWithTraits(
|
|
const TaskTraits& traits,
|
|
SingleThreadTaskRunnerThreadMode thread_mode) override;
|
|
#endif // defined(OS_WIN)
|
|
std::vector<const HistogramBase*> GetHistograms() const override;
|
|
int GetMaxConcurrentNonBlockedTasksWithTraitsDeprecated(
|
|
const TaskTraits& traits) const override;
|
|
void Shutdown() override;
|
|
void FlushForTesting() override;
|
|
void FlushAsyncForTesting(OnceClosure flush_callback) override;
|
|
void JoinForTesting() override;
|
|
|
|
private:
|
|
// Returns the worker pool that runs Tasks with |traits|.
|
|
SchedulerWorkerPoolImpl* GetWorkerPoolForTraits(
|
|
const TaskTraits& traits) const;
|
|
|
|
// Returns |traits|, with priority set to TaskPriority::USER_BLOCKING if
|
|
// |all_tasks_user_blocking_| is set.
|
|
TaskTraits SetUserBlockingPriorityIfNeeded(const TaskTraits& traits) const;
|
|
|
|
const std::unique_ptr<TaskTrackerImpl> task_tracker_;
|
|
std::unique_ptr<Thread> service_thread_;
|
|
DelayedTaskManager delayed_task_manager_;
|
|
SchedulerSingleThreadTaskRunnerManager single_thread_task_runner_manager_;
|
|
|
|
// Indicates that all tasks are handled as if they had been posted with
|
|
// TaskPriority::USER_BLOCKING. Since this is set in Start(), it doesn't apply
|
|
// to tasks posted before Start() or to tasks posted to TaskRunners created
|
|
// before Start().
|
|
//
|
|
// TODO(fdoray): Remove after experiment. https://crbug.com/757022
|
|
AtomicFlag all_tasks_user_blocking_;
|
|
|
|
// There are 4 SchedulerWorkerPoolImpl in this array to match the 4
|
|
// SchedulerWorkerPoolParams in TaskScheduler::InitParams.
|
|
std::unique_ptr<SchedulerWorkerPoolImpl> worker_pools_[4];
|
|
|
|
#if DCHECK_IS_ON()
|
|
// Set once JoinForTesting() has returned.
|
|
AtomicFlag join_for_testing_returned_;
|
|
#endif
|
|
|
|
#if defined(OS_WIN) && defined(COM_INIT_CHECK_HOOK_ENABLED)
|
|
// Provides COM initialization verification for supported builds.
|
|
base::win::ComInitCheckHook com_init_check_hook_;
|
|
#endif
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(TaskSchedulerImpl);
|
|
};
|
|
|
|
} // namespace internal
|
|
} // namespace base
|
|
|
|
#endif // BASE_TASK_SCHEDULER_TASK_SCHEDULER_IMPL_H_
|