chromium/base/task/task_features.cc

// 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.

#include "base/task/task_features.h"

#include <atomic>

#include "base/base_export.h"
#include "base/feature_list.h"
#include "build/build_config.h"

namespace base {

// Note to implementers: thread pool code using task features must absolutely
// not invoke FeatureList::IsEnabled outside of the main thread. Doing so
// causes data races between worker threads and ~FeatureList when tests end
// (crbug.com/1344573). A reliable moment to query and cache the feature state
// is on ThreadPoolImpl::Start (and thus also on the first WorkerThread::Start,
// not the later ones) as this is invoked from the main thread after
// initializing the FeatureList. If caching the feature state in a static, you
// must be aware that all tests sharing a process will have the same state,
// regardless of future ScopedFeatureList instances.

BASE_FEATURE();

BASE_FEATURE();

BASE_FEATURE();

BASE_FEATURE();

const base::FeatureParam<TimeDelta> kTaskLeewayParam{};
const base::FeatureParam<TimeDelta> kMaxPreciseDelay{};

BASE_FEATURE();

BASE_FEATURE();

BASE_FEATURE();

BASE_FEATURE();

BASE_FEATURE();

BASE_FEATURE();
#endif

BASE_FEATURE();

const base::FeatureParam<int> kThreadPoolCapRestrictedCount{};

BASE_FEATURE();

const base::FeatureParam<int> kMaxDelayedStarvationTasksParam{};

BASE_FEATURE();
const base::FeatureParam<int> kMaxNumWorkersCreated{};

}  // namespace base