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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.
#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(kUseUtilityThreadGroup,
"UseUtilityThreadGroup",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE(kNoWorkerThreadReclaim,
"NoWorkerThreadReclaim",
base::FEATURE_ENABLED_BY_DEFAULT);
BASE_FEATURE(kDelayFirstWorkerWake,
"DelayFirstWorkerWake",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE(kAddTaskLeewayFeature,
"AddTaskLeeway",
base::FEATURE_ENABLED_BY_DEFAULT);
const base::FeatureParam<TimeDelta> kTaskLeewayParam{&kAddTaskLeewayFeature,
"leeway", kDefaultLeeway};
const base::FeatureParam<TimeDelta> kMaxPreciseDelay{
&kAddTaskLeewayFeature, "max_precise_delay", kDefaultMaxPreciseDelay};
BASE_FEATURE(kAlignWakeUps, "AlignWakeUps", base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE(kTimerSlackMac,
"TimerSlackMac",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE(kExplicitHighResolutionTimerWin,
"ExplicitHighResolutionTimerWin",
base::FEATURE_ENABLED_BY_DEFAULT);
#if BUILDFLAG(IS_MAC) || BUILDFLAG(IS_CHROMEOS)
BASE_FEATURE(kRunTasksByBatches,
"RunTasksByBatches",
base::FEATURE_ENABLED_BY_DEFAULT);
#else
BASE_FEATURE(kRunTasksByBatches,
"RunTasksByBatches",
base::FEATURE_DISABLED_BY_DEFAULT);
#endif
BASE_FEATURE(kThreadPoolCap2,
"ThreadPoolCap2",
base::FEATURE_DISABLED_BY_DEFAULT);
const base::FeatureParam<int> kThreadPoolCapRestrictedCount{
&kThreadPoolCap2, "restricted_count", 3};
BASE_FEATURE(kMaxDelayedStarvationTasks,
"MaxDelayedStarvationTasks",
base::FEATURE_ENABLED_BY_DEFAULT);
const base::FeatureParam<int> kMaxDelayedStarvationTasksParam{
&kMaxDelayedStarvationTasks, "count", 3};
BASE_FEATURE(kUseNewJobImplementation,
"UseNewJobImplementation",
base::FEATURE_DISABLED_BY_DEFAULT);
} // namespace base
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