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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/scheduler/browser_task_priority.h"
#include "base/notreached.h"
#include "base/task/sequence_manager/sequence_manager.h"
#include "base/tracing/protos/chrome_track_event.pbzero.h"
#include "components/performance_manager/scenario_api/performance_scenarios.h"
#include "content/public/common/content_features.h"
namespace content::internal {
namespace {
using ProtoPriority = perfetto::protos::pbzero::SequenceManagerTask::Priority;
ProtoPriority ToProtoPriority(BrowserTaskPriority priority) {
switch (priority) {
case BrowserTaskPriority::kControlPriority:
return ProtoPriority::CONTROL_PRIORITY;
case BrowserTaskPriority::kHighestPriority:
return ProtoPriority::HIGHEST_PRIORITY;
case BrowserTaskPriority::kHighPriority:
return ProtoPriority::HIGH_PRIORITY;
case BrowserTaskPriority::kNormalPriority:
return ProtoPriority::NORMAL_PRIORITY;
case BrowserTaskPriority::kLowPriority:
return ProtoPriority::LOW_PRIORITY;
case BrowserTaskPriority::kBestEffortPriority:
return ProtoPriority::BEST_EFFORT_PRIORITY;
case BrowserTaskPriority::kPriorityCount:
NOTREACHED();
}
}
ProtoPriority TaskPriorityToProto(
base::sequence_manager::TaskQueue::QueuePriority priority) {
DCHECK_LT(static_cast<size_t>(priority),
static_cast<size_t>(BrowserTaskPriority::kPriorityCount));
return ToProtoPriority(static_cast<BrowserTaskPriority>(priority));
}
} // namespace
base::sequence_manager::SequenceManager::PrioritySettings
CreateBrowserTaskPrioritySettings() {
using base::sequence_manager::TaskQueue;
base::sequence_manager::SequenceManager::PrioritySettings settings(
BrowserTaskPriority::kPriorityCount,
BrowserTaskPriority::kDefaultPriority);
settings.SetProtoPriorityConverter(&TaskPriorityToProto);
return settings;
}
bool ShouldBoostThreadsPriority() {
DCHECK(base::FeatureList::IsEnabled(
features::kBoostThreadsPriorityDuringInputScenario));
performance_scenarios::ScenarioPattern no_input{
.input = {performance_scenarios::InputScenario::kNoInput},
};
return !performance_scenarios::CurrentScenariosMatch(
performance_scenarios::ScenarioScope::kGlobal, no_input);
}
} // namespace content::internal
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