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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 "third_party/blink/renderer/platform/scheduler/common/task_priority.h"
#include "base/task/sequence_manager/sequence_manager.h"
#include "base/task/sequence_manager/task_queue.h"
#include "base/tracing/protos/chrome_track_event.pbzero.h"
namespace blink::scheduler {
namespace {
using ProtoPriority = perfetto::protos::pbzero::SequenceManagerTask::Priority;
ProtoPriority ToProtoPriority(TaskPriority priority) {
switch (priority) {
case TaskPriority::kControlPriority:
return ProtoPriority::CONTROL_PRIORITY;
case TaskPriority::kHighestPriority:
return ProtoPriority::HIGHEST_PRIORITY;
case TaskPriority::kExtremelyHighPriority:
return ProtoPriority::EXTREMELY_HIGH_PRIORITY;
case TaskPriority::kVeryHighPriority:
return ProtoPriority::VERY_HIGH_PRIORITY;
case TaskPriority::kHighPriorityContinuation:
return ProtoPriority::HIGH_PRIORITY_CONTINUATION;
case TaskPriority::kHighPriority:
return ProtoPriority::HIGH_PRIORITY;
case TaskPriority::kNormalPriorityContinuation:
return ProtoPriority::NORMAL_PRIORITY_CONTINUATION;
case TaskPriority::kNormalPriority:
return ProtoPriority::NORMAL_PRIORITY;
case TaskPriority::kLowPriorityContinuation:
return ProtoPriority::LOW_PRIORITY_CONTINUATION;
case TaskPriority::kLowPriority:
return ProtoPriority::LOW_PRIORITY;
case TaskPriority::kBestEffortPriority:
return ProtoPriority::BEST_EFFORT_PRIORITY;
case TaskPriority::kPriorityCount:
return ProtoPriority::UNKNOWN;
}
}
ProtoPriority TaskPriorityToProto(
base::sequence_manager::TaskQueue::QueuePriority priority) {
DCHECK_LT(static_cast<size_t>(priority),
static_cast<size_t>(TaskPriority::kPriorityCount));
return ToProtoPriority(static_cast<TaskPriority>(priority));
}
} // namespace
base::sequence_manager::SequenceManager::PrioritySettings
CreatePrioritySettings() {
using base::sequence_manager::TaskQueue;
base::sequence_manager::SequenceManager::PrioritySettings settings(
TaskPriority::kPriorityCount, TaskPriority::kDefaultPriority);
#if BUILDFLAG(ENABLE_BASE_TRACING)
settings.SetProtoPriorityConverter(&TaskPriorityToProto);
#endif
return settings;
}
const char* TaskPriorityToString(TaskPriority priority) {
switch (priority) {
case TaskPriority::kControlPriority:
return "control";
case TaskPriority::kHighestPriority:
return "highest";
case TaskPriority::kExtremelyHighPriority:
return "render_blocking";
case TaskPriority::kVeryHighPriority:
return "very_high";
case TaskPriority::kHighPriorityContinuation:
return "high_continuation";
case TaskPriority::kHighPriority:
return "high";
case TaskPriority::kNormalPriorityContinuation:
return "normal_continuation";
case TaskPriority::kNormalPriority:
return "normal";
case TaskPriority::kLowPriorityContinuation:
return "low_continuation";
case TaskPriority::kLowPriority:
return "low";
case TaskPriority::kBestEffortPriority:
return "best_effort";
case TaskPriority::kPriorityCount:
NOTREACHED();
}
}
} // namespace blink::scheduler
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