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// Copyright 2017 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_ENVIRONMENT_CONFIG_H_
#define BASE_TASK_SCHEDULER_ENVIRONMENT_CONFIG_H_
#include <stddef.h>
#include "base/task_scheduler/task_traits.h"
#include "base/threading/thread.h"
namespace base {
namespace internal {
enum EnvironmentType {
BACKGROUND = 0,
BACKGROUND_BLOCKING,
FOREGROUND,
FOREGROUND_BLOCKING,
ENVIRONMENT_COUNT // Always last.
};
// Order must match the EnvironmentType enum.
constexpr struct {
// The threads and histograms of this environment will be labeled with
// the task scheduler name concatenated to this.
const char* name_suffix;
// Preferred priority for threads in this environment; the actual thread
// priority depends on shutdown state and platform capabilities.
ThreadPriority priority_hint;
} kEnvironmentParams[] = {
{"Background", base::ThreadPriority::BACKGROUND},
{"BackgroundBlocking", base::ThreadPriority::BACKGROUND},
{"Foreground", base::ThreadPriority::NORMAL},
{"ForegroundBlocking", base::ThreadPriority::NORMAL},
};
size_t BASE_EXPORT GetEnvironmentIndexForTraits(const TaskTraits& traits);
} // namespace internal
} // namespace base
#endif // BASE_TASK_SCHEDULER_ENVIRONMENT_CONFIG_H_
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