chromium/third_party/perfetto/include/perfetto/tracing/track_event_category_registry.h

/*
 * Copyright (C) 2019 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef INCLUDE_PERFETTO_TRACING_TRACK_EVENT_CATEGORY_REGISTRY_H_
#define INCLUDE_PERFETTO_TRACING_TRACK_EVENT_CATEGORY_REGISTRY_H_

#include "perfetto/tracing/data_source.h"

#include <stddef.h>

#include <atomic>
#include <utility>

namespace perfetto {
class DynamicCategory;

// A compile-time representation of a track event category. See
// PERFETTO_DEFINE_CATEGORIES for registering your own categories.
struct PERFETTO_EXPORT_COMPONENT Category { … };

// Dynamically constructed category names should marked as such through this
// container type to make it less likely for trace points to accidentally start
// using dynamic categories. Events with dynamic categories will always be
// slightly more expensive than regular events, so use them sparingly.
class PERFETTO_EXPORT_COMPONENT DynamicCategory final { … };

namespace internal {

constexpr const char* NullCategory(const char*) { … }

perfetto::DynamicCategory NullCategory(const perfetto::DynamicCategory&);

constexpr bool StringMatchesPrefix(const char* str, const char* prefix) { … }

constexpr bool IsStringInPrefixList(const char*) { … }

template <typename... Args>
constexpr bool IsStringInPrefixList(const char* str,
                                    const char* prefix,
                                    Args... args) { … }

// Holds all the registered categories for one category namespace. See
// PERFETTO_DEFINE_CATEGORIES for building the registry.
class PERFETTO_EXPORT_COMPONENT TrackEventCategoryRegistry { … };

}  // namespace internal
}  // namespace perfetto

#endif  // INCLUDE_PERFETTO_TRACING_TRACK_EVENT_CATEGORY_REGISTRY_H_