chromium/third_party/perfetto/include/perfetto/tracing/internal/tracing_muxer.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_INTERNAL_TRACING_MUXER_H_
#define INCLUDE_PERFETTO_TRACING_INTERNAL_TRACING_MUXER_H_

#include <atomic>
#include <memory>

#include "perfetto/base/export.h"
#include "perfetto/tracing/core/forward_decls.h"
#include "perfetto/tracing/interceptor.h"
#include "perfetto/tracing/internal/basic_types.h"
#include "perfetto/tracing/internal/tracing_tls.h"
#include "perfetto/tracing/platform.h"
namespace perfetto {

class DataSourceBase;
class TraceWriterBase;
struct TracingInitArgs;
class TracingSession;

namespace internal {

struct DataSourceParams { … };

struct DataSourceStaticState;

// This class acts as a bridge between the public API methods and the
// TracingBackend(s). It exposes a simplified view of the world to the API
// methods, so that they don't have to care about the multiplicity of backends.
// It handles all the bookkeeping to map data source instances and trace writers
// to the various backends.
// See tracing_muxer_impl.h for the full picture. This class contains only the
// fewer fields and methods that need to be exposed to public/ headers. Fields
// and methods that are required to implement them should go into
// src/tracing/internal/tracing_muxer_impl.h instead: that one can pull in
// perfetto headers outside of public, this one cannot.
class PERFETTO_EXPORT_COMPONENT TracingMuxer { … };

}  // namespace internal
}  // namespace perfetto

#endif  // INCLUDE_PERFETTO_TRACING_INTERNAL_TRACING_MUXER_H_