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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.
// This file contains the Windows-specific exporting to ETW.
#ifndef BASE_TRACE_EVENT_ETW_INTERCEPTOR_WIN_H_
#define BASE_TRACE_EVENT_ETW_INTERCEPTOR_WIN_H_
#include <stdint.h>
#include "base/base_export.h"
#include "base/trace_event/trace_logging_minimal_win.h"
#include "third_party/perfetto/include/perfetto/tracing/interceptor.h"
#include "third_party/perfetto/include/perfetto/tracing/track_event_state_tracker.h"
#include "third_party/perfetto/protos/perfetto/config/track_event/track_event_config.gen.h" // nogncheck
namespace base::trace_event {
// Receives perfetto tracing packets and emits ETW events through TlmProvider.
class BASE_EXPORT ETWInterceptor
: public perfetto::Interceptor<ETWInterceptor> {
public:
static void OnTracePacket(InterceptorContext context);
explicit ETWInterceptor(TlmProvider* provider);
~ETWInterceptor() override;
static void Register(TlmProvider* provider);
void OnSetup(const SetupArgs&) override;
void OnStart(const StartArgs&) override;
void OnStop(const StopArgs&) override;
struct ThreadLocalState : public InterceptorBase::ThreadLocalState {
explicit ThreadLocalState(ThreadLocalStateArgs&);
~ThreadLocalState() override;
// We only support a single trace writer sequence per thread, so the
// sequence state is stored in TLS.
perfetto::TrackEventStateTracker::SequenceState sequence_state;
};
private:
class Delegate;
perfetto::TrackEventStateTracker::SessionState session_state_;
raw_ptr<TlmProvider> provider_;
};
BASE_EXPORT perfetto::protos::gen::TrackEventConfig
ETWKeywordToTrackEventConfig(uint64_t keyword);
} // namespace base::trace_event
#endif // BASE_TRACE_EVENT_ETW_INTERCEPTOR_WIN_H_
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