src/diagnostics/etw-jit-win.h

// Copyright 2010 the V8 project 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 V8_DIAGNOSTICS_ETW_JIT_WIN_H_
#define V8_DIAGNOSTICS_ETW_JIT_WIN_H_

#include <atomic>

#include "include/v8-callbacks.h"
#include "include/v8config.h"
#include "src/base/macros.h"

namespace v8 {

class Isolate;
struct JitCodeEvent;

namespace internal {
namespace ETWJITInterface {
extern V8_EXPORT_PRIVATE std::atomic<bool>
    has_active_etw_tracing_session_or_custom_filter;

// Indicates that the ETW events emission was triggered by a CaptureStateOnStop
// callback. We need this information in order to accordingly modify the event
// codes (SourceLoad -> SourceDCStart, MethodLoad -> MethodDCStart).
constexpr uint32_t kEtwRundown = 0xf0000000;
static_assert(kEtwRundown > JitCodeEventOptions::kLastJitCodeEventOption);

void Register();
void Unregister();
void AddIsolate(Isolate* isolate);
void RemoveIsolate(Isolate* isolate);
void EventHandler(const v8::JitCodeEvent* event);
void MaybeSetHandlerNow(Isolate* isolate);
}  // namespace ETWJITInterface
}  // namespace internal
}  // namespace v8

#endif  // V8_DIAGNOSTICS_ETW_JIT_WIN_H_