chromium/v8/src/logging/runtime-call-stats.h

// Copyright 2021 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_LOGGING_RUNTIME_CALL_STATS_H_
#define V8_LOGGING_RUNTIME_CALL_STATS_H_

#include <optional>

#include "src/base/macros.h"

#ifdef V8_RUNTIME_CALL_STATS

#include "src/base/atomic-utils.h"
#include "src/base/platform/platform.h"
#include "src/base/platform/time.h"
#include "src/builtins/builtins-definitions.h"
#include "src/execution/thread-id.h"
#include "src/init/heap-symbols.h"
#include "src/logging/tracing-flags.h"
#include "src/runtime/runtime.h"
#include "src/tracing/traced-value.h"
#include "src/tracing/tracing-category-observer.h"

#endif  // V8_RUNTIME_CALL_STATS

namespace v8 {
namespace internal {

#ifdef V8_RUNTIME_CALL_STATS

class RuntimeCallCounter final { … };

// RuntimeCallTimer is used to keep track of the stack of currently active
// timers used for properly measuring the own time of a RuntimeCallCounter.
class RuntimeCallTimer final { … };

#define FOR_EACH_GC_COUNTER(V) …

#define FOR_EACH_API_COUNTER(V) …

#define ADD_THREAD_SPECIFIC_COUNTER(V, Prefix, Suffix) …

#define FOR_EACH_THREAD_SPECIFIC_COUNTER(V) …

#define FOR_EACH_MANUAL_COUNTER(V) …

#define FOR_EACH_HANDLER_COUNTER(V) …

enum RuntimeCallCounterId { … };

class RuntimeCallStats final { … };

class WorkerThreadRuntimeCallStats final { … };

// Creating a WorkerThreadRuntimeCallStatsScope will provide a thread-local
// runtime call stats table, and will dump the table to an immediate trace event
// when it is destroyed.
class V8_EXPORT_PRIVATE V8_NODISCARD WorkerThreadRuntimeCallStatsScope final { … };

#define CHANGE_CURRENT_RUNTIME_COUNTER(runtime_call_stats, counter_id) …

#define TRACE_HANDLER_STATS(isolate, counter_name) …

// A RuntimeCallTimerScopes wraps around a RuntimeCallTimer to measure the
// the time of C++ scope.
class V8_NODISCARD RuntimeCallTimerScope { … };

#else  // RUNTIME_CALL_STATS

#define TRACE_HANDLER_STATS …
#define CHANGE_CURRENT_RUNTIME_COUNTER …

// Create dummy types to limit code changes
class WorkerThreadRuntimeCallStats {};

class RuntimeCallStats {
 public:
  enum ThreadType { kMainIsolateThread, kWorkerThread };
  explicit V8_EXPORT_PRIVATE RuntimeCallStats(ThreadType thread_type) {}
};

class WorkerThreadRuntimeCallStatsScope {
 public:
  explicit WorkerThreadRuntimeCallStatsScope(
      WorkerThreadRuntimeCallStats* off_thread_stats) {}
  RuntimeCallStats* Get() const { return nullptr; }
};

#endif  // RUNTIME_CALL_STATS

}  // namespace internal
}  // namespace v8

#endif  // V8_LOGGING_RUNTIME_CALL_STATS_H_