chromium/v8/src/logging/counters-scopes.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_COUNTERS_SCOPES_H_
#define V8_LOGGING_COUNTERS_SCOPES_H_

#include "src/execution/isolate.h"
#include "src/logging/counters.h"
#include "src/logging/log.h"

namespace v8 {
namespace internal {

class BaseTimedHistogramScope { … };

// Helper class for scoping a TimedHistogram.
class V8_NODISCARD TimedHistogramScope : public BaseTimedHistogramScope { … };

enum class OptionalTimedHistogramScopeMode { … };

// Helper class for scoping a TimedHistogram.
// It will not take time for mode = DONT_TAKE_TIME.
class V8_NODISCARD OptionalTimedHistogramScope
    : public BaseTimedHistogramScope { … };

// Helper class for scoping a TimedHistogram, where the histogram is selected at
// stop time rather than start time.
class V8_NODISCARD LazyTimedHistogramScope : public BaseTimedHistogramScope { … };

// Helper class for scoping a NestedHistogramTimer.
class V8_NODISCARD NestedTimedHistogramScope : public BaseTimedHistogramScope { … };

// Temporarily pause a NestedTimedHistogram when for instance leaving V8 for
// external callbacks.
class V8_NODISCARD PauseNestedTimedHistogramScope { … };

}  // namespace internal
}  // namespace v8

#endif  // V8_LOGGING_COUNTERS_SCOPES_H_