chromium/src/third_party/blink/renderer/core/css/resolver/style_resolver_stats.h

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 * this software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_CSS_RESOLVER_STYLE_RESOLVER_STATS_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_RESOLVER_STYLE_RESOLVER_STATS_H_

#include <memory>

#include "base/memory/ptr_util.h"
#include "third_party/blink/renderer/platform/instrumentation/tracing/trace_event.h"
#include "third_party/blink/renderer/platform/instrumentation/tracing/traced_value.h"

namespace blink {

class StyleResolverStats {
  USING_FAST_MALLOC(StyleResolverStats);

 public:
  StyleResolverStats() { Reset(); }

  void Reset();
  std::unique_ptr<TracedValue> ToTracedValue() const;

  unsigned matched_property_apply;
  unsigned matched_property_cache_hit;
  unsigned matched_property_cache_inherited_hit;
  unsigned matched_property_cache_added;
  unsigned rules_fast_rejected;
  unsigned rules_rejected;
  unsigned rules_matched;
  unsigned styles_changed;
  unsigned styles_unchanged;
  unsigned styles_animated;
  unsigned elements_styled;
  unsigned pseudo_elements_styled;
  unsigned base_styles_used;
  unsigned independent_inherited_styles_propagated;
  unsigned custom_properties_applied;
};

#define INCREMENT_STYLE_STATS_COUNTER(styleEngine, counter, n) \
  ((styleEngine).Stats() && ((styleEngine).Stats()->counter += n));

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_CSS_RESOLVER_STYLE_RESOLVER_STATS_H_