src/hotspot/share/jfr/leakprofiler/chains/edgeUtils.hpp
author mgronlun
Wed, 03 Jul 2019 11:34:46 +0200
changeset 55571 49102ba8cf14
parent 53244 9807daeb47c4
permissions -rw-r--r--
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds Reviewed-by: egahlin, rwestberg

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * accompanied this code).
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#ifndef SHARE_JFR_LEAKPROFILER_CHAINS_EDGEUTILS_HPP
#define SHARE_JFR_LEAKPROFILER_CHAINS_EDGEUTILS_HPP

#include "memory/allocation.hpp"

class Edge;
class Symbol;

class EdgeUtils : public AllStatic {
 public:
  static const size_t leak_context = 100;
  static const size_t root_context = 100;
  static const size_t max_ref_chain_depth = leak_context + root_context;

  static bool is_leak_edge(const Edge& edge);
  static const Edge* root(const Edge& edge);
  static const Edge* ancestor(const Edge& edge, size_t distance);

  static bool is_array_element(const Edge& edge);
  static int array_index(const Edge& edge);
  static int array_size(const Edge& edge);

  static const Symbol* field_name_symbol(const Edge& edge);
  static jshort field_modifiers(const Edge& edge);
};

#endif // SHARE_JFR_LEAKPROFILER_CHAINS_EDGEUTILS_HPP