view src/share/vm/opto/idealGraphPrinter.hpp @ 9126:bc26f978b0ce

HotSpotResolvedObjectType: implement hasFinalizeSubclass() correctly don't use the (wrong) cached value, but ask the runtime on each request. Fixes regression on xml.* benchmarks @ specjvm2008. The problem was: After the constructor of Object was deoptimized due to an assumption violation, it was recompiled again after some time. However, on recompilation, the value of hasFinalizeSubclass for the class was not updated and it was compiled again with a, now wrong, assumption, which then triggers deoptimization again. This was repeated until it hit the recompilation limit (defined by PerMethodRecompilationCutoff), and therefore only executed by the interpreter from now on, causing the performance regression.
author Bernhard Urban <bernhard.urban@jku.at>
date Mon, 15 Apr 2013 19:54:58 +0200
parents c26de9aef2ed
children 6f817ce50129
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/*
 * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */

#ifndef SHARE_VM_OPTO_IDEALGRAPHPRINTER_HPP
#define SHARE_VM_OPTO_IDEALGRAPHPRINTER_HPP

#include "libadt/dict.hpp"
#include "libadt/vectset.hpp"
#include "utilities/growableArray.hpp"
#include "utilities/ostream.hpp"
#include "utilities/xmlstream.hpp"

#ifndef PRODUCT

class Compile;
class PhaseIFG;
class PhaseChaitin;
class Matcher;
class Node;
class InlineTree;
class ciMethod;

class IdealGraphPrinter
{
private:

  static const char *INDENT;
  static const char *TOP_ELEMENT;
  static const char *GROUP_ELEMENT;
  static const char *GRAPH_ELEMENT;
  static const char *PROPERTIES_ELEMENT;
  static const char *EDGES_ELEMENT;
  static const char *PROPERTY_ELEMENT;
  static const char *EDGE_ELEMENT;
  static const char *NODE_ELEMENT;
  static const char *NODES_ELEMENT;
  static const char *CONTROL_FLOW_ELEMENT;
  static const char *REMOVE_EDGE_ELEMENT;
  static const char *REMOVE_NODE_ELEMENT;
  static const char *METHOD_NAME_PROPERTY;
  static const char *BLOCK_NAME_PROPERTY;
  static const char *BLOCK_DOMINATOR_PROPERTY;
  static const char *BLOCK_ELEMENT;
  static const char *SUCCESSORS_ELEMENT;
  static const char *SUCCESSOR_ELEMENT;
  static const char *METHOD_IS_PUBLIC_PROPERTY;
  static const char *METHOD_IS_STATIC_PROPERTY;
  static const char *TRUE_VALUE;
  static const char *NODE_NAME_PROPERTY;
  static const char *EDGE_NAME_PROPERTY;
  static const char *NODE_ID_PROPERTY;
  static const char *FROM_PROPERTY;
  static const char *TO_PROPERTY;
  static const char *PROPERTY_NAME_PROPERTY;
  static const char *GRAPH_NAME_PROPERTY;
  static const char *INDEX_PROPERTY;
  static const char *METHOD_ELEMENT;
  static const char *INLINE_ELEMENT;
  static const char *BYTECODES_ELEMENT;
  static const char *METHOD_BCI_PROPERTY;
  static const char *METHOD_SHORT_NAME_PROPERTY;
  static const char *ASSEMBLY_ELEMENT;

  elapsedTimer _walk_time;
  elapsedTimer _output_time;
  elapsedTimer _build_blocks_time;

  static int _file_count;
  networkStream *_stream;
  xmlStream *_xml;
  outputStream *_output;
  ciMethod *_current_method;
  int _depth;
  char buffer[128];
  bool _should_send_method;
  PhaseChaitin* _chaitin;
  bool _traverse_outs;
  Compile *C;

  static void pre_node(Node* node, void *env);
  static void post_node(Node* node, void *env);

  void print_indent();
  void print_method(ciMethod *method, int bci, InlineTree *tree);
  void print_inline_tree(InlineTree *tree);
  void visit_node(Node *n, bool edges, VectorSet* temp_set);
  void walk_nodes(Node *start, bool edges, VectorSet* temp_set);
  void begin_elem(const char *s);
  void end_elem();
  void begin_head(const char *s);
  void end_head();
  void print_attr(const char *name, const char *val);
  void print_attr(const char *name, intptr_t val);
  void print_prop(const char *name, const char *val);
  void print_prop(const char *name, int val);
  void tail(const char *name);
  void head(const char *name);
  void text(const char *s);
  intptr_t get_node_id(Node *n);
  IdealGraphPrinter();
  ~IdealGraphPrinter();

public:

  static void clean_up();
  static IdealGraphPrinter *printer();

  bool traverse_outs();
  void set_traverse_outs(bool b);
  outputStream *output();
  void print_inlining(Compile* compile);
  void begin_method(Compile* compile);
  void end_method();
  void print_method(Compile* compile, const char *name, int level=1, bool clear_nodes = false);
  void print(Compile* compile, const char *name, Node *root, int level=1, bool clear_nodes = false);
  void print_xml(const char *name);


};

#endif

#endif // SHARE_VM_OPTO_IDEALGRAPHPRINTER_HPP