view src/share/vm/runtime/stackValueCollection.hpp @ 615:c6c601a0f2d6

6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC Summary: Call newly created CollectedHeap::dump_{pre,post}_full_gc before and after every stop-world full collection cycle on GenCollectedHeap and ParallelScavengeHeap. (Support for G1CollectedHeap forthcoming under CR 6810861.) Small modifications to existing heap dumping and class histogram implementation, especially to allow multiple on-the-fly histos/dumps by the VM thread during a single safepoint. Reviewed-by: jmasa, alanb, mchung
author ysr
date Mon, 02 Mar 2009 16:37:04 -0800
parents a61af66fc99e
children c18cbe5936b8
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/*
 * Copyright 2001-2002 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 */

class StackValueCollection : public ResourceObj {
 private:
  GrowableArray<StackValue*>* _values;

 public:
  StackValueCollection()            { _values = new GrowableArray<StackValue*>(); }
  StackValueCollection(int length)  { _values = new GrowableArray<StackValue*>(length); }

  void add(StackValue *val) const   { _values->push(val); }
  int  size() const                 { return _values->length(); }
  bool is_empty() const             { return (size() == 0); }
  StackValue* at(int i) const       { return _values->at(i); }

  // Get typed locals/expressions
  jint  int_at(int slot) const;
  jlong long_at(int slot) const;
  Handle obj_at(int slot) const;
  jfloat  float_at(int slot) const;
  jdouble double_at(int slot) const;

  // Set typed locals/expressions
  void set_int_at(int slot, jint value);
  void set_long_at(int slot, jlong value);
  void set_obj_at(int slot, Handle value);
  void set_float_at(int slot, jfloat value);
  void set_double_at(int slot, jdouble value);

  void print();
};