hotspot/src/share/vm/memory/specialized_oop_closures.cpp
author jmasa
Tue, 06 Jan 2009 07:05:05 -0800
changeset 1893 c82e388e17c5
parent 1 489c9b5090e2
child 5547 f4b087cbb361
permissions -rw-r--r--
6689653: JMapPerm fails with UseConcMarkSweepIncGC and compressed oops off Summary: Added safe_object_iterate() for use by JMapPerm. Reviewed-by: tonyp
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/*
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 * Copyright 2001-2003 Sun Microsystems, Inc.  All Rights Reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 *
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 */
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# include "incls/_precompiled.incl"
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# include "incls/_specialized_oop_closures.cpp.incl"
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// For keeping stats on effectiveness.
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#ifndef PRODUCT
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#if ENABLE_SPECIALIZATION_STATS
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int SpecializationStats::_numCallsAll;
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int SpecializationStats::_numCallsTotal[NUM_Kinds];
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int SpecializationStats::_numCalls_nv[NUM_Kinds];
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int SpecializationStats::_numDoOopCallsTotal[NUM_Kinds];
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int SpecializationStats::_numDoOopCalls_nv[NUM_Kinds];
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void SpecializationStats::clear() {
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  _numCallsAll = 0;
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  for (int k = ik; k < NUM_Kinds; k++) {
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    _numCallsTotal[k] = 0;
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    _numCalls_nv[k] = 0;
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    _numDoOopCallsTotal[k] = 0;
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    _numDoOopCalls_nv[k] = 0;
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  }
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}
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void SpecializationStats::print() {
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  const char* header_format = "    %20s %10s %11s %10s";
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  const char* line_format   = "    %20s %10d %11d %9.2f%%";
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  int all_numCallsTotal =
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    _numCallsTotal[ik] + _numCallsTotal[irk] + _numCallsTotal[oa];
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  int all_numCalls_nv =
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    _numCalls_nv[ik] + _numCalls_nv[irk] + _numCalls_nv[oa];
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  gclog_or_tty->print_cr("\nOf %d oop_oop_iterate calls %d (%6.3f%%) are in (ik, irk, oa).",
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                _numCallsAll, all_numCallsTotal,
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                100.0 * (float)all_numCallsTotal / (float)_numCallsAll);
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  // irk calls are double-counted.
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  int real_ik_numCallsTotal = _numCallsTotal[ik] - _numCallsTotal[irk];
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  int real_ik_numCalls_nv   = _numCalls_nv[ik]   - _numCalls_nv[irk];
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  gclog_or_tty->print_cr("");
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  gclog_or_tty->print_cr(header_format, "oop_oop_iterate:", "calls", "non-virtual", "pct");
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  gclog_or_tty->print_cr(header_format,
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                "----------",
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                "----------",
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                "-----------",
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                "----------");
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  gclog_or_tty->print_cr(line_format, "all",
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                all_numCallsTotal,
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                all_numCalls_nv,
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                100.0 * (float)all_numCalls_nv / (float)all_numCallsTotal);
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  gclog_or_tty->print_cr(line_format, "ik",
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                real_ik_numCallsTotal, real_ik_numCalls_nv,
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                100.0 * (float)real_ik_numCalls_nv /
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                (float)real_ik_numCallsTotal);
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  gclog_or_tty->print_cr(line_format, "irk",
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                _numCallsTotal[irk], _numCalls_nv[irk],
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                100.0 * (float)_numCalls_nv[irk] / (float)_numCallsTotal[irk]);
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  gclog_or_tty->print_cr(line_format, "oa",
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                _numCallsTotal[oa], _numCalls_nv[oa],
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                100.0 * (float)_numCalls_nv[oa] / (float)_numCallsTotal[oa]);
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  gclog_or_tty->print_cr("");
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  gclog_or_tty->print_cr(header_format, "do_oop:", "calls", "non-virtual", "pct");
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  gclog_or_tty->print_cr(header_format,
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                "----------",
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                "----------",
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                "-----------",
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                "----------");
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  int all_numDoOopCallsTotal =
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    _numDoOopCallsTotal[ik] + _numDoOopCallsTotal[irk] + _numDoOopCallsTotal[oa];
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  int all_numDoOopCalls_nv =
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    _numDoOopCalls_nv[ik] + _numDoOopCalls_nv[irk] + _numDoOopCalls_nv[oa];
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  gclog_or_tty->print_cr(line_format, "all",
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                all_numDoOopCallsTotal, all_numDoOopCalls_nv,
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                100.0 * (float)all_numDoOopCalls_nv /
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                (float)all_numDoOopCallsTotal);
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  const char* kind_names[] = { "ik", "irk", "oa" };
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  for (int k = ik; k < NUM_Kinds; k++) {
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    gclog_or_tty->print_cr(line_format, kind_names[k],
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                  _numDoOopCallsTotal[k], _numDoOopCalls_nv[k],
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                  (_numDoOopCallsTotal[k] > 0 ?
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                   100.0 * (float)_numDoOopCalls_nv[k] /
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                   (float)_numDoOopCallsTotal[k]
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                   : 0.0));
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  }
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}
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#endif  // ENABLE_SPECIALIZATION_STATS
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#endif  // !PRODUCT