diff -r 05f89f00a864 -r ead53f6b615d src/share/vm/gc_implementation/shared/coTracker.cpp
--- a/src/share/vm/gc_implementation/shared/coTracker.cpp	Mon Aug 24 10:36:31 2009 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,189 +0,0 @@
-/*
- * Copyright 2001-2007 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.
- *
- */
-
-# include "incls/_precompiled.incl"
-# include "incls/_coTracker.cpp.incl"
-
-COTracker* COTracker::_head = NULL;
-double COTracker::_cpu_number = -1.0;
-
-void
-COTracker::resetPeriod(double now_sec, double vnow_sec) {
-  guarantee( _enabled, "invariant" );
-  _period_start_time_sec  = now_sec;
-  _period_start_vtime_sec = vnow_sec;
-}
-
-void
-COTracker::setConcOverhead(double time_stamp_sec,
-                           double conc_overhead) {
-  guarantee( _enabled, "invariant" );
-  _conc_overhead  = conc_overhead;
-  _time_stamp_sec = time_stamp_sec;
-  if (conc_overhead > 0.001)
-    _conc_overhead_seq.add(conc_overhead);
-}
-
-void
-COTracker::reset(double starting_conc_overhead) {
-  guarantee( _enabled, "invariant" );
-  double now_sec = os::elapsedTime();
-  setConcOverhead(now_sec, starting_conc_overhead);
-}
-
-void
-COTracker::start() {
-  guarantee( _enabled, "invariant" );
-  resetPeriod(os::elapsedTime(), os::elapsedVTime());
-}
-
-void
-COTracker::update(bool force_end) {
-  assert( _enabled, "invariant" );
-  double end_time_sec = os::elapsedTime();
-  double elapsed_time_sec = end_time_sec - _period_start_time_sec;
-  if (force_end || elapsed_time_sec > _update_period_sec) {
-    // reached the end of the period
-    double end_vtime_sec = os::elapsedVTime();
-    double elapsed_vtime_sec = end_vtime_sec - _period_start_vtime_sec;
-
-    double conc_overhead = elapsed_vtime_sec / elapsed_time_sec;
-
-    setConcOverhead(end_time_sec, conc_overhead);
-    resetPeriod(end_time_sec, end_vtime_sec);
-  }
-}
-
-void
-COTracker::updateForSTW(double start_sec, double end_sec) {
-  if (!_enabled)
-    return;
-
-  // During a STW pause, no concurrent GC thread has done any
-  // work. So, we can safely adjust the start of the current period by
-  // adding the duration of the STW pause to it, so that the STW pause
-  // doesn't affect the reading of the concurrent overhead (it's
-  // basically like excluding the time of the STW pause from the
-  // concurrent overhead calculation).
-
-  double stw_duration_sec = end_sec - start_sec;
-  guarantee( stw_duration_sec > 0.0, "invariant" );
-
-  if (outOfDate(start_sec))
-    _conc_overhead = 0.0;
-  else
-    _time_stamp_sec = end_sec;
-  _period_start_time_sec += stw_duration_sec;
-  _conc_overhead_seq = NumberSeq();
-
-  guarantee( os::elapsedTime() > _period_start_time_sec, "invariant" );
-}
-
-double
-COTracker::predConcOverhead() {
-  if (_enabled) {
-    // tty->print(" %1.2lf", _conc_overhead_seq.maximum());
-    return _conc_overhead_seq.maximum();
-  } else {
-    // tty->print(" DD");
-    return 0.0;
-  }
-}
-
-void
-COTracker::resetPred() {
-  _conc_overhead_seq = NumberSeq();
-}
-
-COTracker::COTracker(int group)
-    : _enabled(false),
-      _group(group),
-      _period_start_time_sec(-1.0),
-      _period_start_vtime_sec(-1.0),
-      _conc_overhead(-1.0),
-      _time_stamp_sec(-1.0),
-      _next(NULL) {
-  // GCOverheadReportingPeriodMS indicates how frequently the
-  // concurrent overhead will be recorded by the GC Overhead
-  // Reporter. We want to take readings less often than that. If we
-  // took readings more often than some of them might be lost.
-  _update_period_sec = ((double) GCOverheadReportingPeriodMS) / 1000.0 * 1.25;
-  _next = _head;
-  _head = this;
-
-  if (_cpu_number < 0.0)
-    _cpu_number = (double) os::processor_count();
-}
-
-// statics
-
-void
-COTracker::updateAllForSTW(double start_sec, double end_sec) {
-  for (COTracker* curr = _head; curr != NULL; curr = curr->_next) {
-    curr->updateForSTW(start_sec, end_sec);
-  }
-}
-
-double
-COTracker::totalConcOverhead(double now_sec) {
-  double total_conc_overhead = 0.0;
-
-  for (COTracker* curr = _head; curr != NULL; curr = curr->_next) {
-    double conc_overhead = curr->concOverhead(now_sec);
-    total_conc_overhead += conc_overhead;
-  }
-
-  return total_conc_overhead;
-}
-
-double
-COTracker::totalConcOverhead(double now_sec,
-                             size_t group_num,
-                             double* co_per_group) {
-  double total_conc_overhead = 0.0;
-
-  for (size_t i = 0; i < group_num; ++i)
-    co_per_group[i] = 0.0;
-
-  for (COTracker* curr = _head; curr != NULL; curr = curr->_next) {
-    size_t group = curr->_group;
-    assert( 0 <= group && group < group_num, "invariant" );
-    double conc_overhead = curr->concOverhead(now_sec);
-
-    co_per_group[group] += conc_overhead;
-    total_conc_overhead += conc_overhead;
-  }
-
-  return total_conc_overhead;
-}
-
-double
-COTracker::totalPredConcOverhead() {
-  double total_pred_conc_overhead = 0.0;
-  for (COTracker* curr = _head; curr != NULL; curr = curr->_next) {
-    total_pred_conc_overhead += curr->predConcOverhead();
-    curr->resetPred();
-  }
-  return total_pred_conc_overhead / _cpu_number;
-}