--- a/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/binaryTreeDictionary.cpp	Tue Feb 26 15:57:49 2008 -0800
+++ b/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/binaryTreeDictionary.cpp	Fri Feb 29 14:42:56 2008 -0800
@@ -1071,85 +1071,56 @@
 // for each list in the tree.  Also print some summary
 // information.
 class printTreeCensusClosure : public AscendTreeCensusClosure {
+  int _print_line;
   size_t _totalFree;
-  AllocationStats _totals;
-  size_t _count;
+  FreeList _total;
 
  public:
   printTreeCensusClosure() {
+    _print_line = 0;
     _totalFree = 0;
-    _count = 0;
-    _totals.initialize();
   }
-  AllocationStats* totals() { return &_totals; }
-  size_t count() { return _count; }
-  void increment_count_by(size_t v) { _count += v; }
+  FreeList* total() { return &_total; }
   size_t totalFree() { return _totalFree; }
-  void increment_totalFree_by(size_t v) { _totalFree += v; }
   void do_list(FreeList* fl) {
-    bool nl = false; // "maybe this is not needed" isNearLargestChunk(fl->head());
-
-    gclog_or_tty->print("%c %4d\t\t" "%7d\t" "%7d\t"
-               "%7d\t"      "%7d\t" "%7d\t" "%7d\t"
-               "%7d\t"      "%7d\t" "%7d\t"
-               "%7d\t" "\n",
-               " n"[nl], fl->size(), fl->bfrSurp(), fl->surplus(),
-               fl->desired(), fl->prevSweep(), fl->beforeSweep(), fl->count(),
-               fl->coalBirths(), fl->coalDeaths(), fl->splitBirths(),
-               fl->splitDeaths());
-
-    increment_totalFree_by(fl->count() * fl->size());
-    increment_count_by(fl->count());
-    totals()->set_bfrSurp(totals()->bfrSurp() + fl->bfrSurp());
-    totals()->set_surplus(totals()->splitDeaths()     + fl->surplus());
-    totals()->set_prevSweep(totals()->prevSweep()   + fl->prevSweep());
-    totals()->set_beforeSweep(totals()->beforeSweep() + fl->beforeSweep());
-    totals()->set_coalBirths(totals()->coalBirths()  + fl->coalBirths());
-    totals()->set_coalDeaths(totals()->coalDeaths()  + fl->coalDeaths());
-    totals()->set_splitBirths(totals()->splitBirths() + fl->splitBirths());
-    totals()->set_splitDeaths(totals()->splitDeaths() + fl->splitDeaths());
+    if (++_print_line >= 40) {
+      FreeList::print_labels_on(gclog_or_tty, "size");
+      _print_line = 0;
+    }
+    fl->print_on(gclog_or_tty);
+    _totalFree +=            fl->count()            * fl->size()        ;
+    total()->set_count(      total()->count()       + fl->count()      );
+    total()->set_bfrSurp(    total()->bfrSurp()     + fl->bfrSurp()    );
+    total()->set_surplus(    total()->splitDeaths() + fl->surplus()    );
+    total()->set_desired(    total()->desired()     + fl->desired()    );
+    total()->set_prevSweep(  total()->prevSweep()   + fl->prevSweep()  );
+    total()->set_beforeSweep(total()->beforeSweep() + fl->beforeSweep());
+    total()->set_coalBirths( total()->coalBirths()  + fl->coalBirths() );
+    total()->set_coalDeaths( total()->coalDeaths()  + fl->coalDeaths() );
+    total()->set_splitBirths(total()->splitBirths() + fl->splitBirths());
+    total()->set_splitDeaths(total()->splitDeaths() + fl->splitDeaths());
   }
 };
 
 void BinaryTreeDictionary::printDictCensus(void) const {
 
   gclog_or_tty->print("\nBinaryTree\n");
-  gclog_or_tty->print(
-             "%4s\t\t" "%7s\t"   "%7s\t"    "%7s\t"    "%7s\t"    "%7s\t"
-             "%7s\t"   "%7s\t"   "%7s\t"    "%7s\t"    "%7s\t"     "\n",
-             "size",  "bfrsurp", "surplus", "desired", "prvSwep", "bfrSwep",
-             "count", "cBirths", "cDeaths", "sBirths", "sDeaths");
-
+  FreeList::print_labels_on(gclog_or_tty, "size");
   printTreeCensusClosure ptc;
   ptc.do_tree(root());
 
-  gclog_or_tty->print(
-             "\t\t"    "%7s\t"    "%7s\t"    "%7s\t"    "%7s\t"
-             "%7s\t"   "%7s\t"    "%7s\t"    "%7s\t"    "%7s\t"     "\n",
-                       "bfrsurp", "surplus", "prvSwep", "bfrSwep",
-             "count",  "cBirths", "cDeaths", "sBirths", "sDeaths");
+  FreeList* total = ptc.total();
+  FreeList::print_labels_on(gclog_or_tty, " ");
+  total->print_on(gclog_or_tty, "TOTAL\t");
   gclog_or_tty->print(
-             "%s\t\t"  "%7d\t"    "%7d\t"     "%7d\t"    "%7d\t"
-             "%7d\t"   "%7d\t"    "%7d\t"     "%7d\t"    "%7d\t"    "\n",
-             "totl",
-             ptc.totals()->bfrSurp(),
-             ptc.totals()->surplus(),
-             ptc.totals()->prevSweep(),
-             ptc.totals()->beforeSweep(),
-             ptc.count(),
-             ptc.totals()->coalBirths(),
-             ptc.totals()->coalDeaths(),
-             ptc.totals()->splitBirths(),
-             ptc.totals()->splitDeaths());
-  gclog_or_tty->print("totalFree(words): %7d growth: %8.5f  deficit: %8.5f\n",
+              "totalFree(words): " SIZE_FORMAT_W(16)
+              " growth: %8.5f  deficit: %8.5f\n",
               ptc.totalFree(),
-              (double)(ptc.totals()->splitBirths()+ptc.totals()->coalBirths()
-                       -ptc.totals()->splitDeaths()-ptc.totals()->coalDeaths())
-              /(ptc.totals()->prevSweep() != 0 ?
-                (double)ptc.totals()->prevSweep() : 1.0),
-             (double)(ptc.totals()->desired() - ptc.count())
-             /(ptc.totals()->desired() != 0 ?
-               (double)ptc.totals()->desired() : 1.0));
+              (double)(total->splitBirths() + total->coalBirths()
+                     - total->splitDeaths() - total->coalDeaths())
+              /(total->prevSweep() != 0 ? (double)total->prevSweep() : 1.0),
+             (double)(total->desired() - total->count())
+             /(total->desired() != 0 ? (double)total->desired() : 1.0));
 }
 
 // Verify the following tree invariants:

--- a/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.cpp	Tue Feb 26 15:57:49 2008 -0800
+++ b/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.cpp	Fri Feb 29 14:42:56 2008 -0800
@@ -1835,7 +1835,7 @@
   guarantee(false, "NYI");
 }
 
-bool CompactibleFreeListSpace::linearAllocationWouldFail() {
+bool CompactibleFreeListSpace::linearAllocationWouldFail() const {
   return _smallLinearAllocBlock._word_size == 0;
 }
 
@@ -1906,6 +1906,13 @@
   }
 }
 
+// Support for concurrent collection policy decisions.
+bool CompactibleFreeListSpace::should_concurrent_collect() const {
+  // In the future we might want to add in frgamentation stats --
+  // including erosion of the "mountain" into this decision as well.
+  return !adaptive_freelists() && linearAllocationWouldFail();
+}
+
 // Support for compaction
 
 void CompactibleFreeListSpace::prepare_for_compaction(CompactPoint* cp) {
@@ -2013,11 +2020,11 @@
   }
 }
 
-void CompactibleFreeListSpace::endSweepFLCensus(int sweepCt) {
+void CompactibleFreeListSpace::endSweepFLCensus(size_t sweep_count) {
   setFLSurplus();
   setFLHints();
   if (PrintGC && PrintFLSCensus > 0) {
-    printFLCensus(sweepCt);
+    printFLCensus(sweep_count);
   }
   clearFLCensus();
   assert_locked();
@@ -2293,59 +2300,37 @@
 }
 #endif
 
-void CompactibleFreeListSpace::printFLCensus(int sweepCt) const {
+void CompactibleFreeListSpace::printFLCensus(size_t sweep_count) const {
   assert_lock_strong(&_freelistLock);
-  ssize_t bfrSurp     = 0;
-  ssize_t surplus     = 0;
-  ssize_t desired     = 0;
-  ssize_t prevSweep   = 0;
-  ssize_t beforeSweep = 0;
-  ssize_t count       = 0;
-  ssize_t coalBirths  = 0;
-  ssize_t coalDeaths  = 0;
-  ssize_t splitBirths = 0;
-  ssize_t splitDeaths = 0;
-  gclog_or_tty->print("end sweep# %d\n", sweepCt);
-  gclog_or_tty->print("%4s\t"    "%7s\t"      "%7s\t"      "%7s\t"      "%7s\t"
-             "%7s\t"    "%7s\t"      "%7s\t"      "%7s\t"      "%7s\t"
-             "%7s\t"    "\n",
-             "size",    "bfrsurp",   "surplus",   "desired",   "prvSwep",
-             "bfrSwep", "count",     "cBirths",   "cDeaths",   "sBirths",
-             "sDeaths");
-
+  FreeList total;
+  gclog_or_tty->print("end sweep# " SIZE_FORMAT "\n", sweep_count);
+  FreeList::print_labels_on(gclog_or_tty, "size");
   size_t totalFree = 0;
   for (size_t i = IndexSetStart; i < IndexSetSize; i += IndexSetStride) {
     const FreeList *fl = &_indexedFreeList[i];
-        totalFree += fl->count() * fl->size();
-
-    gclog_or_tty->print("%4d\t"          "%7d\t"             "%7d\t"        "%7d\t"
-               "%7d\t"          "%7d\t"             "%7d\t"        "%7d\t"
-               "%7d\t"          "%7d\t"             "%7d\t"        "\n",
-               fl->size(),       fl->bfrSurp(),     fl->surplus(), fl->desired(),
-               fl->prevSweep(),  fl->beforeSweep(), fl->count(),   fl->coalBirths(),
-               fl->coalDeaths(), fl->splitBirths(), fl->splitDeaths());
-    bfrSurp     += fl->bfrSurp();
-    surplus     += fl->surplus();
-    desired     += fl->desired();
-    prevSweep   += fl->prevSweep();
-    beforeSweep += fl->beforeSweep();
-    count       += fl->count();
-    coalBirths  += fl->coalBirths();
-    coalDeaths  += fl->coalDeaths();
-    splitBirths += fl->splitBirths();
-    splitDeaths += fl->splitDeaths();
+    totalFree += fl->count() * fl->size();
+    if (i % (40*IndexSetStride) == 0) {
+      FreeList::print_labels_on(gclog_or_tty, "size");
+    }
+    fl->print_on(gclog_or_tty);
+    total.set_bfrSurp(    total.bfrSurp()     + fl->bfrSurp()    );
+    total.set_surplus(    total.surplus()     + fl->surplus()    );
+    total.set_desired(    total.desired()     + fl->desired()    );
+    total.set_prevSweep(  total.prevSweep()   + fl->prevSweep()  );
+    total.set_beforeSweep(total.beforeSweep() + fl->beforeSweep());
+    total.set_count(      total.count()       + fl->count()      );
+    total.set_coalBirths( total.coalBirths()  + fl->coalBirths() );
+    total.set_coalDeaths( total.coalDeaths()  + fl->coalDeaths() );
+    total.set_splitBirths(total.splitBirths() + fl->splitBirths());
+    total.set_splitDeaths(total.splitDeaths() + fl->splitDeaths());
   }
-  gclog_or_tty->print("%4s\t"
-            "%7d\t"      "%7d\t"     "%7d\t"        "%7d\t"       "%7d\t"
-            "%7d\t"      "%7d\t"     "%7d\t"        "%7d\t"       "%7d\t" "\n",
-            "totl",
-            bfrSurp,     surplus,     desired,     prevSweep,     beforeSweep,
-            count,       coalBirths,  coalDeaths,  splitBirths,   splitDeaths);
-  gclog_or_tty->print_cr("Total free in indexed lists %d words", totalFree);
+  total.print_on(gclog_or_tty, "TOTAL");
+  gclog_or_tty->print_cr("Total free in indexed lists "
+                         SIZE_FORMAT " words", totalFree);
   gclog_or_tty->print("growth: %8.5f  deficit: %8.5f\n",
-    (double)(splitBirths+coalBirths-splitDeaths-coalDeaths)/
-            (prevSweep != 0 ? (double)prevSweep : 1.0),
-    (double)(desired - count)/(desired != 0 ? (double)desired : 1.0));
+    (double)(total.splitBirths()+total.coalBirths()-total.splitDeaths()-total.coalDeaths())/
+            (total.prevSweep() != 0 ? (double)total.prevSweep() : 1.0),
+    (double)(total.desired() - total.count())/(total.desired() != 0 ? (double)total.desired() : 1.0));
   _dictionary->printDictCensus();
 }
 

--- a/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.hpp	Tue Feb 26 15:57:49 2008 -0800
+++ b/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.hpp	Fri Feb 29 14:42:56 2008 -0800
@@ -418,7 +418,7 @@
   // chunk exists, return NULL.
   FreeChunk* find_chunk_at_end();
 
-  bool adaptive_freelists() { return _adaptive_freelists; }
+  bool adaptive_freelists() const { return _adaptive_freelists; }
 
   void set_collector(CMSCollector* collector) { _collector = collector; }
 
@@ -566,7 +566,7 @@
   FreeChunk* allocateScratch(size_t size);
 
   // returns true if either the small or large linear allocation buffer is empty.
-  bool       linearAllocationWouldFail();
+  bool       linearAllocationWouldFail() const;
 
   // Adjust the chunk for the minimum size.  This version is called in
   // most cases in CompactibleFreeListSpace methods.
@@ -585,6 +585,9 @@
   void      addChunkAndRepairOffsetTable(HeapWord* chunk, size_t size,
               bool coalesced);
 
+  // Support for decisions regarding concurrent collection policy
+  bool should_concurrent_collect() const;
+
   // Support for compaction
   void prepare_for_compaction(CompactPoint* cp);
   void adjust_pointers();
@@ -622,7 +625,7 @@
   // coalescing of chunks during the sweep of garbage.
 
   // Print the statistics for the free lists.
-  void printFLCensus(int sweepCt)         const;
+  void printFLCensus(size_t sweep_count) const;
 
   // Statistics functions
   // Initialize census for lists before the sweep.
@@ -635,12 +638,11 @@
   // Clear the census for each of the free lists.
   void clearFLCensus();
   // Perform functions for the census after the end of the sweep.
-  void endSweepFLCensus(int sweepCt);
+  void endSweepFLCensus(size_t sweep_count);
   // Return true if the count of free chunks is greater
   // than the desired number of free chunks.
   bool coalOverPopulated(size_t size);
 
-
 // Record (for each size):
 //
 //   split-births = #chunks added due to splits in (prev-sweep-end,

--- a/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/freeList.cpp	Tue Feb 26 15:57:49 2008 -0800
+++ b/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/freeList.cpp	Fri Feb 29 14:42:56 2008 -0800
@@ -302,3 +302,29 @@
 #endif
 }
 #endif
+
+// Print the "label line" for free list stats.
+void FreeList::print_labels_on(outputStream* st, const char* c) {
+  st->print("%16s\t", c);
+  st->print("%14s\t"    "%14s\t"    "%14s\t"    "%14s\t"    "%14s\t"
+            "%14s\t"    "%14s\t"    "%14s\t"    "%14s\t"    "%14s\t"    "\n",
+            "bfrsurp", "surplus", "desired", "prvSwep", "bfrSwep",
+            "count",   "cBirths", "cDeaths", "sBirths", "sDeaths");
+}
+
+// Print the AllocationStats for the given free list. If the second argument
+// to the call is a non-null string, it is printed in the first column;
+// otherwise, if the argument is null (the default), then the size of the
+// (free list) block is printed in the first column.
+void FreeList::print_on(outputStream* st, const char* c) const {
+  if (c != NULL) {
+    st->print("%16s", c);
+  } else {
+    st->print(SIZE_FORMAT_W(16), size());
+  }
+  st->print("\t"
+           SSIZE_FORMAT_W(14) "\t" SSIZE_FORMAT_W(14) "\t" SSIZE_FORMAT_W(14) "\t" SSIZE_FORMAT_W(14) "\t" SSIZE_FORMAT_W(14) "\t"
+           SSIZE_FORMAT_W(14) "\t" SSIZE_FORMAT_W(14) "\t" SSIZE_FORMAT_W(14) "\t" SSIZE_FORMAT_W(14) "\t" SSIZE_FORMAT_W(14) "\n",
+           bfrSurp(),             surplus(),             desired(),             prevSweep(),           beforeSweep(),
+           count(),               coalBirths(),          coalDeaths(),          splitBirths(),         splitDeaths());
+}

--- a/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/freeList.hpp	Tue Feb 26 15:57:49 2008 -0800
+++ b/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/freeList.hpp	Fri Feb 29 14:42:56 2008 -0800
@@ -38,6 +38,7 @@
 
 class FreeList VALUE_OBJ_CLASS_SPEC {
   friend class CompactibleFreeListSpace;
+  friend class printTreeCensusClosure;
   FreeChunk*    _head;          // List of free chunks
   FreeChunk*    _tail;          // Tail of list of free chunks
   size_t        _size;          // Size in Heap words of each chunks
@@ -63,10 +64,11 @@
  protected:
   void init_statistics();
   void set_count(ssize_t v) { _count = v;}
-  void increment_count() { _count++; }
+  void increment_count()    { _count++; }
   void decrement_count() {
     _count--;
-    assert(_count >= 0, "Count should not be negative"); }
+    assert(_count >= 0, "Count should not be negative");
+  }
 
  public:
   // Constructor
@@ -159,6 +161,10 @@
   ssize_t desired() const {
     return _allocation_stats.desired();
   }
+  void set_desired(ssize_t v) {
+    assert_proper_lock_protection();
+    _allocation_stats.set_desired(v);
+  }
   void compute_desired(float inter_sweep_current,
                        float inter_sweep_estimate) {
     assert_proper_lock_protection();
@@ -298,4 +304,8 @@
   // Verify that the chunk is in the list.
   // found.  Return NULL if "fc" is not found.
   bool verifyChunkInFreeLists(FreeChunk* fc) const;
+
+  // Printing support
+  static void print_labels_on(outputStream* st, const char* c);
+  void print_on(outputStream* st, const char* c = NULL) const;
 };

--- a/hotspot/src/share/vm/gc_implementation/includeDB_gc_shared	Tue Feb 26 15:57:49 2008 -0800
+++ b/hotspot/src/share/vm/gc_implementation/includeDB_gc_shared	Fri Feb 29 14:42:56 2008 -0800
@@ -19,15 +19,22 @@
 // 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.
-//  
+//
 //
 
 // NOTE: DO NOT CHANGE THIS COPYRIGHT TO NEW STYLE - IT WILL BREAK makeDeps!
 
-gcAdaptivePolicyCounters.hpp		adaptiveSizePolicy.hpp
-gcAdaptivePolicyCounters.hpp		gcPolicyCounters.hpp
+allocationStats.cpp                     allocationStats.hpp
+allocationStats.cpp                     ostream.hpp
 
-gcAdaptivePolicyCounters.cpp		resourceArea.hpp
+allocationStats.hpp                     allocation.hpp
+allocationStats.hpp                     gcUtil.hpp
+allocationStats.hpp                     globalDefinitions.hpp
+
+gcAdaptivePolicyCounters.hpp            adaptiveSizePolicy.hpp
+gcAdaptivePolicyCounters.hpp            gcPolicyCounters.hpp
+
+gcAdaptivePolicyCounters.cpp            resourceArea.hpp
 gcAdaptivePolicyCounters.cpp            gcAdaptivePolicyCounters.hpp
 
 gSpaceCounters.cpp                      generation.hpp
@@ -44,7 +51,7 @@
 
 isGCActiveMark.hpp                      parallelScavengeHeap.hpp
 
-markSweep.inline.hpp			psParallelCompact.hpp
+markSweep.inline.hpp                    psParallelCompact.hpp
 
 mutableNUMASpace.cpp                    mutableNUMASpace.hpp
 mutableNUMASpace.cpp                    sharedHeap.hpp

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/gc_implementation/shared/allocationStats.cpp	Fri Feb 29 14:42:56 2008 -0800
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2005 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/_allocationStats.cpp.incl"
+
+// Technically this should be derived from machine speed, and
+// ideally it would be dynamically adjusted.
+float AllocationStats::_threshold = ((float)CMS_SweepTimerThresholdMillis)/1000;

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/gc_implementation/shared/allocationStats.hpp	Fri Feb 29 14:42:56 2008 -0800
@@ -0,0 +1,138 @@
+/*
+ * Copyright 2001-2005 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 AllocationStats VALUE_OBJ_CLASS_SPEC {
+  // A duration threshold (in ms) used to filter
+  // possibly unreliable samples.
+  static float _threshold;
+
+  // We measure the demand between the end of the previous sweep and
+  // beginning of this sweep:
+  //   Count(end_last_sweep) - Count(start_this_sweep)
+  //     + splitBirths(between) - splitDeaths(between)
+  // The above number divided by the time since the start [END???] of the
+  // previous sweep gives us a time rate of demand for blocks
+  // of this size. We compute a padded average of this rate as
+  // our current estimate for the time rate of demand for blocks
+  // of this size. Similarly, we keep a padded average for the time
+  // between sweeps. Our current estimate for demand for blocks of
+  // this size is then simply computed as the product of these two
+  // estimates.
+  AdaptivePaddedAverage _demand_rate_estimate;
+
+  ssize_t     _desired;          // Estimate computed as described above
+  ssize_t     _coalDesired;     // desired +/- small-percent for tuning coalescing
+
+  ssize_t     _surplus;         // count - (desired +/- small-percent),
+                                // used to tune splitting in best fit
+  ssize_t     _bfrSurp;         // surplus at start of current sweep
+  ssize_t     _prevSweep;       // count from end of previous sweep
+  ssize_t     _beforeSweep;     // count from before current sweep
+  ssize_t     _coalBirths;      // additional chunks from coalescing
+  ssize_t     _coalDeaths;      // loss from coalescing
+  ssize_t     _splitBirths;     // additional chunks from splitting
+  ssize_t     _splitDeaths;     // loss from splitting
+  size_t     _returnedBytes;    // number of bytes returned to list.
+ public:
+  void initialize() {
+    AdaptivePaddedAverage* dummy =
+      new (&_demand_rate_estimate) AdaptivePaddedAverage(CMS_FLSWeight,
+                                                         CMS_FLSPadding);
+    _desired = 0;
+    _coalDesired = 0;
+    _surplus = 0;
+    _bfrSurp = 0;
+    _prevSweep = 0;
+    _beforeSweep = 0;
+    _coalBirths = 0;
+    _coalDeaths = 0;
+    _splitBirths = 0;
+    _splitDeaths = 0;
+    _returnedBytes = 0;
+  }
+
+  AllocationStats() {
+    initialize();
+  }
+  // The rate estimate is in blocks per second.
+  void compute_desired(size_t count,
+                       float inter_sweep_current,
+                       float inter_sweep_estimate) {
+    // If the latest inter-sweep time is below our granularity
+    // of measurement, we may call in here with
+    // inter_sweep_current == 0. However, even for suitably small
+    // but non-zero inter-sweep durations, we may not trust the accuracy
+    // of accumulated data, since it has not been "integrated"
+    // (read "low-pass-filtered") long enough, and would be
+    // vulnerable to noisy glitches. In such cases, we
+    // ignore the current sample and use currently available
+    // historical estimates.
+    if (inter_sweep_current > _threshold) {
+      ssize_t demand = prevSweep() - count + splitBirths() - splitDeaths();
+      float rate = ((float)demand)/inter_sweep_current;
+      _demand_rate_estimate.sample(rate);
+      _desired = (ssize_t)(_demand_rate_estimate.padded_average()
+                           *inter_sweep_estimate);
+    }
+  }
+
+  ssize_t desired() const { return _desired; }
+  void set_desired(ssize_t v) { _desired = v; }
+
+  ssize_t coalDesired() const { return _coalDesired; }
+  void set_coalDesired(ssize_t v) { _coalDesired = v; }
+
+  ssize_t surplus() const { return _surplus; }
+  void set_surplus(ssize_t v) { _surplus = v; }
+  void increment_surplus() { _surplus++; }
+  void decrement_surplus() { _surplus--; }
+
+  ssize_t bfrSurp() const { return _bfrSurp; }
+  void set_bfrSurp(ssize_t v) { _bfrSurp = v; }
+  ssize_t prevSweep() const { return _prevSweep; }
+  void set_prevSweep(ssize_t v) { _prevSweep = v; }
+  ssize_t beforeSweep() const { return _beforeSweep; }
+  void set_beforeSweep(ssize_t v) { _beforeSweep = v; }
+
+  ssize_t coalBirths() const { return _coalBirths; }
+  void set_coalBirths(ssize_t v) { _coalBirths = v; }
+  void increment_coalBirths() { _coalBirths++; }
+
+  ssize_t coalDeaths() const { return _coalDeaths; }
+  void set_coalDeaths(ssize_t v) { _coalDeaths = v; }
+  void increment_coalDeaths() { _coalDeaths++; }
+
+  ssize_t splitBirths() const { return _splitBirths; }
+  void set_splitBirths(ssize_t v) { _splitBirths = v; }
+  void increment_splitBirths() { _splitBirths++; }
+
+  ssize_t splitDeaths() const { return _splitDeaths; }
+  void set_splitDeaths(ssize_t v) { _splitDeaths = v; }
+  void increment_splitDeaths() { _splitDeaths++; }
+
+  NOT_PRODUCT(
+    size_t returnedBytes() const { return _returnedBytes; }
+    void set_returnedBytes(size_t v) { _returnedBytes = v; }
+  )
+};

--- a/hotspot/src/share/vm/includeDB_core	Tue Feb 26 15:57:49 2008 -0800
+++ b/hotspot/src/share/vm/includeDB_core	Fri Feb 29 14:42:56 2008 -0800
@@ -19,7 +19,7 @@
 // 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.
-//  
+//
 //
 
 // NOTE: DO NOT CHANGE THIS COPYRIGHT TO NEW STYLE - IT WILL BREAK makeDeps!
@@ -46,13 +46,13 @@
 // as dependencies.  Header files named H.inline.hpp generally contain
 // bodies for inline functions declared in H.hpp.
 //
-// NOTE: Files that use the token "generate_platform_dependent_include" 
+// NOTE: Files that use the token "generate_platform_dependent_include"
 // are expected to contain macro references like <os>, <arch_model>, ... and
 // makedeps has a dependency on these platform files looking like:
-// foo_<macro>.trailing_string 
+// foo_<macro>.trailing_string
 // (where "trailing_string" can be any legal filename strings but typically
 // is "hpp" or "inline.hpp").
-// 
+//
 // The dependency in makedeps (and enforced) is that an underscore
 // will precedure the macro invocation. Note that this restriction
 // is only enforced on filenames that have the dependency token
@@ -148,12 +148,6 @@
 
 allocation.inline.hpp                   os.hpp
 
-allocationStats.cpp                     allocationStats.hpp
-
-allocationStats.hpp                     allocation.hpp
-allocationStats.hpp                     gcUtil.hpp
-allocationStats.hpp                     globalDefinitions.hpp
-
 aprofiler.cpp                           aprofiler.hpp
 aprofiler.cpp                           collectedHeap.inline.hpp
 aprofiler.cpp                           oop.inline.hpp
@@ -1935,7 +1929,7 @@
 
 init.cpp                                bytecodes.hpp
 init.cpp                                collectedHeap.hpp
-init.cpp				handles.inline.hpp
+init.cpp                                handles.inline.hpp
 init.cpp                                icBuffer.hpp
 init.cpp                                icache.hpp
 init.cpp                                init.hpp

--- a/hotspot/src/share/vm/memory/allocationStats.cpp	Tue Feb 26 15:57:49 2008 -0800
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,30 +0,0 @@
-/*
- * Copyright 2005 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/_allocationStats.cpp.incl"
-
-// Technically this should be derived from machine speed, and
-// ideally it would be dynamically adjusted.
-float AllocationStats::_threshold = ((float)CMS_SweepTimerThresholdMillis)/1000;

--- a/hotspot/src/share/vm/memory/allocationStats.hpp	Tue Feb 26 15:57:49 2008 -0800
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,136 +0,0 @@
-/*
- * Copyright 2001-2005 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 AllocationStats VALUE_OBJ_CLASS_SPEC {
-  // A duration threshold (in ms) used to filter
-  // possibly unreliable samples.
-  static float _threshold;
-
-  // We measure the demand between the end of the previous sweep and
-  // beginning of this sweep:
-  //   Count(end_last_sweep) - Count(start_this_sweep)
-  //     + splitBirths(between) - splitDeaths(between)
-  // The above number divided by the time since the start [END???] of the
-  // previous sweep gives us a time rate of demand for blocks
-  // of this size. We compute a padded average of this rate as
-  // our current estimate for the time rate of demand for blocks
-  // of this size. Similarly, we keep a padded average for the time
-  // between sweeps. Our current estimate for demand for blocks of
-  // this size is then simply computed as the product of these two
-  // estimates.
-  AdaptivePaddedAverage _demand_rate_estimate;
-
-  ssize_t     _desired;          // Estimate computed as described above
-  ssize_t     _coalDesired;     // desired +/- small-percent for tuning coalescing
-
-  ssize_t     _surplus;         // count - (desired +/- small-percent),
-                                // used to tune splitting in best fit
-  ssize_t     _bfrSurp;         // surplus at start of current sweep
-  ssize_t     _prevSweep;       // count from end of previous sweep
-  ssize_t     _beforeSweep;     // count from before current sweep
-  ssize_t     _coalBirths;      // additional chunks from coalescing
-  ssize_t     _coalDeaths;      // loss from coalescing
-  ssize_t     _splitBirths;     // additional chunks from splitting
-  ssize_t     _splitDeaths;     // loss from splitting
-  size_t     _returnedBytes;    // number of bytes returned to list.
- public:
-  void initialize() {
-    AdaptivePaddedAverage* dummy =
-      new (&_demand_rate_estimate) AdaptivePaddedAverage(CMS_FLSWeight,
-                                                         CMS_FLSPadding);
-    _desired = 0;
-    _coalDesired = 0;
-    _surplus = 0;
-    _bfrSurp = 0;
-    _prevSweep = 0;
-    _beforeSweep = 0;
-    _coalBirths = 0;
-    _coalDeaths = 0;
-    _splitBirths = 0;
-    _splitDeaths = 0;
-    _returnedBytes = 0;
-  }
-
-  AllocationStats() {
-    initialize();
-  }
-  // The rate estimate is in blocks per second.
-  void compute_desired(size_t count,
-                       float inter_sweep_current,
-                       float inter_sweep_estimate) {
-    // If the latest inter-sweep time is below our granularity
-    // of measurement, we may call in here with
-    // inter_sweep_current == 0. However, even for suitably small
-    // but non-zero inter-sweep durations, we may not trust the accuracy
-    // of accumulated data, since it has not been "integrated"
-    // (read "low-pass-filtered") long enough, and would be
-    // vulnerable to noisy glitches. In such cases, we
-    // ignore the current sample and use currently available
-    // historical estimates.
-    if (inter_sweep_current > _threshold) {
-      ssize_t demand = prevSweep() - count + splitBirths() - splitDeaths();
-      float rate = ((float)demand)/inter_sweep_current;
-      _demand_rate_estimate.sample(rate);
-      _desired = (ssize_t)(_demand_rate_estimate.padded_average()
-                           *inter_sweep_estimate);
-    }
-  }
-
-  ssize_t desired() const { return _desired; }
-  ssize_t coalDesired() const { return _coalDesired; }
-  void set_coalDesired(ssize_t v) { _coalDesired = v; }
-
-  ssize_t surplus() const { return _surplus; }
-  void set_surplus(ssize_t v) { _surplus = v; }
-  void increment_surplus() { _surplus++; }
-  void decrement_surplus() { _surplus--; }
-
-  ssize_t bfrSurp() const { return _bfrSurp; }
-  void set_bfrSurp(ssize_t v) { _bfrSurp = v; }
-  ssize_t prevSweep() const { return _prevSweep; }
-  void set_prevSweep(ssize_t v) { _prevSweep = v; }
-  ssize_t beforeSweep() const { return _beforeSweep; }
-  void set_beforeSweep(ssize_t v) { _beforeSweep = v; }
-
-  ssize_t coalBirths() const { return _coalBirths; }
-  void set_coalBirths(ssize_t v) { _coalBirths = v; }
-  void increment_coalBirths() { _coalBirths++; }
-
-  ssize_t coalDeaths() const { return _coalDeaths; }
-  void set_coalDeaths(ssize_t v) { _coalDeaths = v; }
-  void increment_coalDeaths() { _coalDeaths++; }
-
-  ssize_t splitBirths() const { return _splitBirths; }
-  void set_splitBirths(ssize_t v) { _splitBirths = v; }
-  void increment_splitBirths() { _splitBirths++; }
-
-  ssize_t splitDeaths() const { return _splitDeaths; }
-  void set_splitDeaths(ssize_t v) { _splitDeaths = v; }
-  void increment_splitDeaths() { _splitDeaths++; }
-
-  NOT_PRODUCT(
-    size_t returnedBytes() const { return _returnedBytes; }
-    void set_returnedBytes(size_t v) { _returnedBytes = v; }
-  )
-};