Mercurial > hg > graal-jvmci-8

diff src/share/vm/gc_implementation/concurrentMarkSweep/binaryTreeDictionary.hpp @ 1145:e018e6884bd8

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6631166: CMS: better heuristics when combatting fragmentation Summary: Autonomic per-worker free block cache sizing, tunable coalition policies, fixes to per-size block statistics, retuned gain and bandwidth of some feedback loop filters to allow quicker reactivity to abrupt changes in ambient demand, and other heuristics to reduce fragmentation of the CMS old gen. Also tightened some assertions, including those related to locking. Reviewed-by: jmasa
author ysr
date Wed, 23 Dec 2009 09:23:54 -0800
parents d1605aabd0a1
children c18cbe5936b8
line wrap: on
line diff
--- a/src/share/vm/gc_implementation/concurrentMarkSweep/binaryTreeDictionary.hpp	Wed Dec 16 15:12:51 2009 -0800
+++ b/src/share/vm/gc_implementation/concurrentMarkSweep/binaryTreeDictionary.hpp	Wed Dec 23 09:23:54 2009 -0800
@@ -42,9 +42,6 @@
   friend class AscendTreeCensusClosure;
   friend class DescendTreeCensusClosure;
   friend class DescendTreeSearchClosure;
-  TreeList* _parent;
-  TreeList* _left;
-  TreeList* _right;
 
  protected:
   TreeList* parent() const { return _parent; }
@@ -82,6 +79,11 @@
   // to a TreeChunk.
   TreeChunk* first_available();
 
+  // Returns the block with the largest heap address amongst
+  // those in the list for this size; potentially slow and expensive,
+  // use with caution!
+  TreeChunk* largest_address();
+
   // removeChunkReplaceIfNeeded() removes the given "tc" from the TreeList.
   // If "tc" is the first chunk in the list, it is also the
   // TreeList that is the node in the tree.  removeChunkReplaceIfNeeded()
@@ -254,8 +256,9 @@
   // Methods called at the beginning of a sweep to prepare the
   // statistics for the sweep.
   void       beginSweepDictCensus(double coalSurplusPercent,
-                                  float sweep_current,
-                                  float sweep_estimate);
+                                  float inter_sweep_current,
+                                  float inter_sweep_estimate,
+                                  float intra_sweep_estimate);
   // Methods called after the end of a sweep to modify the
   // statistics for the sweep.
   void       endSweepDictCensus(double splitSurplusPercent);
@@ -269,6 +272,7 @@
   // Print the statistcis for all the lists in the tree.  Also may
   // print out summaries.
   void       printDictCensus(void) const;
+  void       print_free_lists(outputStream* st) const;
 
   // For debugging.  Returns the sum of the _returnedBytes for
   // all lists in the tree.