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diff src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp @ 6629:c9814fadeb38

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7041879: G1: introduce stress testing parameter to cause frequent evacuation failures Summary: Add the flags G1EvacuationFailureALot flag (and supporting flags) to force trigger evacuation failures. The support flags control how often to trigger an evacuation failure and during which types of evacuation pause. This functionality is analogous to that of PromotionFailureALot for the other collectors. Reviewed-by: brutisso
author johnc
date Tue, 28 Aug 2012 15:20:08 -0700
parents bb3f6194fedb
children da91efe96a93
line wrap: on
line diff
--- a/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	Thu Aug 23 10:21:12 2012 +0200
+++ b/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	Tue Aug 28 15:20:08 2012 -0700
@@ -915,6 +915,39 @@
   oop handle_evacuation_failure_par(OopsInHeapRegionClosure* cl, oop obj);
   void handle_evacuation_failure_common(oop obj, markOop m);
 
+#ifndef PRODUCT
+  // Support for forcing evacuation failures. Analogous to
+  // PromotionFailureALot for the other collectors.
+
+  // Records whether G1EvacuationFailureALot should be in effect
+  // for the current GC
+  bool _evacuation_failure_alot_for_current_gc;
+
+  // Used to record the GC number for interval checking when
+  // determining whether G1EvaucationFailureALot is in effect
+  // for the current GC.
+  size_t _evacuation_failure_alot_gc_number;
+
+  // Count of the number of evacuations between failures.
+  volatile size_t _evacuation_failure_alot_count;
+
+  // Set whether G1EvacuationFailureALot should be in effect
+  // for the current GC (based upon the type of GC and which
+  // command line flags are set);
+  inline bool evacuation_failure_alot_for_gc_type(bool gcs_are_young,
+                                                  bool during_initial_mark,
+                                                  bool during_marking);
+
+  inline void set_evacuation_failure_alot_for_current_gc();
+
+  // Return true if it's time to cause an evacuation failure.
+  inline bool evacuation_should_fail();
+
+  // Reset the G1EvacuationFailureALot counters.  Should be called at
+  // the end of an evacuation pause in which an evacuation failure ocurred.
+  inline void reset_evacuation_should_fail();
+#endif // !PRODUCT
+
   // ("Weak") Reference processing support.
   //
   // G1 has 2 instances of the referece processor class. One