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comparison src/share/vm/gc_implementation/parNew/parNewGeneration.cpp @ 7609:a30e7b564541

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8005972: ParNew should not update the tenuring threshold when promotion failed has occurred Reviewed-by: ysr, johnc, jwilhelm
author brutisso
date Mon, 14 Jan 2013 21:30:45 +0100
parents ca0a78017dc7
children f2110083203d
comparison
equal deleted inserted replaced
7608:689e1218d7fe 7609:a30e7b564541
876 } 876 }
877 877
878 878
879 bool ParNewGeneration::_avoid_promotion_undo = false; 879 bool ParNewGeneration::_avoid_promotion_undo = false;
880 880
881 void ParNewGeneration::adjust_desired_tenuring_threshold() {
882 // Set the desired survivor size to half the real survivor space
883 _tenuring_threshold =
884 age_table()->compute_tenuring_threshold(to()->capacity()/HeapWordSize);
885 }
886
887 // A Generation that does parallel young-gen collection. 881 // A Generation that does parallel young-gen collection.
888 882
889 void ParNewGeneration::collect(bool full, 883 void ParNewGeneration::collect(bool full,
890 bool clear_all_soft_refs, 884 bool clear_all_soft_refs,
891 size_t size, 885 size_t size,
1011 // A successful scavenge should restart the GC time limit count which is 1005 // A successful scavenge should restart the GC time limit count which is
1012 // for full GC's. 1006 // for full GC's.
1013 size_policy->reset_gc_overhead_limit_count(); 1007 size_policy->reset_gc_overhead_limit_count();
1014 1008
1015 assert(to()->is_empty(), "to space should be empty now"); 1009 assert(to()->is_empty(), "to space should be empty now");
1010
1011 adjust_desired_tenuring_threshold();
1016 } else { 1012 } else {
1017 assert(_promo_failure_scan_stack.is_empty(), "post condition"); 1013 assert(_promo_failure_scan_stack.is_empty(), "post condition");
1018 _promo_failure_scan_stack.clear(true); // Clear cached segments. 1014 _promo_failure_scan_stack.clear(true); // Clear cached segments.
1019 1015
1020 remove_forwarding_pointers(); 1016 remove_forwarding_pointers();
1033 } 1029 }
1034 // set new iteration safe limit for the survivor spaces 1030 // set new iteration safe limit for the survivor spaces
1035 from()->set_concurrent_iteration_safe_limit(from()->top()); 1031 from()->set_concurrent_iteration_safe_limit(from()->top());
1036 to()->set_concurrent_iteration_safe_limit(to()->top()); 1032 to()->set_concurrent_iteration_safe_limit(to()->top());
1037 1033
1038 adjust_desired_tenuring_threshold();
1039 if (ResizePLAB) { 1034 if (ResizePLAB) {
1040 plab_stats()->adjust_desired_plab_sz(n_workers); 1035 plab_stats()->adjust_desired_plab_sz(n_workers);
1041 } 1036 }
1042 1037
1043 if (PrintGC && !PrintGCDetails) { 1038 if (PrintGC && !PrintGCDetails) {