1.1 --- a/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp Thu Dec 02 13:20:39 2010 -0500
1.2 +++ b/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp Tue Dec 07 16:47:42 2010 -0500
1.3 @@ -479,6 +479,7 @@
1.4 // region before we need to do a collection again.
1.5 size_t min_length = _g1->young_list()->length() + 1;
1.6 _young_list_target_length = MAX2(_young_list_target_length, min_length);
1.7 + calculate_max_gc_locker_expansion();
1.8 calculate_survivors_policy();
1.9 }
1.10
1.11 @@ -2301,6 +2302,21 @@
1.12 };
1.13 }
1.14
1.15 +void G1CollectorPolicy::calculate_max_gc_locker_expansion() {
1.16 + size_t expansion_region_num = 0;
1.17 + if (GCLockerEdenExpansionPercent > 0) {
1.18 + double perc = (double) GCLockerEdenExpansionPercent / 100.0;
1.19 + double expansion_region_num_d = perc * (double) _young_list_target_length;
1.20 + // We use ceiling so that if expansion_region_num_d is > 0.0 (but
1.21 + // less than 1.0) we'll get 1.
1.22 + expansion_region_num = (size_t) ceil(expansion_region_num_d);
1.23 + } else {
1.24 + assert(expansion_region_num == 0, "sanity");
1.25 + }
1.26 + _young_list_max_length = _young_list_target_length + expansion_region_num;
1.27 + assert(_young_list_target_length <= _young_list_max_length, "post-condition");
1.28 +}
1.29 +
1.30 // Calculates survivor space parameters.
1.31 void G1CollectorPolicy::calculate_survivors_policy()
1.32 {
