Mercurial > hg > truffle
diff src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp @ 1991:016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
Summary: Allow the eden to the expanded up to a point when the GC locker is active.
Reviewed-by: jwilhelm, johnc, ysr, jcoomes
| author | tonyp |
|---|---|
| date | Tue, 07 Dec 2010 16:47:42 -0500 |
| parents | 631f79e71e90 |
| children | 5c0b591e1074 |
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--- a/src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp Thu Dec 02 13:20:39 2010 -0500 +++ b/src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp Tue Dec 07 16:47:42 2010 -0500 @@ -196,6 +196,10 @@ size_t _young_list_target_length; size_t _young_list_fixed_length; + // The max number of regions we can extend the eden by while the GC + // locker is active. This should be >= _young_list_target_length; + size_t _young_list_max_length; + size_t _young_cset_length; bool _last_young_gc_full; @@ -1113,13 +1117,22 @@ bool is_young_list_full() { size_t young_list_length = _g1->young_list()->length(); - size_t young_list_max_length = _young_list_target_length; + size_t young_list_target_length = _young_list_target_length; + if (G1FixedEdenSize) { + young_list_target_length -= _max_survivor_regions; + } + return young_list_length >= young_list_target_length; + } + + bool can_expand_young_list() { + size_t young_list_length = _g1->young_list()->length(); + size_t young_list_max_length = _young_list_max_length; if (G1FixedEdenSize) { young_list_max_length -= _max_survivor_regions; } + return young_list_length < young_list_max_length; + } - return young_list_length >= young_list_max_length; - } void update_region_num(bool young); bool in_young_gc_mode() { @@ -1231,6 +1244,8 @@ _survivors_age_table.merge_par(age_table); } + void calculate_max_gc_locker_expansion(); + // Calculates survivor space parameters. void calculate_survivors_policy();