Mercurial > hg > truffle
comparison src/share/vm/gc_implementation/g1/g1MarkSweep.cpp @ 17634:5a32d2a3cc1e
8027476: Improve performance of Stringtable unlink
8027455: Improve symbol table scan times during gc pauses
Summary: Parallelize string table and symbol table scan during remark and full GC. Some additional statistics output if the experimental flag G1TraceStringSymbolTableScrubbing is set.
Reviewed-by: mgerdin, coleenp, brutisso
| author | tschatzl |
|---|---|
| date | Mon, 20 Jan 2014 11:47:07 +0100 |
| parents | d55c004e1d4d |
| children | 870aedf4ba4f 58fc1b1523dc |
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| 17633:04f1d5d36714 | 17634:5a32d2a3cc1e |
|---|---|
| 161 CodeCache::do_unloading(&GenMarkSweep::is_alive, purged_class); | 161 CodeCache::do_unloading(&GenMarkSweep::is_alive, purged_class); |
| 162 | 162 |
| 163 // Prune dead klasses from subklass/sibling/implementor lists. | 163 // Prune dead klasses from subklass/sibling/implementor lists. |
| 164 Klass::clean_weak_klass_links(&GenMarkSweep::is_alive); | 164 Klass::clean_weak_klass_links(&GenMarkSweep::is_alive); |
| 165 | 165 |
| 166 // Delete entries for dead interned strings. | 166 // Delete entries for dead interned string and clean up unreferenced symbols in symbol table. |
| 167 StringTable::unlink(&GenMarkSweep::is_alive); | 167 G1CollectedHeap::heap()->unlink_string_and_symbol_table(&GenMarkSweep::is_alive); |
| 168 | |
| 169 // Clean up unreferenced symbols in symbol table. | |
| 170 SymbolTable::unlink(); | |
| 171 | 168 |
| 172 if (VerifyDuringGC) { | 169 if (VerifyDuringGC) { |
| 173 HandleMark hm; // handle scope | 170 HandleMark hm; // handle scope |
| 174 COMPILER2_PRESENT(DerivedPointerTableDeactivate dpt_deact); | 171 COMPILER2_PRESENT(DerivedPointerTableDeactivate dpt_deact); |
| 175 Universe::heap()->prepare_for_verify(); | 172 Universe::heap()->prepare_for_verify(); |