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8013160: NPG: Remove unnecessary mark stack draining after CodeCache::do_unloading

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Reviewed-by: coleenp, mgerdin
This commit is contained in:
Stefan Karlsson 2013-04-26 10:40:36 +02:00
parent a6a565abdf
commit ad20a6bd76
5 changed files with 41 additions and 47 deletions
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14
hotspot/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.cpp
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@ -2354,22 +2354,24 @@ void PSParallelCompact::marking_phase(ParCompactionManager* cm,
}
TraceTime tm_c("class unloading", print_phases(), true, gclog_or_tty);
// This is the point where the entire marking should have completed.
assert(cm->marking_stacks_empty(), "Marking should have completed");
// Follow system dictionary roots and unload classes.
bool purged_class = SystemDictionary::do_unloading(is_alive_closure());
// Follow code cache roots.
// Unload nmethods.
CodeCache::do_unloading(is_alive_closure(), purged_class);
cm->follow_marking_stacks(); // Flush marking stack.
// Update subklass/sibling/implementor links of live klasses
// Prune dead klasses from subklass/sibling/implementor lists.
Klass::clean_weak_klass_links(is_alive_closure());
// Visit interned string tables and delete unmarked oops
// Delete entries for dead interned strings.
StringTable::unlink(is_alive_closure());
// Clean up unreferenced symbols in symbol table.
SymbolTable::unlink();
assert(cm->marking_stacks_empty(), "marking stacks should be empty");
}
void PSParallelCompact::follow_klass(ParCompactionManager* cm, Klass* klass) {