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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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16
hotspot/src/share/vm/memory/genMarkSweep.cpp
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@ -223,23 +223,23 @@ void GenMarkSweep::mark_sweep_phase1(int level,
&is_alive, &keep_alive, &follow_stack_closure, NULL);
}
// Follow system dictionary roots and unload classes
// This is the point where the entire marking should have completed.
assert(_marking_stack.is_empty(), "Marking should have completed");
// Unload classes and purge the SystemDictionary.
bool purged_class = SystemDictionary::do_unloading(&is_alive);
// Follow code cache roots
// Unload nmethods.
CodeCache::do_unloading(&is_alive, purged_class);
follow_stack(); // 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);
assert(_marking_stack.is_empty(), "just drained");
// Visit interned string tables and delete unmarked oops
// Delete entries for dead interned strings.
StringTable::unlink(&is_alive);
// Clean up unreferenced symbols in symbol table.
SymbolTable::unlink();
assert(_marking_stack.is_empty(), "stack should be empty by now");
}