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7144296: PS: Optimize nmethods processing

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Prunes scavenge roots in code list every young GC, promote objects directly pointed by the code immediately

Reviewed-by: johnc, jcoomes
This commit is contained in:
Igor Veresov 2012-02-10 17:40:20 -08:00
parent 01ee621b40
commit 47d1b9ee33
7 changed files with 193 additions and 180 deletions
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5
hotspot/src/share/vm/gc_implementation/parallelScavenge/psScavenge.cpp
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@ -24,6 +24,7 @@
#include "precompiled.hpp"
#include "classfile/symbolTable.hpp"
#include "code/codeCache.hpp"
#include "gc_implementation/parallelScavenge/cardTableExtension.hpp"
#include "gc_implementation/parallelScavenge/gcTaskManager.hpp"
#include "gc_implementation/parallelScavenge/generationSizer.hpp"
@ -100,7 +101,7 @@ public:
// Weak refs may be visited more than once.
if (PSScavenge::should_scavenge(p, _to_space)) {
PSScavenge::copy_and_push_safe_barrier(_promotion_manager, p);
PSScavenge::copy_and_push_safe_barrier<T, /*promote_immediately=*/false>(_promotion_manager, p);
}
}
virtual void do_oop(oop* p) { PSKeepAliveClosure::do_oop_work(p); }
@ -602,6 +603,8 @@ bool PSScavenge::invoke_no_policy() {
NOT_PRODUCT(reference_processor()->verify_no_references_recorded());
CodeCache::prune_scavenge_root_nmethods();
// Re-verify object start arrays
if (VerifyObjectStartArray &&
VerifyAfterGC) {