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8028993: Full collections with ParallelScavenge slower in JDK 8 compared to 7u40

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Reducing the number of calls to follow_class_loader to speed up the marking phase. Also removed some unnecessary calls to adjust_klass.

Reviewed-by: stefank, jmasa, mgerdin
This commit is contained in:
Stefan Johansson 2013-12-10 10:31:00 +01:00
parent 5d5b1157d1
commit 5f4d0e9c25
8 changed files with 25 additions and 54 deletions
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10
hotspot/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.hpp
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@ -1200,13 +1200,10 @@ class PSParallelCompact : AllStatic {
T* p);
template <class T> static inline void adjust_pointer(T* p);
static void follow_klass(ParCompactionManager* cm, Klass* klass);
static void adjust_klass(ParCompactionManager* cm, Klass* klass);
static inline void follow_klass(ParCompactionManager* cm, Klass* klass);
static void follow_class_loader(ParCompactionManager* cm,
ClassLoaderData* klass);
static void adjust_class_loader(ParCompactionManager* cm,
ClassLoaderData* klass);
// Compaction support.
// Return true if p is in the range [beg_addr, end_addr).
@ -1380,6 +1377,11 @@ inline void PSParallelCompact::adjust_pointer(T* p) {
}
}
inline void PSParallelCompact::follow_klass(ParCompactionManager* cm, Klass* klass) {
oop holder = klass->klass_holder();
PSParallelCompact::mark_and_push(cm, &holder);
}
template <class T>
inline void PSParallelCompact::KeepAliveClosure::do_oop_work(T* p) {
mark_and_push(_compaction_manager, p);