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8027675: Full collections with Serial slower in JDK 8 compared to 7u40

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Reduced the number of calls to follow_class_loader and instead marked and pushed the klass holder directly. Also removed unneeded calls to adjust_klass.

Reviewed-by: coleenp, jmasa, mgerdin, tschatzl
This commit is contained in:
Stefan Johansson 2013-11-26 14:35:38 +01:00
parent 3646381ba6
commit 22478ae2e0
6 changed files with 12 additions and 35 deletions
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19
hotspot/src/share/vm/gc_implementation/shared/markSweep.cpp
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@ -66,29 +66,10 @@ void MarkSweep::AdjustKlassClosure::do_klass(Klass* klass) {
klass->oops_do(&MarkSweep::adjust_pointer_closure);
}
void MarkSweep::follow_klass(Klass* klass) {
ClassLoaderData* cld = klass->class_loader_data();
// The actual processing of the klass is done when we
// traverse the list of Klasses in the class loader data.
MarkSweep::follow_class_loader(cld);
}
void MarkSweep::adjust_klass(Klass* klass) {
ClassLoaderData* cld = klass->class_loader_data();
// The actual processing of the klass is done when we
// traverse the list of Klasses in the class loader data.
MarkSweep::adjust_class_loader(cld);
}
void MarkSweep::follow_class_loader(ClassLoaderData* cld) {
cld->oops_do(&MarkSweep::mark_and_push_closure, &MarkSweep::follow_klass_closure, true);
}
void MarkSweep::adjust_class_loader(ClassLoaderData* cld) {
cld->oops_do(&MarkSweep::adjust_pointer_closure, &MarkSweep::adjust_klass_closure, true);
}
void MarkSweep::follow_stack() {
do {
while (!_marking_stack.is_empty()) {