--- a/hotspot/src/share/vm/gc_implementation/parallelScavenge/psScavenge.cpp Wed Feb 15 13:06:53 2012 -0500
+++ b/hotspot/src/share/vm/gc_implementation/parallelScavenge/psScavenge.cpp Thu Feb 16 13:12:25 2012 -0800
@@ -215,36 +215,41 @@
//
// Note that this method should only be called from the vm_thread while
// at a safepoint!
-void PSScavenge::invoke() {
+bool PSScavenge::invoke() {
assert(SafepointSynchronize::is_at_safepoint(), "should be at safepoint");
assert(Thread::current() == (Thread*)VMThread::vm_thread(), "should be in vm thread");
assert(!Universe::heap()->is_gc_active(), "not reentrant");
- ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
+ ParallelScavengeHeap* const heap = (ParallelScavengeHeap*)Universe::heap();
assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "Sanity");
PSAdaptiveSizePolicy* policy = heap->size_policy();
IsGCActiveMark mark;
- bool scavenge_was_done = PSScavenge::invoke_no_policy();
+ const bool scavenge_done = PSScavenge::invoke_no_policy();
+ const bool need_full_gc = !scavenge_done ||
+ policy->should_full_GC(heap->old_gen()->free_in_bytes());
+ bool full_gc_done = false;
- PSGCAdaptivePolicyCounters* counters = heap->gc_policy_counters();
- if (UsePerfData)
- counters->update_full_follows_scavenge(0);
- if (!scavenge_was_done ||
- policy->should_full_GC(heap->old_gen()->free_in_bytes())) {
- if (UsePerfData)
- counters->update_full_follows_scavenge(full_follows_scavenge);
+ if (UsePerfData) {
+ PSGCAdaptivePolicyCounters* const counters = heap->gc_policy_counters();
+ const int ffs_val = need_full_gc ? full_follows_scavenge : not_skipped;
+ counters->update_full_follows_scavenge(ffs_val);
+ }
+
+ if (need_full_gc) {
GCCauseSetter gccs(heap, GCCause::_adaptive_size_policy);
CollectorPolicy* cp = heap->collector_policy();
const bool clear_all_softrefs = cp->should_clear_all_soft_refs();
if (UseParallelOldGC) {
- PSParallelCompact::invoke_no_policy(clear_all_softrefs);
+ full_gc_done = PSParallelCompact::invoke_no_policy(clear_all_softrefs);
} else {
- PSMarkSweep::invoke_no_policy(clear_all_softrefs);
+ full_gc_done = PSMarkSweep::invoke_no_policy(clear_all_softrefs);
}
}
+
+ return full_gc_done;
}
// This method contains no policy. You should probably