8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders

Reviewed-by: johnc, coleenp

1 files changed, 9 insertions, 0 deletions

diff --git a/src/share/vm/memory/collectorPolicy.cpp b/src/share/vm/memory/collectorPolicy.cpp
index c6eee674d..6857181a5 100644
--- a/src/share/vm/memory/collectorPolicy.cpp
+++ b/src/share/vm/memory/collectorPolicy.cpp
@@ -777,6 +777,15 @@ MetaWord* CollectorPolicy::satisfy_failed_metadata_allocation(
                                        full_gc_count,
                                        GCCause::_metadata_GC_threshold);
     VMThread::execute(&op);
+
+    // If GC was locked out, try again.  Check
+    // before checking success because the prologue
+    // could have succeeded and the GC still have
+    // been locked out.
+    if (op.gc_locked()) {
+      continue;
+    }
+
     if (op.prologue_succeeded()) {
       return op.result();
     }