src/share/vm/gc/parallel/psMarkSweep.cpp

@@ -531,24 +531,35 @@
   }
 
   // This is the point where the entire marking should have completed.
   assert(_marking_stack.is_empty(), "Marking should have completed");
 
+  {
+    GCTraceTime(Debug, gc) t("Class Unloading", _gc_timer);
+
   // Unload classes and purge the SystemDictionary.
   bool purged_class = SystemDictionary::do_unloading(is_alive_closure());
 
   // Unload nmethods.
   CodeCache::do_unloading(is_alive_closure(), purged_class);
 
   // Prune dead klasses from subklass/sibling/implementor lists.
   Klass::clean_weak_klass_links(is_alive_closure());
+  }
 
+  {
+    GCTraceTime(Debug, gc) t("Scrub String Table", _gc_timer);
   // Delete entries for dead interned strings.
   StringTable::unlink(is_alive_closure());
+  }
 
+  {
+    GCTraceTime(Debug, gc) t("Scrub Symbol Table", _gc_timer);
   // Clean up unreferenced symbols in symbol table.
   SymbolTable::unlink();
+  }
+
   _gc_tracer->report_object_count_after_gc(is_alive_closure());
 }
 
 
 void PSMarkSweep::mark_sweep_phase2() {