--- a/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp	Fri Mar 15 11:44:33 2013 -0700
+++ b/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp	Mon Mar 18 09:34:58 2013 +0100
@@ -6068,6 +6068,10 @@
   verify_work_stacks_empty();
   verify_overflow_empty();
 
+  if (should_unload_classes()) {
+    ClassLoaderDataGraph::purge();
+  }
+
   _intra_sweep_timer.stop();
   _intra_sweep_estimate.sample(_intra_sweep_timer.seconds());
 

--- a/hotspot/src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.cpp	Fri Mar 15 11:44:33 2013 -0700
+++ b/hotspot/src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.cpp	Mon Mar 18 09:34:58 2013 +0100
@@ -656,7 +656,7 @@
     tty->print_cr("[Accumulated GC generation 0 time %3.7f secs]", time);
   }
   if (TraceGen1Time) {
-    double time = PSMarkSweep::accumulated_time()->seconds();
+    double time = UseParallelOldGC ? PSParallelCompact::accumulated_time()->seconds() : PSMarkSweep::accumulated_time()->seconds();
     tty->print_cr("[Accumulated GC generation 1 time %3.7f secs]", time);
   }
 }

--- a/hotspot/src/share/vm/memory/genCollectedHeap.cpp	Fri Mar 15 11:44:33 2013 -0700
+++ b/hotspot/src/share/vm/memory/genCollectedHeap.cpp	Mon Mar 18 09:34:58 2013 +0100
@@ -554,6 +554,8 @@
     }
 
     if (complete) {
+      // Delete metaspaces for unloaded class loaders and clean up loader_data graph
+      ClassLoaderDataGraph::purge();
       // Resize the metaspace capacity after full collections
       MetaspaceGC::compute_new_size();
       update_full_collections_completed();
@@ -564,11 +566,6 @@
 
     gc_epilogue(complete);
 
-    // Delete metaspaces for unloaded class loaders and clean up loader_data graph
-    if (complete) {
-      ClassLoaderDataGraph::purge();
-    }
-
     if (must_restore_marks_for_biased_locking) {
       BiasedLocking::restore_marks();
     }

--- a/hotspot/src/share/vm/memory/metaspace.cpp	Fri Mar 15 11:44:33 2013 -0700
+++ b/hotspot/src/share/vm/memory/metaspace.cpp	Mon Mar 18 09:34:58 2013 +0100
@@ -1308,8 +1308,7 @@
       gclog_or_tty->print_cr("  metaspace HWM: %.1fK", new_capacity_until_GC / (double) K);
     }
   }
-  assert(vsl->used_bytes_sum() == used_after_gc &&
-         used_after_gc <= vsl->capacity_bytes_sum(),
+  assert(used_after_gc <= vsl->capacity_bytes_sum(),
          "sanity check");
 
 }
@@ -1969,6 +1968,9 @@
 }
 
 SpaceManager::~SpaceManager() {
+  // This call this->_lock which can't be done while holding expand_lock()
+  const size_t in_use_before = sum_capacity_in_chunks_in_use();
+
   MutexLockerEx fcl(SpaceManager::expand_lock(),
                     Mutex::_no_safepoint_check_flag);
 
@@ -1986,7 +1988,7 @@
 
   // Have to update before the chunks_in_use lists are emptied
   // below.
-  chunk_manager->inc_free_chunks_total(sum_capacity_in_chunks_in_use(),
+  chunk_manager->inc_free_chunks_total(in_use_before,
                                        sum_count_in_chunks_in_use());
 
   // Add all the chunks in use by this space manager