133   // The scope of casr should end after code that can change
 134   // CollectorPolicy::_should_clear_all_soft_refs.
 135   ClearedAllSoftRefs casr(clear_all_softrefs, heap->soft_ref_policy());
 136 
 137   PSYoungGen* young_gen = heap->young_gen();
 138   PSOldGen* old_gen = heap->old_gen();
 139 
 140   // Increment the invocation count
 141   heap->increment_total_collections(true /* full */);
 142 
 143   // Save information needed to minimize mangling
 144   heap->record_gen_tops_before_GC();
 145 
 146   // We need to track unique mark sweep invocations as well.
 147   _total_invocations++;
 148 
 149   heap->print_heap_before_gc();
 150   heap->trace_heap_before_gc(_gc_tracer);
 151 
 152   // Fill in TLABs
 153   heap->accumulate_statistics_all_tlabs();
 154   heap->ensure_parsability(true);  // retire TLABs
 155 
 156   if (VerifyBeforeGC && heap->total_collections() >= VerifyGCStartAt) {
 157     HandleMark hm;  // Discard invalid handles created during verification
 158     Universe::verify("Before GC");
 159   }
 160 
 161   // Verify object start arrays
 162   if (VerifyObjectStartArray &&
 163       VerifyBeforeGC) {
 164     old_gen->verify_object_start_array();
 165   }
 166 
 167   // Filled in below to track the state of the young gen after the collection.
 168   bool eden_empty;
 169   bool survivors_empty;
 170   bool young_gen_empty;
 171 
 172   {
 173     HandleMark hm;

 133   // The scope of casr should end after code that can change
 134   // CollectorPolicy::_should_clear_all_soft_refs.
 135   ClearedAllSoftRefs casr(clear_all_softrefs, heap->soft_ref_policy());
 136 
 137   PSYoungGen* young_gen = heap->young_gen();
 138   PSOldGen* old_gen = heap->old_gen();
 139 
 140   // Increment the invocation count
 141   heap->increment_total_collections(true /* full */);
 142 
 143   // Save information needed to minimize mangling
 144   heap->record_gen_tops_before_GC();
 145 
 146   // We need to track unique mark sweep invocations as well.
 147   _total_invocations++;
 148 
 149   heap->print_heap_before_gc();
 150   heap->trace_heap_before_gc(_gc_tracer);
 151 
 152   // Fill in TLABs

 153   heap->ensure_parsability(true);  // retire TLABs
 154 
 155   if (VerifyBeforeGC && heap->total_collections() >= VerifyGCStartAt) {
 156     HandleMark hm;  // Discard invalid handles created during verification
 157     Universe::verify("Before GC");
 158   }
 159 
 160   // Verify object start arrays
 161   if (VerifyObjectStartArray &&
 162       VerifyBeforeGC) {
 163     old_gen->verify_object_start_array();
 164   }
 165 
 166   // Filled in below to track the state of the young gen after the collection.
 167   bool eden_empty;
 168   bool survivors_empty;
 169   bool young_gen_empty;
 170 
 171   {
 172     HandleMark hm;