Remove fields from Isolate in Product mode

runtime/vm/scavenger.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/scavenger.h"
 
 #include "vm/dart.h"
 #include "vm/dart_api_state.h"
 #include "vm/isolate.h"
 #include "vm/lockers.h"
@@ skipping 590 matching lines @@
           EnqueueWeakProperty(cur_weak);
         }
         // Advance to next weak property in the queue.
         cur_weak = reinterpret_cast<RawWeakProperty*>(next_weak);
       }
     }
   }
 }
 
 void Scavenger::UpdateMaxHeapCapacity() {
+#if !defined(PRODUCT)
   if (heap_ == NULL) {
     // Some unit tests.
     return;
   }
   ASSERT(to_ != NULL);
   ASSERT(heap_ != NULL);
   Isolate* isolate = heap_->isolate();
   ASSERT(isolate != NULL);
   isolate->GetHeapNewCapacityMaxMetric()->SetValue(to_->size_in_words() *
                                                    kWordSize);
+#endif  // !defined(PRODUCT)
 }
 
 void Scavenger::UpdateMaxHeapUsage() {
+#if !defined(PRODUCT)
   if (heap_ == NULL) {
     // Some unit tests.
     return;
   }
   ASSERT(to_ != NULL);
   ASSERT(heap_ != NULL);
   Isolate* isolate = heap_->isolate();
   ASSERT(isolate != NULL);
   isolate->GetHeapNewUsedMaxMetric()->SetValue(UsedInWords() * kWordSize);
+#endif  // !defined(PRODUCT)
 }
 
 void Scavenger::EnqueueWeakProperty(RawWeakProperty* raw_weak) {
   ASSERT(raw_weak->IsHeapObject());
   ASSERT(raw_weak->IsNewObject());
   ASSERT(raw_weak->IsWeakProperty());
 #if defined(DEBUG)
   uword raw_addr = RawObject::ToAddr(raw_weak);
   uword header = *reinterpret_cast<uword*>(raw_addr);
   ASSERT(!IsForwarding(header));
@@ skipping 272 matching lines @@
   }
 
   Scavenge();
 
   // It is possible for objects to stay in the new space
   // if the VM cannot create more pages for these objects.
   ASSERT((UsedInWords() == 0) || failed_to_promote_);
 }
 
 }  // namespace dart