Remove more feature in product mode

runtime/vm/heap.cc

 // Copyright (c) 2012, 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/heap.h"
 
 #include "platform/assert.h"
 #include "platform/utils.h"
 #include "vm/flags.h"
 #include "vm/isolate.h"
@@ skipping 344 matching lines @@
 }
 
 
 void Heap::CollectNewSpaceGarbage(Thread* thread,
                                   ApiCallbacks api_callbacks,
                                   GCReason reason) {
   if (BeginNewSpaceGC(thread)) {
     bool invoke_api_callbacks = (api_callbacks == kInvokeApiCallbacks);
     RecordBeforeGC(kNew, reason);
     VMTagScope tagScope(thread, VMTag::kGCNewSpaceTagId);
+#ifndef PRODUCT
     TimelineDurationScope tds(thread,
                               isolate()->GetGCStream(),
                               "CollectNewGeneration");
+#endif  // !PRODUCT
     UpdateClassHeapStatsBeforeGC(kNew);
     new_space_.Scavenge(invoke_api_callbacks);
     isolate()->class_table()->UpdatePromoted();
     UpdatePretenurePolicy();
     RecordAfterGC(kNew);
     PrintStats();
     EndNewSpaceGC();
     if (old_space_.NeedsGarbageCollection()) {
       // Old collections should call the API callbacks.
       CollectOldSpaceGarbage(thread, kInvokeApiCallbacks, kPromotion);
     }
   }
 }
 
 
 void Heap::CollectOldSpaceGarbage(Thread* thread,
                                   ApiCallbacks api_callbacks,
                                   GCReason reason) {
   if (BeginOldSpaceGC(thread)) {
     bool invoke_api_callbacks = (api_callbacks == kInvokeApiCallbacks);
     RecordBeforeGC(kOld, reason);
     VMTagScope tagScope(thread, VMTag::kGCOldSpaceTagId);
+#ifndef PRODUCT
     TimelineDurationScope tds(thread,
                               isolate()->GetGCStream(),
                               "CollectOldGeneration");
+#endif  // !PRODUCT
     UpdateClassHeapStatsBeforeGC(kOld);
     old_space_.MarkSweep(invoke_api_callbacks);
     RecordAfterGC(kOld);
     PrintStats();
     EndOldSpaceGC();
   }
 }
 
 
 void Heap::CollectGarbage(Space space,
@@ skipping 424 matching lines @@
   Dart::vm_isolate()->heap()->WriteProtect(false, include_code_pages_);
 }
 
 
 WritableVMIsolateScope::~WritableVMIsolateScope() {
   ASSERT(Dart::vm_isolate()->heap()->UsedInWords(Heap::kNew) == 0);
   Dart::vm_isolate()->heap()->WriteProtect(true, include_code_pages_);
 }
 
 }  // namespace dart