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runtime/vm/zone.h

 // 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.
 
 #ifndef VM_ZONE_H_
 #define VM_ZONE_H_
 
 #include "platform/utils.h"
 #include "vm/allocation.h"
 #include "vm/handles.h"
 #include "vm/thread.h"
 #include "vm/memory_region.h"
 
 namespace dart {
 
-DECLARE_DEBUG_FLAG(bool, trace_zones);
-
 // Zones support very fast allocation of small chunks of memory. The
 // chunks cannot be deallocated individually, but instead zones
 // support deallocating all chunks in one fast operation.
 
 class Zone {
  public:
   // Allocate an array sized to hold 'len' elements of type
   // 'ElementType'.  Checks for integer overflow when performing the
   // size computation.
   template <class ElementType>
@@ skipping 51 matching lines @@
       previous_(NULL) {
     ASSERT(Utils::IsAligned(position_, kAlignment));
 #ifdef DEBUG
     // Zap the entire initial buffer.
     memset(initial_buffer_.pointer(), kZapUninitializedByte,
            initial_buffer_.size());
 #endif
   }
 
   ~Zone() {  // Delete all memory associated with the zone.
-#if defined(DEBUG)
     if (FLAG_trace_zones) {
       DumpZoneSizes();
     }
-#endif
     DeleteAll();
   }
 
   // All pointers returned from AllocateUnsafe() and New() have this alignment.
   static const intptr_t kAlignment = kDoubleSize;
 
   // Default initial chunk size.
   static const intptr_t kInitialChunkSize = 1 * KB;
 
   // Default segment size.
@@ skipping 23 matching lines @@
   // BaseGrowableArray to use different allocators.
   template <class ElementType>
   void Free(ElementType* old_array, intptr_t len) {
 #ifdef DEBUG
     if (len > 0) {
       memset(old_array, kZapUninitializedByte, len * sizeof(ElementType));
     }
 #endif
   }
 
-#if defined(DEBUG)
   // Dump the current allocated sizes in the zone object.
   void DumpZoneSizes();
-#endif
 
   // Overflow check (FATAL) for array length.
   template <class ElementType>
   static inline void CheckLength(intptr_t len);
 
   // This buffer is used for allocation before any segments.
   // This would act as the initial stack allocated chunk so that we don't
   // end up calling malloc/free on zone scopes that allocate less than
   // kChunkSize
   COMPILE_ASSERT(kAlignment <= 8);
@@ skipping 28 matching lines @@
   template<typename T, typename B, typename Allocator>
   friend class BaseGrowableArray;
   DISALLOW_COPY_AND_ASSIGN(Zone);
 };
 
 
 class StackZone : public StackResource {
  public:
   // Create an empty zone and set is at the current zone for the Thread.
   explicit StackZone(Thread* thread) : StackResource(thread), zone_() {
-#ifdef DEBUG
     if (FLAG_trace_zones) {
       OS::PrintErr("*** Starting a new Stack zone 0x%" Px "(0x%" Px ")\n",
                    reinterpret_cast<intptr_t>(this),
                    reinterpret_cast<intptr_t>(&zone_));
     }
-#endif
     zone_.Link(thread->zone());
     thread->set_zone(&zone_);
   }
 
   // Delete all memory associated with the zone.
   ~StackZone() {
     ASSERT(thread()->zone() == &zone_);
     thread()->set_zone(zone_.previous_);
-#ifdef DEBUG
     if (FLAG_trace_zones) {
       OS::PrintErr("*** Deleting Stack zone 0x%" Px "(0x%" Px ")\n",
                    reinterpret_cast<intptr_t>(this),
                    reinterpret_cast<intptr_t>(&zone_));
     }
-#endif
   }
 
   // Compute the total size of this zone. This includes wasted space that is
   // due to internal fragmentation in the segments.
   intptr_t SizeInBytes() const { return zone_.SizeInBytes(); }
 
   Zone* GetZone() { return &zone_; }
 
  private:
   Zone zone_;
@@ skipping 70 matching lines @@
     memmove(reinterpret_cast<void*>(new_data),
             reinterpret_cast<void*>(old_data),
             old_len * kElementSize);
   }
   return new_data;
 }
 
 }  // namespace dart
 
 #endif  // VM_ZONE_H_