Turn on DCHECKs and other debugging code if dcheck_always_on is 1

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/allocation.h"
@@ skipping 1212 matching lines @@
 #endif
 
   inline void VerifyApiCallResultType();
 
   // Prints this object without details.
   void ShortPrint(FILE* out = stdout);
 
   // Prints this object without details to a message accumulator.
   void ShortPrint(StringStream* accumulator);
 
+  void ShortPrint(std::ostream& os);  // NOLINT
+
   DECLARE_CAST(Object)
 
   // Layout description.
   static const int kHeaderSize = 0;  // Object does not take up any space.
 
 #ifdef OBJECT_PRINT
   // For our gdb macros, we should perhaps change these in the future.
   void Print();
 
   // Prints this object with details.
   void Print(std::ostream& os);  // NOLINT
+#else
+  void Print() { ShortPrint(); }
+  void Print(std::ostream& os) { ShortPrint(os); }  // NOLINT
 #endif
 
  private:
   friend class LookupIterator;
   friend class PrototypeIterator;
 
   // Return the map of the root of object's prototype chain.
   Map* GetRootMap(Isolate* isolate);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(Object);
@@ skipping 876 matching lines @@
 
   DECLARE_CAST(JSObject)
 
   // Dispatched behavior.
   void JSObjectShortPrint(StringStream* accumulator);
   DECLARE_PRINTER(JSObject)
   DECLARE_VERIFIER(JSObject)
 #ifdef OBJECT_PRINT
   void PrintProperties(std::ostream& os);   // NOLINT
   void PrintElements(std::ostream& os);     // NOLINT
+#endif
+#ifdef DEBUG
   void PrintTransitions(std::ostream& os);  // NOLINT
 #endif
 
   static void PrintElementsTransition(
       FILE* file, Handle<JSObject> object,
       ElementsKind from_kind, Handle<FixedArrayBase> from_elements,
       ElementsKind to_kind, Handle<FixedArrayBase> to_elements);
 
   void PrintInstanceMigration(FILE* file, Map* original_map, Map* new_map);
 
@@ skipping 906 matching lines @@
 
   // Layout description for the bridge array.
   static const int kEnumCacheBridgeCacheOffset = FixedArray::kHeaderSize;
 
   // Layout of descriptor.
   static const int kDescriptorKey = 0;
   static const int kDescriptorDetails = 1;
   static const int kDescriptorValue = 2;
   static const int kDescriptorSize = 3;
 
-#ifdef OBJECT_PRINT
+#ifdef DEBUG
   // For our gdb macros, we should perhaps change these in the future.
   void Print();
 
   // Print all the descriptors.
   void PrintDescriptors(std::ostream& os);  // NOLINT
 #endif
 
 #ifdef DEBUG

[Jakob Kummerow, 2014/12/04 08:59:45]

join this with the above block please

   // Is the descriptor array sorted and without duplicates?
   bool IsSortedNoDuplicates(int valid_descriptors = -1);
 
   // Is the descriptor array consistent with the back pointers in targets?
   bool IsConsistentWithBackPointers(Map* current_map);
 
   // Are two DescriptorArrays equal?
   bool IsEqualTo(DescriptorArray* other);
 #endif
 
@@ skipping 5864 matching lines @@
   DECLARE_CAST(String)
 
   void PrintOn(FILE* out);
 
   // For use during stack traces.  Performs rudimentary sanity check.
   bool LooksValid();
 
   // Dispatched behavior.
   void StringShortPrint(StringStream* accumulator);
   void PrintUC16(std::ostream& os, int start = 0, int end = -1);  // NOLINT
-#ifdef OBJECT_PRINT
+#ifdef DEBUG
   char* ToAsciiArray();
 #endif
   DECLARE_PRINTER(String)
   DECLARE_VERIFIER(String)
 
   inline bool IsFlat();
 
   // Layout description.
   static const int kLengthOffset = Name::kSize;
   static const int kSize = kLengthOffset + kPointerSize;
@@ skipping 2035 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_