[Isolates] Convert more static data either to read-only or to per-isolate.

src/log-utils.h

 // Copyright 2006-2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 145 matching lines @@
 
   LogDynamicBuffer* output_buffer_;
 
   // Size of dynamic buffer block (and dynamic buffer initial size).
   static const int kDynamicBufferBlockSize = 65536;
 
   // Maximum size of dynamic buffer.
   static const int kMaxDynamicBufferSize = 50 * 1024 * 1024;
 
   // Message to "seal" dynamic buffer with.
-  static const char* kDynamicBufferSeal;
+  static const char* const kDynamicBufferSeal;
 
   // mutex_ is a Mutex used for enforcing exclusive
   // access to the formatting buffer and the log file or log memory buffer.
   Mutex* mutex_;
 
   // Buffer used for formatting log messages. This is a singleton buffer and
   // mutex_ should be acquired before using it.
   char* message_buffer_;
 
   Logger* logger_;
@@ skipping 26 matching lines @@
   // Returns true, if the record has been stored.
   bool Store(const Vector<const char>& record);
 
  private:
   // The minimum size of a buffer: a place needed for the current and
   // the previous record. Since there is no place for precedessors of a previous
   // record, it can't be compressed at all.
   static const int kNoCompressionWindowSize = 2;
 
   // Formatting strings for back references.
-  static const char* kLineBackwardReferenceFormat;
-  static const char* kBackwardReferenceFormat;
+  static const char* const kLineBackwardReferenceFormat;
+  static const char* const kBackwardReferenceFormat;
 
   static int GetBackwardReferenceSize(int distance, int pos);
 
   static void PrintBackwardReference(Vector<char> dest, int distance, int pos);
 
   ScopedVector< Vector<const char> > buffer_;
   const int kMaxBackwardReferenceSize;
   int curr_;
   int prev_;
 };
@@ skipping 54 matching lines @@
   Log* log_;
   ScopedLock sl;
   int pos_;
 };
 
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 } }  // namespace v8::internal
 
 #endif  // V8_LOG_UTILS_H_