Handle filling up of memory buffer to make log processing in DevTools Profiler easier.

src/log.h

 // Copyright 2006-2008 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 213 matching lines @@
   static void LogRegExpSource(Handle<JSRegExp> regexp);
 
   // Emits a profiler tick event. Used by the profiler thread.
   static void TickEvent(TickSample* sample, bool overflow);
 
   static void ApiEvent(const char* name, ...);
 
   // Logs a StringEvent regardless of whether FLAG_log is true.
   static void UncheckedStringEvent(const char* name, const char* value);
 
+  // Stops logging and profiling in case of insufficient resources.
+  static void StopLoggingAndProfiling();
+
   // Returns whether profiler's sampler is active.
   static bool IsProfilerSamplerActive();
 
   // The sampler used by the profiler and the sliding state window.
   static Ticker* ticker_;
 
   // When the statistical profile is active, profiler_
   // points to a Profiler, that handles collection
   // of samples.
   static Profiler* profiler_;
@@ skipping 31 matching lines @@
   void Trace(TickSample* sample);
  private:
 
   uintptr_t low_stack_bound_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_LOG_H_