Add support for allowing an embedder to get the V8 profile timer event logs.

include/v8.h

 // Copyright 2012 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 3787 matching lines @@
 
 
 // --- Exceptions ---
 
 
 typedef void (*FatalErrorCallback)(const char* location, const char* message);
 
 
 typedef void (*MessageCallback)(Handle<Message> message, Handle<Value> error);
 
+// --- Tracing ---
+
+typedef void (*LogEventCallback)(const char* name, int event);
 
 /**
  * Create new error objects by calling the corresponding error object
  * constructor with the message.
  */
 class V8_EXPORT Exception {
  public:
   static Local<Value> RangeError(Handle<String> message);
   static Local<Value> ReferenceError(Handle<String> message);
   static Local<Value> SyntaxError(Handle<String> message);
@@ skipping 366 matching lines @@
    * Request garbage collection in this Isolate. It is only valid to call this
    * function if --expose_gc was specified.
    *
    * This should only be used for testing purposes and not to enforce a garbage
    * collection schedule. It has strong negative impact on the garbage
    * collection performance. Use IdleNotification() or LowMemoryNotification()
    * instead to influence the garbage collection schedule.
    */
   void RequestGarbageCollectionForTesting(GarbageCollectionType type);
 
+  /**
+   * Set the callback to invoke for logging event.
+   */
+  void SetEventLogger(LogEventCallback that);
+
  private:
   Isolate();
   Isolate(const Isolate&);
   ~Isolate();
   Isolate& operator=(const Isolate&);
   void* operator new(size_t size);
   void operator delete(void*, size_t);
 
   void SetObjectGroupId(internal::Object** object, UniqueId id);
   void SetReferenceFromGroup(UniqueId id, internal::Object** object);
@@ skipping 2251 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_