AllocationProfiler: introduce allocation_profiler flag in V8 api.

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 4569 matching lines @@
    * \param entry_hook a function that will be invoked on entry to every
    *   V8-generated function.
    * \returns true on success on supported platforms, false on failure.
    * \note Setting an entry hook can only be done very early in an isolates
    *   lifetime, and once set, the entry hook cannot be revoked.
    */
   static bool SetFunctionEntryHook(Isolate* isolate,
                                    FunctionEntryHook entry_hook);
 
   /**
+   * Allows the host application to enable allocation profiler.
+   *
+   * \param isolate the isolate to operate on.
+   * \returns true on success, false on failure.
+   * \note Enabling allocation profiler can only be done very early in
+   * an isolates lifetime, and once set, it cannot be revoked.
+   * It affects isolate initalization time.
+   */
+  static bool EnableAllocationProfiler(Isolate* isolate);
+
+  /**
+   * Allows the host application to get the status of allocation profiler.
+   *
+   * \param isolate the isolate to operate on.
+   * \returns true if profiler has been enabled and false otherwise.
+   */  static bool IsAllocationProfilerEnabled(Isolate* isolate);

[alph, 2013/11/05 13:55:20]

nit: a new line

+
+  /**
    * Allows the host application to provide the address of a function that is
    * notified each time code is added, moved or removed.
    *
    * \param options options for the JIT code event handler.
    * \param event_handler the JIT code event handler, which will be invoked
    *     each time code is added, moved or removed.
    * \note \p event_handler won't get notified of existent code.
    * \note since code removal notifications are not currently issued, the
    *     \p event_handler may get notifications of code that overlaps earlier
    *     code notifications. This happens when code areas are reused, and the
@@ skipping 1899 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_