- Added ability to call histograms from within v8...

include/v8.h

 // Copyright 2007-2008 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 821 matching lines @@
 
   /**
    * Creates a new external string using the data defined in the given
    * resource. The resource is deleted when the external string is no
    * longer live on V8's heap. The caller of this function should not
    * delete or modify the resource. Neither should the underlying buffer be
    * deallocated or modified except through the destructor of the
    * external string resource.
    */
   static Local<String> NewExternal(ExternalStringResource* resource);
-  
+
   /**
    * Associate an external string resource with this string by transforming it
    * in place so that existing references to this string in the JavaScript heap
    * will use the external string resource. The external string resource's
    * character contents needs to be equivalent to this string.
    * Returns true if the string has been changed to be an external string.
    * The string is not modified if the operation fails.
    */
   bool MakeExternal(ExternalStringResource* resource);
 
   /**
    * Creates a new external string using the ascii data defined in the given
    * resource. The resource is deleted when the external string is no
    * longer live on V8's heap. The caller of this function should not
    * delete or modify the resource. Neither should the underlying buffer be
    * deallocated or modified except through the destructor of the
    * external string resource.
    */
   static Local<String> NewExternal(ExternalAsciiStringResource* resource);
-  
+
   /**
    * Associate an external string resource with this string by transforming it
    * in place so that existing references to this string in the JavaScript heap
    * will use the external string resource. The external string resource's
    * character contents needs to be equivalent to this string.
    * Returns true if the string has been changed to be an external string.
    * The string is not modified if the operation fails.
    */
   bool MakeExternal(ExternalAsciiStringResource* resource);
 
@@ skipping 936 matching lines @@
   static Local<Value> SyntaxError(Handle<String> message);
   static Local<Value> TypeError(Handle<String> message);
   static Local<Value> Error(Handle<String> message);
 };
 
 
 // --- C o u n t e r s  C a l l b a c k s ---
 
 typedef int* (*CounterLookupCallback)(const char* name);
 
+typedef void* (*CreateHistogramCallback)(const char* name,
+                                         int min,
+                                         int max,
+                                         size_t buckets);
+
+typedef void (*AddHistogramSampleCallback)(void* histogram, int sample);
+
 // --- F a i l e d A c c e s s C h e c k C a l l b a c k ---
 typedef void (*FailedAccessCheckCallback)(Local<Object> target,
                                           AccessType type,
                                           Local<Value> data);
 
 // --- G a r b a g e C o l l e c t i o n  C a l l b a c k s
 
 /**
  * Applications can register a callback function which is called
  * before and after a major garbage collection.  Allocations are not
@@ skipping 70 matching lines @@
   /** Get the version string. */
   static const char* GetVersion();
 
   /**
    * Enables the host application to provide a mechanism for recording
    * statistics counters.
    */
   static void SetCounterFunction(CounterLookupCallback);
 
   /**
+   * Enables the host application to provide a mechanism for recording
+   * histograms. The CreateHistogram function returns a
+   * histogram which will later be passed to the AddHistogramSample
+   * function.
+   */
+  static void SetCreateHistogramFunction(CreateHistogramCallback);
+  static void SetAddHistogramSampleFunction(AddHistogramSampleCallback);
+
+  /**
    * Enables the computation of a sliding window of states. The sliding
    * window information is recorded in statistics counters.
    */
   static void EnableSlidingStateWindow();
 
   /** Callback function for reporting failed access checks.*/
   static void SetFailedAccessCheckCallbackFunction(FailedAccessCheckCallback);
 
   /**
    * Enables the host application to receive a notification before a
@@ skipping 538 matching lines @@
 
 }  // namespace v8
 
 
 #undef EXPORT
 #undef EXPORT_INLINE
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_