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

include/v8.h

Index: include/v8.h
===================================================================
--- include/v8.h	(revision 1503)
+++ include/v8.h	(working copy)
@@ -839,7 +839,7 @@
    * 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
@@ -859,7 +859,7 @@
    * 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
@@ -1816,6 +1816,13 @@
 
 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,
@@ -1906,6 +1913,15 @@
   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.
    */