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

src/heap.cc

 // 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 282 matching lines @@
   CollectGarbage(0, OLD_POINTER_SPACE);
 }
 
 
 void Heap::CollectAllGarbageIfContextDisposed() {
   // If the garbage collector interface is exposed through the global
   // gc() function, we avoid being clever about forcing GCs when
   // contexts are disposed and leave it to the embedder to make
   // informed decisions about when to force a collection.
   if (!FLAG_expose_gc && context_disposed_pending_) {
-    StatsRateScope scope(&Counters::gc_context);
+    HistogramTimerScope scope(&Counters::gc_context);
     CollectAllGarbage();
   }
   context_disposed_pending_ = false;
 }
 
 
 void Heap::NotifyContextDisposed() {
   context_disposed_pending_ = true;
 }
 
@@ skipping 14 matching lines @@
   { GCTracer tracer;
     GarbageCollectionPrologue();
     // The GC count was incremented in the prologue.  Tell the tracer about
     // it.
     tracer.set_gc_count(gc_count_);
 
     GarbageCollector collector = SelectGarbageCollector(space);
     // Tell the tracer which collector we've selected.
     tracer.set_collector(collector);
 
-    StatsRate* rate = (collector == SCAVENGER)
+    HistogramTimer* rate = (collector == SCAVENGER)
         ? &Counters::gc_scavenger
         : &Counters::gc_compactor;
     rate->Start();
     PerformGarbageCollection(space, collector, &tracer);
     rate->Stop();
 
     GarbageCollectionEpilogue();
   }
 
 
@@ skipping 2984 matching lines @@
 #ifdef DEBUG
 bool Heap::GarbageCollectionGreedyCheck() {
   ASSERT(FLAG_gc_greedy);
   if (Bootstrapper::IsActive()) return true;
   if (disallow_allocation_failure()) return true;
   return CollectGarbage(0, NEW_SPACE);
 }
 #endif
 
 } }  // namespace v8::internal