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

src/v8-counters.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 14 matching lines @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #ifndef V8_V8_COUNTERS_H_
 #define V8_V8_COUNTERS_H_
 
 #include "counters.h"
 
 namespace v8 { namespace internal {
 
-#define STATS_RATE_LIST(SR)                                             \
-  SR(gc_compactor, V8.GCCompactor) /* GC Compactor time */              \
-  SR(gc_scavenger, V8.GCScavenger) /* GC Scavenger time */              \
-  SR(gc_context, V8.GCContext)     /* GC context cleanup time */        \
-  SR(compile, V8.Compile)          /* Compile time*/                    \
-  SR(compile_eval, V8.CompileEval) /* Eval compile time */              \
-  SR(compile_lazy, V8.CompileLazy) /* Lazy compile time */              \
-  SR(parse, V8.Parse)              /* Parse time */                     \
-  SR(parse_lazy, V8.ParseLazy)     /* Lazy parse time */                \
-  SR(pre_parse, V8.PreParse)       /* Pre-parse time */
+#define HISTOGRAM_TIMER_LIST(HT)                                 \
+  HT(gc_compactor, V8.GCCompactor) /* GC Compactor time */       \
+  HT(gc_scavenger, V8.GCScavenger) /* GC Scavenger time */       \
+  HT(gc_context, V8.GCContext)     /* GC context cleanup time */ \
+  HT(compile, V8.Compile)          /* Compile time*/             \
+  HT(compile_eval, V8.CompileEval) /* Eval compile time */       \
+  HT(compile_lazy, V8.CompileLazy) /* Lazy compile time */       \
+  HT(parse, V8.Parse)              /* Parse time */              \
+  HT(parse_lazy, V8.ParseLazy)     /* Lazy parse time */         \
+  HT(pre_parse, V8.PreParse)       /* Pre-parse time */
 
 // WARNING: STATS_COUNTER_LIST_* is a very large macro that is causing MSVC
 // Intellisense to crash.  It was broken into two macros (each of length 40
 // lines) rather than one macro (of length about 80 lines) to work around
 // this problem.  Please avoid using recursive macros of this length when
 // possible.
 #define STATS_COUNTER_LIST_1(SC)                                 \
   /* Global Handle Count*/                                       \
   SC(global_handles, V8.GlobalHandles)                           \
   /* Mallocs from PCRE */                                        \
@@ skipping 66 matching lines @@
   SC(enum_cache_hits, V8.EnumCacheHits)                             \
   SC(enum_cache_misses, V8.EnumCacheMisses)                         \
   SC(reloc_info_count, V8.RelocInfoCount)                           \
   SC(reloc_info_size, V8.RelocInfoSize)                             \
   SC(zone_segment_bytes, V8.ZoneSegmentBytes)
 
 
 // This file contains all the v8 counters that are in use.
 class Counters : AllStatic {
  public:
-#define SR(name, caption) \
-  static StatsRate name;
-  STATS_RATE_LIST(SR)
-#undef SR
+#define HT(name, caption) \
+  static HistogramTimer name;
+  HISTOGRAM_TIMER_LIST(HT)
+#undef HT
 
 #define SC(name, caption) \
   static StatsCounter name;
   STATS_COUNTER_LIST_1(SC)
   STATS_COUNTER_LIST_2(SC)
 #undef SC
 
   enum Id {
 #define RATE_ID(name, caption) k_##name,
-    STATS_RATE_LIST(RATE_ID)
+    HISTOGRAM_TIMER_LIST(RATE_ID)
 #undef RATE_ID
 #define COUNTER_ID(name, caption) k_##name,
   STATS_COUNTER_LIST_1(COUNTER_ID)
   STATS_COUNTER_LIST_2(COUNTER_ID)
 #undef COUNTER_ID
 #define COUNTER_ID(name) k_##name,
   STATE_TAG_LIST(COUNTER_ID)
 #undef COUNTER_ID
     stats_counter_count
   };
 
   // Sliding state window counters.
   static StatsCounter state_counters[];
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_COUNTERS_H_