[Isolates] StatsTable moved to Isolate....

src/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 17 matching lines @@
 #ifndef V8_COUNTERS_H_
 #define V8_COUNTERS_H_
 
 namespace v8 {
 namespace internal {
 
 // StatsCounters is an interface for plugging into external
 // counters for monitoring.  Counters can be looked up and
 // manipulated by name.
 
-class StatsTable : public AllStatic {
+class StatsTable {
  public:
   // Register an application-defined function where
   // counters can be looked up.
-  static void SetCounterFunction(CounterLookupCallback f) {
+  void SetCounterFunction(CounterLookupCallback f) {
     lookup_function_ = f;
   }
 
   // Register an application-defined function to create
   // a histogram for passing to the AddHistogramSample function
-  static void SetCreateHistogramFunction(CreateHistogramCallback f) {
+  void SetCreateHistogramFunction(CreateHistogramCallback f) {
     create_histogram_function_ = f;
   }
 
   // Register an application-defined function to add a sample
   // to a histogram created with CreateHistogram function
-  static void SetAddHistogramSampleFunction(AddHistogramSampleCallback f) {
+  void SetAddHistogramSampleFunction(AddHistogramSampleCallback f) {
     add_histogram_sample_function_ = f;
   }
 
-  static bool HasCounterFunction() {
+  bool HasCounterFunction() const {
     return lookup_function_ != NULL;
   }
 
   // Lookup the location of a counter by name.  If the lookup
   // is successful, returns a non-NULL pointer for writing the
   // value of the counter.  Each thread calling this function
   // may receive a different location to store it's counter.
   // The return value must not be cached and re-used across
   // threads, although a single thread is free to cache it.
-  static int* FindLocation(const char* name) {
+  int* FindLocation(const char* name) {
     if (!lookup_function_) return NULL;
     return lookup_function_(name);
   }
 
   // Create a histogram by name. If the create is successful,
   // returns a non-NULL pointer for use with AddHistogramSample
   // function. min and max define the expected minimum and maximum
   // sample values. buckets is the maximum number of buckets
   // that the samples will be grouped into.
-  static void* CreateHistogram(const char* name,
-                               int min,
-                               int max,
-                               size_t buckets) {
+  void* CreateHistogram(const char* name,
+                        int min,
+                        int max,
+                        size_t buckets) {
     if (!create_histogram_function_) return NULL;
     return create_histogram_function_(name, min, max, buckets);
   }
 
   // Add a sample to a histogram created with the CreateHistogram
   // function.
-  static void AddHistogramSample(void* histogram, int sample) {
+  void AddHistogramSample(void* histogram, int sample) {
     if (!add_histogram_sample_function_) return;
     return add_histogram_sample_function_(histogram, sample);
   }
 
  private:
-  static CounterLookupCallback lookup_function_;
-  static CreateHistogramCallback create_histogram_function_;
-  static AddHistogramSampleCallback add_histogram_sample_function_;
+  StatsTable();
+
+  CounterLookupCallback lookup_function_;
+  CreateHistogramCallback create_histogram_function_;
+  AddHistogramSampleCallback add_histogram_sample_function_;
+
+  friend class Isolate;
+
+  DISALLOW_COPY_AND_ASSIGN(StatsTable);
 };
 
 // StatsCounters are dynamically created values which can be tracked in
 // the StatsTable.  They are designed to be lightweight to create and
 // easy to use.
 //
 // Internally, a counter represents a value in a row of a StatsTable.
 // The row has a 32bit value for each process/thread in the table and also
 // a name (stored in the table metadata).  Since the storage location can be
 // thread-specific, this class cannot be shared across threads.
@@ skipping 49 matching lines @@
     ASSERT(loc != NULL);
     return loc;
   }
 
  protected:
   // Returns the cached address of this counter location.
   int* GetPtr() {
     if (lookup_done_)
       return ptr_;
     lookup_done_ = true;
-    ptr_ = StatsTable::FindLocation(name_);
+    ptr_ = FindLocationInStatsTable();
     return ptr_;
   }
+
+ private:
+  int* FindLocationInStatsTable() const;
 };
 
 // StatsCounterTimer t = { { L"t:foo", NULL, false }, 0, 0 };
 struct StatsCounterTimer {
   StatsCounter counter_;
 
   int64_t start_time_;
   int64_t stop_time_;
 
   // Start the timer.
@@ skipping 27 matching lines @@
   // Returns true if the timer is running.
   bool Running() {
     return (histogram_ != NULL) && (start_time_ != 0) && (stop_time_ == 0);
   }
 
  protected:
   // Returns the handle to the histogram.
   void* GetHistogram() {
     if (!lookup_done_) {
       lookup_done_ = true;
-      histogram_ = StatsTable::CreateHistogram(name_, 0, 10000, 50);
+      histogram_ = CreateHistogram();
     }
     return histogram_;
   }
+
+ private:
+  void* CreateHistogram() const;
 };
 
 // Helper class for scoping a HistogramTimer.
 class HistogramTimerScope BASE_EMBEDDED {
  public:
   explicit HistogramTimerScope(HistogramTimer* timer) :
   timer_(timer) {
     timer_->Start();
   }
   ~HistogramTimerScope() {
     timer_->Stop();
   }
  private:
   HistogramTimer* timer_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_COUNTERS_H_