--- old/src/hotspot/share/runtime/threadHeapSampler.hpp	2018-03-19 14:01:17.057601983 -0700
+++ new/src/hotspot/share/runtime/threadHeapSampler.hpp	2018-03-19 14:01:16.753602974 -0700
@@ -36,10 +36,11 @@
 
   void pick_next_sample(size_t diff = 0);
   static int _enabled;
-  static int _monitoring_rate;
+  static int _sampling_rate;
 
   static void enable() { OrderAccess::release_store(&_enabled, 1); }
   static void disable() { OrderAccess::release_store(&_enabled, 0); }
+  void init_log_table();
 
  public:
   ThreadHeapSampler() : _bytes_until_sample(0), _thread(NULL) {
@@ -47,6 +48,7 @@
     if (_rnd == 0) {
       _rnd = 1;
     }
+    init_log_table();
   }
 
   void set_thread(Thread* t)                     { _thread = t; }
@@ -57,7 +59,7 @@
   void check_for_sampling(HeapWord* obj, size_t size_in_bytes, size_t bytes_allocated_before = 0);
 
   static int enabled() { return OrderAccess::load_acquire(&_enabled); }
-  static void set_tlab_heap_sampling(int monitoring_rate);
+  static void set_tlab_heap_sampling(int sampling_rate);
 };
 
 #endif // SHARE_RUNTIME_THREADHEAPSAMPLER_HPP