src/hotspot/share/utilities/concurrentHashTable.hpp

rev 52316 : 8185525: Add JFR event for DictionarySizes
Summary: Added TableStatistics event
Reviewed-by: egahlin, coleenp

*** 23,32 ****
--- 23,34 ----
   */
  
  #ifndef SHARE_UTILITIES_CONCURRENT_HASH_TABLE_HPP
  #define SHARE_UTILITIES_CONCURRENT_HASH_TABLE_HPP
  
+ #include "utilities/tableStatistics.hpp"
+ 
  // A mostly concurrent-hash-table where the read-side is wait-free, inserts are
  // CAS and deletes mutual exclude each other on per bucket-basis. VALUE is the
  // type kept inside each Node and CONFIG contains hash and allocation methods.
  // A CALLBACK_FUNC and LOOKUP_FUNC needs to be provided for get and insert.
  
*** 371,380 ****
--- 373,383 ----
    ConcurrentHashTable(size_t log2size = DEFAULT_START_SIZE_LOG2,
                        size_t log2size_limit = DEFAULT_MAX_SIZE_LOG2,
                        size_t grow_hint = DEFAULT_GROW_HINT);
  
    ~ConcurrentHashTable();
+   TableRateStatistics _stats_rate;
  
    size_t get_size_log2(Thread* thread);
    size_t get_node_size() const { return sizeof(Node); }
    bool is_max_size_reached() { return _size_limit_reached; }
  
*** 476,485 ****
--- 479,497 ----
    // Destroying items matching EVALUATE_FUNC, before destroying items
    // DELETE_FUNC is called, when the resize lock is successfully obtained.
    template <typename EVALUATE_FUNC, typename DELETE_FUNC>
    void bulk_delete(Thread* thread, EVALUATE_FUNC& eval_f, DELETE_FUNC& del_f);
  
+   // Calcuate statistics. Item sizes are calculated with VALUE_SIZE_FUNC.
+   template <typename VALUE_SIZE_FUNC>
+   TableStatistics statistics_calculate(Thread* thread, VALUE_SIZE_FUNC& vs_f);
+ 
+   // Gets statistics if available, if not return old one. Item sizes are calculated with
+   // VALUE_SIZE_FUNC.
+   template <typename VALUE_SIZE_FUNC>
+   TableStatistics statistics_get(Thread* thread, VALUE_SIZE_FUNC& vs_f, TableStatistics old);
+ 
    // Writes statistics to the outputStream. Item sizes are calculated with
    // VALUE_SIZE_FUNC.
    template <typename VALUE_SIZE_FUNC>
    void statistics_to(Thread* thread, VALUE_SIZE_FUNC& vs_f, outputStream* st,
                       const char* table_name);