1 /*
   2  * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_GC_SHARED_WORKERDATAARRAY_HPP
  26 #define SHARE_GC_SHARED_WORKERDATAARRAY_HPP
  27 
  28 #include "memory/allocation.hpp"
  29 #include "utilities/debug.hpp"
  30 
  31 class outputStream;
  32 
  33 template <class T>
  34 class WorkerDataArray  : public CHeapObj<mtGC> {
  35   friend class WDAPrinter;
  36 public:
  37   static const uint MaxThreadWorkItems = 5;
  38 private:
  39   T*          _data;
  40   uint        _length;
  41   const char* _title;
  42 
  43   WorkerDataArray<size_t>* _thread_work_items[MaxThreadWorkItems];
  44 
  45  public:
  46   WorkerDataArray(uint length, const char* title);
  47   ~WorkerDataArray();
  48 
  49   void link_thread_work_items(WorkerDataArray<size_t>* thread_work_items, uint index = 0);
  50   void set_thread_work_item(uint worker_i, size_t value, uint index = 0);
  51   void add_thread_work_item(uint worker_i, size_t value, uint index = 0);
  52   void set_or_add_thread_work_item(uint worker_i, size_t value, uint index = 0);
  53   size_t get_thread_work_item(uint worker_i, uint index = 0);
  54 
  55   WorkerDataArray<size_t>* thread_work_items(uint index = 0) const {
  56     assert(index < MaxThreadWorkItems, "Tried to access thread work item %u max %u", index, MaxThreadWorkItems);
  57     return _thread_work_items[index];
  58   }
  59 
  60   static T uninitialized();
  61 
  62   void set(uint worker_i, T value);
  63   T get(uint worker_i) const;
  64 
  65   void add(uint worker_i, T value);
  66 
  67   // The sum() and average() methods below consider uninitialized slots to be 0.
  68   double average() const;
  69   T sum() const;
  70 
  71   const char* title() const {
  72     return _title;
  73   }
  74 
  75   void reset();
  76   void set_all(T value);
  77 
  78 
  79  private:
  80   class WDAPrinter {
  81   public:
  82     static void summary(outputStream* out, double min, double avg, double max, double diff, double sum, bool print_sum);
  83     static void summary(outputStream* out, size_t min, double avg, size_t max, size_t diff, size_t sum, bool print_sum);
  84 
  85     static void details(const WorkerDataArray<double>* phase, outputStream* out);
  86     static void details(const WorkerDataArray<size_t>* phase, outputStream* out);
  87   };
  88 
  89  public:
  90   void print_summary_on(outputStream* out, bool print_sum = true) const;
  91   void print_details_on(outputStream* out) const;
  92 };
  93 
  94 #endif // SHARE_GC_SHARED_WORKERDATAARRAY_HPP