src/hotspot/share/gc/shared/workerDataArray.hpp
author stefank
Thu, 22 Feb 2018 18:36:32 +0100
changeset 49048 4e8c86b75428
parent 47216 71c04702a3d5
child 52897 495c05ee2a9a
permissions -rw-r--r--
8198525: Move _size_policy out of GenCollectorPolicy into GenCollectedHeap Reviewed-by: pliden, sjohanss
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/*
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 * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#ifndef SHARE_VM_GC_SHARED_WORKERDATAARRAY_HPP
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#define SHARE_VM_GC_SHARED_WORKERDATAARRAY_HPP
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#include "memory/allocation.hpp"
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#include "utilities/debug.hpp"
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class outputStream;
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template <class T>
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class WorkerDataArray  : public CHeapObj<mtGC> {
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  friend class WDAPrinter;
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public:
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  static const uint MaxThreadWorkItems = 3;
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private:
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  T*          _data;
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  uint        _length;
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  const char* _title;
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  WorkerDataArray<size_t>* _thread_work_items[MaxThreadWorkItems];
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  WorkerDataArray(uint length, const char* title);
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  ~WorkerDataArray();
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  void link_thread_work_items(WorkerDataArray<size_t>* thread_work_items, uint index = 0);
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  void set_thread_work_item(uint worker_i, size_t value, uint index = 0);
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  void add_thread_work_item(uint worker_i, size_t value, uint index = 0);
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  WorkerDataArray<size_t>* thread_work_items(uint index = 0) const {
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    assert(index < MaxThreadWorkItems, "Tried to access thread work item %u max %u", index, MaxThreadWorkItems);
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    return _thread_work_items[index];
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  }
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  static T uninitialized();
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  void set(uint worker_i, T value);
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  T get(uint worker_i) const;
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  void add(uint worker_i, T value);
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  // The sum() and average() methods below consider uninitialized slots to be 0.
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  double average() const;
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  T sum() const;
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  const char* title() const {
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    return _title;
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  }
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  void reset();
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  void set_all(T value);
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 private:
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  class WDAPrinter {
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  public:
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    static void summary(outputStream* out, double min, double avg, double max, double diff, double sum, bool print_sum);
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    static void summary(outputStream* out, size_t min, double avg, size_t max, size_t diff, size_t sum, bool print_sum);
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    static void details(const WorkerDataArray<double>* phase, outputStream* out);
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    static void details(const WorkerDataArray<size_t>* phase, outputStream* out);
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  };
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  void print_summary_on(outputStream* out, bool print_sum = true) const;
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  void print_details_on(outputStream* out) const;
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};
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#endif // SHARE_VM_GC_SHARED_WORKERDATAARRAY_HPP