1 /*

     2  * Copyright (c) 2015, 2017, 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_VM_GC_SHARED_WORKERDATAARRAY_HPP

    26 #define SHARE_VM_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 = 3;

    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   WorkerDataArray<size_t>* thread_work_items(uint index = 0) const {

    53     assert(index < MaxThreadWorkItems, "Tried to access thread work item %u max %u", index, MaxThreadWorkItems);

    54     return _thread_work_items[index];

    55   }

    56 

    57   static T uninitialized();

    58 

    59   void set(uint worker_i, T value);

    60   T get(uint worker_i) const;

    61 

    62   void add(uint worker_i, T value);

    63 

    64   // The sum() and average() methods below consider uninitialized slots to be 0.

    65   double average() const;

    66   T sum() const;

    67 

    68   const char* title() const {

    69     return _title;

    70   }

    71 

    72   void reset();

    73   void set_all(T value);

    74 

    75 

    76  private:

    77   class WDAPrinter {

    78   public:

    79     static void summary(outputStream* out, double min, double avg, double max, double diff, double sum, bool print_sum);

    80     static void summary(outputStream* out, size_t min, double avg, size_t max, size_t diff, size_t sum, bool print_sum);

    81 

    82     static void details(const WorkerDataArray<double>* phase, outputStream* out);

    83     static void details(const WorkerDataArray<size_t>* phase, outputStream* out);

    84   };

    85 

    86  public:

    87   void print_summary_on(outputStream* out, bool print_sum = true) const;

    88   void print_details_on(outputStream* out) const;

    89 };

    90 

    91 #endif // SHARE_VM_GC_SHARED_WORKERDATAARRAY_HPP