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Java example source code file (memReporter.hpp)

This example Java source code file (memReporter.hpp) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

baselineoutputer, baselinereporter, baselinettyoutputer, include_nmt, membaseline, share_vm_services_mem_reporter_hpp, stackobj

The memReporter.hpp Java example source code

/*
 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */

#ifndef SHARE_VM_SERVICES_MEM_REPORTER_HPP
#define SHARE_VM_SERVICES_MEM_REPORTER_HPP

#include "runtime/mutexLocker.hpp"
#include "services/memBaseline.hpp"
#include "services/memTracker.hpp"
#include "utilities/ostream.hpp"
#include "utilities/macros.hpp"

#if INCLUDE_NMT

/*
 * MemBaselineReporter reports data to this outputer class,
 * ReportOutputer is responsible for format, store and redirect
 * the data to the final destination.
 */
class BaselineOutputer : public StackObj {
 public:
  // start to report memory usage in specified scale.
  // if report_diff = true, the reporter reports baseline comparison
  // information.

  virtual void start(size_t scale, bool report_diff = false) = 0;
  // Done reporting
  virtual void done() = 0;

  /* report baseline summary information */
  virtual void total_usage(size_t total_reserved,
                           size_t total_committed) = 0;
  virtual void num_of_classes(size_t classes) = 0;
  virtual void num_of_threads(size_t threads) = 0;

  virtual void thread_info(size_t stack_reserved_amt, size_t stack_committed_amt) = 0;

  /* report baseline summary comparison */
  virtual void diff_total_usage(size_t total_reserved,
                                size_t total_committed,
                                int reserved_diff,
                                int committed_diff) = 0;
  virtual void diff_num_of_classes(size_t classes, int diff) = 0;
  virtual void diff_num_of_threads(size_t threads, int diff) = 0;

  virtual void diff_thread_info(size_t stack_reserved, size_t stack_committed,
        int stack_reserved_diff, int stack_committed_diff) = 0;


  /*
   * memory summary by memory types.
   * for each memory type, following summaries are reported:
   *  - reserved amount, committed amount
   *  - malloc'd amount, malloc count
   *  - arena amount, arena count
   */

  // start reporting memory summary by memory type
  virtual void start_category_summary() = 0;

  virtual void category_summary(MEMFLAGS type, size_t reserved_amt,
                                size_t committed_amt,
                                size_t malloc_amt, size_t malloc_count,
                                size_t arena_amt, size_t arena_count) = 0;

  virtual void diff_category_summary(MEMFLAGS type, size_t cur_reserved_amt,
                                size_t cur_committed_amt,
                                size_t cur_malloc_amt, size_t cur_malloc_count,
                                size_t cur_arena_amt, size_t cur_arena_count,
                                int reserved_diff, int committed_diff, int malloc_diff,
                                int malloc_count_diff, int arena_diff,
                                int arena_count_diff) = 0;

  virtual void done_category_summary() = 0;

  virtual void start_virtual_memory_map() = 0;
  virtual void reserved_memory_region(MEMFLAGS type, address base, address end, size_t size, address pc) = 0;
  virtual void committed_memory_region(address base, address end, size_t size, address pc) = 0;
  virtual void done_virtual_memory_map() = 0;

  /*
   *  Report callsite information
   */
  virtual void start_callsite() = 0;
  virtual void malloc_callsite(address pc, size_t malloc_amt, size_t malloc_count) = 0;
  virtual void virtual_memory_callsite(address pc, size_t reserved_amt, size_t committed_amt) = 0;

  virtual void diff_malloc_callsite(address pc, size_t cur_malloc_amt, size_t cur_malloc_count,
              int malloc_diff, int malloc_count_diff) = 0;
  virtual void diff_virtual_memory_callsite(address pc, size_t cur_reserved_amt, size_t cur_committed_amt,
              int reserved_diff, int committed_diff) = 0;

  virtual void done_callsite() = 0;

  // return current scale in "KB", "MB" or "GB"
  static const char* memory_unit(size_t scale);
};

/*
 * This class reports processed data from a baseline or
 * the changes between the two baseline.
 */
class BaselineReporter : public StackObj {
 private:
  BaselineOutputer&  _outputer;
  size_t             _scale;

 public:
  // construct a reporter that reports memory usage
  // in specified scale
  BaselineReporter(BaselineOutputer& outputer, size_t scale = K):
    _outputer(outputer) {
    _scale = scale;
  }
  virtual void report_baseline(const MemBaseline& baseline, bool summary_only = false);
  virtual void diff_baselines(const MemBaseline& cur, const MemBaseline& prev,
                              bool summary_only = false);

  void set_scale(size_t scale);
  size_t scale() const { return _scale; }

 private:
  void report_summaries(const MemBaseline& baseline);
  void report_virtual_memory_map(const MemBaseline& baseline);
  void report_callsites(const MemBaseline& baseline);

  void diff_summaries(const MemBaseline& cur, const MemBaseline& prev);
  void diff_callsites(const MemBaseline& cur, const MemBaseline& prev);

  // calculate memory size in current memory scale
  size_t amount_in_current_scale(size_t amt) const;
  // diff two unsigned values in current memory scale
  int    diff_in_current_scale(size_t value1, size_t value2) const;
  // diff two unsigned value
  int    diff(size_t value1, size_t value2) const;
};

/*
 * tty output implementation. Native memory tracking
 * DCmd uses this outputer.
 */
class BaselineTTYOutputer : public BaselineOutputer {
 private:
  size_t         _scale;

  size_t         _num_of_classes;
  size_t         _num_of_threads;
  size_t         _thread_stack_reserved;
  size_t         _thread_stack_committed;

  int            _num_of_classes_diff;
  int            _num_of_threads_diff;
  int            _thread_stack_reserved_diff;
  int            _thread_stack_committed_diff;

  outputStream*  _output;

 public:
  BaselineTTYOutputer(outputStream* st) {
    _scale = K;
    _num_of_classes = 0;
    _num_of_threads = 0;
    _thread_stack_reserved = 0;
    _thread_stack_committed = 0;
    _num_of_classes_diff = 0;
    _num_of_threads_diff = 0;
    _thread_stack_reserved_diff = 0;
    _thread_stack_committed_diff = 0;
    _output = st;
  }

  // begin reporting memory usage in specified scale
  void start(size_t scale, bool report_diff = false);
  // done reporting
  void done();

  // total memory usage
  void total_usage(size_t total_reserved,
                   size_t total_committed);
  // report total loaded classes
  void num_of_classes(size_t classes) {
    _num_of_classes = classes;
  }

  void num_of_threads(size_t threads) {
    _num_of_threads = threads;
  }

  void thread_info(size_t stack_reserved_amt, size_t stack_committed_amt) {
    _thread_stack_reserved = stack_reserved_amt;
    _thread_stack_committed = stack_committed_amt;
  }

  void diff_total_usage(size_t total_reserved,
                        size_t total_committed,
                        int reserved_diff,
                        int committed_diff);

  void diff_num_of_classes(size_t classes, int diff) {
    _num_of_classes = classes;
    _num_of_classes_diff = diff;
  }

  void diff_num_of_threads(size_t threads, int diff) {
    _num_of_threads = threads;
    _num_of_threads_diff = diff;
  }

  void diff_thread_info(size_t stack_reserved_amt, size_t stack_committed_amt,
               int stack_reserved_diff, int stack_committed_diff) {
    _thread_stack_reserved = stack_reserved_amt;
    _thread_stack_committed = stack_committed_amt;
    _thread_stack_reserved_diff = stack_reserved_diff;
    _thread_stack_committed_diff = stack_committed_diff;
  }

  /*
   * Report memory summary categoriuzed by memory types.
   * For each memory type, following summaries are reported:
   *  - reserved amount, committed amount
   *  - malloc-ed amount, malloc count
   *  - arena amount, arena count
   */
  // start reporting memory summary by memory type
  void start_category_summary();
  void category_summary(MEMFLAGS type, size_t reserved_amt, size_t committed_amt,
                               size_t malloc_amt, size_t malloc_count,
                               size_t arena_amt, size_t arena_count);

  void diff_category_summary(MEMFLAGS type, size_t cur_reserved_amt,
                          size_t cur_committed_amt,
                          size_t cur_malloc_amt, size_t cur_malloc_count,
                          size_t cur_arena_amt, size_t cur_arena_count,
                          int reserved_diff, int committed_diff, int malloc_diff,
                          int malloc_count_diff, int arena_diff,
                          int arena_count_diff);

  void done_category_summary();

  // virtual memory map
  void start_virtual_memory_map();
  void reserved_memory_region(MEMFLAGS type, address base, address end, size_t size, address pc);
  void committed_memory_region(address base, address end, size_t size, address pc);
  void done_virtual_memory_map();


  /*
   *  Report callsite information
   */
  void start_callsite();
  void malloc_callsite(address pc, size_t malloc_amt, size_t malloc_count);
  void virtual_memory_callsite(address pc, size_t reserved_amt, size_t committed_amt);

  void diff_malloc_callsite(address pc, size_t cur_malloc_amt, size_t cur_malloc_count,
              int malloc_diff, int malloc_count_diff);
  void diff_virtual_memory_callsite(address pc, size_t cur_reserved_amt, size_t cur_committed_amt,
              int reserved_diff, int committed_diff);

  void done_callsite();
};


#endif // INCLUDE_NMT

#endif // SHARE_VM_SERVICES_MEM_REPORTER_HPP

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