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Java example source code file (copyFailedInfo.hpp)

This example Java source code file (copyFailedInfo.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

cheapobj, copyfailedinfo, copyfailedinfo\:\:register_copy_failure, copyfailedinfo\:\:reset, evacuationfailedinfo, null, osthread, promotionfailedinfo, share_vm_gc_implementation_shared_copyfailedinfo_hpp, the, thread\:\:current

The copyFailedInfo.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_GC_IMPLEMENTATION_SHARED_COPYFAILEDINFO_HPP
#define SHARE_VM_GC_IMPLEMENTATION_SHARED_COPYFAILEDINFO_HPP

#include "runtime/thread.hpp"
#include "utilities/globalDefinitions.hpp"

class CopyFailedInfo : public CHeapObj<mtGC> {
  size_t    _first_size;
  size_t    _smallest_size;
  size_t    _total_size;
  uint      _count;

 public:
  CopyFailedInfo() : _first_size(0), _smallest_size(0), _total_size(0), _count(0) {}

  virtual void register_copy_failure(size_t size) {
    if (_first_size == 0) {
      _first_size = size;
      _smallest_size = size;
    } else if (size < _smallest_size) {
      _smallest_size = size;
    }
    _total_size += size;
    _count++;
  }

  virtual void reset() {
    _first_size = 0;
    _smallest_size = 0;
    _total_size = 0;
    _count = 0;
  }

  bool has_failed() const { return _count != 0; }
  size_t first_size() const { return _first_size; }
  size_t smallest_size() const { return _smallest_size; }
  size_t total_size() const { return _total_size; }
  uint failed_count() const { return _count; }
};

class PromotionFailedInfo : public CopyFailedInfo {
  OSThread* _thread;

 public:
  PromotionFailedInfo() : CopyFailedInfo(), _thread(NULL) {}

  void register_copy_failure(size_t size) {
    CopyFailedInfo::register_copy_failure(size);
    if (_thread == NULL) {
      _thread = Thread::current()->osthread();
    } else {
      assert(_thread == Thread::current()->osthread(), "The PromotionFailedInfo should be thread local.");
    }
  }

  void reset() {
    CopyFailedInfo::reset();
    _thread = NULL;
  }

  OSThread* thread() const { return _thread; }
};

class EvacuationFailedInfo : public CopyFailedInfo {};

#endif /* SHARE_VM_GC_IMPLEMENTATION_SHARED_COPYFAILEDINFO_HPP */

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