1 /*
   2  * Copyright (c) 2012, 2013, 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_IMPLEMENTATION_SHARED_COPYFAILEDINFO_HPP
  26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_COPYFAILEDINFO_HPP
  27 
  28 #include "runtime/thread.hpp"
  29 #include "utilities/globalDefinitions.hpp"
  30 
  31 class CopyFailedInfo : public CHeapObj<mtGC> {
  32   size_t    _first_size;
  33   size_t    _smallest_size;
  34   size_t    _total_size;
  35   uint      _count;
  36 
  37  public:
  38   CopyFailedInfo() : _first_size(0), _smallest_size(0), _total_size(0), _count(0) {}
  39 
  40   virtual void register_copy_failure(size_t size) {
  41     if (_first_size == 0) {
  42       _first_size = size;
  43       _smallest_size = size;
  44     } else if (size < _smallest_size) {
  45       _smallest_size = size;
  46     }
  47     _total_size += size;
  48     _count++;
  49   }
  50 
  51   virtual void reset() {
  52     _first_size = 0;
  53     _smallest_size = 0;
  54     _total_size = 0;
  55     _count = 0;
  56   }
  57 
  58   bool has_failed() const { return _count != 0; }
  59   size_t first_size() const { return _first_size; }
  60   size_t smallest_size() const { return _smallest_size; }
  61   size_t total_size() const { return _total_size; }
  62   uint failed_count() const { return _count; }
  63 };
  64 
  65 class PromotionFailedInfo : public CopyFailedInfo {
  66   OSThread* _thread;
  67 
  68  public:
  69   PromotionFailedInfo() : CopyFailedInfo(), _thread(NULL) {}
  70 
  71   void register_copy_failure(size_t size) {
  72     CopyFailedInfo::register_copy_failure(size);
  73     if (_thread == NULL) {
  74       _thread = Thread::current()->osthread();
  75     } else {
  76       assert(_thread == Thread::current()->osthread(), "The PromotionFailedInfo should be thread local.");
  77     }
  78   }
  79 
  80   void reset() {
  81     CopyFailedInfo::reset();
  82     _thread = NULL;
  83   }
  84 
  85   OSThread* thread() const { return _thread; }
  86 };
  87 
  88 class EvacuationFailedInfo : public CopyFailedInfo {};
  89 
  90 #endif /* SHARE_VM_GC_IMPLEMENTATION_SHARED_COPYFAILEDINFO_HPP */