1 /*
   2  * Copyright (c) 2019, 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 #ifndef SHARE_GC_G1_G1THREADLOCALDATA_HPP
  25 #define SHARE_GC_G1_G1THREADLOCALDATA_HPP
  26 
  27 #include "gc/g1/g1BarrierSet.hpp"
  28 #include "gc/g1/g1DirtyCardQueue.hpp"
  29 #include "gc/shared/satbMarkQueue.hpp"
  30 #include "runtime/thread.hpp"
  31 #include "utilities/debug.hpp"
  32 #include "utilities/sizes.hpp"
  33 
  34 class G1ThreadLocalData {
  35 private:
  36   SATBMarkQueue _satb_mark_queue;
  37   G1DirtyCardQueue _dirty_card_queue;
  38 
  39   G1ThreadLocalData() :
  40       _satb_mark_queue(&G1BarrierSet::satb_mark_queue_set()),
  41       _dirty_card_queue(&G1BarrierSet::dirty_card_queue_set()) {}
  42 
  43   static G1ThreadLocalData* data(Thread* thread) {
  44     assert(UseG1GC, "Sanity");
  45     return thread->gc_data<G1ThreadLocalData>();
  46   }
  47 
  48   static ByteSize satb_mark_queue_offset() {
  49     return Thread::gc_data_offset() + byte_offset_of(G1ThreadLocalData, _satb_mark_queue);
  50   }
  51 
  52   static ByteSize dirty_card_queue_offset() {
  53     return Thread::gc_data_offset() + byte_offset_of(G1ThreadLocalData, _dirty_card_queue);
  54   }
  55 
  56 public:
  57   static void create(Thread* thread) {
  58     new (data(thread)) G1ThreadLocalData();
  59   }
  60 
  61   static void destroy(Thread* thread) {
  62     data(thread)->~G1ThreadLocalData();
  63   }
  64 
  65   static SATBMarkQueue& satb_mark_queue(Thread* thread) {
  66     return data(thread)->_satb_mark_queue;
  67   }
  68 
  69   static G1DirtyCardQueue& dirty_card_queue(Thread* thread) {
  70     return data(thread)->_dirty_card_queue;
  71   }
  72 
  73   static ByteSize satb_mark_queue_active_offset() {
  74     return satb_mark_queue_offset() + SATBMarkQueue::byte_offset_of_active();
  75   }
  76 
  77   static ByteSize satb_mark_queue_index_offset() {
  78     return satb_mark_queue_offset() + SATBMarkQueue::byte_offset_of_index();
  79   }
  80 
  81   static ByteSize satb_mark_queue_buffer_offset() {
  82     return satb_mark_queue_offset() + SATBMarkQueue::byte_offset_of_buf();
  83   }
  84 
  85   static ByteSize dirty_card_queue_index_offset() {
  86     return dirty_card_queue_offset() + G1DirtyCardQueue::byte_offset_of_index();
  87   }
  88 
  89   static ByteSize dirty_card_queue_buffer_offset() {
  90     return dirty_card_queue_offset() + G1DirtyCardQueue::byte_offset_of_buf();
  91   }
  92 };
  93 
  94 #endif // SHARE_GC_G1_G1THREADLOCALDATA_HPP