1 /*
   2  * Copyright (c) 2017, 2019, Red Hat, Inc. 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_GC_SHENANDOAH_SHENANDOAHSTRDEDUPQUEUE_INLINE_HPP
  26 #define SHARE_GC_SHENANDOAH_SHENANDOAHSTRDEDUPQUEUE_INLINE_HPP
  27 
  28 #include "gc/shenandoah/shenandoahStrDedupQueue.hpp"
  29 
  30 template <uint buffer_size>
  31 ShenandoahOopBuffer<buffer_size>::ShenandoahOopBuffer() :
  32   _index(0), _next(NULL) {
  33 }
  34 
  35 template <uint buffer_size>
  36 bool ShenandoahOopBuffer<buffer_size>::is_full() const {
  37   return _index >= buffer_size;
  38 }
  39 
  40 template <uint buffer_size>
  41 bool ShenandoahOopBuffer<buffer_size>::is_empty() const {
  42   return _index == 0;
  43 }
  44 
  45 template <uint buffer_size>
  46 uint ShenandoahOopBuffer<buffer_size>::size() const {
  47   return _index;
  48 }
  49 
  50 template <uint buffer_size>
  51 void ShenandoahOopBuffer<buffer_size>::push(oop obj) {
  52   assert(!is_full(),  "Buffer is full");
  53   _buf[_index ++] = obj;
  54 }
  55 
  56 template <uint buffer_size>
  57 oop ShenandoahOopBuffer<buffer_size>::pop() {
  58   assert(!is_empty(), "Buffer is empty");
  59   return _buf[--_index];
  60 }
  61 
  62 template <uint buffer_size>
  63 void ShenandoahOopBuffer<buffer_size>::set_next(ShenandoahOopBuffer<buffer_size>* next) {
  64   _next = next;
  65 }
  66 
  67 template <uint buffer_size>
  68 ShenandoahOopBuffer<buffer_size>* ShenandoahOopBuffer<buffer_size>::next() const {
  69   return _next;
  70 }
  71 
  72 template <uint buffer_size>
  73 void ShenandoahOopBuffer<buffer_size>::reset() {
  74   _index = 0;
  75   _next = NULL;
  76 }
  77 
  78 template <uint buffer_size>
  79 void ShenandoahOopBuffer<buffer_size>::unlink_or_oops_do(StringDedupUnlinkOrOopsDoClosure* cl) {
  80   for (uint index = 0; index < size(); index ++) {
  81     oop* obj_addr = &_buf[index];
  82     if (*obj_addr != NULL) {
  83       if (cl->is_alive(*obj_addr)) {
  84         cl->keep_alive(obj_addr);
  85       } else {
  86         *obj_addr = NULL;
  87       }
  88     }
  89   }
  90 }
  91 
  92 template <uint buffer_size>
  93 void ShenandoahOopBuffer<buffer_size>::oops_do(OopClosure* cl) {
  94   for (uint index = 0; index < size(); index ++) {
  95     cl->do_oop(&_buf[index]);
  96   }
  97 }
  98 
  99 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHSTRDEDUPQUEUE_INLINE_HPP