1 /*
   2  * Copyright (c) 2015, 2017, 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_Z_ZMEMORY_INLINE_HPP
  25 #define SHARE_GC_Z_ZMEMORY_INLINE_HPP
  26 
  27 #include "gc/z/zMemory.hpp"
  28 #include "utilities/debug.hpp"
  29 
  30 inline ZMemory::ZMemory(uintptr_t start, size_t size) :
  31     _start(start),
  32     _end(start + size) {}
  33 
  34 inline uintptr_t ZMemory::start() const {
  35   return _start;
  36 }
  37 
  38 inline uintptr_t ZMemory::end() const {
  39   return _end;
  40 }
  41 
  42 inline size_t ZMemory::size() const {
  43   return end() - start();
  44 }
  45 
  46 inline void ZMemory::shrink_from_front(size_t size) {
  47   assert(this->size() > size, "Too small");
  48   _start += size;
  49 }
  50 
  51 inline void ZMemory::shrink_from_back(size_t size) {
  52   assert(this->size() > size, "Too small");
  53   _end -= size;
  54 }
  55 
  56 inline void ZMemory::grow_from_front(size_t size) {
  57   assert(start() >= size, "Too big");
  58   _start -= size;
  59 }
  60 
  61 inline void ZMemory::grow_from_back(size_t size) {
  62   _end += size;
  63 }
  64 
  65 #endif // SHARE_GC_Z_ZMEMORY_INLINE_HPP