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_ZUTILS_INLINE_HPP
  25 #define SHARE_GC_Z_ZUTILS_INLINE_HPP
  26 
  27 #include "gc/z/zOop.inline.hpp"
  28 #include "gc/z/zUtils.hpp"
  29 #include "oops/oop.inline.hpp"
  30 #include "utilities/align.hpp"
  31 #include "utilities/copy.hpp"
  32 #include "utilities/debug.hpp"
  33 #include "utilities/globalDefinitions.hpp"
  34 
  35 inline size_t ZUtils::round_up_power_of_2(size_t value) {
  36   assert(value != 0, "Invalid value");
  37 
  38   if (is_power_of_2(value)) {
  39     return value;
  40   }
  41 
  42   return (size_t)1 << (log2_intptr(value) + 1);
  43 }
  44 
  45 inline size_t ZUtils::round_down_power_of_2(size_t value) {
  46   assert(value != 0, "Invalid value");
  47   return (size_t)1 << log2_intptr(value);
  48 }
  49 
  50 inline size_t ZUtils::bytes_to_words(size_t size_in_bytes) {
  51   assert(is_aligned(size_in_bytes, BytesPerWord), "Size not word aligned");
  52   return size_in_bytes >> LogBytesPerWord;
  53 }
  54 
  55 inline size_t ZUtils::words_to_bytes(size_t size_in_words) {
  56   return size_in_words << LogBytesPerWord;
  57 }
  58 
  59 inline size_t ZUtils::object_size(uintptr_t addr) {
  60   return words_to_bytes(ZOop::from_address(addr)->size());
  61 }
  62 
  63 inline void ZUtils::object_copy(uintptr_t from, uintptr_t to, size_t size) {
  64   Copy::aligned_disjoint_words((HeapWord*)from, (HeapWord*)to, bytes_to_words(size));
  65 }
  66 
  67 #endif // SHARE_GC_Z_ZUTILS_INLINE_HPP