1 /*
 2  * Copyright (c) 2015, 2024, 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  *
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20  * or visit www.oracle.com if you need additional information or have any
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22  */
23 
24 #ifndef SHARE_GC_Z_ZUTILS_INLINE_HPP
25 #define SHARE_GC_Z_ZUTILS_INLINE_HPP
26 
27 #include "gc/z/zUtils.hpp"
28 
29 #include "gc/z/zAddress.inline.hpp"
30 #include "oops/oop.inline.hpp"
31 #include "runtime/os.hpp"
32 #include "utilities/align.hpp"
33 #include "utilities/copy.hpp"
34 #include "utilities/debug.hpp"
35 #include "utilities/globalDefinitions.hpp"
36 
37 inline uintptr_t ZUtils::alloc_aligned_unfreeable(size_t alignment, size_t size) {
38   const size_t padded_size = size + (alignment - 1);
39   void* const addr = os::malloc(padded_size, mtGC);
40   void* const aligned_addr = align_up(addr, alignment);
41 
42   memset(aligned_addr, 0, size);
43 
44   // Since free expects pointers returned by malloc, aligned_addr cannot be
45   // freed since it is most likely not the same as addr after alignment.
46   return (uintptr_t)aligned_addr;
47 }
48 
49 inline size_t ZUtils::bytes_to_words(size_t size_in_bytes) {
50   assert(is_aligned(size_in_bytes, BytesPerWord), "Size not word aligned");
51   return size_in_bytes >> LogBytesPerWord;
52 }
53 
54 inline size_t ZUtils::words_to_bytes(size_t size_in_words) {
55   return size_in_words << LogBytesPerWord;
56 }
57 
58 inline size_t ZUtils::object_size(zaddress addr) {
59   return words_to_bytes(to_oop(addr)->size());
60 }
61 
62 inline void ZUtils::object_copy_disjoint(zaddress from, zaddress to, size_t size) {
63   Copy::aligned_disjoint_words((HeapWord*)untype(from), (HeapWord*)untype(to), bytes_to_words(size));
64 }
65 
66 inline void ZUtils::object_copy_conjoint(zaddress from, zaddress to, size_t size) {
67   if (from != to) {
68     Copy::aligned_conjoint_words((HeapWord*)untype(from), (HeapWord*)untype(to), bytes_to_words(size));
69   }
70 }
71 
72 #endif // SHARE_GC_Z_ZUTILS_INLINE_HPP