comparison src/hotspot/share/gc/z/zUtils.hpp @ 50525:767cdb97f103

8204210: Implementation: JEP 333: ZGC: A Scalable Low-Latency Garbage Collector (Experimental) Reviewed-by: pliden, stefank, eosterlund, ehelin, sjohanss, rbackman, coleenp, ihse, jgeorge, lmesnik, rkennke Contributed-by: per.liden@oracle.com, stefan.karlsson@oracle.com, erik.osterlund@oracle.com, mikael.gerdin@oracle.com, kim.barrett@oracle.com, nils.eliasson@oracle.com, rickard.backman@oracle.com, rwestrel@redhat.com, coleen.phillimore@oracle.com, robbin.ehn@oracle.com, gerard.ziemski@oracle.com, hugh.wilkinson@intel.com, sandhya.viswanathan@intel.com, bill.npo.wheeler@intel.com, vinay.k.awasthi@intel.com, yasuenag@gmail.com
author pliden
date Tue, 12 Jun 2018 17:40:28 +0200
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children 2217b2fc29ea
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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_HPP
25 #define SHARE_GC_Z_ZUTILS_HPP
26
27 #include "memory/allocation.hpp"
28
29 class ZUtils : public AllStatic {
30 public:
31 // Allocation
32 static uintptr_t alloc_aligned(size_t alignment, size_t size);
33
34 // Power of two
35 static size_t round_up_power_of_2(size_t value);
36 static size_t round_down_power_of_2(size_t value);
37
38 // Size convertion
39 static size_t bytes_to_words(size_t size_in_words);
40 static size_t words_to_bytes(size_t size_in_words);
41
42 // Object
43 static size_t object_size(uintptr_t addr);
44 static void object_copy(uintptr_t from, uintptr_t to, size_t size);
45
46 // Filler
47 static void insert_filler_object(uintptr_t addr, size_t size);
48 };
49
50 #endif // SHARE_GC_Z_ZUTILS_HPP