1/*
2 * Copyright (c) 2016, 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#include "gc/z/zNUMA.hpp"
25#include "logging/log.hpp"
26#include "runtime/os.hpp"
27
28bool ZNUMA::_enabled;
29
30void ZNUMA::initialize() {
31 initialize_platform();
32
33 log_info(gc, init)("NUMA Support: %s", to_string());
34 if (is_enabled()) {
35 log_info(gc, init)("NUMA Nodes: %u", count());
36 }
37}
38
39bool ZNUMA::is_enabled() {
40 return _enabled;
41}
42
43void ZNUMA::memory_interleave(uintptr_t addr, size_t size) {
44 if (!_enabled) {
45 // NUMA support not enabled
46 return;
47 }
48
49 os::numa_make_global((char*)addr, size);
50}
51
52const char* ZNUMA::to_string() {
53 return _enabled ? "Enabled" : "Disabled";
54}
55