1 /*
2 * Copyright (c) 2013, 2018, 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
25 #include "jvm.h"
26 #include "memory/allocation.hpp"
27 #include "memory/allocation.inline.hpp"
28 #include "runtime/vm_version.hpp"
29 #include "vm_version_ext_ppc.hpp"
30
31 // VM_Version_Ext statics
32 int VM_Version_Ext::_no_of_threads = 0;
33 int VM_Version_Ext::_no_of_cores = 0;
34 int VM_Version_Ext::_no_of_sockets = 0;
35 bool VM_Version_Ext::_initialized = false;
36 char VM_Version_Ext::_cpu_name[CPU_TYPE_DESC_BUF_SIZE] = {0};
37 char VM_Version_Ext::_cpu_desc[CPU_DETAILED_DESC_BUF_SIZE] = {0};
38
39 // get cpu information.
initialize_cpu_information(void)40 void VM_Version_Ext::initialize_cpu_information(void) {
41 // do nothing if cpu info has been initialized
42 if (_initialized) {
43 return;
44 }
45
46 _no_of_cores = os::processor_count();
47 _no_of_threads = _no_of_cores;
48 _no_of_sockets = _no_of_cores;
49 snprintf(_cpu_name, CPU_TYPE_DESC_BUF_SIZE, "PowerPC POWER%lu", PowerArchitecturePPC64);
50 snprintf(_cpu_desc, CPU_DETAILED_DESC_BUF_SIZE, "PPC %s", features_string());
51 _initialized = true;
52 }
53
number_of_threads(void)54 int VM_Version_Ext::number_of_threads(void) {
55 initialize_cpu_information();
56 return _no_of_threads;
57 }
58
number_of_cores(void)59 int VM_Version_Ext::number_of_cores(void) {
60 initialize_cpu_information();
61 return _no_of_cores;
62 }
63
number_of_sockets(void)64 int VM_Version_Ext::number_of_sockets(void) {
65 initialize_cpu_information();
66 return _no_of_sockets;
67 }
68
cpu_name(void)69 const char* VM_Version_Ext::cpu_name(void) {
70 initialize_cpu_information();
71 char* tmp = NEW_C_HEAP_ARRAY_RETURN_NULL(char, CPU_TYPE_DESC_BUF_SIZE, mtTracing);
72 if (NULL == tmp) {
73 return NULL;
74 }
75 strncpy(tmp, _cpu_name, CPU_TYPE_DESC_BUF_SIZE);
76 return tmp;
77 }
78
cpu_description(void)79 const char* VM_Version_Ext::cpu_description(void) {
80 initialize_cpu_information();
81 char* tmp = NEW_C_HEAP_ARRAY_RETURN_NULL(char, CPU_DETAILED_DESC_BUF_SIZE, mtTracing);
82 if (NULL == tmp) {
83 return NULL;
84 }
85 strncpy(tmp, _cpu_desc, CPU_DETAILED_DESC_BUF_SIZE);
86 return tmp;
87 }
88