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 "memory/allocation.hpp"
26 #include "memory/allocation.inline.hpp"
27 #include "runtime/os.inline.hpp"
28 #include "vm_version_ext_arm.hpp"
29
30 // VM_Version_Ext statics
31 int VM_Version_Ext::_no_of_threads = 0;
32 int VM_Version_Ext::_no_of_cores = 0;
33 int VM_Version_Ext::_no_of_sockets = 0;
34 bool VM_Version_Ext::_initialized = false;
35 char VM_Version_Ext::_cpu_name[CPU_TYPE_DESC_BUF_SIZE] = {0};
36 char VM_Version_Ext::_cpu_desc[CPU_DETAILED_DESC_BUF_SIZE] = {0};
37
initialize_cpu_information(void)38 void VM_Version_Ext::initialize_cpu_information(void) {
39 // do nothing if cpu info has been initialized
40 if (_initialized) {
41 return;
42 }
43
44 int core_id = -1;
45 int chip_id = -1;
46 int len = 0;
47 char* src_string = NULL;
48
49 _no_of_cores = os::processor_count();
50 _no_of_threads = _no_of_cores;
51 _no_of_sockets = _no_of_cores;
52 #ifdef AARCH64
53 snprintf(_cpu_name, CPU_TYPE_DESC_BUF_SIZE - 1, "AArch64");
54 #else
55 snprintf(_cpu_name, CPU_TYPE_DESC_BUF_SIZE - 1, "ARM%d", _arm_arch);
56 #endif
57 snprintf(_cpu_desc, CPU_DETAILED_DESC_BUF_SIZE, "%s", _features_string);
58 _initialized = true;
59 }
60
number_of_threads(void)61 int VM_Version_Ext::number_of_threads(void) {
62 initialize_cpu_information();
63 return _no_of_threads;
64 }
65
number_of_cores(void)66 int VM_Version_Ext::number_of_cores(void) {
67 initialize_cpu_information();
68 return _no_of_cores;
69 }
70
number_of_sockets(void)71 int VM_Version_Ext::number_of_sockets(void) {
72 initialize_cpu_information();
73 return _no_of_sockets;
74 }
75
cpu_name(void)76 const char* VM_Version_Ext::cpu_name(void) {
77 initialize_cpu_information();
78 char* tmp = NEW_C_HEAP_ARRAY_RETURN_NULL(char, CPU_TYPE_DESC_BUF_SIZE, mtTracing);
79 if (NULL == tmp) {
80 return NULL;
81 }
82 strncpy(tmp, _cpu_name, CPU_TYPE_DESC_BUF_SIZE);
83 return tmp;
84 }
85
cpu_description(void)86 const char* VM_Version_Ext::cpu_description(void) {
87 initialize_cpu_information();
88 char* tmp = NEW_C_HEAP_ARRAY_RETURN_NULL(char, CPU_DETAILED_DESC_BUF_SIZE, mtTracing);
89 if (NULL == tmp) {
90 return NULL;
91 }
92 strncpy(tmp, _cpu_desc, CPU_DETAILED_DESC_BUF_SIZE);
93 return tmp;
94 }
95