| /* |
| * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "memory/allocation.hpp" |
| #include "memory/allocation.inline.hpp" |
| #include "runtime/os.inline.hpp" |
| #include "vm_version_ext_aarch64.hpp" |
| |
| // VM_Version_Ext statics |
| int VM_Version_Ext::_no_of_threads = 0; |
| int VM_Version_Ext::_no_of_cores = 0; |
| int VM_Version_Ext::_no_of_sockets = 0; |
| bool VM_Version_Ext::_initialized = false; |
| char VM_Version_Ext::_cpu_name[CPU_TYPE_DESC_BUF_SIZE] = {0}; |
| char VM_Version_Ext::_cpu_desc[CPU_DETAILED_DESC_BUF_SIZE] = {0}; |
| |
| void VM_Version_Ext::initialize_cpu_information(void) { |
| // do nothing if cpu info has been initialized |
| if (_initialized) { |
| return; |
| } |
| |
| int core_id = -1; |
| int chip_id = -1; |
| int len = 0; |
| char* src_string = NULL; |
| |
| _no_of_cores = os::processor_count(); |
| _no_of_threads = _no_of_cores; |
| _no_of_sockets = _no_of_cores; |
| snprintf(_cpu_name, CPU_TYPE_DESC_BUF_SIZE - 1, "AArch64"); |
| snprintf(_cpu_desc, CPU_DETAILED_DESC_BUF_SIZE, "%s", _features_string); |
| _initialized = true; |
| } |
| |
| int VM_Version_Ext::number_of_threads(void) { |
| initialize_cpu_information(); |
| return _no_of_threads; |
| } |
| |
| int VM_Version_Ext::number_of_cores(void) { |
| initialize_cpu_information(); |
| return _no_of_cores; |
| } |
| |
| int VM_Version_Ext::number_of_sockets(void) { |
| initialize_cpu_information(); |
| return _no_of_sockets; |
| } |
| |
| const char* VM_Version_Ext::cpu_name(void) { |
| initialize_cpu_information(); |
| char* tmp = NEW_C_HEAP_ARRAY_RETURN_NULL(char, CPU_TYPE_DESC_BUF_SIZE, mtTracing); |
| if (NULL == tmp) { |
| return NULL; |
| } |
| strncpy(tmp, _cpu_name, CPU_TYPE_DESC_BUF_SIZE); |
| return tmp; |
| } |
| |
| const char* VM_Version_Ext::cpu_description(void) { |
| initialize_cpu_information(); |
| char* tmp = NEW_C_HEAP_ARRAY_RETURN_NULL(char, CPU_DETAILED_DESC_BUF_SIZE, mtTracing); |
| if (NULL == tmp) { |
| return NULL; |
| } |
| strncpy(tmp, _cpu_desc, CPU_DETAILED_DESC_BUF_SIZE); |
| return tmp; |
| } |