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Copy pathvm_version_ext_zero.cpp
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90 lines (80 loc) · 2.81 KB
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/*
* Copyright (c) 2013, 2021, 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.hpp"
#include "vm_version_ext_zero.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, "Zero VM");
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;
}