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 "vm_version_ext_ppc.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 
  38 // get cpu information.
  39 void VM_Version_Ext::initialize_cpu_information(void) {
  40   // do nothing if cpu info has been initialized
  41   if (_initialized) {
  42     return;
  43   }
  44 
  45   _no_of_cores  = os::processor_count();
  46   _no_of_threads = _no_of_cores;
  47   _no_of_sockets = _no_of_cores;
  48   snprintf(_cpu_name, CPU_TYPE_DESC_BUF_SIZE, "PowerPC POWER%lu", PowerArchitecturePPC64);
  49   snprintf(_cpu_desc, CPU_DETAILED_DESC_BUF_SIZE, "PPC %s", features_string());
  50   _initialized = true;
  51 }
  52 
  53 int VM_Version_Ext::number_of_threads(void) {
  54   initialize_cpu_information();
  55   return _no_of_threads;
  56 }
  57 
  58 int VM_Version_Ext::number_of_cores(void) {
  59   initialize_cpu_information();
  60   return _no_of_cores;
  61 }
  62 
  63 int VM_Version_Ext::number_of_sockets(void) {
  64   initialize_cpu_information();
  65   return _no_of_sockets;
  66 }
  67 
  68 const char* VM_Version_Ext::cpu_name(void) {
  69   initialize_cpu_information();
  70   char* tmp = NEW_C_HEAP_ARRAY_RETURN_NULL(char, CPU_TYPE_DESC_BUF_SIZE, mtTracing);
  71   if (NULL == tmp) {
  72     return NULL;
  73   }
  74   strncpy(tmp, _cpu_name, CPU_TYPE_DESC_BUF_SIZE);
  75   return tmp;
  76 }
  77 
  78 const char* VM_Version_Ext::cpu_description(void) {
  79   initialize_cpu_information();
  80   char* tmp = NEW_C_HEAP_ARRAY_RETURN_NULL(char, CPU_DETAILED_DESC_BUF_SIZE, mtTracing);
  81   if (NULL == tmp) {
  82     return NULL;
  83   }
  84   strncpy(tmp, _cpu_desc, CPU_DETAILED_DESC_BUF_SIZE);
  85   return tmp;
  86 }