jdk8-mips64-public/hotspot: src/cpu/mips/vm/vm_version_ext

     1 /*

     2  * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.

     3  * Copyright (c) 2018, 2020, Loongson Technology. All rights reserved.

     4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     5  *

     6  * This code is free software; you can redistribute it and/or modify it

     7  * under the terms of the GNU General Public License version 2 only, as

     8  * published by the Free Software Foundation.

     9  *

    10  * This code is distributed in the hope that it will be useful, but WITHOUT

    11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    13  * version 2 for more details (a copy is included in the LICENSE file that

    14  * accompanied this code).

    15  *

    16  * You should have received a copy of the GNU General Public License version

    17  * 2 along with this work; if not, write to the Free Software Foundation,

    18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    19  *

    20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    21  * or visit www.oracle.com if you need additional information or have any

    22  * questions.

    23  *

    24  */

    26 #include "memory/allocation.inline.hpp"

    27 #include "vm_version_ext_mips.hpp"

    29 // VM_Version_Ext statics

    30 int VM_Version_Ext::_no_of_threads = 0;

    31 int VM_Version_Ext::_no_of_cores = 0;

    32 int VM_Version_Ext::_no_of_sockets = 0;

    33 bool VM_Version_Ext::_initialized = false;

    34 char VM_Version_Ext::_cpu_name[CPU_TYPE_DESC_BUF_SIZE] = {0};

    35 char VM_Version_Ext::_cpu_desc[CPU_DETAILED_DESC_BUF_SIZE] = {0};

    37 void VM_Version_Ext::initialize_cpu_information(void) {

    38   // do nothing if cpu info has been initialized

    39   if (_initialized) {

    40     return;

    41   }

    43   int core_id = -1;

    44   int chip_id = -1;

    45   int len = 0;

    46   char* src_string = NULL;

    48   _no_of_cores  = os::processor_count();

    49   _no_of_threads = _no_of_cores;

    50   _no_of_sockets = _no_of_cores;

    51   if (is_loongson())

    52     snprintf(_cpu_name, CPU_TYPE_DESC_BUF_SIZE - 1, "Loongson");

    53   else

    54     snprintf(_cpu_name, CPU_TYPE_DESC_BUF_SIZE - 1, "MIPS");

    55   snprintf(_cpu_desc, CPU_DETAILED_DESC_BUF_SIZE, "%s", cpu_features());

    56   _initialized = true;

    57 }

    59 int VM_Version_Ext::number_of_threads(void) {

    60   initialize_cpu_information();

    61   return _no_of_threads;

    62 }

    64 int VM_Version_Ext::number_of_cores(void) {

    65   initialize_cpu_information();

    66   return _no_of_cores;

    67 }

    69 int VM_Version_Ext::number_of_sockets(void) {

    70   initialize_cpu_information();

    71   return _no_of_sockets;

    72 }

    74 const char* VM_Version_Ext::cpu_name(void) {

    75   initialize_cpu_information();

    76   char* tmp = NEW_C_HEAP_ARRAY_RETURN_NULL(char, CPU_TYPE_DESC_BUF_SIZE, mtTracing);

    77   if (NULL == tmp) {

    78     return NULL;

    79   }

    80   strncpy(tmp, _cpu_name, CPU_TYPE_DESC_BUF_SIZE);

    81   return tmp;

    82 }

    84 const char* VM_Version_Ext::cpu_description(void) {

    85   initialize_cpu_information();

    86   char* tmp = NEW_C_HEAP_ARRAY_RETURN_NULL(char, CPU_DETAILED_DESC_BUF_SIZE, mtTracing);

    87   if (NULL == tmp) {

    88     return NULL;

    89   }

    90   strncpy(tmp, _cpu_desc, CPU_DETAILED_DESC_BUF_SIZE);

    91   return tmp;

    92 }

src/cpu/mips/vm/vm_version_ext_mips.cpp@0672fc1cf811