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src/hotspot/cpu/aarch64/vm_version_ext_aarch64.cpp

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rev 60630 : 8248659: AArch64: Extend CPU Feature detection
Reviewed-by:
Contributed-by: mbeckwit, luhenry, burban


   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_aarch64.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 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;




   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 "precompiled.hpp"
  26 #include "memory/allocation.hpp"
  27 #include "memory/allocation.inline.hpp"
  28 #include "runtime/os.inline.hpp"
  29 #include "vm_version_ext_aarch64.hpp"
  30 
  31 // VM_Version_Ext statics
  32 int VM_Version_Ext::_no_of_threads = 0;
  33 int VM_Version_Ext::_no_of_cores = 0;
  34 int VM_Version_Ext::_no_of_sockets = 0;
  35 bool VM_Version_Ext::_initialized = false;
  36 char VM_Version_Ext::_cpu_name[CPU_TYPE_DESC_BUF_SIZE] = {0};
  37 char VM_Version_Ext::_cpu_desc[CPU_DETAILED_DESC_BUF_SIZE] = {0};
  38 
  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   int core_id = -1;


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