1 /*
   2  * Copyright 1998-2007 Sun Microsystems, Inc.  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.  Sun designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Sun in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  22  * CA 95054 USA or visit www.sun.com if you need additional information or
  23  * have any questions.
  24  */
  25 #include "ergo.h"
  26 
  27 
  28 /* Methods for solaris-sparc and linux-sparc: these are easy. */
  29 
  30 /* Ask the OS how many processors there are. */
  31 static unsigned long
  32 physical_processors(void) {
  33   const unsigned long sys_processors = sysconf(_SC_NPROCESSORS_CONF);
  34 
  35   JLI_TraceLauncher("sysconf(_SC_NPROCESSORS_CONF): %lu\n", sys_processors);
  36   return sys_processors;
  37 }
  38 
  39 /* The sparc version of the "server-class" predicate. */
  40 jboolean
  41 ServerClassMachineImpl(void) {
  42   jboolean            result            = JNI_FALSE;
  43   /* How big is a server class machine? */
  44   const unsigned long server_processors = 2UL;
  45   const uint64_t      server_memory     = 2UL * GB;
  46   const uint64_t      actual_memory     = physical_memory();
  47 
  48   /* Is this a server class machine? */
  49   if (actual_memory >= server_memory) {
  50     const unsigned long actual_processors = physical_processors();
  51     if (actual_processors >= server_processors) {
  52       result = JNI_TRUE;
  53     }
  54   }
  55   JLI_TraceLauncher("unix_" LIBARCHNAME "_ServerClassMachine: %s\n",
  56            (result == JNI_TRUE ? "JNI_TRUE" : "JNI_FALSE"));
  57   return result;
  58 }