1 /*

     2  * Copyright (c) 1998, 2007, 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.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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

    23  * 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 }