| J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 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 | } |