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 }