view src/solaris/bin/ergo_zero.c @ 1772:e2de121c27c4

6891677: java/build integrate zero assembler JDK changes Summary: Build changes for the Zero assembler port Reviewed-by: ohair, tbell
author gbenson
date Thu, 15 Oct 2009 13:27:59 +0100
parents
children 00cd9dc3c2b5
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/*
 * Copyright 1998-2007 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */
#include "ergo.h"


/* Methods for solaris-sparc and linux-sparc: these are easy. */

/* Ask the OS how many processors there are. */
static unsigned long
physical_processors(void) {
  const unsigned long sys_processors = sysconf(_SC_NPROCESSORS_CONF);

  JLI_TraceLauncher("sysconf(_SC_NPROCESSORS_CONF): %lu\n", sys_processors);
  return sys_processors;
}

/* The sparc version of the "server-class" predicate. */
jboolean
ServerClassMachineImpl(void) {
  jboolean            result            = JNI_FALSE;
  /* How big is a server class machine? */
  const unsigned long server_processors = 2UL;
  const uint64_t      server_memory     = 2UL * GB;
  const uint64_t      actual_memory     = physical_memory();

  /* Is this a server class machine? */
  if (actual_memory >= server_memory) {
    const unsigned long actual_processors = physical_processors();
    if (actual_processors >= server_processors) {
      result = JNI_TRUE;
    }
  }
  JLI_TraceLauncher("unix_" LIBARCHNAME "_ServerClassMachine: %s\n",
           (result == JNI_TRUE ? "JNI_TRUE" : "JNI_FALSE"));
  return result;
}