jdk/src/java.base/unix/native/libjli/ergo.c
changeset 41966 bac52fa6e617
parent 41965 015dea372cb3
child 41967 58a7153b17c5
--- a/jdk/src/java.base/unix/native/libjli/ergo.c	Wed Nov 09 14:24:41 2016 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,113 +0,0 @@
-/*
- * Copyright (c) 1998, 2011, Oracle and/or its affiliates. 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.  Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-/* This file houses the common methods for VM ergonomics the platforms
- * are split into ergo_sparc and ergo_x86, and they could be split more
- * in the future if required. The following comments are not entirely
- * true after bifurcation of the platform specific files.
- */
-
-/*
- * The following methods (down to ServerClassMachine()) answer
- * the question about whether a machine is a "server-class"
- * machine.  A server-class machine is loosely defined as one
- * with 2 or more processors and 2 gigabytes or more physical
- * memory.  The definition of a processor is a physical package,
- * not a hyperthreaded chip masquerading as a multi-processor.
- * The definition of memory is also somewhat fuzzy, since x86
- * machines seem not to report all the memory in their DIMMs, we
- * think because of memory mapping of graphics cards, etc.
- *
- * This code is somewhat more confused with #ifdef's than we'd
- * like because this file is used by both Solaris and Linux
- * platforms, and so needs to be parameterized for SPARC and
- * i586 hardware.  The other Linux platforms (amd64 and ia64)
- * don't even ask this question, because they only come with
- * server JVMs.
- */
-
-#include "ergo.h"
-
-/* Dispatch to the platform-specific definition of "server-class" */
-jboolean
-ServerClassMachine(void) {
-  jboolean result;
-  switch(GetErgoPolicy()) {
-    case NEVER_SERVER_CLASS:
-      return JNI_FALSE;
-    case ALWAYS_SERVER_CLASS:
-      return JNI_TRUE;
-    default:
-      result = ServerClassMachineImpl();
-      JLI_TraceLauncher("ServerClassMachine: returns default value of %s\n",
-           (result == JNI_TRUE ? "true" : "false"));
-      return result;
-  }
-}
-
-#ifdef USE_GENERIC_ERGO
-/* 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;
-}
-
-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;
-}
-#endif
-
-/* Compute physical memory by asking the OS */
-uint64_t
-physical_memory(void) {
-  const uint64_t pages     = (uint64_t) sysconf(_SC_PHYS_PAGES);
-  const uint64_t page_size = (uint64_t) sysconf(_SC_PAGESIZE);
-  const uint64_t result    = pages * page_size;
-# define UINT64_FORMAT "%" PRIu64
-
-  JLI_TraceLauncher("pages: " UINT64_FORMAT
-          "  page_size: " UINT64_FORMAT
-          "  physical memory: " UINT64_FORMAT " (%.3fGB)\n",
-           pages, page_size, result, result / (double) GB);
-  return result;
-}