globals_zero.hpp revision 1788:3dc12ef8735e 
1/*
2 * Copyright (c) 2000, 2006, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2007, 2008, 2009, 2010 Red Hat, Inc.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
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24 */
25
26// Set the default values for platform dependent flags used by the
27// runtime system.  See globals.hpp for details of what they do.
28
29define_pd_global(bool,  ConvertSleepToYield,  true);
30define_pd_global(bool,  ShareVtableStubs,     true);
31define_pd_global(bool,  CountInterpCalls,     true);
32define_pd_global(bool,  NeedsDeoptSuspend,    false);
33
34define_pd_global(bool,  ImplicitNullChecks,   true);
35define_pd_global(bool,  UncommonNullCast,     true);
36
37define_pd_global(intx,  CodeEntryAlignment,   32);
38define_pd_global(intx,  OptoLoopAlignment,    16);
39define_pd_global(intx,  InlineFrequencyCount, 100);
40define_pd_global(intx,  PreInflateSpin,       10);
41
42define_pd_global(intx,  StackYellowPages,     2);
43define_pd_global(intx,  StackRedPages,        1);
44define_pd_global(intx,  StackShadowPages,     5 LP64_ONLY(+1) DEBUG_ONLY(+3));
45
46define_pd_global(bool,  RewriteBytecodes,     true);
47define_pd_global(bool,  RewriteFrequentPairs, true);
48
49define_pd_global(bool,  UseMembar,            false);
50