globals_aix.hpp revision 9173:3f28db271235 
1/*
2 * Copyright (c) 2005, 2015, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2012, 2015 SAP AG. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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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
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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24 */
25
26#ifndef OS_AIX_VM_GLOBALS_AIX_HPP
27#define OS_AIX_VM_GLOBALS_AIX_HPP
28
29//
30// Defines Aix specific flags. They are not available on other platforms.
31//
32#define RUNTIME_OS_FLAGS(develop, develop_pd, product, product_pd, diagnostic, notproduct, range, constraint) \
33                                                                                    \
34  /* Use 64K pages for virtual memory (shmat). */                                   \
35  product(bool, Use64KPages, true,                                                  \
36          "Use 64K pages if available.")                                            \
37                                                                                    \
38  /* If UseLargePages == true allow or deny usage of 16M pages. 16M pages are  */   \
39  /* a scarce resource and there may be situations where we do not want the VM */   \
40  /* to run with 16M pages. (Will fall back to 64K pages).                     */   \
41  product_pd(bool, Use16MPages,                                                     \
42             "Use 16M pages if available.")                                         \
43                                                                                    \
44  /*  use optimized addresses for the polling page, */                              \
45  /* e.g. map it to a special 32-bit address.       */                              \
46  product_pd(bool, OptimizePollingPageLocation,                                     \
47             "Optimize the location of the polling page used for Safepoints")       \
48                                                                                    \
49  product_pd(intx, AttachListenerTimeout,                                           \
50             "Timeout in ms the attach listener waits for a request")               \
51             range(0, 2147483)                                                      \
52                                                                                    \
53
54// Per default, do not allow 16M pages. 16M pages have to be switched on specifically.
55define_pd_global(bool, Use16MPages, false);
56define_pd_global(bool, OptimizePollingPageLocation, true);
57define_pd_global(intx, AttachListenerTimeout, 1000);
58
59//
60// Defines Aix-specific default values. The flags are available on all
61// platforms, but they may have different default values on other platforms.
62//
63define_pd_global(bool, UseLargePages, false);
64define_pd_global(bool, UseLargePagesIndividualAllocation, false);
65define_pd_global(bool, UseOSErrorReporting, false);
66define_pd_global(bool, UseThreadPriorities, true) ;
67
68#endif // OS_AIX_VM_GLOBALS_AIX_HPP
69