1 /*
   2  * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright 2012, 2013 SAP AG. All rights reserved.
   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.
  23  *
  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) \
  33                                                                                     \
  34   /* If UseLargePages == true allow or deny usage of 16M pages. 16M pages are  */   \
  35   /* a scarce resource and there may be situations where we do not want the VM */   \
  36   /* to run with 16M pages. (Will fall back to 64K pages).                     */   \
  37   product_pd(bool, Use16MPages,                                                     \
  38           "Use 16M pages if available.")                                            \
  39                                                                                     \
  40   /*  use optimized addresses for the polling page, */                              \
  41   /* e.g. map it to a special 32-bit address.       */                              \
  42   product_pd(bool, OptimizePollingPageLocation,                                     \
  43           "Optimize the location of the polling page used for Safepoints")          \
  44                                                                                     \
  45   product_pd(intx, AttachListenerTimeout,                                           \
  46           "Timeout in ms the attach listener waits for a request")                  \
  47                                                                                     \
  48 
  49 // Per default, do not allow 16M pages. 16M pages have to be switched on specifically.
  50 define_pd_global(bool, Use16MPages, false);
  51 define_pd_global(bool, OptimizePollingPageLocation, true);
  52 define_pd_global(intx, AttachListenerTimeout, 1000);
  53 
  54 //
  55 // Defines Aix-specific default values. The flags are available on all
  56 // platforms, but they may have different default values on other platforms.
  57 //
  58 define_pd_global(bool, UseLargePages, true);
  59 define_pd_global(bool, UseLargePagesIndividualAllocation, false);
  60 define_pd_global(bool, UseOSErrorReporting, false);
  61 define_pd_global(bool, UseThreadPriorities, true) ;
  62 
  63 #endif // OS_AIX_VM_GLOBALS_AIX_HPP