/*

 * Copyright (c) 2005, 2019, 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.

 *

 * 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.

 *

 */

#ifndef OS_LINUX_GLOBALS_LINUX_HPP

#define OS_LINUX_GLOBALS_LINUX_HPP

//

// Defines Linux specific flags. They are not available on other platforms.

//

#define RUNTIME_OS_FLAGS(develop, \

                         develop_pd, \

                         product, \

                         product_pd, \

                         diagnostic, \

                         diagnostic_pd, \

                         notproduct, \

                         range, \

                         constraint, \

                         writeable) \

                                                                        \

  product(bool, UseOprofile, false,                                     \

        "enable support for Oprofile profiler")                         \

                                                                        \

  /*  NB: The default value of UseLinuxPosixThreadCPUClocks may be   */ \

  /* overridden in Arguments::parse_each_vm_init_arg.                */ \

  product(bool, UseLinuxPosixThreadCPUClocks, true,                     \

          "enable fast Linux Posix clocks where available")             \

                                                                        \

  product(bool, UseHugeTLBFS, false,                                    \

          "Use MAP_HUGETLB for large pages")                            \

                                                                        \

  product(bool, UseTransparentHugePages, false,                         \

          "Use MADV_HUGEPAGE for large pages")                          \

                                                                        \

  product(bool, LoadExecStackDllInVMThread, true,                       \

          "Load DLLs with executable-stack attribute in the VM Thread") \

                                                                        \

  product(bool, UseSHM, false,                                          \

          "Use SYSV shared memory for large pages")                     \

                                                                        \

  product(bool, UseContainerSupport, true,                              \

          "Enable detection and runtime container configuration support") \

                                                                        \

  product(bool, PreferContainerQuotaForCPUCount, true,                  \

          "Calculate the container CPU availability based on the value" \

          " shares value, provided it is less than quota.")             \

                                                                        \

  diagnostic(bool, DumpPrivateMappingsInCore, true,                     \

          "If true, sets bit 2 of /proc/PID/coredump_filter, thus "     \

          "resulting in file-backed private mappings of the process to "\

          "be dumped into the corefile.")                               \

                                                                        \

  diagnostic(bool, DumpSharedMappingsInCore, true,                      \

          "If true, sets bit 3 of /proc/PID/coredump_filter, thus "     \

          "resulting in file-backed shared mappings of the process to " \

          "be dumped into the corefile.")                               \

                                                                        \

  diagnostic(bool, UseCpuAllocPath, false,                              \

             "Use CPU_ALLOC code path in os::active_processor_count ")

//

// Defines Linux-specific default values. The flags are available on all

// platforms, but they may have different default values on other platforms.

//

define_pd_global(bool, UseLargePages, false);

define_pd_global(bool, UseLargePagesIndividualAllocation, false);

define_pd_global(bool, UseOSErrorReporting, false);

define_pd_global(bool, UseThreadPriorities, true) ;

#endif // OS_LINUX_GLOBALS_LINUX_HPP