Mercurial > hg > truffle

view src/os/linux/vm/globals_linux.hpp @ 12986:1b422ef5288a

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
8025728: Missing volatile specifier for field G1AllocRegion::_alloc_region Summary: The field G1AllocRegion::_alloc_region needs to be declared volatile as it is used with that intention. Otherwise the compiler may generate the code that reloads the value which might have changed in the meantime, leading to spurious crashes. Reviewed-by: iveresov, simonis, tschatzl Contributed-by: Axel Siebenborn <axel.siebenborn@sap.com>
author tschatzl
date Wed, 23 Oct 2013 10:23:06 +0200
parents 263f2c796d6c
children
line wrap: on
line source

/*
 * Copyright (c) 2005, 2013, 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_VM_GLOBALS_LINUX_HPP
#define OS_LINUX_VM_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, notproduct) \
  product(bool, UseOprofile, false,                                     \
        "enable support for Oprofile profiler")                         \
                                                                        \
  product(bool, UseLinuxPosixThreadCPUClocks, true,                     \
          "enable fast Linux Posix clocks where available")             \
/*  NB: The default value of UseLinuxPosixThreadCPUClocks may be        \
    overridden in Arguments::parse_each_vm_init_arg.  */                \
                                                                        \
  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")

//
// 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_VM_GLOBALS_LINUX_HPP