src/os/solaris/vm/decoder_solaris.cpp

Fri, 16 Aug 2013 13:22:32 +0200

author
stefank
date
Fri, 16 Aug 2013 13:22:32 +0200
changeset 5578
4c84d351cca9
parent 4153
b9a9ed0f8eeb
child 6876
710a3c8b516e
permissions
-rw-r--r--

8007074: SIGSEGV at ParMarkBitMap::verify_clear()
Summary: Replace the broken large pages implementation on Linux. New flag: -XX:+UseTransparentHugePages - Linux specific flag to turn on transparent huge page hinting with madvise(..., MAP_HUGETLB). Changed behavior: -XX:+UseLargePages - tries to use -XX:+UseTransparentHugePages before trying other large pages implementations (on Linux). Changed behavior: -XX:+UseHugeTLBFS - Use upfront allocation of Large Pages instead of using the broken implementation to dynamically committing large pages. Changed behavior: -XX:LargePageSizeInBytes - Turned off the ability to use this flag on Linux and provides warning to user if set to a value different than the OS chosen large page size. Changed behavior: Setting no large page size - Now defaults to use -XX:UseTransparentHugePages if the OS supports it. Previously, -XX:+UseHugeTLBFS was chosen if the OS was configured to use large pages.
Reviewed-by: tschatzl, dcubed, brutisso

zgu@2364 1 /*
mikael@4153 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
zgu@2364 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
zgu@2364 4 *
zgu@2364 5 * This code is free software; you can redistribute it and/or modify it
zgu@2364 6 * under the terms of the GNU General Public License version 2 only, as
zgu@2364 7 * published by the Free Software Foundation.
zgu@2364 8 *
zgu@2364 9 * This code is distributed in the hope that it will be useful, but WITHOUT
zgu@2364 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
zgu@2364 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
zgu@2364 12 * version 2 for more details (a copy is included in the LICENSE file that
zgu@2364 13 * accompanied this code).
zgu@2364 14 *
zgu@2364 15 * You should have received a copy of the GNU General Public License version
zgu@2364 16 * 2 along with this work; if not, write to the Free Software Foundation,
zgu@2364 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
zgu@2364 18 *
zgu@2364 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
zgu@2364 20 * or visit www.oracle.com if you need additional information or have any
zgu@2364 21 * questions.
zgu@2364 22 *
zgu@2364 23 */
zgu@2364 24
zgu@3430 25 #include "utilities/decoder_elf.hpp"
zgu@2364 26
zgu@2364 27 #include <demangle.h>
zgu@2364 28
zgu@3430 29 bool ElfDecoder::demangle(const char* symbol, char *buf, int buflen) {
zgu@2364 30 return !cplus_demangle(symbol, buf, (size_t)buflen);
zgu@2364 31 }
zgu@3430 32

mercurial