Mercurial > hg > graal-jvmci-8
view src/os/bsd/vm/decoder_machO.hpp @ 12110:4c84d351cca9
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
author | stefank |
---|---|
date | Fri, 16 Aug 2013 13:22:32 +0200 |
parents | 3b01d0321dfa |
children |
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/* * Copyright (c) 2011, 2012, 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_BSD_VM_DECODER_MACHO_HPP #define OS_BSD_VM_DECODER_MACHO_HPP #ifdef __APPLE__ #include "utilities/decoder.hpp" // Just a placehold for now, a real implementation should derive // from AbstractDecoder class MachODecoder : public AbstractDecoder { public: MachODecoder() { } ~MachODecoder() { } virtual bool can_decode_C_frame_in_vm() const { return true; } virtual bool demangle(const char* symbol, char* buf, int buflen); virtual bool decode(address pc, char* buf, int buflen, int* offset, const void* base); virtual bool decode(address pc, char* buf, int buflen, int* offset, const char* module_path = NULL) { ShouldNotReachHere(); return false; } private: void * mach_find_command(struct mach_header_64 * mach_base, uint32_t command_wanted); char * mach_find_in_stringtable(char *strtab, uint32_t tablesize, int strx_wanted); }; #endif #endif // OS_BSD_VM_DECODER_MACHO_HPP