Mercurial > hg > truffle
view src/share/vm/utilities/elfStringTable.hpp @ 8733:9def4075da6d
8008079: G1: Add nextObject routine to CMBitMapRO and replace nextWord
Summary: Update the task local finger to the start of the next object when marking aborts, in order to avoid the redundant scanning of all 0's when the marking task restarts, if otherwise updating to the next word. In addition, reuse the routine nextObject() in routine iterate().
Reviewed-by: johnc, ysr
Contributed-by: tamao <tao.mao@oracle.com>
author | tamao |
---|---|
date | Tue, 05 Mar 2013 15:36:56 -0800 |
parents | b9a9ed0f8eeb |
children | e7cbc95179c4 |
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/* * Copyright (c) 1997, 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 SHARE_VM_UTILITIES_ELF_STRING_TABLE_HPP #define SHARE_VM_UTILITIES_ELF_STRING_TABLE_HPP #if !defined(_WINDOWS) && !defined(__APPLE__) #include "memory/allocation.hpp" #include "utilities/decoder.hpp" #include "utilities/elfFile.hpp" // The string table represents a string table section in an elf file. // Whenever there is enough memory, it will load whole string table as // one blob. Otherwise, it will load string from file when requested. class ElfStringTable: CHeapObj<mtInternal> { friend class ElfFile; public: ElfStringTable(FILE* file, Elf_Shdr shdr, int index); ~ElfStringTable(); // section index int index() { return m_index; }; // get string at specified offset bool string_at(int offset, char* buf, int buflen); // get status code NullDecoder::decoder_status get_status() { return m_status; }; protected: ElfStringTable* m_next; // section index int m_index; // holds complete string table if can // allocate enough memory const char* m_table; // file contains string table FILE* m_file; // section header Elf_Shdr m_shdr; // error code NullDecoder::decoder_status m_status; }; #endif // _WINDOWS and _APPLE #endif // SHARE_VM_UTILITIES_ELF_STRING_TABLE_HPP