elfStringTable.hpp revision 3718:b9a9ed0f8eeb
1/* 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25#ifndef SHARE_VM_UTILITIES_ELF_STRING_TABLE_HPP 26#define SHARE_VM_UTILITIES_ELF_STRING_TABLE_HPP 27 28#if !defined(_WINDOWS) && !defined(__APPLE__) 29 30#include "memory/allocation.hpp" 31#include "utilities/decoder.hpp" 32#include "utilities/elfFile.hpp" 33 34 35// The string table represents a string table section in an elf file. 36// Whenever there is enough memory, it will load whole string table as 37// one blob. Otherwise, it will load string from file when requested. 38class ElfStringTable: CHeapObj<mtInternal> { 39 friend class ElfFile; 40 public: 41 ElfStringTable(FILE* file, Elf_Shdr shdr, int index); 42 ~ElfStringTable(); 43 44 // section index 45 int index() { return m_index; }; 46 47 // get string at specified offset 48 bool string_at(int offset, char* buf, int buflen); 49 50 // get status code 51 NullDecoder::decoder_status get_status() { return m_status; }; 52 53 protected: 54 ElfStringTable* m_next; 55 56 // section index 57 int m_index; 58 59 // holds complete string table if can 60 // allocate enough memory 61 const char* m_table; 62 63 // file contains string table 64 FILE* m_file; 65 66 // section header 67 Elf_Shdr m_shdr; 68 69 // error code 70 NullDecoder::decoder_status m_status; 71}; 72 73#endif // _WINDOWS and _APPLE 74 75#endif // SHARE_VM_UTILITIES_ELF_STRING_TABLE_HPP 76