Mercurial > hg > truffle
diff src/share/vm/utilities/elfStringTable.hpp @ 2022:2d4762ec74af
7003748: Decode C stack frames when symbols are presented (PhoneHome project)
Summary: Implemented in-process C native stack frame decoding when symbols are available.
Reviewed-by: coleenp, never
author | zgu |
---|---|
date | Sat, 11 Dec 2010 13:20:56 -0500 |
parents | |
children | f08d439fab8c |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/utilities/elfStringTable.hpp Sat Dec 11 13:20:56 2010 -0500 @@ -0,0 +1,82 @@ +/* + * Copyright (c) 1997, 2010, 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 __ELF_STRING_TABLE_HPP +#define __ELF_STRING_TABLE_HPP + +#ifndef _WINDOWS + +#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. + +#define MAX_SYMBOL_LEN 256 + +class ElfStringTable: CHeapObj { + 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 + const char* string_at(int offset); + + // get status code + Decoder::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; + + // buffer for reading individual string + char m_symbol[MAX_SYMBOL_LEN]; + + // error code + Decoder::decoder_status m_status; +}; + +#endif // _WINDOWS + +#endif // __ELF_STRING_TABLE_HPP +