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src/share/vm/utilities/elfStringTable.hpp@2d4762ec74af (annotated)

src/share/vm/utilities/elfStringTable.hpp

Sat, 11 Dec 2010 13:20:56 -0500

author

zgu

date

Sat, 11 Dec 2010 13:20:56 -0500

changeset 2364

2d4762ec74af

child 3156

f08d439fab8c

permissions

-rw-r--r--

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

zgu@2364	1	/*
zgu@2364	2	* Copyright (c) 1997, 2010, 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@2364	25	#ifndef __ELF_STRING_TABLE_HPP
zgu@2364	26	#define __ELF_STRING_TABLE_HPP
zgu@2364	27
zgu@2364	28	#ifndef _WINDOWS
zgu@2364	29
zgu@2364	30	#include "memory/allocation.hpp"
zgu@2364	31	#include "utilities/decoder.hpp"
zgu@2364	32	#include "utilities/elfFile.hpp"
zgu@2364	33
zgu@2364	34
zgu@2364	35	// The string table represents a string table section in an elf file.
zgu@2364	36	// Whenever there is enough memory, it will load whole string table as
zgu@2364	37	// one blob. Otherwise, it will load string from file when requested.
zgu@2364	38
zgu@2364	39	#define MAX_SYMBOL_LEN 256
zgu@2364	40
zgu@2364	41	class ElfStringTable: CHeapObj {
zgu@2364	42	friend class ElfFile;
zgu@2364	43	public:
zgu@2364	44	ElfStringTable(FILE* file, Elf_Shdr shdr, int index);
zgu@2364	45	~ElfStringTable();
zgu@2364	46
zgu@2364	47	// section index
zgu@2364	48	int index() { return m_index; };
zgu@2364	49
zgu@2364	50	// get string at specified offset
zgu@2364	51	const char* string_at(int offset);
zgu@2364	52
zgu@2364	53	// get status code
zgu@2364	54	Decoder::decoder_status get_status() { return m_status; };
zgu@2364	55
zgu@2364	56	protected:
zgu@2364	57	ElfStringTable* m_next;
zgu@2364	58
zgu@2364	59	// section index
zgu@2364	60	int m_index;
zgu@2364	61
zgu@2364	62	// holds complete string table if can
zgu@2364	63	// allocate enough memory
zgu@2364	64	const char* m_table;
zgu@2364	65
zgu@2364	66	// file contains string table
zgu@2364	67	FILE* m_file;
zgu@2364	68
zgu@2364	69	// section header
zgu@2364	70	Elf_Shdr m_shdr;
zgu@2364	71
zgu@2364	72	// buffer for reading individual string
zgu@2364	73	char m_symbol[MAX_SYMBOL_LEN];
zgu@2364	74
zgu@2364	75	// error code
zgu@2364	76	Decoder::decoder_status m_status;
zgu@2364	77	};
zgu@2364	78
zgu@2364	79	#endif // _WINDOWS
zgu@2364	80
zgu@2364	81	#endif // __ELF_STRING_TABLE_HPP
zgu@2364	82