1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/utilities/decoder.hpp Sat Dec 11 13:20:56 2010 -0500
1.3 @@ -0,0 +1,102 @@
1.4 +/*
1.5 + * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +
1.29 +#ifndef __DECODER_HPP
1.30 +#define __DECODER_HPP
1.31 +
1.32 +#include "memory/allocation.hpp"
1.33 +
1.34 +#ifdef _WINDOWS
1.35 +#include <windows.h>
1.36 +#include <imagehlp.h>
1.37 +
1.38 +// functions needed for decoding symbols
1.39 +typedef DWORD (WINAPI *pfn_SymSetOptions)(DWORD);
1.40 +typedef BOOL (WINAPI *pfn_SymInitialize)(HANDLE, PCTSTR, BOOL);
1.41 +typedef BOOL (WINAPI *pfn_SymGetSymFromAddr64)(HANDLE, DWORD64, PDWORD64, PIMAGEHLP_SYMBOL64);
1.42 +typedef DWORD (WINAPI *pfn_UndecorateSymbolName)(const char*, char*, DWORD, DWORD);
1.43 +
1.44 +#else
1.45 +
1.46 +class ElfFile;
1.47 +
1.48 +#endif // _WINDOWS
1.49 +
1.50 +
1.51 +class Decoder: public StackObj {
1.52 +
1.53 + public:
1.54 + // status code for decoding native C frame
1.55 + enum decoder_status {
1.56 + no_error, // successfully decoded frames
1.57 + out_of_memory, // out of memory
1.58 + file_invalid, // invalid elf file
1.59 + file_not_found, // could not found symbol file (on windows), such as jvm.pdb or jvm.map
1.60 + helper_not_found, // could not load dbghelp.dll (Windows only)
1.61 + helper_func_error, // decoding functions not found (Windows only)
1.62 + helper_init_error, // SymInitialize failed (Windows only)
1.63 + symbol_not_found // could not find the symbol
1.64 + };
1.65 +
1.66 + public:
1.67 + Decoder() { initialize(); };
1.68 + ~Decoder() { uninitialize(); };
1.69 +
1.70 + static bool can_decode_C_frame_in_vm();
1.71 +
1.72 + static void initialize();
1.73 + static void uninitialize();
1.74 +
1.75 +#ifdef _WINDOWS
1.76 + static decoder_status decode(address addr, char *buf, int buflen, int *offset);
1.77 +#else
1.78 + static decoder_status decode(address addr, const char* filepath, char *buf, int buflen, int *offset);
1.79 +#endif
1.80 +
1.81 + static bool demangle(const char* symbol, char *buf, int buflen);
1.82 +
1.83 + static decoder_status get_status() { return _decoder_status; };
1.84 +
1.85 +#ifndef _WINDOWS
1.86 + private:
1.87 + static ElfFile* get_elf_file(const char* filepath);
1.88 +#endif // _WINDOWS
1.89 +
1.90 +
1.91 + private:
1.92 + static decoder_status _decoder_status;
1.93 + static bool _initialized;
1.94 +
1.95 +#ifdef _WINDOWS
1.96 + static HMODULE _dbghelp_handle;
1.97 + static bool _can_decode_in_vm;
1.98 + static pfn_SymGetSymFromAddr64 _pfnSymGetSymFromAddr64;
1.99 + static pfn_UndecorateSymbolName _pfnUndecorateSymbolName;
1.100 +#else
1.101 + static ElfFile* _opened_elf_files;
1.102 +#endif // _WINDOWS
1.103 +};
1.104 +
1.105 +#endif // __DECODER_HPP
