Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/utilities/decoder.hpp@3582bf76420e (annotated)
src/share/vm/utilities/decoder.hpp
Thu, 27 Jan 2011 16:11:27 -0800
- author
- coleenp
- date
- Thu, 27 Jan 2011 16:11:27 -0800
- changeset 2497
- 3582bf76420e
- parent 2364
- 2d4762ec74af
- child 3156
- f08d439fab8c
- permissions
- -rw-r--r--
6990754: Use native memory and reference counting to implement SymbolTable
Summary: move symbols from permgen into C heap and reference count them
Reviewed-by: never, acorn, jmasa, stefank
| 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 | |
| zgu@2364 | 26 | #ifndef __DECODER_HPP |
| zgu@2364 | 27 | #define __DECODER_HPP |
| zgu@2364 | 28 | |
| zgu@2364 | 29 | #include "memory/allocation.hpp" |
| zgu@2364 | 30 | |
| zgu@2364 | 31 | #ifdef _WINDOWS |
| zgu@2364 | 32 | #include <windows.h> |
| zgu@2364 | 33 | #include <imagehlp.h> |
| zgu@2364 | 34 | |
| zgu@2364 | 35 | // functions needed for decoding symbols |
| zgu@2364 | 36 | typedef DWORD (WINAPI *pfn_SymSetOptions)(DWORD); |
| zgu@2364 | 37 | typedef BOOL (WINAPI *pfn_SymInitialize)(HANDLE, PCTSTR, BOOL); |
| zgu@2364 | 38 | typedef BOOL (WINAPI *pfn_SymGetSymFromAddr64)(HANDLE, DWORD64, PDWORD64, PIMAGEHLP_SYMBOL64); |
| zgu@2364 | 39 | typedef DWORD (WINAPI *pfn_UndecorateSymbolName)(const char*, char*, DWORD, DWORD); |
| zgu@2364 | 40 | |
| zgu@2364 | 41 | #else |
| zgu@2364 | 42 | |
| zgu@2364 | 43 | class ElfFile; |
| zgu@2364 | 44 | |
| zgu@2364 | 45 | #endif // _WINDOWS |
| zgu@2364 | 46 | |
| zgu@2364 | 47 | |
| zgu@2364 | 48 | class Decoder: public StackObj { |
| zgu@2364 | 49 | |
| zgu@2364 | 50 | public: |
| zgu@2364 | 51 | // status code for decoding native C frame |
| zgu@2364 | 52 | enum decoder_status { |
| zgu@2364 | 53 | no_error, // successfully decoded frames |
| zgu@2364 | 54 | out_of_memory, // out of memory |
| zgu@2364 | 55 | file_invalid, // invalid elf file |
| zgu@2364 | 56 | file_not_found, // could not found symbol file (on windows), such as jvm.pdb or jvm.map |
| zgu@2364 | 57 | helper_not_found, // could not load dbghelp.dll (Windows only) |
| zgu@2364 | 58 | helper_func_error, // decoding functions not found (Windows only) |
| zgu@2364 | 59 | helper_init_error, // SymInitialize failed (Windows only) |
| zgu@2364 | 60 | symbol_not_found // could not find the symbol |
| zgu@2364 | 61 | }; |
| zgu@2364 | 62 | |
| zgu@2364 | 63 | public: |
| zgu@2364 | 64 | Decoder() { initialize(); }; |
| zgu@2364 | 65 | ~Decoder() { uninitialize(); }; |
| zgu@2364 | 66 | |
| zgu@2364 | 67 | static bool can_decode_C_frame_in_vm(); |
| zgu@2364 | 68 | |
| zgu@2364 | 69 | static void initialize(); |
| zgu@2364 | 70 | static void uninitialize(); |
| zgu@2364 | 71 | |
| zgu@2364 | 72 | #ifdef _WINDOWS |
| zgu@2364 | 73 | static decoder_status decode(address addr, char *buf, int buflen, int *offset); |
| zgu@2364 | 74 | #else |
| zgu@2364 | 75 | static decoder_status decode(address addr, const char* filepath, char *buf, int buflen, int *offset); |
| zgu@2364 | 76 | #endif |
| zgu@2364 | 77 | |
| zgu@2364 | 78 | static bool demangle(const char* symbol, char *buf, int buflen); |
| zgu@2364 | 79 | |
| zgu@2364 | 80 | static decoder_status get_status() { return _decoder_status; }; |
| zgu@2364 | 81 | |
| zgu@2364 | 82 | #ifndef _WINDOWS |
| zgu@2364 | 83 | private: |
| zgu@2364 | 84 | static ElfFile* get_elf_file(const char* filepath); |
| zgu@2364 | 85 | #endif // _WINDOWS |
| zgu@2364 | 86 | |
| zgu@2364 | 87 | |
| zgu@2364 | 88 | private: |
| zgu@2364 | 89 | static decoder_status _decoder_status; |
| zgu@2364 | 90 | static bool _initialized; |
| zgu@2364 | 91 | |
| zgu@2364 | 92 | #ifdef _WINDOWS |
| zgu@2364 | 93 | static HMODULE _dbghelp_handle; |
| zgu@2364 | 94 | static bool _can_decode_in_vm; |
| zgu@2364 | 95 | static pfn_SymGetSymFromAddr64 _pfnSymGetSymFromAddr64; |
| zgu@2364 | 96 | static pfn_UndecorateSymbolName _pfnUndecorateSymbolName; |
| zgu@2364 | 97 | #else |
| zgu@2364 | 98 | static ElfFile* _opened_elf_files; |
| zgu@2364 | 99 | #endif // _WINDOWS |
| zgu@2364 | 100 | }; |
| zgu@2364 | 101 | |
| zgu@2364 | 102 | #endif // __DECODER_HPP |
