Mercurial > hg > truffle
diff src/share/vm/utilities/decoder.hpp @ 4840:0a10d80352d5
Merge
author | brutisso |
---|---|
date | Fri, 27 Jan 2012 09:04:57 +0100 |
parents | d7e3846464d0 |
children | db006a85bf91 |
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--- a/src/share/vm/utilities/decoder.hpp Thu Jan 26 14:14:55 2012 -0800 +++ b/src/share/vm/utilities/decoder.hpp Fri Jan 27 09:04:57 2012 +0100 @@ -1,5 +1,5 @@ /* - * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 1997, 2011, 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 @@ -23,83 +23,78 @@ */ -#ifndef __DECODER_HPP -#define __DECODER_HPP +#ifndef SHARE_VM_UTILITIES_DECODER_HPP +#define SHARE_VM_UTILITIES_DECODER_HPP #include "memory/allocation.hpp" - -#ifdef _WINDOWS -#include <windows.h> -#include <imagehlp.h> - -// functions needed for decoding symbols -typedef DWORD (WINAPI *pfn_SymSetOptions)(DWORD); -typedef BOOL (WINAPI *pfn_SymInitialize)(HANDLE, PCTSTR, BOOL); -typedef BOOL (WINAPI *pfn_SymGetSymFromAddr64)(HANDLE, DWORD64, PDWORD64, PIMAGEHLP_SYMBOL64); -typedef DWORD (WINAPI *pfn_UndecorateSymbolName)(const char*, char*, DWORD, DWORD); +#include "runtime/mutex.hpp" -#elif defined(__APPLE__) - -#else - -class ElfFile; - -#endif // _WINDOWS - - -class Decoder: public StackObj { - - public: +class NullDecoder: public CHeapObj { +public: // status code for decoding native C frame enum decoder_status { - no_error, // successfully decoded frames + not_available = -10, // real decoder is not available + no_error = 0, // successfully decoded frames out_of_memory, // out of memory file_invalid, // invalid elf file file_not_found, // could not found symbol file (on windows), such as jvm.pdb or jvm.map helper_not_found, // could not load dbghelp.dll (Windows only) helper_func_error, // decoding functions not found (Windows only) - helper_init_error, // SymInitialize failed (Windows only) - symbol_not_found // could not find the symbol + helper_init_error // SymInitialize failed (Windows only) }; - public: - Decoder() { initialize(); }; - ~Decoder() { uninitialize(); }; + NullDecoder() { + _decoder_status = not_available; + } + + ~NullDecoder() {}; + + virtual bool decode(address pc, char* buf, int buflen, int* offset, + const char* modulepath = NULL) { + return false; + } + + virtual bool demangle(const char* symbol, char* buf, int buflen) { + return false; + } + + virtual bool can_decode_C_frame_in_vm() const { + return false; + } + virtual decoder_status status() const { + return _decoder_status; + } + + virtual bool has_error() const { + return is_error(_decoder_status); + } + + static bool is_error(decoder_status status) { + return (status > 0); + } + +protected: + decoder_status _decoder_status; +}; + + +class Decoder: AllStatic { +public: + static bool decode(address pc, char* buf, int buflen, int* offset, const char* modulepath = NULL); + static bool demangle(const char* symbol, char* buf, int buflen); static bool can_decode_C_frame_in_vm(); - static void initialize(); - static void uninitialize(); - -#ifdef _WINDOWS - static decoder_status decode(address addr, char *buf, int buflen, int *offset); -#else - static decoder_status decode(address addr, const char* filepath, char *buf, int buflen, int *offset); -#endif - - static bool demangle(const char* symbol, char *buf, int buflen); - - static decoder_status get_status() { return _decoder_status; }; + static void shutdown(); +protected: + static NullDecoder* get_decoder(); -#if !defined(_WINDOWS) && !defined(__APPLE__) - private: - static ElfFile* get_elf_file(const char* filepath); -#endif // _WINDOWS - - - private: - static decoder_status _decoder_status; - static bool _initialized; +private: + static NullDecoder* _decoder; + static NullDecoder _do_nothing_decoder; -#ifdef _WINDOWS - static HMODULE _dbghelp_handle; - static bool _can_decode_in_vm; - static pfn_SymGetSymFromAddr64 _pfnSymGetSymFromAddr64; - static pfn_UndecorateSymbolName _pfnUndecorateSymbolName; -#elif __APPLE__ -#else - static ElfFile* _opened_elf_files; -#endif // _WINDOWS +protected: + static Mutex* _decoder_lock; }; -#endif // __DECODER_HPP +#endif // SHARE_VM_UTILITIES_DECODER_HPP