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annotate src/os/windows/vm/decoder_windows.hpp @ 20295:3f2894c5052e

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8048112: G1 Full GC needs to support the case when the very first region is not available Summary: Refactor preparation for compaction during Full GC so that it lazily initializes the first compaction point. This also avoids problems later when the first region may not be committed. Also reviewed by K. Barrett. Reviewed-by: brutisso
author tschatzl
date Mon, 21 Jul 2014 10:00:31 +0200
parents 55fb97c4c58d
children 4ca6dc0799b6
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1 /*
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2 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef OS_WINDOWS_VM_DECODER_WINDOWS_HPP
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26 #define OS_WINDOWS_VM_DECIDER_WINDOWS_HPP
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27
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28 #include <windows.h>
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29 #include <imagehlp.h>
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30
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31 #include "utilities/decoder.hpp"
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32
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33 // functions needed for decoding symbols
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34 typedef DWORD (WINAPI *pfn_SymSetOptions)(DWORD);
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35 typedef BOOL (WINAPI *pfn_SymInitialize)(HANDLE, PCTSTR, BOOL);
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36 typedef BOOL (WINAPI *pfn_SymGetSymFromAddr64)(HANDLE, DWORD64, PDWORD64, PIMAGEHLP_SYMBOL64);
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37 typedef DWORD (WINAPI *pfn_UndecorateSymbolName)(const char*, char*, DWORD, DWORD);
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38 typedef BOOL (WINAPI *pfn_SymSetSearchPath)(HANDLE, PCTSTR);
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39 typedef BOOL (WINAPI *pfn_SymGetSearchPath)(HANDLE, PTSTR, int);
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40
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41 #ifdef AMD64
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42 typedef BOOL (WINAPI *pfn_StackWalk64)(DWORD MachineType,
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43 HANDLE hProcess,
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44 HANDLE hThread,
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45 LPSTACKFRAME64 StackFrame,
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46 PVOID ContextRecord,
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47 PREAD_PROCESS_MEMORY_ROUTINE64 ReadMemoryRoutine,
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48 PFUNCTION_TABLE_ACCESS_ROUTINE64 FunctionTableAccessRoutine,
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49 PGET_MODULE_BASE_ROUTINE64 GetModuleBaseRoutine,
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50 PTRANSLATE_ADDRESS_ROUTINE64 TranslateAddress);
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51 typedef PVOID (WINAPI *pfn_SymFunctionTableAccess64)(HANDLE hProcess, DWORD64 AddrBase);
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52 typedef DWORD64 (WINAPI *pfn_SymGetModuleBase64)(HANDLE hProcess, DWORD64 dwAddr);
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53 #endif
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54
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55 class WindowsDecoder : public AbstractDecoder {
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56
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57 public:
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58 WindowsDecoder();
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59 ~WindowsDecoder() { uninitialize(); };
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60
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61 bool can_decode_C_frame_in_vm() const;
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62 bool demangle(const char* symbol, char *buf, int buflen);
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63 bool decode(address addr, char *buf, int buflen, int* offset, const char* modulepath = NULL);
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64 bool decode(address addr, char *buf, int buflen, int* offset, const void* base) {
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65 ShouldNotReachHere();
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66 return false;
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67 }
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68
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69 private:
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70 void initialize();
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71 void uninitialize();
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72
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73 private:
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74 HMODULE _dbghelp_handle;
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75 bool _can_decode_in_vm;
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76 pfn_SymGetSymFromAddr64 _pfnSymGetSymFromAddr64;
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77 pfn_UndecorateSymbolName _pfnUndecorateSymbolName;
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78 #ifdef AMD64
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79 pfn_StackWalk64 _pfnStackWalk64;
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80 pfn_SymFunctionTableAccess64 _pfnSymFunctionTableAccess64;
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81 pfn_SymGetModuleBase64 _pfnSymGetModuleBase64;
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82
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83 friend class WindowsDbgHelp;
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84 #endif
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85 };
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86
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87 #ifdef AMD64
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88 // TODO: refactor and move the handling of dbghelp.dll outside of Decoder
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89 class WindowsDbgHelp : public Decoder {
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90 public:
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91 static BOOL StackWalk64(DWORD MachineType,
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92 HANDLE hProcess,
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93 HANDLE hThread,
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94 LPSTACKFRAME64 StackFrame,
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95 PVOID ContextRecord,
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96 PREAD_PROCESS_MEMORY_ROUTINE64 ReadMemoryRoutine,
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97 PFUNCTION_TABLE_ACCESS_ROUTINE64 FunctionTableAccessRoutine,
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98 PGET_MODULE_BASE_ROUTINE64 GetModuleBaseRoutine,
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99 PTRANSLATE_ADDRESS_ROUTINE64 TranslateAddress);
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100 static PVOID SymFunctionTableAccess64(HANDLE hProcess, DWORD64 AddrBase);
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101
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102 static pfn_SymFunctionTableAccess64 pfnSymFunctionTableAccess64();
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103 static pfn_SymGetModuleBase64 pfnSymGetModuleBase64();
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104 };
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105 #endif
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106
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107 #endif // OS_WINDOWS_VM_DECODER_WINDOWS_HPP
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108