Mercurial > hg > truffle
annotate src/share/vm/utilities/decoder.cpp @ 17467:55fb97c4c58d hs25-b65
8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013
Summary: Copyright year updated for files modified during 2013
Reviewed-by: twisti, iveresov
| author | mikael |
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| date | Tue, 24 Dec 2013 11:48:39 -0800 |
| parents | 38f750491293 |
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1 /* |
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2 * Copyright (c) 1997, 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 #include "precompiled.hpp" |
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26 #include "prims/jvm.h" |
| 4917 | 27 #include "runtime/os.hpp" |
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28 #include "utilities/decoder.hpp" |
| 4917 | 29 #include "utilities/vmError.hpp" |
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30 |
| 4803 | 31 #if defined(_WINDOWS) |
| 32 #include "decoder_windows.hpp" | |
| 33 #elif defined(__APPLE__) | |
| 34 #include "decoder_machO.hpp" | |
| 35 #else | |
| 36 #include "decoder_elf.hpp" | |
| 37 #endif | |
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38 |
| 4917 | 39 AbstractDecoder* Decoder::_shared_decoder = NULL; |
| 40 AbstractDecoder* Decoder::_error_handler_decoder = NULL; | |
| 41 NullDecoder Decoder::_do_nothing_decoder; | |
| 42 Mutex* Decoder::_shared_decoder_lock = new Mutex(Mutex::native, | |
| 43 "SharedDecoderLock"); | |
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44 |
| 4917 | 45 AbstractDecoder* Decoder::get_shared_instance() { |
| 46 assert(_shared_decoder_lock != NULL && _shared_decoder_lock->owned_by_self(), | |
| 4803 | 47 "Require DecoderLock to enter"); |
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48 |
| 4917 | 49 if (_shared_decoder == NULL) { |
| 50 _shared_decoder = create_decoder(); | |
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51 } |
| 4917 | 52 return _shared_decoder; |
| 53 } | |
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54 |
| 4917 | 55 AbstractDecoder* Decoder::get_error_handler_instance() { |
| 56 if (_error_handler_decoder == NULL) { | |
| 57 _error_handler_decoder = create_decoder(); | |
| 58 } | |
| 59 return _error_handler_decoder; | |
| 60 } | |
| 61 | |
| 62 | |
| 63 AbstractDecoder* Decoder::create_decoder() { | |
| 64 AbstractDecoder* decoder; | |
| 4803 | 65 #if defined(_WINDOWS) |
| 4917 | 66 decoder = new (std::nothrow) WindowsDecoder(); |
| 4803 | 67 #elif defined (__APPLE__) |
| 4917 | 68 decoder = new (std::nothrow)MachODecoder(); |
| 4803 | 69 #else |
| 4917 | 70 decoder = new (std::nothrow)ElfDecoder(); |
| 4803 | 71 #endif |
| 72 | |
| 4917 | 73 if (decoder == NULL || decoder->has_error()) { |
| 74 if (decoder != NULL) { | |
| 75 delete decoder; | |
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76 } |
| 4917 | 77 decoder = &_do_nothing_decoder; |
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78 } |
| 4917 | 79 return decoder; |
| 4803 | 80 } |
| 81 | |
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82 inline bool DecoderLocker::is_first_error_thread() { |
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83 return (os::current_thread_id() == VMError::get_first_error_tid()); |
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84 } |
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85 |
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86 DecoderLocker::DecoderLocker() : |
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87 MutexLockerEx(DecoderLocker::is_first_error_thread() ? |
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88 NULL : Decoder::shared_decoder_lock(), true) { |
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89 _decoder = is_first_error_thread() ? |
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90 Decoder::get_error_handler_instance() : Decoder::get_shared_instance(); |
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91 assert(_decoder != NULL, "null decoder"); |
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92 } |
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93 |
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94 Mutex* Decoder::shared_decoder_lock() { |
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95 assert(_shared_decoder_lock != NULL, "Just check"); |
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96 return _shared_decoder_lock; |
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97 } |
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98 |
| 4803 | 99 bool Decoder::decode(address addr, char* buf, int buflen, int* offset, const char* modulepath) { |
| 4917 | 100 assert(_shared_decoder_lock != NULL, "Just check"); |
| 101 bool error_handling_thread = os::current_thread_id() == VMError::first_error_tid; | |
| 102 MutexLockerEx locker(error_handling_thread ? NULL : _shared_decoder_lock, true); | |
| 103 AbstractDecoder* decoder = error_handling_thread ? | |
| 104 get_error_handler_instance(): get_shared_instance(); | |
| 4803 | 105 assert(decoder != NULL, "null decoder"); |
| 106 | |
| 107 return decoder->decode(addr, buf, buflen, offset, modulepath); | |
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108 } |
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109 |
| 6258 | 110 bool Decoder::decode(address addr, char* buf, int buflen, int* offset, const void* base) { |
| 111 assert(_shared_decoder_lock != NULL, "Just check"); | |
| 112 bool error_handling_thread = os::current_thread_id() == VMError::first_error_tid; | |
| 113 MutexLockerEx locker(error_handling_thread ? NULL : _shared_decoder_lock, true); | |
| 114 AbstractDecoder* decoder = error_handling_thread ? | |
| 115 get_error_handler_instance(): get_shared_instance(); | |
| 116 assert(decoder != NULL, "null decoder"); | |
| 117 | |
| 118 return decoder->decode(addr, buf, buflen, offset, base); | |
| 119 } | |
| 120 | |
| 121 | |
| 4803 | 122 bool Decoder::demangle(const char* symbol, char* buf, int buflen) { |
| 4917 | 123 assert(_shared_decoder_lock != NULL, "Just check"); |
| 124 bool error_handling_thread = os::current_thread_id() == VMError::first_error_tid; | |
| 125 MutexLockerEx locker(error_handling_thread ? NULL : _shared_decoder_lock, true); | |
| 126 AbstractDecoder* decoder = error_handling_thread ? | |
| 127 get_error_handler_instance(): get_shared_instance(); | |
| 4803 | 128 assert(decoder != NULL, "null decoder"); |
| 129 return decoder->demangle(symbol, buf, buflen); | |
| 130 } | |
| 131 | |
| 132 bool Decoder::can_decode_C_frame_in_vm() { | |
| 4917 | 133 assert(_shared_decoder_lock != NULL, "Just check"); |
| 134 bool error_handling_thread = os::current_thread_id() == VMError::first_error_tid; | |
| 135 MutexLockerEx locker(error_handling_thread ? NULL : _shared_decoder_lock, true); | |
| 136 AbstractDecoder* decoder = error_handling_thread ? | |
| 137 get_error_handler_instance(): get_shared_instance(); | |
| 4803 | 138 assert(decoder != NULL, "null decoder"); |
| 139 return decoder->can_decode_C_frame_in_vm(); | |
| 140 } | |
| 141 | |
| 4917 | 142 /* |
| 143 * Shutdown shared decoder and replace it with | |
| 144 * _do_nothing_decoder. Do nothing with error handler | |
| 145 * instance, since the JVM is going down. | |
| 146 */ | |
| 4803 | 147 void Decoder::shutdown() { |
| 4917 | 148 assert(_shared_decoder_lock != NULL, "Just check"); |
| 149 MutexLockerEx locker(_shared_decoder_lock, true); | |
| 4803 | 150 |
| 4917 | 151 if (_shared_decoder != NULL && |
| 152 _shared_decoder != &_do_nothing_decoder) { | |
| 153 delete _shared_decoder; | |
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154 } |
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155 |
| 4917 | 156 _shared_decoder = &_do_nothing_decoder; |
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157 } |
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158 |