Mercurial > hg > truffle
annotate src/share/vm/utilities/decoder.cpp @ 4917:db006a85bf91
7141259: Native stack is missing in hs_err
Summary: Code cleanup and creating a private decoder for error handler, since it can be triggered from in signal handler, where no lock can be taken
Reviewed-by: dholmes, kamg, acorn, coleenp
| author | zgu |
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| date | Thu, 09 Feb 2012 10:16:26 -0500 |
| parents | d7e3846464d0 |
| children | 3b01d0321dfa |
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1 /* |
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2 * Copyright (c) 1997, 2010, 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" |
| 4803 | 27 #include "runtime/mutexLocker.hpp" |
| 4917 | 28 #include "runtime/os.hpp" |
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29 #include "utilities/decoder.hpp" |
| 4917 | 30 #include "utilities/vmError.hpp" |
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31 |
| 4803 | 32 #if defined(_WINDOWS) |
| 33 #include "decoder_windows.hpp" | |
| 34 #elif defined(__APPLE__) | |
| 35 #include "decoder_machO.hpp" | |
| 36 #else | |
| 37 #include "decoder_elf.hpp" | |
| 38 #endif | |
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39 |
| 4917 | 40 AbstractDecoder* Decoder::_shared_decoder = NULL; |
| 41 AbstractDecoder* Decoder::_error_handler_decoder = NULL; | |
| 42 NullDecoder Decoder::_do_nothing_decoder; | |
| 43 Mutex* Decoder::_shared_decoder_lock = new Mutex(Mutex::native, | |
| 44 "SharedDecoderLock"); | |
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45 |
| 4917 | 46 AbstractDecoder* Decoder::get_shared_instance() { |
| 47 assert(_shared_decoder_lock != NULL && _shared_decoder_lock->owned_by_self(), | |
| 4803 | 48 "Require DecoderLock to enter"); |
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49 |
| 4917 | 50 if (_shared_decoder == NULL) { |
| 51 _shared_decoder = create_decoder(); | |
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52 } |
| 4917 | 53 return _shared_decoder; |
| 54 } | |
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55 |
| 4917 | 56 AbstractDecoder* Decoder::get_error_handler_instance() { |
| 57 if (_error_handler_decoder == NULL) { | |
| 58 _error_handler_decoder = create_decoder(); | |
| 59 } | |
| 60 return _error_handler_decoder; | |
| 61 } | |
| 62 | |
| 63 | |
| 64 AbstractDecoder* Decoder::create_decoder() { | |
| 65 AbstractDecoder* decoder; | |
| 4803 | 66 #if defined(_WINDOWS) |
| 4917 | 67 decoder = new (std::nothrow) WindowsDecoder(); |
| 4803 | 68 #elif defined (__APPLE__) |
| 4917 | 69 decoder = new (std::nothrow)MachODecoder(); |
| 4803 | 70 #else |
| 4917 | 71 decoder = new (std::nothrow)ElfDecoder(); |
| 4803 | 72 #endif |
| 73 | |
| 4917 | 74 if (decoder == NULL || decoder->has_error()) { |
| 75 if (decoder != NULL) { | |
| 76 delete decoder; | |
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77 } |
| 4917 | 78 decoder = &_do_nothing_decoder; |
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79 } |
| 4917 | 80 return decoder; |
| 4803 | 81 } |
| 82 | |
| 83 bool Decoder::decode(address addr, char* buf, int buflen, int* offset, const char* modulepath) { | |
| 4917 | 84 assert(_shared_decoder_lock != NULL, "Just check"); |
| 85 bool error_handling_thread = os::current_thread_id() == VMError::first_error_tid; | |
| 86 MutexLockerEx locker(error_handling_thread ? NULL : _shared_decoder_lock, true); | |
| 87 AbstractDecoder* decoder = error_handling_thread ? | |
| 88 get_error_handler_instance(): get_shared_instance(); | |
| 4803 | 89 assert(decoder != NULL, "null decoder"); |
| 90 | |
| 91 return decoder->decode(addr, buf, buflen, offset, modulepath); | |
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92 } |
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93 |
| 4803 | 94 bool Decoder::demangle(const char* symbol, char* buf, int buflen) { |
| 4917 | 95 assert(_shared_decoder_lock != NULL, "Just check"); |
| 96 bool error_handling_thread = os::current_thread_id() == VMError::first_error_tid; | |
| 97 MutexLockerEx locker(error_handling_thread ? NULL : _shared_decoder_lock, true); | |
| 98 AbstractDecoder* decoder = error_handling_thread ? | |
| 99 get_error_handler_instance(): get_shared_instance(); | |
| 4803 | 100 assert(decoder != NULL, "null decoder"); |
| 101 return decoder->demangle(symbol, buf, buflen); | |
| 102 } | |
| 103 | |
| 104 bool Decoder::can_decode_C_frame_in_vm() { | |
| 4917 | 105 assert(_shared_decoder_lock != NULL, "Just check"); |
| 106 bool error_handling_thread = os::current_thread_id() == VMError::first_error_tid; | |
| 107 MutexLockerEx locker(error_handling_thread ? NULL : _shared_decoder_lock, true); | |
| 108 AbstractDecoder* decoder = error_handling_thread ? | |
| 109 get_error_handler_instance(): get_shared_instance(); | |
| 4803 | 110 assert(decoder != NULL, "null decoder"); |
| 111 return decoder->can_decode_C_frame_in_vm(); | |
| 112 } | |
| 113 | |
| 4917 | 114 /* |
| 115 * Shutdown shared decoder and replace it with | |
| 116 * _do_nothing_decoder. Do nothing with error handler | |
| 117 * instance, since the JVM is going down. | |
| 118 */ | |
| 4803 | 119 void Decoder::shutdown() { |
| 4917 | 120 assert(_shared_decoder_lock != NULL, "Just check"); |
| 121 MutexLockerEx locker(_shared_decoder_lock, true); | |
| 4803 | 122 |
| 4917 | 123 if (_shared_decoder != NULL && |
| 124 _shared_decoder != &_do_nothing_decoder) { | |
| 125 delete _shared_decoder; | |
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126 } |
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127 |
| 4917 | 128 _shared_decoder = &_do_nothing_decoder; |
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129 } |
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130 |