Mercurial > hg > truffle
annotate src/share/vm/utilities/decoder.cpp @ 6862:8a5ea0a9ccc4
7127708: G1: change task num types from int to uint in concurrent mark
Summary: Change the type of various task num fields, parameters etc to unsigned and rename them to be more consistent with the other collectors. Code changes were also reviewed by Vitaly Davidovich.
Reviewed-by: johnc
Contributed-by: Kaushik Srenevasan <kaushik@twitter.com>
| author | johnc |
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| date | Sat, 06 Oct 2012 01:17:44 -0700 |
| parents | 3b01d0321dfa |
| children | b9a9ed0f8eeb |
| rev | line source |
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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 |
| 6258 | 94 bool Decoder::decode(address addr, char* buf, int buflen, int* offset, const void* base) { |
| 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(); | |
| 100 assert(decoder != NULL, "null decoder"); | |
| 101 | |
| 102 return decoder->decode(addr, buf, buflen, offset, base); | |
| 103 } | |
| 104 | |
| 105 | |
| 4803 | 106 bool Decoder::demangle(const char* symbol, char* buf, int buflen) { |
| 4917 | 107 assert(_shared_decoder_lock != NULL, "Just check"); |
| 108 bool error_handling_thread = os::current_thread_id() == VMError::first_error_tid; | |
| 109 MutexLockerEx locker(error_handling_thread ? NULL : _shared_decoder_lock, true); | |
| 110 AbstractDecoder* decoder = error_handling_thread ? | |
| 111 get_error_handler_instance(): get_shared_instance(); | |
| 4803 | 112 assert(decoder != NULL, "null decoder"); |
| 113 return decoder->demangle(symbol, buf, buflen); | |
| 114 } | |
| 115 | |
| 116 bool Decoder::can_decode_C_frame_in_vm() { | |
| 4917 | 117 assert(_shared_decoder_lock != NULL, "Just check"); |
| 118 bool error_handling_thread = os::current_thread_id() == VMError::first_error_tid; | |
| 119 MutexLockerEx locker(error_handling_thread ? NULL : _shared_decoder_lock, true); | |
| 120 AbstractDecoder* decoder = error_handling_thread ? | |
| 121 get_error_handler_instance(): get_shared_instance(); | |
| 4803 | 122 assert(decoder != NULL, "null decoder"); |
| 123 return decoder->can_decode_C_frame_in_vm(); | |
| 124 } | |
| 125 | |
| 4917 | 126 /* |
| 127 * Shutdown shared decoder and replace it with | |
| 128 * _do_nothing_decoder. Do nothing with error handler | |
| 129 * instance, since the JVM is going down. | |
| 130 */ | |
| 4803 | 131 void Decoder::shutdown() { |
| 4917 | 132 assert(_shared_decoder_lock != NULL, "Just check"); |
| 133 MutexLockerEx locker(_shared_decoder_lock, true); | |
| 4803 | 134 |
| 4917 | 135 if (_shared_decoder != NULL && |
| 136 _shared_decoder != &_do_nothing_decoder) { | |
| 137 delete _shared_decoder; | |
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138 } |
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139 |
| 4917 | 140 _shared_decoder = &_do_nothing_decoder; |
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141 } |
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142 |