Mercurial > hg > graal-compiler
annotate src/share/vm/utilities/decoder.cpp @ 4844:bf864f701a4a
7066129: GarbageCollectorMXBean#getLastGcInfo leaks native memory
Summary: Make GCStatInfo a resource object
Reviewed-by: phh, coleenp
author | dsamersoff |
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date | Wed, 25 Jan 2012 02:29:05 +0400 |
parents | d7e3846464d0 |
children | db006a85bf91 |
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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" |
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28 #include "utilities/decoder.hpp" |
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29 |
4803 | 30 #if defined(_WINDOWS) |
31 #include "decoder_windows.hpp" | |
32 #elif defined(__APPLE__) | |
33 #include "decoder_machO.hpp" | |
34 #else | |
35 #include "decoder_elf.hpp" | |
36 #endif | |
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37 |
4803 | 38 NullDecoder* Decoder::_decoder = NULL; |
39 NullDecoder Decoder::_do_nothing_decoder; | |
40 Mutex* Decoder::_decoder_lock = new Mutex(Mutex::safepoint, | |
41 "DecoderLock"); | |
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42 |
4803 | 43 // _decoder_lock should already acquired before enter this method |
44 NullDecoder* Decoder::get_decoder() { | |
45 assert(_decoder_lock != NULL && _decoder_lock->owned_by_self(), | |
46 "Require DecoderLock to enter"); | |
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47 |
4803 | 48 if (_decoder != NULL) { |
49 return _decoder; | |
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50 } |
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51 |
4803 | 52 // Decoder is a secondary service. Although, it is good to have, |
53 // but we can live without it. | |
54 #if defined(_WINDOWS) | |
55 _decoder = new (std::nothrow) WindowsDecoder(); | |
56 #elif defined (__APPLE__) | |
57 _decoder = new (std::nothrow)MachODecoder(); | |
58 #else | |
59 _decoder = new (std::nothrow)ElfDecoder(); | |
60 #endif | |
61 | |
62 if (_decoder == NULL || _decoder->has_error()) { | |
63 if (_decoder != NULL) { | |
64 delete _decoder; | |
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65 } |
4803 | 66 _decoder = &_do_nothing_decoder; |
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67 } |
4803 | 68 return _decoder; |
69 } | |
70 | |
71 bool Decoder::decode(address addr, char* buf, int buflen, int* offset, const char* modulepath) { | |
72 assert(_decoder_lock != NULL, "Just check"); | |
73 MutexLockerEx locker(_decoder_lock, true); | |
74 NullDecoder* decoder = get_decoder(); | |
75 assert(decoder != NULL, "null decoder"); | |
76 | |
77 return decoder->decode(addr, buf, buflen, offset, modulepath); | |
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78 } |
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79 |
4803 | 80 bool Decoder::demangle(const char* symbol, char* buf, int buflen) { |
81 assert(_decoder_lock != NULL, "Just check"); | |
82 MutexLockerEx locker(_decoder_lock, true); | |
83 NullDecoder* decoder = get_decoder(); | |
84 assert(decoder != NULL, "null decoder"); | |
85 return decoder->demangle(symbol, buf, buflen); | |
86 } | |
87 | |
88 bool Decoder::can_decode_C_frame_in_vm() { | |
89 assert(_decoder_lock != NULL, "Just check"); | |
90 MutexLockerEx locker(_decoder_lock, true); | |
91 NullDecoder* decoder = get_decoder(); | |
92 assert(decoder != NULL, "null decoder"); | |
93 return decoder->can_decode_C_frame_in_vm(); | |
94 } | |
95 | |
96 // shutdown real decoder and replace it with | |
97 // _do_nothing_decoder | |
98 void Decoder::shutdown() { | |
99 assert(_decoder_lock != NULL, "Just check"); | |
100 MutexLockerEx locker(_decoder_lock, true); | |
101 | |
102 if (_decoder != NULL && _decoder != &_do_nothing_decoder) { | |
103 delete _decoder; | |
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104 } |
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105 |
4803 | 106 _decoder = &_do_nothing_decoder; |
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107 } |
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108 |