Mercurial > hg > graal-compiler
annotate src/share/vm/utilities/decoder.hpp @ 4911:d903bf750e9f
7129514: time warp warnings after 7117303
Summary: Replace calls to os::javaTimeMillis() that are used to update the milliseconds since the last GC to an equivalent that uses a monotonically non-decreasing time source.
Reviewed-by: ysr, jmasa
author | johnc |
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date | Wed, 18 Jan 2012 09:50:16 -0800 |
parents | d7e3846464d0 |
children | db006a85bf91 |
rev | line source |
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1 /* |
4803 | 2 * Copyright (c) 1997, 2011, 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 |
4803 | 26 #ifndef SHARE_VM_UTILITIES_DECODER_HPP |
27 #define SHARE_VM_UTILITIES_DECODER_HPP | |
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28 |
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29 #include "memory/allocation.hpp" |
4803 | 30 #include "runtime/mutex.hpp" |
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31 |
4803 | 32 class NullDecoder: public CHeapObj { |
33 public: | |
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34 // status code for decoding native C frame |
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35 enum decoder_status { |
4803 | 36 not_available = -10, // real decoder is not available |
37 no_error = 0, // successfully decoded frames | |
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38 out_of_memory, // out of memory |
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39 file_invalid, // invalid elf file |
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40 file_not_found, // could not found symbol file (on windows), such as jvm.pdb or jvm.map |
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41 helper_not_found, // could not load dbghelp.dll (Windows only) |
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42 helper_func_error, // decoding functions not found (Windows only) |
4803 | 43 helper_init_error // SymInitialize failed (Windows only) |
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44 }; |
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45 |
4803 | 46 NullDecoder() { |
47 _decoder_status = not_available; | |
48 } | |
49 | |
50 ~NullDecoder() {}; | |
51 | |
52 virtual bool decode(address pc, char* buf, int buflen, int* offset, | |
53 const char* modulepath = NULL) { | |
54 return false; | |
55 } | |
56 | |
57 virtual bool demangle(const char* symbol, char* buf, int buflen) { | |
58 return false; | |
59 } | |
60 | |
61 virtual bool can_decode_C_frame_in_vm() const { | |
62 return false; | |
63 } | |
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64 |
4803 | 65 virtual decoder_status status() const { |
66 return _decoder_status; | |
67 } | |
68 | |
69 virtual bool has_error() const { | |
70 return is_error(_decoder_status); | |
71 } | |
72 | |
73 static bool is_error(decoder_status status) { | |
74 return (status > 0); | |
75 } | |
76 | |
77 protected: | |
78 decoder_status _decoder_status; | |
79 }; | |
80 | |
81 | |
82 class Decoder: AllStatic { | |
83 public: | |
84 static bool decode(address pc, char* buf, int buflen, int* offset, const char* modulepath = NULL); | |
85 static bool demangle(const char* symbol, char* buf, int buflen); | |
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86 static bool can_decode_C_frame_in_vm(); |
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87 |
4803 | 88 static void shutdown(); |
89 protected: | |
90 static NullDecoder* get_decoder(); | |
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91 |
4803 | 92 private: |
93 static NullDecoder* _decoder; | |
94 static NullDecoder _do_nothing_decoder; | |
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95 |
4803 | 96 protected: |
97 static Mutex* _decoder_lock; | |
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98 }; |
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99 |
4803 | 100 #endif // SHARE_VM_UTILITIES_DECODER_HPP |