Mercurial > hg > truffle
annotate src/share/vm/code/scopeDesc.hpp @ 928:d0acbc302e14
6795465: Crash in assembler_sparc.cpp with client compiler on solaris-sparc
Reviewed-by: twisti, cfang
| author | never |
|---|---|
| date | Mon, 17 Aug 2009 14:45:02 -0700 |
| parents | 9987d9d5eb0e |
| children | 72088be4b386 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * Copyright 1997-2006 Sun Microsystems, Inc. All Rights Reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 // SimpleScopeDesc is used when all you need to extract from | |
| 26 // a given pc,nmethod pair is a methodOop and a bci. This is | |
| 27 // quite a bit faster than allocating a full ScopeDesc, but | |
| 28 // very limited in abilities. | |
| 29 | |
| 30 class SimpleScopeDesc : public StackObj { | |
| 31 private: | |
| 32 methodOop _method; | |
| 33 int _bci; | |
| 34 | |
| 35 public: | |
| 36 SimpleScopeDesc(nmethod* code,address pc) { | |
| 37 PcDesc* pc_desc = code->pc_desc_at(pc); | |
| 38 assert(pc_desc != NULL, "Must be able to find matching PcDesc"); | |
| 39 DebugInfoReadStream buffer(code, pc_desc->scope_decode_offset()); | |
| 40 int ignore_sender = buffer.read_int(); | |
| 41 _method = methodOop(buffer.read_oop()); | |
|
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9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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42 bool dummy_reexecute; //only methodOop and bci are needed! |
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9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
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43 _bci = buffer.read_bci_and_reexecute(dummy_reexecute); |
| 0 | 44 } |
| 45 | |
| 46 methodOop method() { return _method; } | |
| 47 int bci() { return _bci; } | |
| 48 }; | |
| 49 | |
| 50 // ScopeDescs contain the information that makes source-level debugging of | |
| 51 // nmethods possible; each scopeDesc describes a method activation | |
| 52 | |
| 53 class ScopeDesc : public ResourceObj { | |
| 54 public: | |
| 55 // Constructor | |
| 56 ScopeDesc(const nmethod* code, int decode_offset, int obj_decode_offset); | |
| 57 | |
| 58 // Calls above, giving default value of "serialized_null" to the | |
| 59 // "obj_decode_offset" argument. (We don't use a default argument to | |
| 60 // avoid a .hpp-.hpp dependency.) | |
| 61 ScopeDesc(const nmethod* code, int decode_offset); | |
| 62 | |
| 63 // JVM state | |
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6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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64 methodHandle method() const { return _method; } |
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9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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65 int bci() const { return _bci; } |
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9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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changeset
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66 bool should_reexecute() const { return _reexecute; } |
| 0 | 67 |
| 68 GrowableArray<ScopeValue*>* locals(); | |
| 69 GrowableArray<ScopeValue*>* expressions(); | |
| 70 GrowableArray<MonitorValue*>* monitors(); | |
| 71 GrowableArray<ScopeValue*>* objects(); | |
| 72 | |
| 73 // Stack walking, returns NULL if this is the outer most scope. | |
| 74 ScopeDesc* sender() const; | |
| 75 | |
| 76 // Returns where the scope was decoded | |
| 77 int decode_offset() const { return _decode_offset; } | |
| 78 | |
| 79 // Tells whether sender() returns NULL | |
| 80 bool is_top() const; | |
| 81 // Tells whether sd is equal to this | |
| 82 bool is_equal(ScopeDesc* sd) const; | |
| 83 | |
| 84 private: | |
| 85 // Alternative constructor | |
| 86 ScopeDesc(const ScopeDesc* parent); | |
| 87 | |
| 88 // JVM state | |
| 89 methodHandle _method; | |
| 90 int _bci; | |
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9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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91 bool _reexecute; |
| 0 | 92 |
| 93 // Decoding offsets | |
| 94 int _decode_offset; | |
| 95 int _sender_decode_offset; | |
| 96 int _locals_decode_offset; | |
| 97 int _expressions_decode_offset; | |
| 98 int _monitors_decode_offset; | |
| 99 | |
| 100 // Object pool | |
| 101 GrowableArray<ScopeValue*>* _objects; | |
| 102 | |
| 103 // Nmethod information | |
| 104 const nmethod* _code; | |
| 105 | |
| 106 // Decoding operations | |
| 107 void decode_body(); | |
| 108 GrowableArray<ScopeValue*>* decode_scope_values(int decode_offset); | |
| 109 GrowableArray<MonitorValue*>* decode_monitor_values(int decode_offset); | |
| 110 GrowableArray<ScopeValue*>* decode_object_values(int decode_offset); | |
| 111 | |
| 112 DebugInfoReadStream* stream_at(int decode_offset) const; | |
| 113 | |
| 114 | |
| 115 public: | |
| 116 // Verification | |
| 117 void verify(); | |
| 118 | |
| 119 #ifndef PRODUCT | |
| 120 public: | |
| 121 // Printing support | |
| 122 void print_on(outputStream* st) const; | |
| 123 void print_on(outputStream* st, PcDesc* pd) const; | |
| 124 void print_value_on(outputStream* st) const; | |
| 125 #endif | |
| 126 }; |