Mercurial > hg > truffle
annotate src/share/vm/code/scopeDesc.cpp @ 12060:37165c3618a3
8023152: new hotspot build - hs25-b47
Reviewed-by: jcoomes
author | amurillo |
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date | Fri, 16 Aug 2013 04:24:07 -0700 |
parents | da91efe96a93 |
children | e522a00b91aa 78bbf4d43a14 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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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. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "code/debugInfoRec.hpp" | |
27 #include "code/pcDesc.hpp" | |
28 #include "code/scopeDesc.hpp" | |
29 #include "memory/resourceArea.hpp" | |
30 #include "oops/oop.inline.hpp" | |
31 #include "runtime/handles.inline.hpp" | |
0 | 32 |
33 | |
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34 ScopeDesc::ScopeDesc(const nmethod* code, int decode_offset, int obj_decode_offset, bool reexecute, bool return_oop) { |
0 | 35 _code = code; |
36 _decode_offset = decode_offset; | |
37 _objects = decode_object_values(obj_decode_offset); | |
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38 _reexecute = reexecute; |
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39 _return_oop = return_oop; |
0 | 40 decode_body(); |
41 } | |
42 | |
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43 ScopeDesc::ScopeDesc(const nmethod* code, int decode_offset, bool reexecute, bool return_oop) { |
0 | 44 _code = code; |
45 _decode_offset = decode_offset; | |
46 _objects = decode_object_values(DebugInformationRecorder::serialized_null); | |
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47 _reexecute = reexecute; |
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48 _return_oop = return_oop; |
0 | 49 decode_body(); |
50 } | |
51 | |
52 | |
53 ScopeDesc::ScopeDesc(const ScopeDesc* parent) { | |
54 _code = parent->_code; | |
55 _decode_offset = parent->_sender_decode_offset; | |
56 _objects = parent->_objects; | |
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57 _reexecute = false; //reexecute only applies to the first scope |
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58 _return_oop = false; |
0 | 59 decode_body(); |
60 } | |
61 | |
62 | |
63 void ScopeDesc::decode_body() { | |
64 if (decode_offset() == DebugInformationRecorder::serialized_null) { | |
65 // This is a sentinel record, which is only relevant to | |
66 // approximate queries. Decode a reasonable frame. | |
67 _sender_decode_offset = DebugInformationRecorder::serialized_null; | |
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68 _method = _code->method(); |
0 | 69 _bci = InvocationEntryBci; |
70 _locals_decode_offset = DebugInformationRecorder::serialized_null; | |
71 _expressions_decode_offset = DebugInformationRecorder::serialized_null; | |
72 _monitors_decode_offset = DebugInformationRecorder::serialized_null; | |
73 } else { | |
74 // decode header | |
75 DebugInfoReadStream* stream = stream_at(decode_offset()); | |
76 | |
77 _sender_decode_offset = stream->read_int(); | |
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78 _method = stream->read_method(); |
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79 _bci = stream->read_bci(); |
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80 |
0 | 81 // decode offsets for body and sender |
82 _locals_decode_offset = stream->read_int(); | |
83 _expressions_decode_offset = stream->read_int(); | |
84 _monitors_decode_offset = stream->read_int(); | |
85 } | |
86 } | |
87 | |
88 | |
89 GrowableArray<ScopeValue*>* ScopeDesc::decode_scope_values(int decode_offset) { | |
90 if (decode_offset == DebugInformationRecorder::serialized_null) return NULL; | |
91 DebugInfoReadStream* stream = stream_at(decode_offset); | |
92 int length = stream->read_int(); | |
93 GrowableArray<ScopeValue*>* result = new GrowableArray<ScopeValue*> (length); | |
94 for (int index = 0; index < length; index++) { | |
95 result->push(ScopeValue::read_from(stream)); | |
96 } | |
97 return result; | |
98 } | |
99 | |
100 GrowableArray<ScopeValue*>* ScopeDesc::decode_object_values(int decode_offset) { | |
101 if (decode_offset == DebugInformationRecorder::serialized_null) return NULL; | |
102 GrowableArray<ScopeValue*>* result = new GrowableArray<ScopeValue*>(); | |
103 DebugInfoReadStream* stream = new DebugInfoReadStream(_code, decode_offset, result); | |
104 int length = stream->read_int(); | |
105 for (int index = 0; index < length; index++) { | |
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106 // Objects values are pushed to 'result' array during read so that |
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107 // object's fields could reference it (OBJECT_ID_CODE). |
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108 (void)ScopeValue::read_from(stream); |
0 | 109 } |
110 assert(result->length() == length, "inconsistent debug information"); | |
111 return result; | |
112 } | |
113 | |
114 | |
115 GrowableArray<MonitorValue*>* ScopeDesc::decode_monitor_values(int decode_offset) { | |
116 if (decode_offset == DebugInformationRecorder::serialized_null) return NULL; | |
117 DebugInfoReadStream* stream = stream_at(decode_offset); | |
118 int length = stream->read_int(); | |
119 GrowableArray<MonitorValue*>* result = new GrowableArray<MonitorValue*> (length); | |
120 for (int index = 0; index < length; index++) { | |
121 result->push(new MonitorValue(stream)); | |
122 } | |
123 return result; | |
124 } | |
125 | |
126 DebugInfoReadStream* ScopeDesc::stream_at(int decode_offset) const { | |
127 return new DebugInfoReadStream(_code, decode_offset, _objects); | |
128 } | |
129 | |
130 GrowableArray<ScopeValue*>* ScopeDesc::locals() { | |
131 return decode_scope_values(_locals_decode_offset); | |
132 } | |
133 | |
134 GrowableArray<ScopeValue*>* ScopeDesc::expressions() { | |
135 return decode_scope_values(_expressions_decode_offset); | |
136 } | |
137 | |
138 GrowableArray<MonitorValue*>* ScopeDesc::monitors() { | |
139 return decode_monitor_values(_monitors_decode_offset); | |
140 } | |
141 | |
142 GrowableArray<ScopeValue*>* ScopeDesc::objects() { | |
143 return _objects; | |
144 } | |
145 | |
146 bool ScopeDesc::is_top() const { | |
147 return _sender_decode_offset == DebugInformationRecorder::serialized_null; | |
148 } | |
149 | |
150 ScopeDesc* ScopeDesc::sender() const { | |
151 if (is_top()) return NULL; | |
152 return new ScopeDesc(this); | |
153 } | |
154 | |
155 | |
156 #ifndef PRODUCT | |
157 | |
158 void ScopeDesc::print_value_on(outputStream* st) const { | |
159 tty->print(" "); | |
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160 method()->print_short_name(st); |
0 | 161 int lineno = method()->line_number_from_bci(bci()); |
162 if (lineno != -1) { | |
163 st->print_cr("@%d (line %d)", bci(), lineno); | |
164 } else { | |
165 st->print_cr("@%d", bci()); | |
166 } | |
167 } | |
168 | |
169 void ScopeDesc::print_on(outputStream* st) const { | |
170 print_on(st, NULL); | |
171 } | |
172 | |
173 void ScopeDesc::print_on(outputStream* st, PcDesc* pd) const { | |
174 // header | |
175 if (pd != NULL) { | |
176 tty->print_cr("ScopeDesc(pc=" PTR_FORMAT " offset=%x):", pd->real_pc(_code), pd->pc_offset()); | |
177 } | |
178 | |
179 print_value_on(st); | |
180 // decode offsets | |
181 if (WizardMode) { | |
1748 | 182 st->print("ScopeDesc[%d]@" PTR_FORMAT " ", _decode_offset, _code->content_begin()); |
0 | 183 st->print_cr(" offset: %d", _decode_offset); |
184 st->print_cr(" bci: %d", bci()); | |
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185 st->print_cr(" reexecute: %s", should_reexecute() ? "true" : "false"); |
0 | 186 st->print_cr(" locals: %d", _locals_decode_offset); |
187 st->print_cr(" stack: %d", _expressions_decode_offset); | |
188 st->print_cr(" monitor: %d", _monitors_decode_offset); | |
189 st->print_cr(" sender: %d", _sender_decode_offset); | |
190 } | |
191 // locals | |
192 { GrowableArray<ScopeValue*>* l = ((ScopeDesc*) this)->locals(); | |
193 if (l != NULL) { | |
194 tty->print_cr(" Locals"); | |
195 for (int index = 0; index < l->length(); index++) { | |
196 st->print(" - l%d: ", index); | |
197 l->at(index)->print_on(st); | |
198 st->cr(); | |
199 } | |
200 } | |
201 } | |
202 // expressions | |
203 { GrowableArray<ScopeValue*>* l = ((ScopeDesc*) this)->expressions(); | |
204 if (l != NULL) { | |
205 st->print_cr(" Expression stack"); | |
206 for (int index = 0; index < l->length(); index++) { | |
207 st->print(" - @%d: ", index); | |
208 l->at(index)->print_on(st); | |
209 st->cr(); | |
210 } | |
211 } | |
212 } | |
213 // monitors | |
214 { GrowableArray<MonitorValue*>* l = ((ScopeDesc*) this)->monitors(); | |
215 if (l != NULL) { | |
216 st->print_cr(" Monitor stack"); | |
217 for (int index = 0; index < l->length(); index++) { | |
218 st->print(" - @%d: ", index); | |
219 l->at(index)->print_on(st); | |
220 st->cr(); | |
221 } | |
222 } | |
223 } | |
224 | |
225 #ifdef COMPILER2 | |
226 if (DoEscapeAnalysis && is_top() && _objects != NULL) { | |
227 tty->print_cr("Objects"); | |
228 for (int i = 0; i < _objects->length(); i++) { | |
229 ObjectValue* sv = (ObjectValue*) _objects->at(i); | |
230 tty->print(" - %d: ", sv->id()); | |
231 sv->print_fields_on(tty); | |
232 tty->cr(); | |
233 } | |
234 } | |
235 #endif // COMPILER2 | |
236 } | |
237 | |
238 #endif | |
239 | |
240 void ScopeDesc::verify() { | |
241 ResourceMark rm; | |
242 guarantee(method()->is_method(), "type check"); | |
243 | |
244 // check if we have any illegal elements on the expression stack | |
245 { GrowableArray<ScopeValue*>* l = expressions(); | |
246 if (l != NULL) { | |
247 for (int index = 0; index < l->length(); index++) { | |
248 //guarantee(!l->at(index)->is_illegal(), "expression element cannot be illegal"); | |
249 } | |
250 } | |
251 } | |
252 } |