Mercurial > hg > truffle
annotate src/share/vm/code/scopeDesc.cpp @ 497:7aadaf46ecd7
Merge
author | jmasa |
---|---|
date | Fri, 19 Dec 2008 12:15:34 -0800 |
parents | d1605aabd0a1 |
children | 9987d9d5eb0e |
rev | line source |
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0 | 1 /* |
196 | 2 * Copyright 1997-2008 Sun Microsystems, Inc. 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 * | |
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 # include "incls/_precompiled.incl" | |
26 # include "incls/_scopeDesc.cpp.incl" | |
27 | |
28 | |
29 ScopeDesc::ScopeDesc(const nmethod* code, int decode_offset, int obj_decode_offset) { | |
30 _code = code; | |
31 _decode_offset = decode_offset; | |
32 _objects = decode_object_values(obj_decode_offset); | |
33 decode_body(); | |
34 } | |
35 | |
36 ScopeDesc::ScopeDesc(const nmethod* code, int decode_offset) { | |
37 _code = code; | |
38 _decode_offset = decode_offset; | |
39 _objects = decode_object_values(DebugInformationRecorder::serialized_null); | |
40 decode_body(); | |
41 } | |
42 | |
43 | |
44 ScopeDesc::ScopeDesc(const ScopeDesc* parent) { | |
45 _code = parent->_code; | |
46 _decode_offset = parent->_sender_decode_offset; | |
47 _objects = parent->_objects; | |
48 decode_body(); | |
49 } | |
50 | |
51 | |
52 void ScopeDesc::decode_body() { | |
53 if (decode_offset() == DebugInformationRecorder::serialized_null) { | |
54 // This is a sentinel record, which is only relevant to | |
55 // approximate queries. Decode a reasonable frame. | |
56 _sender_decode_offset = DebugInformationRecorder::serialized_null; | |
57 _method = methodHandle(_code->method()); | |
58 _bci = InvocationEntryBci; | |
59 _locals_decode_offset = DebugInformationRecorder::serialized_null; | |
60 _expressions_decode_offset = DebugInformationRecorder::serialized_null; | |
61 _monitors_decode_offset = DebugInformationRecorder::serialized_null; | |
62 } else { | |
63 // decode header | |
64 DebugInfoReadStream* stream = stream_at(decode_offset()); | |
65 | |
66 _sender_decode_offset = stream->read_int(); | |
67 _method = methodHandle((methodOop) stream->read_oop()); | |
68 _bci = stream->read_bci(); | |
69 // decode offsets for body and sender | |
70 _locals_decode_offset = stream->read_int(); | |
71 _expressions_decode_offset = stream->read_int(); | |
72 _monitors_decode_offset = stream->read_int(); | |
73 } | |
74 } | |
75 | |
76 | |
77 GrowableArray<ScopeValue*>* ScopeDesc::decode_scope_values(int decode_offset) { | |
78 if (decode_offset == DebugInformationRecorder::serialized_null) return NULL; | |
79 DebugInfoReadStream* stream = stream_at(decode_offset); | |
80 int length = stream->read_int(); | |
81 GrowableArray<ScopeValue*>* result = new GrowableArray<ScopeValue*> (length); | |
82 for (int index = 0; index < length; index++) { | |
83 result->push(ScopeValue::read_from(stream)); | |
84 } | |
85 return result; | |
86 } | |
87 | |
88 GrowableArray<ScopeValue*>* ScopeDesc::decode_object_values(int decode_offset) { | |
89 if (decode_offset == DebugInformationRecorder::serialized_null) return NULL; | |
90 GrowableArray<ScopeValue*>* result = new GrowableArray<ScopeValue*>(); | |
91 DebugInfoReadStream* stream = new DebugInfoReadStream(_code, decode_offset, result); | |
92 int length = stream->read_int(); | |
93 for (int index = 0; index < length; index++) { | |
44
52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
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94 // Objects values are pushed to 'result' array during read so that |
52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
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95 // object's fields could reference it (OBJECT_ID_CODE). |
52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
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96 (void)ScopeValue::read_from(stream); |
0 | 97 } |
98 assert(result->length() == length, "inconsistent debug information"); | |
99 return result; | |
100 } | |
101 | |
102 | |
103 GrowableArray<MonitorValue*>* ScopeDesc::decode_monitor_values(int decode_offset) { | |
104 if (decode_offset == DebugInformationRecorder::serialized_null) return NULL; | |
105 DebugInfoReadStream* stream = stream_at(decode_offset); | |
106 int length = stream->read_int(); | |
107 GrowableArray<MonitorValue*>* result = new GrowableArray<MonitorValue*> (length); | |
108 for (int index = 0; index < length; index++) { | |
109 result->push(new MonitorValue(stream)); | |
110 } | |
111 return result; | |
112 } | |
113 | |
114 DebugInfoReadStream* ScopeDesc::stream_at(int decode_offset) const { | |
115 return new DebugInfoReadStream(_code, decode_offset, _objects); | |
116 } | |
117 | |
118 GrowableArray<ScopeValue*>* ScopeDesc::locals() { | |
119 return decode_scope_values(_locals_decode_offset); | |
120 } | |
121 | |
122 GrowableArray<ScopeValue*>* ScopeDesc::expressions() { | |
123 return decode_scope_values(_expressions_decode_offset); | |
124 } | |
125 | |
126 GrowableArray<MonitorValue*>* ScopeDesc::monitors() { | |
127 return decode_monitor_values(_monitors_decode_offset); | |
128 } | |
129 | |
130 GrowableArray<ScopeValue*>* ScopeDesc::objects() { | |
131 return _objects; | |
132 } | |
133 | |
134 bool ScopeDesc::is_top() const { | |
135 return _sender_decode_offset == DebugInformationRecorder::serialized_null; | |
136 } | |
137 | |
138 ScopeDesc* ScopeDesc::sender() const { | |
139 if (is_top()) return NULL; | |
140 return new ScopeDesc(this); | |
141 } | |
142 | |
143 | |
144 #ifndef PRODUCT | |
145 | |
146 void ScopeDesc::print_value_on(outputStream* st) const { | |
147 tty->print(" "); | |
148 method()()->print_short_name(st); | |
149 int lineno = method()->line_number_from_bci(bci()); | |
150 if (lineno != -1) { | |
151 st->print_cr("@%d (line %d)", bci(), lineno); | |
152 } else { | |
153 st->print_cr("@%d", bci()); | |
154 } | |
155 } | |
156 | |
157 void ScopeDesc::print_on(outputStream* st) const { | |
158 print_on(st, NULL); | |
159 } | |
160 | |
161 void ScopeDesc::print_on(outputStream* st, PcDesc* pd) const { | |
162 // header | |
163 if (pd != NULL) { | |
164 tty->print_cr("ScopeDesc(pc=" PTR_FORMAT " offset=%x):", pd->real_pc(_code), pd->pc_offset()); | |
165 } | |
166 | |
167 print_value_on(st); | |
168 // decode offsets | |
169 if (WizardMode) { | |
170 st->print("ScopeDesc[%d]@" PTR_FORMAT " ", _decode_offset, _code->instructions_begin()); | |
171 st->print_cr(" offset: %d", _decode_offset); | |
172 st->print_cr(" bci: %d", bci()); | |
173 st->print_cr(" locals: %d", _locals_decode_offset); | |
174 st->print_cr(" stack: %d", _expressions_decode_offset); | |
175 st->print_cr(" monitor: %d", _monitors_decode_offset); | |
176 st->print_cr(" sender: %d", _sender_decode_offset); | |
177 } | |
178 // locals | |
179 { GrowableArray<ScopeValue*>* l = ((ScopeDesc*) this)->locals(); | |
180 if (l != NULL) { | |
181 tty->print_cr(" Locals"); | |
182 for (int index = 0; index < l->length(); index++) { | |
183 st->print(" - l%d: ", index); | |
184 l->at(index)->print_on(st); | |
185 st->cr(); | |
186 } | |
187 } | |
188 } | |
189 // expressions | |
190 { GrowableArray<ScopeValue*>* l = ((ScopeDesc*) this)->expressions(); | |
191 if (l != NULL) { | |
192 st->print_cr(" Expression stack"); | |
193 for (int index = 0; index < l->length(); index++) { | |
194 st->print(" - @%d: ", index); | |
195 l->at(index)->print_on(st); | |
196 st->cr(); | |
197 } | |
198 } | |
199 } | |
200 // monitors | |
201 { GrowableArray<MonitorValue*>* l = ((ScopeDesc*) this)->monitors(); | |
202 if (l != NULL) { | |
203 st->print_cr(" Monitor stack"); | |
204 for (int index = 0; index < l->length(); index++) { | |
205 st->print(" - @%d: ", index); | |
206 l->at(index)->print_on(st); | |
207 st->cr(); | |
208 } | |
209 } | |
210 } | |
211 | |
212 #ifdef COMPILER2 | |
213 if (DoEscapeAnalysis && is_top() && _objects != NULL) { | |
214 tty->print_cr("Objects"); | |
215 for (int i = 0; i < _objects->length(); i++) { | |
216 ObjectValue* sv = (ObjectValue*) _objects->at(i); | |
217 tty->print(" - %d: ", sv->id()); | |
218 sv->print_fields_on(tty); | |
219 tty->cr(); | |
220 } | |
221 } | |
222 #endif // COMPILER2 | |
223 } | |
224 | |
225 #endif | |
226 | |
227 void ScopeDesc::verify() { | |
228 ResourceMark rm; | |
229 guarantee(method()->is_method(), "type check"); | |
230 | |
231 // check if we have any illegal elements on the expression stack | |
232 { GrowableArray<ScopeValue*>* l = expressions(); | |
233 if (l != NULL) { | |
234 for (int index = 0; index < l->length(); index++) { | |
235 //guarantee(!l->at(index)->is_illegal(), "expression element cannot be illegal"); | |
236 } | |
237 } | |
238 } | |
239 } |