Mercurial > hg > graal-jvmci-8
comparison src/share/vm/code/scopeDesc.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 52fed2ec0afb |
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-1:000000000000 | 0:a61af66fc99e |
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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 # 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++) { | |
94 result->push(ScopeValue::read_from(stream)); | |
95 } | |
96 assert(result->length() == length, "inconsistent debug information"); | |
97 return result; | |
98 } | |
99 | |
100 | |
101 GrowableArray<MonitorValue*>* ScopeDesc::decode_monitor_values(int decode_offset) { | |
102 if (decode_offset == DebugInformationRecorder::serialized_null) return NULL; | |
103 DebugInfoReadStream* stream = stream_at(decode_offset); | |
104 int length = stream->read_int(); | |
105 GrowableArray<MonitorValue*>* result = new GrowableArray<MonitorValue*> (length); | |
106 for (int index = 0; index < length; index++) { | |
107 result->push(new MonitorValue(stream)); | |
108 } | |
109 return result; | |
110 } | |
111 | |
112 DebugInfoReadStream* ScopeDesc::stream_at(int decode_offset) const { | |
113 return new DebugInfoReadStream(_code, decode_offset, _objects); | |
114 } | |
115 | |
116 GrowableArray<ScopeValue*>* ScopeDesc::locals() { | |
117 return decode_scope_values(_locals_decode_offset); | |
118 } | |
119 | |
120 GrowableArray<ScopeValue*>* ScopeDesc::expressions() { | |
121 return decode_scope_values(_expressions_decode_offset); | |
122 } | |
123 | |
124 GrowableArray<MonitorValue*>* ScopeDesc::monitors() { | |
125 return decode_monitor_values(_monitors_decode_offset); | |
126 } | |
127 | |
128 GrowableArray<ScopeValue*>* ScopeDesc::objects() { | |
129 return _objects; | |
130 } | |
131 | |
132 bool ScopeDesc::is_top() const { | |
133 return _sender_decode_offset == DebugInformationRecorder::serialized_null; | |
134 } | |
135 | |
136 ScopeDesc* ScopeDesc::sender() const { | |
137 if (is_top()) return NULL; | |
138 return new ScopeDesc(this); | |
139 } | |
140 | |
141 | |
142 #ifndef PRODUCT | |
143 | |
144 void ScopeDesc::print_value_on(outputStream* st) const { | |
145 tty->print(" "); | |
146 method()()->print_short_name(st); | |
147 int lineno = method()->line_number_from_bci(bci()); | |
148 if (lineno != -1) { | |
149 st->print_cr("@%d (line %d)", bci(), lineno); | |
150 } else { | |
151 st->print_cr("@%d", bci()); | |
152 } | |
153 } | |
154 | |
155 void ScopeDesc::print_on(outputStream* st) const { | |
156 print_on(st, NULL); | |
157 } | |
158 | |
159 void ScopeDesc::print_on(outputStream* st, PcDesc* pd) const { | |
160 // header | |
161 if (pd != NULL) { | |
162 tty->print_cr("ScopeDesc(pc=" PTR_FORMAT " offset=%x):", pd->real_pc(_code), pd->pc_offset()); | |
163 } | |
164 | |
165 print_value_on(st); | |
166 // decode offsets | |
167 if (WizardMode) { | |
168 st->print("ScopeDesc[%d]@" PTR_FORMAT " ", _decode_offset, _code->instructions_begin()); | |
169 st->print_cr(" offset: %d", _decode_offset); | |
170 st->print_cr(" bci: %d", bci()); | |
171 st->print_cr(" locals: %d", _locals_decode_offset); | |
172 st->print_cr(" stack: %d", _expressions_decode_offset); | |
173 st->print_cr(" monitor: %d", _monitors_decode_offset); | |
174 st->print_cr(" sender: %d", _sender_decode_offset); | |
175 } | |
176 // locals | |
177 { GrowableArray<ScopeValue*>* l = ((ScopeDesc*) this)->locals(); | |
178 if (l != NULL) { | |
179 tty->print_cr(" Locals"); | |
180 for (int index = 0; index < l->length(); index++) { | |
181 st->print(" - l%d: ", index); | |
182 l->at(index)->print_on(st); | |
183 st->cr(); | |
184 } | |
185 } | |
186 } | |
187 // expressions | |
188 { GrowableArray<ScopeValue*>* l = ((ScopeDesc*) this)->expressions(); | |
189 if (l != NULL) { | |
190 st->print_cr(" Expression stack"); | |
191 for (int index = 0; index < l->length(); index++) { | |
192 st->print(" - @%d: ", index); | |
193 l->at(index)->print_on(st); | |
194 st->cr(); | |
195 } | |
196 } | |
197 } | |
198 // monitors | |
199 { GrowableArray<MonitorValue*>* l = ((ScopeDesc*) this)->monitors(); | |
200 if (l != NULL) { | |
201 st->print_cr(" Monitor stack"); | |
202 for (int index = 0; index < l->length(); index++) { | |
203 st->print(" - @%d: ", index); | |
204 l->at(index)->print_on(st); | |
205 st->cr(); | |
206 } | |
207 } | |
208 } | |
209 | |
210 #ifdef COMPILER2 | |
211 if (DoEscapeAnalysis && is_top() && _objects != NULL) { | |
212 tty->print_cr("Objects"); | |
213 for (int i = 0; i < _objects->length(); i++) { | |
214 ObjectValue* sv = (ObjectValue*) _objects->at(i); | |
215 tty->print(" - %d: ", sv->id()); | |
216 sv->print_fields_on(tty); | |
217 tty->cr(); | |
218 } | |
219 } | |
220 #endif // COMPILER2 | |
221 } | |
222 | |
223 #endif | |
224 | |
225 void ScopeDesc::verify() { | |
226 ResourceMark rm; | |
227 guarantee(method()->is_method(), "type check"); | |
228 | |
229 // check if we have any illegal elements on the expression stack | |
230 { GrowableArray<ScopeValue*>* l = expressions(); | |
231 if (l != NULL) { | |
232 for (int index = 0; index < l->length(); index++) { | |
233 //guarantee(!l->at(index)->is_illegal(), "expression element cannot be illegal"); | |
234 } | |
235 } | |
236 } | |
237 } |