Mercurial > hg > graal-compiler
annotate src/share/vm/code/scopeDesc.cpp @ 1722:effb55808a18
Merge
author | johnc |
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date | Wed, 18 Aug 2010 17:44:33 -0400 |
parents | c18cbe5936b8 |
children | 3e8fbc61cee8 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2009, 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 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_scopeDesc.cpp.incl" | |
27 | |
28 | |
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29 ScopeDesc::ScopeDesc(const nmethod* code, int decode_offset, int obj_decode_offset, bool reexecute, bool return_oop) { |
0 | 30 _code = code; |
31 _decode_offset = decode_offset; | |
32 _objects = decode_object_values(obj_decode_offset); | |
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33 _reexecute = reexecute; |
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34 _return_oop = return_oop; |
0 | 35 decode_body(); |
36 } | |
37 | |
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38 ScopeDesc::ScopeDesc(const nmethod* code, int decode_offset, bool reexecute, bool return_oop) { |
0 | 39 _code = code; |
40 _decode_offset = decode_offset; | |
41 _objects = decode_object_values(DebugInformationRecorder::serialized_null); | |
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42 _reexecute = reexecute; |
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43 _return_oop = return_oop; |
0 | 44 decode_body(); |
45 } | |
46 | |
47 | |
48 ScopeDesc::ScopeDesc(const ScopeDesc* parent) { | |
49 _code = parent->_code; | |
50 _decode_offset = parent->_sender_decode_offset; | |
51 _objects = parent->_objects; | |
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52 _reexecute = false; //reexecute only applies to the first scope |
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53 _return_oop = false; |
0 | 54 decode_body(); |
55 } | |
56 | |
57 | |
58 void ScopeDesc::decode_body() { | |
59 if (decode_offset() == DebugInformationRecorder::serialized_null) { | |
60 // This is a sentinel record, which is only relevant to | |
61 // approximate queries. Decode a reasonable frame. | |
62 _sender_decode_offset = DebugInformationRecorder::serialized_null; | |
63 _method = methodHandle(_code->method()); | |
64 _bci = InvocationEntryBci; | |
65 _locals_decode_offset = DebugInformationRecorder::serialized_null; | |
66 _expressions_decode_offset = DebugInformationRecorder::serialized_null; | |
67 _monitors_decode_offset = DebugInformationRecorder::serialized_null; | |
68 } else { | |
69 // decode header | |
70 DebugInfoReadStream* stream = stream_at(decode_offset()); | |
71 | |
72 _sender_decode_offset = stream->read_int(); | |
73 _method = methodHandle((methodOop) stream->read_oop()); | |
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74 _bci = stream->read_bci(); |
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75 |
0 | 76 // decode offsets for body and sender |
77 _locals_decode_offset = stream->read_int(); | |
78 _expressions_decode_offset = stream->read_int(); | |
79 _monitors_decode_offset = stream->read_int(); | |
80 } | |
81 } | |
82 | |
83 | |
84 GrowableArray<ScopeValue*>* ScopeDesc::decode_scope_values(int decode_offset) { | |
85 if (decode_offset == DebugInformationRecorder::serialized_null) return NULL; | |
86 DebugInfoReadStream* stream = stream_at(decode_offset); | |
87 int length = stream->read_int(); | |
88 GrowableArray<ScopeValue*>* result = new GrowableArray<ScopeValue*> (length); | |
89 for (int index = 0; index < length; index++) { | |
90 result->push(ScopeValue::read_from(stream)); | |
91 } | |
92 return result; | |
93 } | |
94 | |
95 GrowableArray<ScopeValue*>* ScopeDesc::decode_object_values(int decode_offset) { | |
96 if (decode_offset == DebugInformationRecorder::serialized_null) return NULL; | |
97 GrowableArray<ScopeValue*>* result = new GrowableArray<ScopeValue*>(); | |
98 DebugInfoReadStream* stream = new DebugInfoReadStream(_code, decode_offset, result); | |
99 int length = stream->read_int(); | |
100 for (int index = 0; index < length; index++) { | |
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101 // Objects values are pushed to 'result' array during read so that |
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102 // object's fields could reference it (OBJECT_ID_CODE). |
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103 (void)ScopeValue::read_from(stream); |
0 | 104 } |
105 assert(result->length() == length, "inconsistent debug information"); | |
106 return result; | |
107 } | |
108 | |
109 | |
110 GrowableArray<MonitorValue*>* ScopeDesc::decode_monitor_values(int decode_offset) { | |
111 if (decode_offset == DebugInformationRecorder::serialized_null) return NULL; | |
112 DebugInfoReadStream* stream = stream_at(decode_offset); | |
113 int length = stream->read_int(); | |
114 GrowableArray<MonitorValue*>* result = new GrowableArray<MonitorValue*> (length); | |
115 for (int index = 0; index < length; index++) { | |
116 result->push(new MonitorValue(stream)); | |
117 } | |
118 return result; | |
119 } | |
120 | |
121 DebugInfoReadStream* ScopeDesc::stream_at(int decode_offset) const { | |
122 return new DebugInfoReadStream(_code, decode_offset, _objects); | |
123 } | |
124 | |
125 GrowableArray<ScopeValue*>* ScopeDesc::locals() { | |
126 return decode_scope_values(_locals_decode_offset); | |
127 } | |
128 | |
129 GrowableArray<ScopeValue*>* ScopeDesc::expressions() { | |
130 return decode_scope_values(_expressions_decode_offset); | |
131 } | |
132 | |
133 GrowableArray<MonitorValue*>* ScopeDesc::monitors() { | |
134 return decode_monitor_values(_monitors_decode_offset); | |
135 } | |
136 | |
137 GrowableArray<ScopeValue*>* ScopeDesc::objects() { | |
138 return _objects; | |
139 } | |
140 | |
141 bool ScopeDesc::is_top() const { | |
142 return _sender_decode_offset == DebugInformationRecorder::serialized_null; | |
143 } | |
144 | |
145 ScopeDesc* ScopeDesc::sender() const { | |
146 if (is_top()) return NULL; | |
147 return new ScopeDesc(this); | |
148 } | |
149 | |
150 | |
151 #ifndef PRODUCT | |
152 | |
153 void ScopeDesc::print_value_on(outputStream* st) const { | |
154 tty->print(" "); | |
155 method()()->print_short_name(st); | |
156 int lineno = method()->line_number_from_bci(bci()); | |
157 if (lineno != -1) { | |
158 st->print_cr("@%d (line %d)", bci(), lineno); | |
159 } else { | |
160 st->print_cr("@%d", bci()); | |
161 } | |
162 } | |
163 | |
164 void ScopeDesc::print_on(outputStream* st) const { | |
165 print_on(st, NULL); | |
166 } | |
167 | |
168 void ScopeDesc::print_on(outputStream* st, PcDesc* pd) const { | |
169 // header | |
170 if (pd != NULL) { | |
171 tty->print_cr("ScopeDesc(pc=" PTR_FORMAT " offset=%x):", pd->real_pc(_code), pd->pc_offset()); | |
172 } | |
173 | |
174 print_value_on(st); | |
175 // decode offsets | |
176 if (WizardMode) { | |
177 st->print("ScopeDesc[%d]@" PTR_FORMAT " ", _decode_offset, _code->instructions_begin()); | |
178 st->print_cr(" offset: %d", _decode_offset); | |
179 st->print_cr(" bci: %d", bci()); | |
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180 st->print_cr(" reexecute: %s", should_reexecute() ? "true" : "false"); |
0 | 181 st->print_cr(" locals: %d", _locals_decode_offset); |
182 st->print_cr(" stack: %d", _expressions_decode_offset); | |
183 st->print_cr(" monitor: %d", _monitors_decode_offset); | |
184 st->print_cr(" sender: %d", _sender_decode_offset); | |
185 } | |
186 // locals | |
187 { GrowableArray<ScopeValue*>* l = ((ScopeDesc*) this)->locals(); | |
188 if (l != NULL) { | |
189 tty->print_cr(" Locals"); | |
190 for (int index = 0; index < l->length(); index++) { | |
191 st->print(" - l%d: ", index); | |
192 l->at(index)->print_on(st); | |
193 st->cr(); | |
194 } | |
195 } | |
196 } | |
197 // expressions | |
198 { GrowableArray<ScopeValue*>* l = ((ScopeDesc*) this)->expressions(); | |
199 if (l != NULL) { | |
200 st->print_cr(" Expression stack"); | |
201 for (int index = 0; index < l->length(); index++) { | |
202 st->print(" - @%d: ", index); | |
203 l->at(index)->print_on(st); | |
204 st->cr(); | |
205 } | |
206 } | |
207 } | |
208 // monitors | |
209 { GrowableArray<MonitorValue*>* l = ((ScopeDesc*) this)->monitors(); | |
210 if (l != NULL) { | |
211 st->print_cr(" Monitor stack"); | |
212 for (int index = 0; index < l->length(); index++) { | |
213 st->print(" - @%d: ", index); | |
214 l->at(index)->print_on(st); | |
215 st->cr(); | |
216 } | |
217 } | |
218 } | |
219 | |
220 #ifdef COMPILER2 | |
221 if (DoEscapeAnalysis && is_top() && _objects != NULL) { | |
222 tty->print_cr("Objects"); | |
223 for (int i = 0; i < _objects->length(); i++) { | |
224 ObjectValue* sv = (ObjectValue*) _objects->at(i); | |
225 tty->print(" - %d: ", sv->id()); | |
226 sv->print_fields_on(tty); | |
227 tty->cr(); | |
228 } | |
229 } | |
230 #endif // COMPILER2 | |
231 } | |
232 | |
233 #endif | |
234 | |
235 void ScopeDesc::verify() { | |
236 ResourceMark rm; | |
237 guarantee(method()->is_method(), "type check"); | |
238 | |
239 // check if we have any illegal elements on the expression stack | |
240 { GrowableArray<ScopeValue*>* l = expressions(); | |
241 if (l != NULL) { | |
242 for (int index = 0; index < l->length(); index++) { | |
243 //guarantee(!l->at(index)->is_illegal(), "expression element cannot be illegal"); | |
244 } | |
245 } | |
246 } | |
247 } |