Mercurial > hg > graal-jvmci-8
annotate src/share/vm/code/scopeDesc.cpp @ 931:72088be4b386
6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
Summary: use PcDesc to keep record of the reexecute bit instead of using DebugInfoStreams
Reviewed-by: kvn, never, twisti
| author | cfang |
|---|---|
| date | Thu, 20 Aug 2009 12:42:57 -0700 |
| parents | 9987d9d5eb0e |
| children | f70b0d9ab095 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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931
72088be4b386
6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
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changeset
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2 * Copyright 1997-2009 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 | |
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6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
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29 ScopeDesc::ScopeDesc(const nmethod* code, int decode_offset, int obj_decode_offset, bool reexecute) { |
| 0 | 30 _code = code; |
| 31 _decode_offset = decode_offset; | |
| 32 _objects = decode_object_values(obj_decode_offset); | |
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6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
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33 _reexecute = reexecute; |
| 0 | 34 decode_body(); |
| 35 } | |
| 36 | |
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6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
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37 ScopeDesc::ScopeDesc(const nmethod* code, int decode_offset, bool reexecute) { |
| 0 | 38 _code = code; |
| 39 _decode_offset = decode_offset; | |
| 40 _objects = decode_object_values(DebugInformationRecorder::serialized_null); | |
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6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
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41 _reexecute = reexecute; |
| 0 | 42 decode_body(); |
| 43 } | |
| 44 | |
| 45 | |
| 46 ScopeDesc::ScopeDesc(const ScopeDesc* parent) { | |
| 47 _code = parent->_code; | |
| 48 _decode_offset = parent->_sender_decode_offset; | |
| 49 _objects = parent->_objects; | |
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6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
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50 _reexecute = false; //reexecute only applies to the first scope |
| 0 | 51 decode_body(); |
| 52 } | |
| 53 | |
| 54 | |
| 55 void ScopeDesc::decode_body() { | |
| 56 if (decode_offset() == DebugInformationRecorder::serialized_null) { | |
| 57 // This is a sentinel record, which is only relevant to | |
| 58 // approximate queries. Decode a reasonable frame. | |
| 59 _sender_decode_offset = DebugInformationRecorder::serialized_null; | |
| 60 _method = methodHandle(_code->method()); | |
| 61 _bci = InvocationEntryBci; | |
| 62 _locals_decode_offset = DebugInformationRecorder::serialized_null; | |
| 63 _expressions_decode_offset = DebugInformationRecorder::serialized_null; | |
| 64 _monitors_decode_offset = DebugInformationRecorder::serialized_null; | |
| 65 } else { | |
| 66 // decode header | |
| 67 DebugInfoReadStream* stream = stream_at(decode_offset()); | |
| 68 | |
| 69 _sender_decode_offset = stream->read_int(); | |
| 70 _method = methodHandle((methodOop) stream->read_oop()); | |
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6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
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71 _bci = stream->read_bci(); |
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72 |
| 0 | 73 // decode offsets for body and sender |
| 74 _locals_decode_offset = stream->read_int(); | |
| 75 _expressions_decode_offset = stream->read_int(); | |
| 76 _monitors_decode_offset = stream->read_int(); | |
| 77 } | |
| 78 } | |
| 79 | |
| 80 | |
| 81 GrowableArray<ScopeValue*>* ScopeDesc::decode_scope_values(int decode_offset) { | |
| 82 if (decode_offset == DebugInformationRecorder::serialized_null) return NULL; | |
| 83 DebugInfoReadStream* stream = stream_at(decode_offset); | |
| 84 int length = stream->read_int(); | |
| 85 GrowableArray<ScopeValue*>* result = new GrowableArray<ScopeValue*> (length); | |
| 86 for (int index = 0; index < length; index++) { | |
| 87 result->push(ScopeValue::read_from(stream)); | |
| 88 } | |
| 89 return result; | |
| 90 } | |
| 91 | |
| 92 GrowableArray<ScopeValue*>* ScopeDesc::decode_object_values(int decode_offset) { | |
| 93 if (decode_offset == DebugInformationRecorder::serialized_null) return NULL; | |
| 94 GrowableArray<ScopeValue*>* result = new GrowableArray<ScopeValue*>(); | |
| 95 DebugInfoReadStream* stream = new DebugInfoReadStream(_code, decode_offset, result); | |
| 96 int length = stream->read_int(); | |
| 97 for (int index = 0; index < length; index++) { | |
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98 // Objects values are pushed to 'result' array during read so that |
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99 // object's fields could reference it (OBJECT_ID_CODE). |
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100 (void)ScopeValue::read_from(stream); |
| 0 | 101 } |
| 102 assert(result->length() == length, "inconsistent debug information"); | |
| 103 return result; | |
| 104 } | |
| 105 | |
| 106 | |
| 107 GrowableArray<MonitorValue*>* ScopeDesc::decode_monitor_values(int decode_offset) { | |
| 108 if (decode_offset == DebugInformationRecorder::serialized_null) return NULL; | |
| 109 DebugInfoReadStream* stream = stream_at(decode_offset); | |
| 110 int length = stream->read_int(); | |
| 111 GrowableArray<MonitorValue*>* result = new GrowableArray<MonitorValue*> (length); | |
| 112 for (int index = 0; index < length; index++) { | |
| 113 result->push(new MonitorValue(stream)); | |
| 114 } | |
| 115 return result; | |
| 116 } | |
| 117 | |
| 118 DebugInfoReadStream* ScopeDesc::stream_at(int decode_offset) const { | |
| 119 return new DebugInfoReadStream(_code, decode_offset, _objects); | |
| 120 } | |
| 121 | |
| 122 GrowableArray<ScopeValue*>* ScopeDesc::locals() { | |
| 123 return decode_scope_values(_locals_decode_offset); | |
| 124 } | |
| 125 | |
| 126 GrowableArray<ScopeValue*>* ScopeDesc::expressions() { | |
| 127 return decode_scope_values(_expressions_decode_offset); | |
| 128 } | |
| 129 | |
| 130 GrowableArray<MonitorValue*>* ScopeDesc::monitors() { | |
| 131 return decode_monitor_values(_monitors_decode_offset); | |
| 132 } | |
| 133 | |
| 134 GrowableArray<ScopeValue*>* ScopeDesc::objects() { | |
| 135 return _objects; | |
| 136 } | |
| 137 | |
| 138 bool ScopeDesc::is_top() const { | |
| 139 return _sender_decode_offset == DebugInformationRecorder::serialized_null; | |
| 140 } | |
| 141 | |
| 142 ScopeDesc* ScopeDesc::sender() const { | |
| 143 if (is_top()) return NULL; | |
| 144 return new ScopeDesc(this); | |
| 145 } | |
| 146 | |
| 147 | |
| 148 #ifndef PRODUCT | |
| 149 | |
| 150 void ScopeDesc::print_value_on(outputStream* st) const { | |
| 151 tty->print(" "); | |
| 152 method()()->print_short_name(st); | |
| 153 int lineno = method()->line_number_from_bci(bci()); | |
| 154 if (lineno != -1) { | |
| 155 st->print_cr("@%d (line %d)", bci(), lineno); | |
| 156 } else { | |
| 157 st->print_cr("@%d", bci()); | |
| 158 } | |
| 159 } | |
| 160 | |
| 161 void ScopeDesc::print_on(outputStream* st) const { | |
| 162 print_on(st, NULL); | |
| 163 } | |
| 164 | |
| 165 void ScopeDesc::print_on(outputStream* st, PcDesc* pd) const { | |
| 166 // header | |
| 167 if (pd != NULL) { | |
| 168 tty->print_cr("ScopeDesc(pc=" PTR_FORMAT " offset=%x):", pd->real_pc(_code), pd->pc_offset()); | |
| 169 } | |
| 170 | |
| 171 print_value_on(st); | |
| 172 // decode offsets | |
| 173 if (WizardMode) { | |
| 174 st->print("ScopeDesc[%d]@" PTR_FORMAT " ", _decode_offset, _code->instructions_begin()); | |
| 175 st->print_cr(" offset: %d", _decode_offset); | |
| 176 st->print_cr(" bci: %d", bci()); | |
|
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
196
diff
changeset
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177 st->print_cr(" reexecute: %s", should_reexecute() ? "true" : "false"); |
| 0 | 178 st->print_cr(" locals: %d", _locals_decode_offset); |
| 179 st->print_cr(" stack: %d", _expressions_decode_offset); | |
| 180 st->print_cr(" monitor: %d", _monitors_decode_offset); | |
| 181 st->print_cr(" sender: %d", _sender_decode_offset); | |
| 182 } | |
| 183 // locals | |
| 184 { GrowableArray<ScopeValue*>* l = ((ScopeDesc*) this)->locals(); | |
| 185 if (l != NULL) { | |
| 186 tty->print_cr(" Locals"); | |
| 187 for (int index = 0; index < l->length(); index++) { | |
| 188 st->print(" - l%d: ", index); | |
| 189 l->at(index)->print_on(st); | |
| 190 st->cr(); | |
| 191 } | |
| 192 } | |
| 193 } | |
| 194 // expressions | |
| 195 { GrowableArray<ScopeValue*>* l = ((ScopeDesc*) this)->expressions(); | |
| 196 if (l != NULL) { | |
| 197 st->print_cr(" Expression stack"); | |
| 198 for (int index = 0; index < l->length(); index++) { | |
| 199 st->print(" - @%d: ", index); | |
| 200 l->at(index)->print_on(st); | |
| 201 st->cr(); | |
| 202 } | |
| 203 } | |
| 204 } | |
| 205 // monitors | |
| 206 { GrowableArray<MonitorValue*>* l = ((ScopeDesc*) this)->monitors(); | |
| 207 if (l != NULL) { | |
| 208 st->print_cr(" Monitor stack"); | |
| 209 for (int index = 0; index < l->length(); index++) { | |
| 210 st->print(" - @%d: ", index); | |
| 211 l->at(index)->print_on(st); | |
| 212 st->cr(); | |
| 213 } | |
| 214 } | |
| 215 } | |
| 216 | |
| 217 #ifdef COMPILER2 | |
| 218 if (DoEscapeAnalysis && is_top() && _objects != NULL) { | |
| 219 tty->print_cr("Objects"); | |
| 220 for (int i = 0; i < _objects->length(); i++) { | |
| 221 ObjectValue* sv = (ObjectValue*) _objects->at(i); | |
| 222 tty->print(" - %d: ", sv->id()); | |
| 223 sv->print_fields_on(tty); | |
| 224 tty->cr(); | |
| 225 } | |
| 226 } | |
| 227 #endif // COMPILER2 | |
| 228 } | |
| 229 | |
| 230 #endif | |
| 231 | |
| 232 void ScopeDesc::verify() { | |
| 233 ResourceMark rm; | |
| 234 guarantee(method()->is_method(), "type check"); | |
| 235 | |
| 236 // check if we have any illegal elements on the expression stack | |
| 237 { GrowableArray<ScopeValue*>* l = expressions(); | |
| 238 if (l != NULL) { | |
| 239 for (int index = 0; index < l->length(); index++) { | |
| 240 //guarantee(!l->at(index)->is_illegal(), "expression element cannot be illegal"); | |
| 241 } | |
| 242 } | |
| 243 } | |
| 244 } |