Mercurial > hg > graal-compiler
annotate src/share/vm/code/debugInfo.cpp @ 3992:d1bdeef3e3e2
7098282: G1: assert(interval >= 0) failed: Sanity check, referencePolicy.cpp: 76
Summary: There is a race between one thread successfully forwarding and copying the klass mirror for the SoftReference class (including the static master clock) and another thread attempting to use the master clock while attempting to discover a soft reference object. Maintain a shadow copy of the soft reference master clock and use the shadow during reference discovery and reference processing.
Reviewed-by: tonyp, brutisso, ysr
| author | johnc |
|---|---|
| date | Wed, 12 Oct 2011 10:25:51 -0700 |
| parents | f95d63e2154a |
| children | da91efe96a93 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 1997, 2010, 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/debugInfo.hpp" | |
| 27 #include "code/debugInfoRec.hpp" | |
| 28 #include "code/nmethod.hpp" | |
| 29 #include "runtime/handles.inline.hpp" | |
| 0 | 30 |
| 31 // Comstructors | |
| 32 | |
| 33 DebugInfoWriteStream::DebugInfoWriteStream(DebugInformationRecorder* recorder, int initial_size) | |
| 34 : CompressedWriteStream(initial_size) { | |
| 35 _recorder = recorder; | |
| 36 } | |
| 37 | |
| 38 // Serializing oops | |
| 39 | |
| 40 void DebugInfoWriteStream::write_handle(jobject h) { | |
| 41 write_int(recorder()->oop_recorder()->find_index(h)); | |
| 42 } | |
| 43 | |
| 44 ScopeValue* DebugInfoReadStream::read_object_value() { | |
| 45 int id = read_int(); | |
| 46 #ifdef ASSERT | |
| 47 assert(_obj_pool != NULL, "object pool does not exist"); | |
| 48 for (int i = _obj_pool->length() - 1; i >= 0; i--) { | |
| 49 assert(((ObjectValue*) _obj_pool->at(i))->id() != id, "should not be read twice"); | |
| 50 } | |
| 51 #endif | |
| 52 ObjectValue* result = new ObjectValue(id); | |
|
44
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53 // Cache the object since an object field could reference it. |
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54 _obj_pool->push(result); |
| 0 | 55 result->read_object(this); |
| 56 return result; | |
| 57 } | |
| 58 | |
| 59 ScopeValue* DebugInfoReadStream::get_cached_object() { | |
| 60 int id = read_int(); | |
| 61 assert(_obj_pool != NULL, "object pool does not exist"); | |
| 62 for (int i = _obj_pool->length() - 1; i >= 0; i--) { | |
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63 ObjectValue* ov = (ObjectValue*) _obj_pool->at(i); |
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64 if (ov->id() == id) { |
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65 return ov; |
| 0 | 66 } |
| 67 } | |
| 68 ShouldNotReachHere(); | |
| 69 return NULL; | |
| 70 } | |
| 71 | |
| 72 // Serializing scope values | |
| 73 | |
| 74 enum { LOCATION_CODE = 0, CONSTANT_INT_CODE = 1, CONSTANT_OOP_CODE = 2, | |
| 75 CONSTANT_LONG_CODE = 3, CONSTANT_DOUBLE_CODE = 4, | |
| 76 OBJECT_CODE = 5, OBJECT_ID_CODE = 6 }; | |
| 77 | |
| 78 ScopeValue* ScopeValue::read_from(DebugInfoReadStream* stream) { | |
| 79 ScopeValue* result = NULL; | |
| 80 switch(stream->read_int()) { | |
| 81 case LOCATION_CODE: result = new LocationValue(stream); break; | |
| 82 case CONSTANT_INT_CODE: result = new ConstantIntValue(stream); break; | |
| 83 case CONSTANT_OOP_CODE: result = new ConstantOopReadValue(stream); break; | |
| 84 case CONSTANT_LONG_CODE: result = new ConstantLongValue(stream); break; | |
| 85 case CONSTANT_DOUBLE_CODE: result = new ConstantDoubleValue(stream); break; | |
| 86 case OBJECT_CODE: result = stream->read_object_value(); break; | |
| 87 case OBJECT_ID_CODE: result = stream->get_cached_object(); break; | |
| 88 default: ShouldNotReachHere(); | |
| 89 } | |
| 90 return result; | |
| 91 } | |
| 92 | |
| 93 // LocationValue | |
| 94 | |
| 95 LocationValue::LocationValue(DebugInfoReadStream* stream) { | |
| 96 _location = Location(stream); | |
| 97 } | |
| 98 | |
| 99 void LocationValue::write_on(DebugInfoWriteStream* stream) { | |
| 100 stream->write_int(LOCATION_CODE); | |
| 101 location().write_on(stream); | |
| 102 } | |
| 103 | |
| 104 void LocationValue::print_on(outputStream* st) const { | |
| 105 location().print_on(st); | |
| 106 } | |
| 107 | |
| 108 // ObjectValue | |
| 109 | |
| 110 void ObjectValue::read_object(DebugInfoReadStream* stream) { | |
| 111 _klass = read_from(stream); | |
| 112 assert(_klass->is_constant_oop(), "should be constant klass oop"); | |
| 113 int length = stream->read_int(); | |
| 114 for (int i = 0; i < length; i++) { | |
| 115 ScopeValue* val = read_from(stream); | |
| 116 _field_values.append(val); | |
| 117 } | |
| 118 } | |
| 119 | |
| 120 void ObjectValue::write_on(DebugInfoWriteStream* stream) { | |
| 121 if (_visited) { | |
| 122 stream->write_int(OBJECT_ID_CODE); | |
| 123 stream->write_int(_id); | |
| 124 } else { | |
| 125 _visited = true; | |
| 126 stream->write_int(OBJECT_CODE); | |
| 127 stream->write_int(_id); | |
| 128 _klass->write_on(stream); | |
| 129 int length = _field_values.length(); | |
| 130 stream->write_int(length); | |
| 131 for (int i = 0; i < length; i++) { | |
| 132 _field_values.at(i)->write_on(stream); | |
| 133 } | |
| 134 } | |
| 135 } | |
| 136 | |
| 137 void ObjectValue::print_on(outputStream* st) const { | |
| 138 st->print("obj[%d]", _id); | |
| 139 } | |
| 140 | |
| 141 void ObjectValue::print_fields_on(outputStream* st) const { | |
| 142 #ifndef PRODUCT | |
| 143 if (_field_values.length() > 0) { | |
| 144 _field_values.at(0)->print_on(st); | |
| 145 } | |
| 146 for (int i = 1; i < _field_values.length(); i++) { | |
| 147 st->print(", "); | |
| 148 _field_values.at(i)->print_on(st); | |
| 149 } | |
| 150 #endif | |
| 151 } | |
| 152 | |
| 153 // ConstantIntValue | |
| 154 | |
| 155 ConstantIntValue::ConstantIntValue(DebugInfoReadStream* stream) { | |
| 156 _value = stream->read_signed_int(); | |
| 157 } | |
| 158 | |
| 159 void ConstantIntValue::write_on(DebugInfoWriteStream* stream) { | |
| 160 stream->write_int(CONSTANT_INT_CODE); | |
| 161 stream->write_signed_int(value()); | |
| 162 } | |
| 163 | |
| 164 void ConstantIntValue::print_on(outputStream* st) const { | |
| 165 st->print("%d", value()); | |
| 166 } | |
| 167 | |
| 168 // ConstantLongValue | |
| 169 | |
| 170 ConstantLongValue::ConstantLongValue(DebugInfoReadStream* stream) { | |
| 171 _value = stream->read_long(); | |
| 172 } | |
| 173 | |
| 174 void ConstantLongValue::write_on(DebugInfoWriteStream* stream) { | |
| 175 stream->write_int(CONSTANT_LONG_CODE); | |
| 176 stream->write_long(value()); | |
| 177 } | |
| 178 | |
| 179 void ConstantLongValue::print_on(outputStream* st) const { | |
| 180 st->print(INT64_FORMAT, value()); | |
| 181 } | |
| 182 | |
| 183 // ConstantDoubleValue | |
| 184 | |
| 185 ConstantDoubleValue::ConstantDoubleValue(DebugInfoReadStream* stream) { | |
| 186 _value = stream->read_double(); | |
| 187 } | |
| 188 | |
| 189 void ConstantDoubleValue::write_on(DebugInfoWriteStream* stream) { | |
| 190 stream->write_int(CONSTANT_DOUBLE_CODE); | |
| 191 stream->write_double(value()); | |
| 192 } | |
| 193 | |
| 194 void ConstantDoubleValue::print_on(outputStream* st) const { | |
| 195 st->print("%f", value()); | |
| 196 } | |
| 197 | |
| 198 // ConstantOopWriteValue | |
| 199 | |
| 200 void ConstantOopWriteValue::write_on(DebugInfoWriteStream* stream) { | |
| 201 stream->write_int(CONSTANT_OOP_CODE); | |
| 202 stream->write_handle(value()); | |
| 203 } | |
| 204 | |
| 205 void ConstantOopWriteValue::print_on(outputStream* st) const { | |
| 206 JNIHandles::resolve(value())->print_value_on(st); | |
| 207 } | |
| 208 | |
| 209 | |
| 210 // ConstantOopReadValue | |
| 211 | |
| 212 ConstantOopReadValue::ConstantOopReadValue(DebugInfoReadStream* stream) { | |
| 213 _value = Handle(stream->read_oop()); | |
| 214 } | |
| 215 | |
| 216 void ConstantOopReadValue::write_on(DebugInfoWriteStream* stream) { | |
| 217 ShouldNotReachHere(); | |
| 218 } | |
| 219 | |
| 220 void ConstantOopReadValue::print_on(outputStream* st) const { | |
| 221 value()()->print_value_on(st); | |
| 222 } | |
| 223 | |
| 224 | |
| 225 // MonitorValue | |
| 226 | |
| 227 MonitorValue::MonitorValue(ScopeValue* owner, Location basic_lock, bool eliminated) { | |
| 228 _owner = owner; | |
| 229 _basic_lock = basic_lock; | |
| 230 _eliminated = eliminated; | |
| 231 } | |
| 232 | |
| 233 MonitorValue::MonitorValue(DebugInfoReadStream* stream) { | |
| 234 _basic_lock = Location(stream); | |
| 235 _owner = ScopeValue::read_from(stream); | |
| 236 _eliminated = (stream->read_bool() != 0); | |
| 237 } | |
| 238 | |
| 239 void MonitorValue::write_on(DebugInfoWriteStream* stream) { | |
| 240 _basic_lock.write_on(stream); | |
| 241 _owner->write_on(stream); | |
| 242 stream->write_bool(_eliminated); | |
| 243 } | |
| 244 | |
| 245 #ifndef PRODUCT | |
| 246 void MonitorValue::print_on(outputStream* st) const { | |
| 247 st->print("monitor{"); | |
| 248 owner()->print_on(st); | |
| 249 st->print(","); | |
| 250 basic_lock().print_on(st); | |
| 251 st->print("}"); | |
| 252 if (_eliminated) { | |
| 253 st->print(" (eliminated)"); | |
| 254 } | |
| 255 } | |
| 256 #endif |