debugInfo.cpp revision 1472:c18cbe5936b8
1/* 2 * Copyright (c) 1997, 2008, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25# include "incls/_precompiled.incl" 26# include "incls/_debugInfo.cpp.incl" 27 28// Comstructors 29 30DebugInfoWriteStream::DebugInfoWriteStream(DebugInformationRecorder* recorder, int initial_size) 31: CompressedWriteStream(initial_size) { 32 _recorder = recorder; 33} 34 35// Serializing oops 36 37void DebugInfoWriteStream::write_handle(jobject h) { 38 write_int(recorder()->oop_recorder()->find_index(h)); 39} 40 41ScopeValue* DebugInfoReadStream::read_object_value() { 42 int id = read_int(); 43#ifdef ASSERT 44 assert(_obj_pool != NULL, "object pool does not exist"); 45 for (int i = _obj_pool->length() - 1; i >= 0; i--) { 46 assert(((ObjectValue*) _obj_pool->at(i))->id() != id, "should not be read twice"); 47 } 48#endif 49 ObjectValue* result = new ObjectValue(id); 50 // Cache the object since an object field could reference it. 51 _obj_pool->push(result); 52 result->read_object(this); 53 return result; 54} 55 56ScopeValue* DebugInfoReadStream::get_cached_object() { 57 int id = read_int(); 58 assert(_obj_pool != NULL, "object pool does not exist"); 59 for (int i = _obj_pool->length() - 1; i >= 0; i--) { 60 ObjectValue* ov = (ObjectValue*) _obj_pool->at(i); 61 if (ov->id() == id) { 62 return ov; 63 } 64 } 65 ShouldNotReachHere(); 66 return NULL; 67} 68 69// Serializing scope values 70 71enum { LOCATION_CODE = 0, CONSTANT_INT_CODE = 1, CONSTANT_OOP_CODE = 2, 72 CONSTANT_LONG_CODE = 3, CONSTANT_DOUBLE_CODE = 4, 73 OBJECT_CODE = 5, OBJECT_ID_CODE = 6 }; 74 75ScopeValue* ScopeValue::read_from(DebugInfoReadStream* stream) { 76 ScopeValue* result = NULL; 77 switch(stream->read_int()) { 78 case LOCATION_CODE: result = new LocationValue(stream); break; 79 case CONSTANT_INT_CODE: result = new ConstantIntValue(stream); break; 80 case CONSTANT_OOP_CODE: result = new ConstantOopReadValue(stream); break; 81 case CONSTANT_LONG_CODE: result = new ConstantLongValue(stream); break; 82 case CONSTANT_DOUBLE_CODE: result = new ConstantDoubleValue(stream); break; 83 case OBJECT_CODE: result = stream->read_object_value(); break; 84 case OBJECT_ID_CODE: result = stream->get_cached_object(); break; 85 default: ShouldNotReachHere(); 86 } 87 return result; 88} 89 90// LocationValue 91 92LocationValue::LocationValue(DebugInfoReadStream* stream) { 93 _location = Location(stream); 94} 95 96void LocationValue::write_on(DebugInfoWriteStream* stream) { 97 stream->write_int(LOCATION_CODE); 98 location().write_on(stream); 99} 100 101void LocationValue::print_on(outputStream* st) const { 102 location().print_on(st); 103} 104 105// ObjectValue 106 107void ObjectValue::read_object(DebugInfoReadStream* stream) { 108 _klass = read_from(stream); 109 assert(_klass->is_constant_oop(), "should be constant klass oop"); 110 int length = stream->read_int(); 111 for (int i = 0; i < length; i++) { 112 ScopeValue* val = read_from(stream); 113 _field_values.append(val); 114 } 115} 116 117void ObjectValue::write_on(DebugInfoWriteStream* stream) { 118 if (_visited) { 119 stream->write_int(OBJECT_ID_CODE); 120 stream->write_int(_id); 121 } else { 122 _visited = true; 123 stream->write_int(OBJECT_CODE); 124 stream->write_int(_id); 125 _klass->write_on(stream); 126 int length = _field_values.length(); 127 stream->write_int(length); 128 for (int i = 0; i < length; i++) { 129 _field_values.at(i)->write_on(stream); 130 } 131 } 132} 133 134void ObjectValue::print_on(outputStream* st) const { 135 st->print("obj[%d]", _id); 136} 137 138void ObjectValue::print_fields_on(outputStream* st) const { 139#ifndef PRODUCT 140 if (_field_values.length() > 0) { 141 _field_values.at(0)->print_on(st); 142 } 143 for (int i = 1; i < _field_values.length(); i++) { 144 st->print(", "); 145 _field_values.at(i)->print_on(st); 146 } 147#endif 148} 149 150// ConstantIntValue 151 152ConstantIntValue::ConstantIntValue(DebugInfoReadStream* stream) { 153 _value = stream->read_signed_int(); 154} 155 156void ConstantIntValue::write_on(DebugInfoWriteStream* stream) { 157 stream->write_int(CONSTANT_INT_CODE); 158 stream->write_signed_int(value()); 159} 160 161void ConstantIntValue::print_on(outputStream* st) const { 162 st->print("%d", value()); 163} 164 165// ConstantLongValue 166 167ConstantLongValue::ConstantLongValue(DebugInfoReadStream* stream) { 168 _value = stream->read_long(); 169} 170 171void ConstantLongValue::write_on(DebugInfoWriteStream* stream) { 172 stream->write_int(CONSTANT_LONG_CODE); 173 stream->write_long(value()); 174} 175 176void ConstantLongValue::print_on(outputStream* st) const { 177 st->print(INT64_FORMAT, value()); 178} 179 180// ConstantDoubleValue 181 182ConstantDoubleValue::ConstantDoubleValue(DebugInfoReadStream* stream) { 183 _value = stream->read_double(); 184} 185 186void ConstantDoubleValue::write_on(DebugInfoWriteStream* stream) { 187 stream->write_int(CONSTANT_DOUBLE_CODE); 188 stream->write_double(value()); 189} 190 191void ConstantDoubleValue::print_on(outputStream* st) const { 192 st->print("%f", value()); 193} 194 195// ConstantOopWriteValue 196 197void ConstantOopWriteValue::write_on(DebugInfoWriteStream* stream) { 198 stream->write_int(CONSTANT_OOP_CODE); 199 stream->write_handle(value()); 200} 201 202void ConstantOopWriteValue::print_on(outputStream* st) const { 203 JNIHandles::resolve(value())->print_value_on(st); 204} 205 206 207// ConstantOopReadValue 208 209ConstantOopReadValue::ConstantOopReadValue(DebugInfoReadStream* stream) { 210 _value = Handle(stream->read_oop()); 211} 212 213void ConstantOopReadValue::write_on(DebugInfoWriteStream* stream) { 214 ShouldNotReachHere(); 215} 216 217void ConstantOopReadValue::print_on(outputStream* st) const { 218 value()()->print_value_on(st); 219} 220 221 222// MonitorValue 223 224MonitorValue::MonitorValue(ScopeValue* owner, Location basic_lock, bool eliminated) { 225 _owner = owner; 226 _basic_lock = basic_lock; 227 _eliminated = eliminated; 228} 229 230MonitorValue::MonitorValue(DebugInfoReadStream* stream) { 231 _basic_lock = Location(stream); 232 _owner = ScopeValue::read_from(stream); 233 _eliminated = (stream->read_bool() != 0); 234} 235 236void MonitorValue::write_on(DebugInfoWriteStream* stream) { 237 _basic_lock.write_on(stream); 238 _owner->write_on(stream); 239 stream->write_bool(_eliminated); 240} 241 242#ifndef PRODUCT 243void MonitorValue::print_on(outputStream* st) const { 244 st->print("monitor{"); 245 owner()->print_on(st); 246 st->print(","); 247 basic_lock().print_on(st); 248 st->print("}"); 249 if (_eliminated) { 250 st->print(" (eliminated)"); 251 } 252} 253#endif 254