debugInfo.cpp revision 3602:da91efe96a93
1/* 2 * Copyright (c) 1997, 2012, 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 "precompiled.hpp" 26#include "code/debugInfo.hpp" 27#include "code/debugInfoRec.hpp" 28#include "code/nmethod.hpp" 29#include "runtime/handles.inline.hpp" 30 31// Comstructors 32 33DebugInfoWriteStream::DebugInfoWriteStream(DebugInformationRecorder* recorder, int initial_size) 34: CompressedWriteStream(initial_size) { 35 _recorder = recorder; 36} 37 38// Serializing oops 39 40void DebugInfoWriteStream::write_handle(jobject h) { 41 write_int(recorder()->oop_recorder()->find_index(h)); 42} 43 44void DebugInfoWriteStream::write_metadata(Metadata* h) { 45 write_int(recorder()->oop_recorder()->find_index(h)); 46} 47 48ScopeValue* DebugInfoReadStream::read_object_value() { 49 int id = read_int(); 50#ifdef ASSERT 51 assert(_obj_pool != NULL, "object pool does not exist"); 52 for (int i = _obj_pool->length() - 1; i >= 0; i--) { 53 assert(((ObjectValue*) _obj_pool->at(i))->id() != id, "should not be read twice"); 54 } 55#endif 56 ObjectValue* result = new ObjectValue(id); 57 // Cache the object since an object field could reference it. 58 _obj_pool->push(result); 59 result->read_object(this); 60 return result; 61} 62 63ScopeValue* DebugInfoReadStream::get_cached_object() { 64 int id = read_int(); 65 assert(_obj_pool != NULL, "object pool does not exist"); 66 for (int i = _obj_pool->length() - 1; i >= 0; i--) { 67 ObjectValue* ov = (ObjectValue*) _obj_pool->at(i); 68 if (ov->id() == id) { 69 return ov; 70 } 71 } 72 ShouldNotReachHere(); 73 return NULL; 74} 75 76// Serializing scope values 77 78enum { LOCATION_CODE = 0, CONSTANT_INT_CODE = 1, CONSTANT_OOP_CODE = 2, 79 CONSTANT_LONG_CODE = 3, CONSTANT_DOUBLE_CODE = 4, 80 OBJECT_CODE = 5, OBJECT_ID_CODE = 6 }; 81 82ScopeValue* ScopeValue::read_from(DebugInfoReadStream* stream) { 83 ScopeValue* result = NULL; 84 switch(stream->read_int()) { 85 case LOCATION_CODE: result = new LocationValue(stream); break; 86 case CONSTANT_INT_CODE: result = new ConstantIntValue(stream); break; 87 case CONSTANT_OOP_CODE: result = new ConstantOopReadValue(stream); break; 88 case CONSTANT_LONG_CODE: result = new ConstantLongValue(stream); break; 89 case CONSTANT_DOUBLE_CODE: result = new ConstantDoubleValue(stream); break; 90 case OBJECT_CODE: result = stream->read_object_value(); break; 91 case OBJECT_ID_CODE: result = stream->get_cached_object(); break; 92 default: ShouldNotReachHere(); 93 } 94 return result; 95} 96 97// LocationValue 98 99LocationValue::LocationValue(DebugInfoReadStream* stream) { 100 _location = Location(stream); 101} 102 103void LocationValue::write_on(DebugInfoWriteStream* stream) { 104 stream->write_int(LOCATION_CODE); 105 location().write_on(stream); 106} 107 108void LocationValue::print_on(outputStream* st) const { 109 location().print_on(st); 110} 111 112// ObjectValue 113 114void ObjectValue::read_object(DebugInfoReadStream* stream) { 115 _klass = read_from(stream); 116 assert(_klass->is_constant_oop(), "should be constant java mirror oop"); 117 int length = stream->read_int(); 118 for (int i = 0; i < length; i++) { 119 ScopeValue* val = read_from(stream); 120 _field_values.append(val); 121 } 122} 123 124void ObjectValue::write_on(DebugInfoWriteStream* stream) { 125 if (_visited) { 126 stream->write_int(OBJECT_ID_CODE); 127 stream->write_int(_id); 128 } else { 129 _visited = true; 130 stream->write_int(OBJECT_CODE); 131 stream->write_int(_id); 132 _klass->write_on(stream); 133 int length = _field_values.length(); 134 stream->write_int(length); 135 for (int i = 0; i < length; i++) { 136 _field_values.at(i)->write_on(stream); 137 } 138 } 139} 140 141void ObjectValue::print_on(outputStream* st) const { 142 st->print("obj[%d]", _id); 143} 144 145void ObjectValue::print_fields_on(outputStream* st) const { 146#ifndef PRODUCT 147 if (_field_values.length() > 0) { 148 _field_values.at(0)->print_on(st); 149 } 150 for (int i = 1; i < _field_values.length(); i++) { 151 st->print(", "); 152 _field_values.at(i)->print_on(st); 153 } 154#endif 155} 156 157// ConstantIntValue 158 159ConstantIntValue::ConstantIntValue(DebugInfoReadStream* stream) { 160 _value = stream->read_signed_int(); 161} 162 163void ConstantIntValue::write_on(DebugInfoWriteStream* stream) { 164 stream->write_int(CONSTANT_INT_CODE); 165 stream->write_signed_int(value()); 166} 167 168void ConstantIntValue::print_on(outputStream* st) const { 169 st->print("%d", value()); 170} 171 172// ConstantLongValue 173 174ConstantLongValue::ConstantLongValue(DebugInfoReadStream* stream) { 175 _value = stream->read_long(); 176} 177 178void ConstantLongValue::write_on(DebugInfoWriteStream* stream) { 179 stream->write_int(CONSTANT_LONG_CODE); 180 stream->write_long(value()); 181} 182 183void ConstantLongValue::print_on(outputStream* st) const { 184 st->print(INT64_FORMAT, value()); 185} 186 187// ConstantDoubleValue 188 189ConstantDoubleValue::ConstantDoubleValue(DebugInfoReadStream* stream) { 190 _value = stream->read_double(); 191} 192 193void ConstantDoubleValue::write_on(DebugInfoWriteStream* stream) { 194 stream->write_int(CONSTANT_DOUBLE_CODE); 195 stream->write_double(value()); 196} 197 198void ConstantDoubleValue::print_on(outputStream* st) const { 199 st->print("%f", value()); 200} 201 202// ConstantOopWriteValue 203 204void ConstantOopWriteValue::write_on(DebugInfoWriteStream* stream) { 205 assert(JNIHandles::resolve(value()) == NULL || 206 Universe::heap()->is_in_reserved(JNIHandles::resolve(value())), 207 "Should be in heap"); 208 stream->write_int(CONSTANT_OOP_CODE); 209 stream->write_handle(value()); 210} 211 212void ConstantOopWriteValue::print_on(outputStream* st) const { 213 JNIHandles::resolve(value())->print_value_on(st); 214} 215 216 217// ConstantOopReadValue 218 219ConstantOopReadValue::ConstantOopReadValue(DebugInfoReadStream* stream) { 220 _value = Handle(stream->read_oop()); 221 assert(_value() == NULL || 222 Universe::heap()->is_in_reserved(_value()), "Should be in heap"); 223} 224 225void ConstantOopReadValue::write_on(DebugInfoWriteStream* stream) { 226 ShouldNotReachHere(); 227} 228 229void ConstantOopReadValue::print_on(outputStream* st) const { 230 value()()->print_value_on(st); 231} 232 233 234// MonitorValue 235 236MonitorValue::MonitorValue(ScopeValue* owner, Location basic_lock, bool eliminated) { 237 _owner = owner; 238 _basic_lock = basic_lock; 239 _eliminated = eliminated; 240} 241 242MonitorValue::MonitorValue(DebugInfoReadStream* stream) { 243 _basic_lock = Location(stream); 244 _owner = ScopeValue::read_from(stream); 245 _eliminated = (stream->read_bool() != 0); 246} 247 248void MonitorValue::write_on(DebugInfoWriteStream* stream) { 249 _basic_lock.write_on(stream); 250 _owner->write_on(stream); 251 stream->write_bool(_eliminated); 252} 253 254#ifndef PRODUCT 255void MonitorValue::print_on(outputStream* st) const { 256 st->print("monitor{"); 257 owner()->print_on(st); 258 st->print(","); 259 basic_lock().print_on(st); 260 st->print("}"); 261 if (_eliminated) { 262 st->print(" (eliminated)"); 263 } 264} 265#endif 266