--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/code/debugInfo.cpp Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,272 @@
+/*
+ * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "code/debugInfo.hpp"
+#include "code/debugInfoRec.hpp"
+#include "code/nmethod.hpp"
+#include "oops/oop.inline.hpp"
+#include "runtime/handles.inline.hpp"
+
+// Constructors
+
+DebugInfoWriteStream::DebugInfoWriteStream(DebugInformationRecorder* recorder, int initial_size)
+: CompressedWriteStream(initial_size) {
+ _recorder = recorder;
+}
+
+// Serializing oops
+
+void DebugInfoWriteStream::write_handle(jobject h) {
+ write_int(recorder()->oop_recorder()->find_index(h));
+}
+
+void DebugInfoWriteStream::write_metadata(Metadata* h) {
+ write_int(recorder()->oop_recorder()->find_index(h));
+}
+
+oop DebugInfoReadStream::read_oop() {
+ oop o = code()->oop_at(read_int());
+ assert(oopDesc::is_oop_or_null(o), "oop only");
+ return o;
+}
+
+ScopeValue* DebugInfoReadStream::read_object_value() {
+ int id = read_int();
+#ifdef ASSERT
+ assert(_obj_pool != NULL, "object pool does not exist");
+ for (int i = _obj_pool->length() - 1; i >= 0; i--) {
+ assert(_obj_pool->at(i)->as_ObjectValue()->id() != id, "should not be read twice");
+ }
+#endif
+ ObjectValue* result = new ObjectValue(id);
+ // Cache the object since an object field could reference it.
+ _obj_pool->push(result);
+ result->read_object(this);
+ return result;
+}
+
+ScopeValue* DebugInfoReadStream::get_cached_object() {
+ int id = read_int();
+ assert(_obj_pool != NULL, "object pool does not exist");
+ for (int i = _obj_pool->length() - 1; i >= 0; i--) {
+ ObjectValue* ov = _obj_pool->at(i)->as_ObjectValue();
+ if (ov->id() == id) {
+ return ov;
+ }
+ }
+ ShouldNotReachHere();
+ return NULL;
+}
+
+// Serializing scope values
+
+enum { LOCATION_CODE = 0, CONSTANT_INT_CODE = 1, CONSTANT_OOP_CODE = 2,
+ CONSTANT_LONG_CODE = 3, CONSTANT_DOUBLE_CODE = 4,
+ OBJECT_CODE = 5, OBJECT_ID_CODE = 6 };
+
+ScopeValue* ScopeValue::read_from(DebugInfoReadStream* stream) {
+ ScopeValue* result = NULL;
+ switch(stream->read_int()) {
+ case LOCATION_CODE: result = new LocationValue(stream); break;
+ case CONSTANT_INT_CODE: result = new ConstantIntValue(stream); break;
+ case CONSTANT_OOP_CODE: result = new ConstantOopReadValue(stream); break;
+ case CONSTANT_LONG_CODE: result = new ConstantLongValue(stream); break;
+ case CONSTANT_DOUBLE_CODE: result = new ConstantDoubleValue(stream); break;
+ case OBJECT_CODE: result = stream->read_object_value(); break;
+ case OBJECT_ID_CODE: result = stream->get_cached_object(); break;
+ default: ShouldNotReachHere();
+ }
+ return result;
+}
+
+// LocationValue
+
+LocationValue::LocationValue(DebugInfoReadStream* stream) {
+ _location = Location(stream);
+}
+
+void LocationValue::write_on(DebugInfoWriteStream* stream) {
+ stream->write_int(LOCATION_CODE);
+ location().write_on(stream);
+}
+
+void LocationValue::print_on(outputStream* st) const {
+ location().print_on(st);
+}
+
+// ObjectValue
+
+void ObjectValue::read_object(DebugInfoReadStream* stream) {
+ _klass = read_from(stream);
+ assert(_klass->is_constant_oop(), "should be constant java mirror oop");
+ int length = stream->read_int();
+ for (int i = 0; i < length; i++) {
+ ScopeValue* val = read_from(stream);
+ _field_values.append(val);
+ }
+}
+
+void ObjectValue::write_on(DebugInfoWriteStream* stream) {
+ if (_visited) {
+ stream->write_int(OBJECT_ID_CODE);
+ stream->write_int(_id);
+ } else {
+ _visited = true;
+ stream->write_int(OBJECT_CODE);
+ stream->write_int(_id);
+ _klass->write_on(stream);
+ int length = _field_values.length();
+ stream->write_int(length);
+ for (int i = 0; i < length; i++) {
+ _field_values.at(i)->write_on(stream);
+ }
+ }
+}
+
+void ObjectValue::print_on(outputStream* st) const {
+ st->print("obj[%d]", _id);
+}
+
+void ObjectValue::print_fields_on(outputStream* st) const {
+#ifndef PRODUCT
+ if (_field_values.length() > 0) {
+ _field_values.at(0)->print_on(st);
+ }
+ for (int i = 1; i < _field_values.length(); i++) {
+ st->print(", ");
+ _field_values.at(i)->print_on(st);
+ }
+#endif
+}
+
+// ConstantIntValue
+
+ConstantIntValue::ConstantIntValue(DebugInfoReadStream* stream) {
+ _value = stream->read_signed_int();
+}
+
+void ConstantIntValue::write_on(DebugInfoWriteStream* stream) {
+ stream->write_int(CONSTANT_INT_CODE);
+ stream->write_signed_int(value());
+}
+
+void ConstantIntValue::print_on(outputStream* st) const {
+ st->print("%d", value());
+}
+
+// ConstantLongValue
+
+ConstantLongValue::ConstantLongValue(DebugInfoReadStream* stream) {
+ _value = stream->read_long();
+}
+
+void ConstantLongValue::write_on(DebugInfoWriteStream* stream) {
+ stream->write_int(CONSTANT_LONG_CODE);
+ stream->write_long(value());
+}
+
+void ConstantLongValue::print_on(outputStream* st) const {
+ st->print(JLONG_FORMAT, value());
+}
+
+// ConstantDoubleValue
+
+ConstantDoubleValue::ConstantDoubleValue(DebugInfoReadStream* stream) {
+ _value = stream->read_double();
+}
+
+void ConstantDoubleValue::write_on(DebugInfoWriteStream* stream) {
+ stream->write_int(CONSTANT_DOUBLE_CODE);
+ stream->write_double(value());
+}
+
+void ConstantDoubleValue::print_on(outputStream* st) const {
+ st->print("%f", value());
+}
+
+// ConstantOopWriteValue
+
+void ConstantOopWriteValue::write_on(DebugInfoWriteStream* stream) {
+ assert(JNIHandles::resolve(value()) == NULL ||
+ Universe::heap()->is_in_reserved(JNIHandles::resolve(value())),
+ "Should be in heap");
+ stream->write_int(CONSTANT_OOP_CODE);
+ stream->write_handle(value());
+}
+
+void ConstantOopWriteValue::print_on(outputStream* st) const {
+ JNIHandles::resolve(value())->print_value_on(st);
+}
+
+
+// ConstantOopReadValue
+
+ConstantOopReadValue::ConstantOopReadValue(DebugInfoReadStream* stream) {
+ _value = Handle(Thread::current(), stream->read_oop());
+ assert(_value() == NULL ||
+ Universe::heap()->is_in_reserved(_value()), "Should be in heap");
+}
+
+void ConstantOopReadValue::write_on(DebugInfoWriteStream* stream) {
+ ShouldNotReachHere();
+}
+
+void ConstantOopReadValue::print_on(outputStream* st) const {
+ value()()->print_value_on(st);
+}
+
+
+// MonitorValue
+
+MonitorValue::MonitorValue(ScopeValue* owner, Location basic_lock, bool eliminated) {
+ _owner = owner;
+ _basic_lock = basic_lock;
+ _eliminated = eliminated;
+}
+
+MonitorValue::MonitorValue(DebugInfoReadStream* stream) {
+ _basic_lock = Location(stream);
+ _owner = ScopeValue::read_from(stream);
+ _eliminated = (stream->read_bool() != 0);
+}
+
+void MonitorValue::write_on(DebugInfoWriteStream* stream) {
+ _basic_lock.write_on(stream);
+ _owner->write_on(stream);
+ stream->write_bool(_eliminated);
+}
+
+#ifndef PRODUCT
+void MonitorValue::print_on(outputStream* st) const {
+ st->print("monitor{");
+ owner()->print_on(st);
+ st->print(",");
+ basic_lock().print_on(st);
+ st->print("}");
+ if (_eliminated) {
+ st->print(" (eliminated)");
+ }
+}
+#endif