/* * Copyright (c) 1997, 2018, 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 "classfile/javaClasses.hpp" #include "classfile/symbolTable.hpp" #include "classfile/systemDictionary.hpp" #include "classfile/vmSymbols.hpp" #include "gc/shared/collectedHeap.inline.hpp" #include "memory/oopFactory.hpp" #include "memory/resourceArea.hpp" #include "memory/universe.hpp" #include "oops/instanceKlass.hpp" #include "oops/instanceOop.hpp" #include "oops/objArrayOop.inline.hpp" #include "oops/objArrayOop.hpp" #include "oops/oop.inline.hpp" #include "oops/typeArrayOop.inline.hpp" #include "oops/valueKlass.hpp" #include "oops/valueArrayKlass.hpp" #include "runtime/handles.inline.hpp" typeArrayOop oopFactory::new_charArray(const char* utf8_str, TRAPS) { int length = utf8_str == NULL ? 0 : UTF8::unicode_length(utf8_str); typeArrayOop result = new_charArray(length, CHECK_NULL); if (length > 0) { UTF8::convert_to_unicode(utf8_str, result->char_at_addr(0), length); } return result; } typeArrayOop oopFactory::new_tenured_charArray(int length, TRAPS) { return TypeArrayKlass::cast(Universe::charArrayKlassObj())->allocate(length, THREAD); } typeArrayOop oopFactory::new_typeArray(BasicType type, int length, TRAPS) { Klass* type_asKlassOop = Universe::typeArrayKlassObj(type); TypeArrayKlass* type_asArrayKlass = TypeArrayKlass::cast(type_asKlassOop); typeArrayOop result = type_asArrayKlass->allocate(length, THREAD); return result; } // Create a Java array that points to Symbol. // As far as Java code is concerned, a Symbol array is either an array of // int or long depending on pointer size. Only stack trace elements in Throwable use // this. They cast Symbol* into this type. typeArrayOop oopFactory::new_symbolArray(int length, TRAPS) { BasicType type = LP64_ONLY(T_LONG) NOT_LP64(T_INT); Klass* type_asKlassOop = Universe::typeArrayKlassObj(type); TypeArrayKlass* type_asArrayKlass = TypeArrayKlass::cast(type_asKlassOop); typeArrayOop result = type_asArrayKlass->allocate(length, THREAD); return result; } typeArrayOop oopFactory::new_typeArray_nozero(BasicType type, int length, TRAPS) { Klass* type_asKlassOop = Universe::typeArrayKlassObj(type); TypeArrayKlass* type_asArrayKlass = TypeArrayKlass::cast(type_asKlassOop); typeArrayOop result = type_asArrayKlass->allocate_common(length, false, THREAD); return result; } objArrayOop oopFactory::new_objArray(Klass* klass, int length, TRAPS) { assert(klass->is_klass(), "must be instance class"); assert(!klass->is_value() || (!ValueKlass::cast(klass)->flatten_array()), "Did not expect flatten array of value klass"); if (klass->is_array_klass()) { return ArrayKlass::cast(klass)->allocate_arrayArray(1, length, THREAD); } else { return InstanceKlass::cast(klass)->allocate_objArray(1, length, THREAD); } } arrayOop oopFactory::new_valueArray(Klass* klass, int length, TRAPS) { assert(klass->is_value(), "Klass must be value type"); Klass* array_klass = klass->array_klass(CHECK_NULL); // Flat value array or object array ? assert(array_klass->is_valueArray_klass() || array_klass->is_objArray_klass(), "Expect an array class here"); if (array_klass->is_valueArray_klass()) { return (arrayOop) ValueArrayKlass::cast(array_klass)->allocate(length, THREAD); } ValueKlass* vklass = ValueKlass::cast(klass); objArrayOop array = oopFactory::new_objArray(klass, length, CHECK_NULL); if (length == 0) { return array; } // Populate default values... objArrayHandle array_h(THREAD, array); instanceOop value = (instanceOop)vklass->default_value(); for (int i = 0; i < length; i++) { array_h->obj_at_put(i, value); } return array_h(); } arrayOop oopFactory::new_array(Klass* klass, int length, TRAPS) { return (klass->is_value()) ? new_valueArray(klass, length, THREAD) : (arrayOop)new_objArray(klass, length, THREAD); } objArrayHandle oopFactory::new_objArray_handle(Klass* klass, int length, TRAPS) { objArrayOop obj = new_objArray(klass, length, CHECK_(objArrayHandle())); return objArrayHandle(THREAD, obj); } typeArrayHandle oopFactory::new_byteArray_handle(int length, TRAPS) { typeArrayOop obj = new_byteArray(length, CHECK_(typeArrayHandle())); return typeArrayHandle(THREAD, obj); }