--- /dev/null 2018-02-03 04:43:52.625000053 -0500 +++ new/src/hotspot/share/oops/constantPool.inline.hpp 2018-03-02 08:13:05.852475265 -0500 @@ -0,0 +1,69 @@ +/* + * Copyright (c) 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. + * + */ + +#ifndef SHARE_VM_OOPS_CONSTANTPOOL_INLINE_HPP +#define SHARE_VM_OOPS_CONSTANTPOOL_INLINE_HPP + +#include "oops/constantPool.hpp" +#include "runtime/orderAccess.inline.hpp" + +inline CPSlot ConstantPool::slot_at(int which) const { + assert(is_within_bounds(which), "index out of bounds"); + assert(!tag_at(which).is_unresolved_klass() && !tag_at(which).is_unresolved_klass_in_error(), "Corrupted constant pool"); + // Uses volatile because the klass slot changes without a lock. + intptr_t adr = OrderAccess::load_acquire(obj_at_addr(which)); + assert(adr != 0 || which == 0, "cp entry for klass should not be zero"); + return CPSlot(adr); +} + +inline Klass* ConstantPool::resolved_klass_at(int which) const { // Used by Compiler + guarantee(tag_at(which).is_klass(), "Corrupted constant pool"); + // Must do an acquire here in case another thread resolved the klass + // behind our back, lest we later load stale values thru the oop. + CPKlassSlot kslot = klass_slot_at(which); + assert(tag_at(kslot.name_index()).is_symbol(), "sanity"); + + Klass** adr = resolved_klasses()->adr_at(kslot.resolved_klass_index()); + return OrderAccess::load_acquire(adr); +} + +inline bool ConstantPool::is_pseudo_string_at(int which) { + assert(tag_at(which).is_string(), "Corrupted constant pool"); + return slot_at(which).is_pseudo_string(); +} + +inline oop ConstantPool::pseudo_string_at(int which, int obj_index) { + assert(is_pseudo_string_at(which), "must be a pseudo-string"); + oop s = resolved_references()->obj_at(obj_index); + return s; +} + +inline oop ConstantPool::pseudo_string_at(int which) { + assert(is_pseudo_string_at(which), "must be a pseudo-string"); + int obj_index = cp_to_object_index(which); + oop s = resolved_references()->obj_at(obj_index); + return s; +} + +#endif // SHARE_VM_OOPS_CONSTANTPOOL_INLINE_HPP