71 lines
2.8 KiB
C++
71 lines
2.8 KiB
C++
/*
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* Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_OOPS_CONSTANTPOOL_INLINE_HPP
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#define SHARE_OOPS_CONSTANTPOOL_INLINE_HPP
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#include "oops/constantPool.hpp"
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#include "oops/cpCache.inline.hpp"
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#include "runtime/atomic.hpp"
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inline CPSlot ConstantPool::slot_at(int which) const {
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assert(is_within_bounds(which), "index out of bounds");
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assert(!tag_at(which).is_unresolved_klass() && !tag_at(which).is_unresolved_klass_in_error(), "Corrupted constant pool");
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// Uses volatile because the klass slot changes without a lock.
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intptr_t adr = Atomic::load_acquire(obj_at_addr(which));
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assert(adr != 0 || which == 0, "cp entry for klass should not be zero");
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return CPSlot(adr);
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}
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inline Klass* ConstantPool::resolved_klass_at(int which) const { // Used by Compiler
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guarantee(tag_at(which).is_klass(), "Corrupted constant pool");
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// Must do an acquire here in case another thread resolved the klass
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// behind our back, lest we later load stale values thru the oop.
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CPKlassSlot kslot = klass_slot_at(which);
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assert(tag_at(kslot.name_index()).is_symbol(), "sanity");
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Klass** adr = resolved_klasses()->adr_at(kslot.resolved_klass_index());
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return Atomic::load_acquire(adr);
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}
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inline bool ConstantPool::is_pseudo_string_at(int which) {
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assert(tag_at(which).is_string(), "Corrupted constant pool");
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return slot_at(which).is_pseudo_string();
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}
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inline oop ConstantPool::pseudo_string_at(int which, int obj_index) {
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assert(is_pseudo_string_at(which), "must be a pseudo-string");
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oop s = resolved_references()->obj_at(obj_index);
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return s;
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}
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inline oop ConstantPool::pseudo_string_at(int which) {
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assert(is_pseudo_string_at(which), "must be a pseudo-string");
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int obj_index = cp_to_object_index(which);
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oop s = resolved_references()->obj_at(obj_index);
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return s;
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}
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#endif // SHARE_OOPS_CONSTANTPOOL_INLINE_HPP
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