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/*
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* Copyright (c) 2018, 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_VM_CLASSFILE_CLASSLOADER_INLINE_HPP
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#define SHARE_VM_CLASSFILE_CLASSLOADER_INLINE_HPP
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#include "classfile/classLoader.hpp"
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#include "runtime/orderAccess.inline.hpp"
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// Next entry in class path
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inline ClassPathEntry* ClassPathEntry::next() const { return OrderAccess::load_acquire(&_next); }
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inline void ClassPathEntry::set_next(ClassPathEntry* next) {
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// may have unlocked readers, so ensure visibility.
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OrderAccess::release_store(&_next, next);
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}
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inline ClassPathEntry* ClassLoader::classpath_entry(int n) {
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assert(n >= 0, "sanity");
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if (n == 0) {
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assert(has_jrt_entry(), "No class path entry at 0 for exploded module builds");
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return ClassLoader::_jrt_entry;
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} else {
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// The java runtime image is always the first entry
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// in the FileMapInfo::_classpath_entry_table. Even though
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// the _jrt_entry is not included in the _first_append_entry
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// linked list, it must be accounted for when comparing the
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// class path vs. the shared archive class path.
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ClassPathEntry* e = ClassLoader::_first_append_entry;
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while (--n >= 1) {
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assert(e != NULL, "Not that many classpath entries.");
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e = e->next();
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}
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return e;
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}
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}
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#if INCLUDE_CDS
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// Helper function used by CDS code to get the number of boot classpath
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// entries during shared classpath setup time.
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inline int ClassLoader::num_boot_classpath_entries() {
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assert(DumpSharedSpaces, "Should only be called at CDS dump time");
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assert(has_jrt_entry(), "must have a java runtime image");
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int num_entries = 1; // count the runtime image
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ClassPathEntry* e = ClassLoader::_first_append_entry;
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while (e != NULL) {
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num_entries ++;
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e = e->next();
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}
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return num_entries;
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}
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inline ClassPathEntry* ClassLoader::get_next_boot_classpath_entry(ClassPathEntry* e) {
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if (e == ClassLoader::_jrt_entry) {
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return ClassLoader::_first_append_entry;
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} else {
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return e->next();
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}
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}
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// Helper function used by CDS code to get the number of app classpath
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// entries during shared classpath setup time.
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inline int ClassLoader::num_app_classpath_entries() {
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assert(DumpSharedSpaces, "Should only be called at CDS dump time");
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int num_entries = 0;
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ClassPathEntry* e= ClassLoader::_app_classpath_entries;
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while (e != NULL) {
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num_entries ++;
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e = e->next();
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}
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return num_entries;
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}
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#endif // INCLUDE_CDS
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#endif // SHARE_VM_CLASSFILE_CLASSLOADER_INLINE_HPP
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