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