1 /* 2 * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_CLASSFILE_CLASSLOADERDATAGRAPH_INLINE_HPP 26 #define SHARE_CLASSFILE_CLASSLOADERDATAGRAPH_INLINE_HPP 27 28 #include "classfile/classLoaderDataGraph.hpp" 29 #include "classfile/javaClasses.hpp" 30 #include "oops/oop.inline.hpp" 31 #include "runtime/atomic.hpp" 32 33 inline ClassLoaderData *ClassLoaderDataGraph::find_or_create(Handle loader) { 34 guarantee(loader() != NULL && oopDesc::is_oop(loader()), "Loader must be oop"); 35 // Gets the class loader data out of the java/lang/ClassLoader object, if non-null 36 // it's already in the loader_data, so no need to add 37 ClassLoaderData* loader_data = java_lang_ClassLoader::loader_data_acquire(loader()); 38 if (loader_data) { 39 return loader_data; 40 } 41 return ClassLoaderDataGraph::add(loader, false); 42 } 43 44 size_t ClassLoaderDataGraph::num_instance_classes() { 45 return _num_instance_classes; 46 } 47 48 size_t ClassLoaderDataGraph::num_array_classes() { 49 return _num_array_classes; 50 } 51 52 void ClassLoaderDataGraph::inc_instance_classes(size_t count) { 53 Atomic::add(&_num_instance_classes, count); 54 } 55 56 void ClassLoaderDataGraph::dec_instance_classes(size_t count) { 57 assert(count <= _num_instance_classes, "Sanity"); 58 Atomic::sub(&_num_instance_classes, count); 59 } 60 61 void ClassLoaderDataGraph::inc_array_classes(size_t count) { 62 Atomic::add(&_num_array_classes, count); 63 } 64 65 void ClassLoaderDataGraph::dec_array_classes(size_t count) { 66 assert(count <= _num_array_classes, "Sanity"); 67 Atomic::sub(&_num_array_classes, count); 68 } 69 70 bool ClassLoaderDataGraph::should_clean_metaspaces_and_reset() { 71 // Only clean metaspaces after full GC. 72 bool do_cleaning = _safepoint_cleanup_needed; 73 #if INCLUDE_JVMTI 74 do_cleaning = do_cleaning && (_should_clean_deallocate_lists || InstanceKlass::has_previous_versions()); 75 #else 76 do_cleaning = do_cleaning && _should_clean_deallocate_lists; 77 #endif 78 _safepoint_cleanup_needed = false; // reset 79 return do_cleaning; 80 } 81 82 #endif // SHARE_CLASSFILE_CLASSLOADERDATAGRAPH_INLINE_HPP