1 /* 2 * Copyright (c) 2011, 2018, 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 #include "classfile/classLoaderData.hpp" 26 #include "classfile/javaClasses.hpp" 27 #include "oops/oop.inline.hpp" 28 29 inline ClassLoaderData* ClassLoaderData::class_loader_data_or_null(oop loader) { 30 if (loader == NULL) { 31 return ClassLoaderData::the_null_class_loader_data(); 32 } 33 return java_lang_ClassLoader::loader_data(loader); 34 } 35 36 inline ClassLoaderData* ClassLoaderData::class_loader_data(oop loader) { 37 ClassLoaderData* loader_data = class_loader_data_or_null(loader); 38 assert(loader_data != NULL, "Must be"); 39 return loader_data; 40 } 41 42 43 inline ClassLoaderData *ClassLoaderDataGraph::find_or_create(Handle loader, TRAPS) { 44 guarantee(loader() != NULL && oopDesc::is_oop(loader()), "Loader must be oop"); 45 // Gets the class loader data out of the java/lang/ClassLoader object, if non-null 46 // it's already in the loader_data, so no need to add 47 ClassLoaderData* loader_data= java_lang_ClassLoader::loader_data(loader()); 48 if (loader_data) { 49 return loader_data; 50 } 51 return ClassLoaderDataGraph::add(loader, false, THREAD); 52 } 53 54 size_t ClassLoaderDataGraph::num_instance_classes() { 55 return _num_instance_classes; 56 } 57 58 size_t ClassLoaderDataGraph::num_array_classes() { 59 return _num_array_classes; 60 } 61 62 void ClassLoaderDataGraph::inc_instance_classes(size_t count) { 63 Atomic::add(count, &_num_instance_classes); 64 } 65 66 void ClassLoaderDataGraph::dec_instance_classes(size_t count) { 67 assert(count <= _num_instance_classes, "Sanity"); 68 Atomic::sub(count, &_num_instance_classes); 69 } 70 71 void ClassLoaderDataGraph::inc_array_classes(size_t count) { 72 Atomic::add(count, &_num_array_classes); 73 } 74 75 void ClassLoaderDataGraph::dec_array_classes(size_t count) { 76 assert(count <= _num_array_classes, "Sanity"); 77 Atomic::sub(count, &_num_array_classes); 78 }