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 #ifndef SHARE_VM_CLASSFILE_CLASSLOADERDATA_INLINE_HPP 26 #define SHARE_VM_CLASSFILE_CLASSLOADERDATA_INLINE_HPP 27 28 #include "classfile/classLoaderData.hpp" 29 #include "classfile/javaClasses.hpp" 30 #include "oops/oop.inline.hpp" 31 #include "oops/weakHandle.inline.hpp" 32 33 inline oop ClassLoaderData::class_loader() const { 34 assert(!_unloading, "This oop is not available to unloading class loader data"); 35 assert(_holder.is_null() || _holder.peek() != NULL , "This class loader data holder must be alive"); 36 return _class_loader.resolve(); 37 } 38 39 inline bool ClassLoaderData::is_boot_class_loader_data() const { 40 return class_loader() == NULL; 41 } 42 43 inline ClassLoaderData* ClassLoaderData::class_loader_data_or_null(oop loader) { 44 if (loader == NULL) { 45 return ClassLoaderData::the_null_class_loader_data(); 46 } 47 return java_lang_ClassLoader::loader_data(loader); 48 } 49 50 inline ClassLoaderData* ClassLoaderData::class_loader_data(oop loader) { 51 ClassLoaderData* loader_data = class_loader_data_or_null(loader); 52 assert(loader_data != NULL, "Must be"); 53 return loader_data; 54 } 55 56 57 inline ClassLoaderData *ClassLoaderDataGraph::find_or_create(Handle loader) { 58 guarantee(loader() != NULL && oopDesc::is_oop(loader()), "Loader must be oop"); 59 // Gets the class loader data out of the java/lang/ClassLoader object, if non-null 60 // it's already in the loader_data, so no need to add 61 ClassLoaderData* loader_data= java_lang_ClassLoader::loader_data(loader()); 62 if (loader_data) { 63 return loader_data; 64 } 65 return ClassLoaderDataGraph::add(loader, false); 66 } 67 68 size_t ClassLoaderDataGraph::num_instance_classes() { 69 return _num_instance_classes; 70 } 71 72 size_t ClassLoaderDataGraph::num_array_classes() { 73 return _num_array_classes; 74 } 75 76 void ClassLoaderDataGraph::inc_instance_classes(size_t count) { 77 Atomic::add(count, &_num_instance_classes); 78 } 79 80 void ClassLoaderDataGraph::dec_instance_classes(size_t count) { 81 assert(count <= _num_instance_classes, "Sanity"); 82 Atomic::sub(count, &_num_instance_classes); 83 } 84 85 void ClassLoaderDataGraph::inc_array_classes(size_t count) { 86 Atomic::add(count, &_num_array_classes); 87 } 88 89 void ClassLoaderDataGraph::dec_array_classes(size_t count) { 90 assert(count <= _num_array_classes, "Sanity"); 91 Atomic::sub(count, &_num_array_classes); 92 } 93 94 #endif // SHARE_VM_CLASSFILE_CLASSLOADERDATA_INLINE_HPP