Mercurial > hg > graal-jvmci-8
view src/share/vm/runtime/reflectionUtils.cpp @ 7446:e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
Reviewed-by: johnc, coleenp
author | jmasa |
---|---|
date | Mon, 03 Dec 2012 15:09:39 -0800 |
parents | da91efe96a93 |
children | e522a00b91aa ac9cb1d5a202 |
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/* * Copyright (c) 1999, 2012, 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. * */ #include "precompiled.hpp" #include "classfile/javaClasses.hpp" #include "memory/universe.inline.hpp" #include "runtime/reflectionUtils.hpp" KlassStream::KlassStream(instanceKlassHandle klass, bool local_only, bool classes_only) { _klass = klass; if (classes_only) { _interfaces = Universe::the_empty_klass_array(); } else { _interfaces = klass->transitive_interfaces(); } _interface_index = _interfaces->length(); _local_only = local_only; _classes_only = classes_only; } bool KlassStream::eos() { if (index() >= 0) return false; if (_local_only) return true; if (!_klass->is_interface() && _klass->super() != NULL) { // go up superclass chain (not for interfaces) _klass = _klass->super(); } else { if (_interface_index > 0) { _klass = _interfaces->at(--_interface_index); } else { return true; } } _index = length(); next(); return eos(); } GrowableArray<FilteredField*> *FilteredFieldsMap::_filtered_fields = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<FilteredField*>(3,true); void FilteredFieldsMap::initialize() { int offset; offset = java_lang_Throwable::get_backtrace_offset(); _filtered_fields->append(new FilteredField(SystemDictionary::Throwable_klass(), offset)); // The latest version of vm may be used with old jdk. if (JDK_Version::is_gte_jdk16x_version()) { // The following class fields do not exist in // previous version of jdk. offset = sun_reflect_ConstantPool::oop_offset(); _filtered_fields->append(new FilteredField(SystemDictionary::reflect_ConstantPool_klass(), offset)); offset = sun_reflect_UnsafeStaticFieldAccessorImpl::base_offset(); _filtered_fields->append(new FilteredField(SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass(), offset)); } } int FilteredFieldStream::field_count() { int numflds = 0; for (;!eos(); next()) { numflds++; } return numflds; }