Mercurial > hg > truffle
diff src/share/vm/runtime/reflectionUtils.cpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 4ce7240d622c |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/runtime/reflectionUtils.cpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,84 @@ +/* + * Copyright 1999-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +#include "incls/_precompiled.incl" +#include "incls/_reflectionUtils.cpp.incl" + +KlassStream::KlassStream(instanceKlassHandle klass, bool local_only, bool classes_only) { + _klass = klass; + if (classes_only) { + _interfaces = Universe::the_empty_system_obj_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 = klassOop(_interfaces->obj_at(--_interface_index)); + } else { + return true; + } + } + _index = length(); + next(); + return eos(); +} + + +GrowableArray<FilteredField*> *FilteredFieldsMap::_filtered_fields = + new (ResourceObj::C_HEAP) 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::cp_oop_offset(); + _filtered_fields->append(new FilteredField(SystemDictionary::reflect_constant_pool_klass(), offset)); + offset = sun_reflect_UnsafeStaticFieldAccessorImpl::base_offset(); + _filtered_fields->append(new FilteredField(SystemDictionary::reflect_unsafe_static_field_accessor_impl_klass(), offset)); + } +} + +int FilteredFieldStream::field_count() { + int numflds = 0; + for (;!eos(); next()) { + numflds++; + } + return numflds; +}