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src/share/vm/runtime/reflectionUtils.cpp@2b8e28fdf503 (annotated)

src/share/vm/runtime/reflectionUtils.cpp

Tue, 05 Nov 2013 17:38:04 -0800

author

kvn

date

Tue, 05 Nov 2013 17:38:04 -0800

changeset 6472

2b8e28fdf503

parent 5848

ac9cb1d5a202

child 6876

710a3c8b516e

permissions

-rw-r--r--

Merge

duke@435	1	/*
acorn@5848	2	* Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#include "precompiled.hpp"
stefank@2314	26	#include "classfile/javaClasses.hpp"
stefank@2314	27	#include "memory/universe.inline.hpp"
stefank@2314	28	#include "runtime/reflectionUtils.hpp"
duke@435	29
acorn@5848	30	KlassStream::KlassStream(instanceKlassHandle klass, bool local_only,
acorn@5848	31	bool classes_only, bool walk_defaults) {
acorn@5848	32	_klass = _base_klass = klass;
acorn@5848	33	_base_class_search_defaults = false;
acorn@5848	34	_defaults_checked = false;
duke@435	35	if (classes_only) {
coleenp@4037	36	_interfaces = Universe::the_empty_klass_array();
duke@435	37	} else {
duke@435	38	_interfaces = klass->transitive_interfaces();
duke@435	39	}
duke@435	40	_interface_index = _interfaces->length();
duke@435	41	_local_only = local_only;
duke@435	42	_classes_only = classes_only;
acorn@5848	43	_walk_defaults = walk_defaults;
duke@435	44	}
duke@435	45
duke@435	46	bool KlassStream::eos() {
duke@435	47	if (index() >= 0) return false;
duke@435	48	if (_local_only) return true;
duke@435	49	if (!_klass->is_interface() && _klass->super() != NULL) {
duke@435	50	// go up superclass chain (not for interfaces)
duke@435	51	_klass = _klass->super();
acorn@5848	52	// Next for method walks, walk default methods
acorn@5848	53	} else if (_walk_defaults && (_defaults_checked == false) && (_base_klass->default_methods() != NULL)) {
acorn@5848	54	_base_class_search_defaults = true;
acorn@5848	55	_klass = _base_klass;
acorn@5848	56	_defaults_checked = true;
duke@435	57	} else {
acorn@5848	58	// Next walk transitive interfaces
duke@435	59	if (_interface_index > 0) {
coleenp@4037	60	_klass = _interfaces->at(--_interface_index);
duke@435	61	} else {
duke@435	62	return true;
duke@435	63	}
duke@435	64	}
duke@435	65	_index = length();
duke@435	66	next();
duke@435	67	return eos();
duke@435	68	}
duke@435	69
duke@435	70
duke@435	71	GrowableArray<FilteredField*> *FilteredFieldsMap::_filtered_fields =
zgu@3900	72	new (ResourceObj::C_HEAP, mtInternal) GrowableArray<FilteredField*>(3,true);
duke@435	73
duke@435	74
duke@435	75	void FilteredFieldsMap::initialize() {
duke@435	76	int offset;
duke@435	77	offset = java_lang_Throwable::get_backtrace_offset();
never@1577	78	_filtered_fields->append(new FilteredField(SystemDictionary::Throwable_klass(), offset));
duke@435	79	// The latest version of vm may be used with old jdk.
duke@435	80	if (JDK_Version::is_gte_jdk16x_version()) {
duke@435	81	// The following class fields do not exist in
duke@435	82	// previous version of jdk.
coleenp@4037	83	offset = sun_reflect_ConstantPool::oop_offset();
never@1577	84	_filtered_fields->append(new FilteredField(SystemDictionary::reflect_ConstantPool_klass(), offset));
duke@435	85	offset = sun_reflect_UnsafeStaticFieldAccessorImpl::base_offset();
never@1577	86	_filtered_fields->append(new FilteredField(SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass(), offset));
duke@435	87	}
duke@435	88	}
duke@435	89
duke@435	90	int FilteredFieldStream::field_count() {
duke@435	91	int numflds = 0;
duke@435	92	for (;!eos(); next()) {
duke@435	93	numflds++;
duke@435	94	}
duke@435	95	return numflds;
duke@435	96	}