diff -r 4ebc2e2fb97c -r 71c04702a3d5 src/hotspot/share/oops/instanceMirrorKlass.inline.hpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/hotspot/share/oops/instanceMirrorKlass.inline.hpp Tue Sep 12 19:03:39 2017 +0200 @@ -0,0 +1,149 @@ +/* Copyright (c) 2015, 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. + * + */ + +#ifndef SHARE_VM_OOPS_INSTANCEMIRRORKLASS_INLINE_HPP +#define SHARE_VM_OOPS_INSTANCEMIRRORKLASS_INLINE_HPP + +#include "classfile/javaClasses.hpp" +#include "oops/instanceKlass.inline.hpp" +#include "oops/instanceMirrorKlass.hpp" +#include "oops/klass.hpp" +#include "oops/oop.inline.hpp" +#include "utilities/debug.hpp" +#include "utilities/globalDefinitions.hpp" +#include "utilities/macros.hpp" + +template +void InstanceMirrorKlass::oop_oop_iterate_statics_specialized(oop obj, OopClosureType* closure) { + T* p = (T*)start_of_static_fields(obj); + T* const end = p + java_lang_Class::static_oop_field_count(obj); + + for (; p < end; ++p) { + Devirtualizer::do_oop(closure, p); + } +} + +template +void InstanceMirrorKlass::oop_oop_iterate_statics(oop obj, OopClosureType* closure) { + if (UseCompressedOops) { + oop_oop_iterate_statics_specialized(obj, closure); + } else { + oop_oop_iterate_statics_specialized(obj, closure); + } +} + +template +void InstanceMirrorKlass::oop_oop_iterate(oop obj, OopClosureType* closure) { + InstanceKlass::oop_oop_iterate(obj, closure); + + if (Devirtualizer::do_metadata(closure)) { + Klass* klass = java_lang_Class::as_Klass(obj); + // We'll get NULL for primitive mirrors. + if (klass != NULL) { + if (klass->is_instance_klass() && InstanceKlass::cast(klass)->is_anonymous()) { + // An anonymous class doesn't have its own class loader, so when handling + // the java mirror for an anonymous class we need to make sure its class + // loader data is claimed, this is done by calling do_cld explicitly. + // For non-anonymous classes the call to do_cld is made when the class + // loader itself is handled. + Devirtualizer::do_cld(closure, klass->class_loader_data()); + } else { + Devirtualizer::do_klass(closure, klass); + } + } else { + // If klass is NULL then this a mirror for a primitive type. + // We don't have to follow them, since they are handled as strong + // roots in Universe::oops_do. + assert(java_lang_Class::is_primitive(obj), "Sanity check"); + } + } + + oop_oop_iterate_statics(obj, closure); +} + +#if INCLUDE_ALL_GCS +template +void InstanceMirrorKlass::oop_oop_iterate_reverse(oop obj, OopClosureType* closure) { + InstanceKlass::oop_oop_iterate_reverse(obj, closure); + + InstanceMirrorKlass::oop_oop_iterate_statics(obj, closure); +} +#endif + +template +void InstanceMirrorKlass::oop_oop_iterate_statics_specialized_bounded(oop obj, + OopClosureType* closure, + MemRegion mr) { + T* p = (T*)start_of_static_fields(obj); + T* end = p + java_lang_Class::static_oop_field_count(obj); + + T* const l = (T*)mr.start(); + T* const h = (T*)mr.end(); + assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && + mask_bits((intptr_t)h, sizeof(T)-1) == 0, + "bounded region must be properly aligned"); + + if (p < l) { + p = l; + } + if (end > h) { + end = h; + } + + for (;p < end; ++p) { + Devirtualizer::do_oop(closure, p); + } +} + +template +void InstanceMirrorKlass::oop_oop_iterate_statics_bounded(oop obj, OopClosureType* closure, MemRegion mr) { + if (UseCompressedOops) { + oop_oop_iterate_statics_specialized_bounded(obj, closure, mr); + } else { + oop_oop_iterate_statics_specialized_bounded(obj, closure, mr); + } +} + +template +void InstanceMirrorKlass::oop_oop_iterate_bounded(oop obj, OopClosureType* closure, MemRegion mr) { + InstanceKlass::oop_oop_iterate_bounded(obj, closure, mr); + + if (Devirtualizer::do_metadata(closure)) { + if (mr.contains(obj)) { + Klass* klass = java_lang_Class::as_Klass(obj); + // We'll get NULL for primitive mirrors. + if (klass != NULL) { + Devirtualizer::do_klass(closure, klass); + } + } + } + + oop_oop_iterate_statics_bounded(obj, closure, mr); +} + +#define ALL_INSTANCE_MIRROR_KLASS_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ + OOP_OOP_ITERATE_DEFN( InstanceMirrorKlass, OopClosureType, nv_suffix) \ + OOP_OOP_ITERATE_DEFN_BOUNDED( InstanceMirrorKlass, OopClosureType, nv_suffix) \ + OOP_OOP_ITERATE_DEFN_BACKWARDS(InstanceMirrorKlass, OopClosureType, nv_suffix) + +#endif // SHARE_VM_OOPS_INSTANCEMIRRORKLASS_INLINE_HPP