| /* Copyright (c) 2015, 2018, 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 |
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| * published by the Free Software Foundation. |
| * |
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| * 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). |
| * |
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| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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| |
| #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 <typename T, class OopClosureType> |
| void InstanceMirrorKlass::oop_oop_iterate_statics(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 <typename T, class OopClosureType> |
| void InstanceMirrorKlass::oop_oop_iterate(oop obj, OopClosureType* closure) { |
| InstanceKlass::oop_oop_iterate<T>(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_unsafe_anonymous()) { |
| // An unsafe anonymous class doesn't have its own class loader, so |
| // when handling the java mirror for the 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 { |
| // We would like to assert here (as below) that if klass has been NULL, then |
| // this has been a mirror for a primitive type that we do not need to follow |
| // as they are always strong roots. |
| // However, we might get across a klass that just changed during CMS concurrent |
| // marking if allocation occurred in the old generation. |
| // This is benign here, as we keep alive all CLDs that were loaded during the |
| // CMS concurrent phase in the class loading, i.e. they will be iterated over |
| // and kept alive during remark. |
| // assert(java_lang_Class::is_primitive(obj), "Sanity check"); |
| } |
| } |
| |
| oop_oop_iterate_statics<T>(obj, closure); |
| } |
| |
| template <typename T, class OopClosureType> |
| void InstanceMirrorKlass::oop_oop_iterate_reverse(oop obj, OopClosureType* closure) { |
| InstanceKlass::oop_oop_iterate_reverse<T>(obj, closure); |
| |
| InstanceMirrorKlass::oop_oop_iterate_statics<T>(obj, closure); |
| } |
| |
| template <typename T, class OopClosureType> |
| void InstanceMirrorKlass::oop_oop_iterate_statics_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 <typename T, class OopClosureType> |
| void InstanceMirrorKlass::oop_oop_iterate_bounded(oop obj, OopClosureType* closure, MemRegion mr) { |
| InstanceKlass::oop_oop_iterate_bounded<T>(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<T>(obj, closure, mr); |
| } |
| |
| #endif // SHARE_VM_OOPS_INSTANCEMIRRORKLASS_INLINE_HPP |