2223N/A/*
2223N/A * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
2223N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
2223N/A *
2223N/A * This code is free software; you can redistribute it and/or modify it
2223N/A * under the terms of the GNU General Public License version 2 only, as
2223N/A * published by the Free Software Foundation.
2223N/A *
2223N/A * This code is distributed in the hope that it will be useful, but WITHOUT
2223N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
2223N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
2223N/A * version 2 for more details (a copy is included in the LICENSE file that
2223N/A * accompanied this code).
2223N/A *
2223N/A * You should have received a copy of the GNU General Public License version
2223N/A * 2 along with this work; if not, write to the Free Software Foundation,
2223N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
2223N/A *
2223N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2223N/A * or visit www.oracle.com if you need additional information or have any
2223N/A * questions.
2223N/A *
2223N/A */
2223N/A
2223N/A#include "precompiled.hpp"
2223N/A#include "classfile/javaClasses.hpp"
2223N/A#include "classfile/systemDictionary.hpp"
2223N/A#include "gc_implementation/shared/markSweep.inline.hpp"
2223N/A#include "gc_interface/collectedHeap.inline.hpp"
2223N/A#include "memory/genOopClosures.inline.hpp"
2223N/A#include "memory/oopFactory.hpp"
2223N/A#include "memory/permGen.hpp"
2223N/A#include "oops/instanceKlass.hpp"
2223N/A#include "oops/instanceMirrorKlass.hpp"
2223N/A#include "oops/instanceOop.hpp"
2223N/A#include "oops/oop.inline.hpp"
2223N/A#include "oops/symbol.hpp"
2223N/A#include "runtime/handles.inline.hpp"
2223N/A#ifndef SERIALGC
2223N/A#include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
2223N/A#include "gc_implementation/g1/g1OopClosures.inline.hpp"
2223N/A#include "gc_implementation/g1/g1RemSet.inline.hpp"
2223N/A#include "gc_implementation/g1/heapRegionSeq.inline.hpp"
2223N/A#include "gc_implementation/parNew/parOopClosures.inline.hpp"
2223N/A#include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp"
2223N/A#include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
2223N/A#include "oops/oop.pcgc.inline.hpp"
2223N/A#endif
2223N/A
2223N/Aint instanceMirrorKlass::_offset_of_static_fields = 0;
2223N/A
2223N/A#ifdef ASSERT
2223N/Atemplate <class T> void assert_is_in(T *p) {
2223N/A T heap_oop = oopDesc::load_heap_oop(p);
2223N/A if (!oopDesc::is_null(heap_oop)) {
2223N/A oop o = oopDesc::decode_heap_oop_not_null(heap_oop);
2223N/A assert(Universe::heap()->is_in(o), "should be in heap");
2223N/A }
2223N/A}
2223N/Atemplate <class T> void assert_is_in_closed_subset(T *p) {
2223N/A T heap_oop = oopDesc::load_heap_oop(p);
2223N/A if (!oopDesc::is_null(heap_oop)) {
2223N/A oop o = oopDesc::decode_heap_oop_not_null(heap_oop);
2223N/A assert(Universe::heap()->is_in_closed_subset(o), "should be in closed");
2223N/A }
2223N/A}
2223N/Atemplate <class T> void assert_is_in_reserved(T *p) {
2223N/A T heap_oop = oopDesc::load_heap_oop(p);
2223N/A if (!oopDesc::is_null(heap_oop)) {
2223N/A oop o = oopDesc::decode_heap_oop_not_null(heap_oop);
2223N/A assert(Universe::heap()->is_in_reserved(o), "should be in reserved");
2223N/A }
2223N/A}
2223N/Atemplate <class T> void assert_nothing(T *p) {}
2223N/A
2223N/A#else
2223N/Atemplate <class T> void assert_is_in(T *p) {}
2223N/Atemplate <class T> void assert_is_in_closed_subset(T *p) {}
2223N/Atemplate <class T> void assert_is_in_reserved(T *p) {}
2223N/Atemplate <class T> void assert_nothing(T *p) {}
2223N/A#endif // ASSERT
2223N/A
2223N/A#define InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE( \
2223N/A T, start_p, count, do_oop, \
2223N/A assert_fn) \
2223N/A{ \
2223N/A T* p = (T*)(start_p); \
2223N/A T* const end = p + (count); \
2223N/A while (p < end) { \
2223N/A (assert_fn)(p); \
2223N/A do_oop; \
2223N/A ++p; \
2223N/A } \
2223N/A}
2223N/A
2223N/A#define InstanceMirrorKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \
2223N/A T, start_p, count, low, high, \
2223N/A do_oop, assert_fn) \
2223N/A{ \
2223N/A T* const l = (T*)(low); \
2223N/A T* const h = (T*)(high); \
2223N/A assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && \
2223N/A mask_bits((intptr_t)h, sizeof(T)-1) == 0, \
2223N/A "bounded region must be properly aligned"); \
2223N/A T* p = (T*)(start_p); \
2223N/A T* end = p + (count); \
2223N/A if (p < l) p = l; \
2223N/A if (end > h) end = h; \
2223N/A while (p < end) { \
2223N/A (assert_fn)(p); \
2223N/A do_oop; \
2223N/A ++p; \
2223N/A } \
2223N/A}
2223N/A
2223N/A
2223N/A#define InstanceMirrorKlass_OOP_ITERATE(start_p, count, \
2223N/A do_oop, assert_fn) \
2223N/A{ \
2223N/A if (UseCompressedOops) { \
2223N/A InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \
2223N/A start_p, count, \
2223N/A do_oop, assert_fn) \
2223N/A } else { \
2223N/A InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE(oop, \
2223N/A start_p, count, \
2223N/A do_oop, assert_fn) \
2223N/A } \
2223N/A}
2223N/A
2223N/A// The following macros call specialized macros, passing either oop or
2223N/A// narrowOop as the specialization type. These test the UseCompressedOops
2223N/A// flag.
2223N/A#define InstanceMirrorKlass_BOUNDED_OOP_ITERATE(start_p, count, low, high, \
2223N/A do_oop, assert_fn) \
2223N/A{ \
2223N/A if (UseCompressedOops) { \
2223N/A InstanceMirrorKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \
2223N/A start_p, count, \
2223N/A low, high, \
2223N/A do_oop, assert_fn) \
2223N/A } else { \
2223N/A InstanceMirrorKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \
2223N/A start_p, count, \
2223N/A low, high, \
2223N/A do_oop, assert_fn) \
2223N/A } \
2223N/A}
2223N/A
2223N/A
2223N/Avoid instanceMirrorKlass::oop_follow_contents(oop obj) {
2223N/A instanceKlass::oop_follow_contents(obj);
2223N/A InstanceMirrorKlass_OOP_ITERATE( \
2223N/A start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \
2223N/A MarkSweep::mark_and_push(p), \
2223N/A assert_is_in_closed_subset)
2223N/A}
2223N/A
2223N/A#ifndef SERIALGC
2223N/Avoid instanceMirrorKlass::oop_follow_contents(ParCompactionManager* cm,
2223N/A oop obj) {
2223N/A instanceKlass::oop_follow_contents(cm, obj);
2223N/A InstanceMirrorKlass_OOP_ITERATE( \
2223N/A start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \
2223N/A PSParallelCompact::mark_and_push(cm, p), \
2223N/A assert_is_in)
2223N/A}
2223N/A#endif // SERIALGC
2223N/A
2223N/Aint instanceMirrorKlass::oop_adjust_pointers(oop obj) {
2223N/A int size = oop_size(obj);
2223N/A instanceKlass::oop_adjust_pointers(obj);
2223N/A InstanceMirrorKlass_OOP_ITERATE( \
2223N/A start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \
2223N/A MarkSweep::adjust_pointer(p), \
2223N/A assert_nothing)
2223N/A return size;
2223N/A}
2223N/A
2223N/A#define InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(T, nv_suffix) \
2223N/A InstanceMirrorKlass_OOP_ITERATE( \
2223N/A start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \
2223N/A (closure)->do_oop##nv_suffix(p), \
2223N/A assert_is_in_closed_subset) \
2223N/A return oop_size(obj); \
2223N/A
2223N/A#define InstanceMirrorKlass_BOUNDED_SPECIALIZED_OOP_ITERATE(T, nv_suffix, mr) \
2223N/A InstanceMirrorKlass_BOUNDED_OOP_ITERATE( \
2223N/A start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \
2223N/A mr.start(), mr.end(), \
2223N/A (closure)->do_oop##nv_suffix(p), \
2223N/A assert_is_in_closed_subset) \
2223N/A return oop_size(obj); \
2223N/A
2223N/A
2223N/A// Macro to define instanceMirrorKlass::oop_oop_iterate for virtual/nonvirtual for
2223N/A// all closures. Macros calling macros above for each oop size.
2223N/A
2223N/A#define InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \
2223N/A \
2223N/Aint instanceMirrorKlass:: \
2223N/Aoop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \
2223N/A /* Get size before changing pointers */ \
2223N/A SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk); \
2223N/A \
2223N/A instanceKlass::oop_oop_iterate##nv_suffix(obj, closure); \
2223N/A \
2223N/A if (UseCompressedOops) { \
2223N/A InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(narrowOop, nv_suffix); \
2223N/A } else { \
2223N/A InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(oop, nv_suffix); \
2223N/A } \
2223N/A}
2223N/A
2223N/A#ifndef SERIALGC
2223N/A#define InstanceMirrorKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \
2223N/A \
2223N/Aint instanceMirrorKlass:: \
2223N/Aoop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure) { \
2223N/A /* Get size before changing pointers */ \
2223N/A SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk); \
2223N/A \
2223N/A instanceKlass::oop_oop_iterate_backwards##nv_suffix(obj, closure); \
2223N/A \
2223N/A if (UseCompressedOops) { \
2223N/A InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(narrowOop, nv_suffix); \
2223N/A } else { \
2223N/A InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(oop, nv_suffix); \
2223N/A } \
2223N/A}
2223N/A#endif // !SERIALGC
2223N/A
2223N/A
2223N/A#define InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \
2223N/A \
2223N/Aint instanceMirrorKlass:: \
2223N/Aoop_oop_iterate##nv_suffix##_m(oop obj, \
2223N/A OopClosureType* closure, \
2223N/A MemRegion mr) { \
2223N/A SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk); \
2223N/A \
2223N/A instanceKlass::oop_oop_iterate##nv_suffix##_m(obj, closure, mr); \
2223N/A if (UseCompressedOops) { \
2223N/A InstanceMirrorKlass_BOUNDED_SPECIALIZED_OOP_ITERATE(narrowOop, nv_suffix, mr); \
2223N/A } else { \
2223N/A InstanceMirrorKlass_BOUNDED_SPECIALIZED_OOP_ITERATE(oop, nv_suffix, mr); \
2223N/A } \
2223N/A}
2223N/A
2223N/AALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN)
2223N/AALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN)
2223N/A#ifndef SERIALGC
2223N/AALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceMirrorKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN)
2223N/AALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceMirrorKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN)
2223N/A#endif // SERIALGC
2223N/AALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN_m)
2223N/AALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN_m)
2223N/A
2223N/A#ifndef SERIALGC
2223N/Avoid instanceMirrorKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
2223N/A instanceKlass::oop_push_contents(pm, obj);
2223N/A InstanceMirrorKlass_OOP_ITERATE( \
2223N/A start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj),\
2223N/A if (PSScavenge::should_scavenge(p)) { \
2223N/A pm->claim_or_forward_depth(p); \
2223N/A }, \
2223N/A assert_nothing )
2223N/A}
2223N/A
2223N/Aint instanceMirrorKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
2223N/A instanceKlass::oop_update_pointers(cm, obj);
2223N/A InstanceMirrorKlass_OOP_ITERATE( \
2223N/A start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj),\
2223N/A PSParallelCompact::adjust_pointer(p), \
2223N/A assert_nothing)
2223N/A return oop_size(obj);
2223N/A}
2223N/A#endif // SERIALGC
2223N/A
2223N/Aint instanceMirrorKlass::instance_size(KlassHandle k) {
2223N/A if (k() != NULL && k->oop_is_instance()) {
2223N/A return align_object_size(size_helper() + instanceKlass::cast(k())->static_field_size());
2223N/A }
2223N/A return size_helper();
2223N/A}
2223N/A
2223N/AinstanceOop instanceMirrorKlass::allocate_instance(KlassHandle k, TRAPS) {
2223N/A // Query before forming handle.
2223N/A int size = instance_size(k);
2223N/A KlassHandle h_k(THREAD, as_klassOop());
2845N/A instanceOop i = (instanceOop) CollectedHeap::Class_obj_allocate(h_k, size, k, CHECK_NULL);
2223N/A return i;
2223N/A}
2223N/A
2223N/Aint instanceMirrorKlass::oop_size(oop obj) const {
2223N/A return java_lang_Class::oop_size(obj);
2223N/A}
2223N/A
2223N/Aint instanceMirrorKlass::compute_static_oop_field_count(oop obj) {
2223N/A klassOop k = java_lang_Class::as_klassOop(obj);
2223N/A if (k != NULL && k->klass_part()->oop_is_instance()) {
2223N/A return instanceKlass::cast(k)->static_oop_field_count();
2223N/A }
2223N/A return 0;
2223N/A}