--- /dev/null Fri Mar 18 14:58:41 2011 +++ new/src/share/vm/oops/instanceMirrorKlass.cpp Fri Mar 18 14:58:41 2011 @@ -0,0 +1,313 @@ +/* + * Copyright (c) 2011, 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. + * + */ + +#include "precompiled.hpp" +#include "classfile/javaClasses.hpp" +#include "classfile/systemDictionary.hpp" +#include "gc_implementation/shared/markSweep.inline.hpp" +#include "gc_interface/collectedHeap.inline.hpp" +#include "memory/genOopClosures.inline.hpp" +#include "memory/oopFactory.hpp" +#include "memory/permGen.hpp" +#include "oops/instanceKlass.hpp" +#include "oops/instanceMirrorKlass.hpp" +#include "oops/instanceOop.hpp" +#include "oops/oop.inline.hpp" +#include "oops/symbol.hpp" +#include "runtime/handles.inline.hpp" +#ifndef SERIALGC +#include "gc_implementation/g1/g1CollectedHeap.inline.hpp" +#include "gc_implementation/g1/g1OopClosures.inline.hpp" +#include "gc_implementation/g1/g1RemSet.inline.hpp" +#include "gc_implementation/g1/heapRegionSeq.inline.hpp" +#include "gc_implementation/parNew/parOopClosures.inline.hpp" +#include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" +#include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" +#include "oops/oop.pcgc.inline.hpp" +#endif + +int instanceMirrorKlass::_offset_of_static_fields = 0; + +#ifdef ASSERT +template void assert_is_in(T *p) { + T heap_oop = oopDesc::load_heap_oop(p); + if (!oopDesc::is_null(heap_oop)) { + oop o = oopDesc::decode_heap_oop_not_null(heap_oop); + assert(Universe::heap()->is_in(o), "should be in heap"); + } +} +template void assert_is_in_closed_subset(T *p) { + T heap_oop = oopDesc::load_heap_oop(p); + if (!oopDesc::is_null(heap_oop)) { + oop o = oopDesc::decode_heap_oop_not_null(heap_oop); + assert(Universe::heap()->is_in_closed_subset(o), "should be in closed"); + } +} +template void assert_is_in_reserved(T *p) { + T heap_oop = oopDesc::load_heap_oop(p); + if (!oopDesc::is_null(heap_oop)) { + oop o = oopDesc::decode_heap_oop_not_null(heap_oop); + assert(Universe::heap()->is_in_reserved(o), "should be in reserved"); + } +} +template void assert_nothing(T *p) {} + +#else +template void assert_is_in(T *p) {} +template void assert_is_in_closed_subset(T *p) {} +template void assert_is_in_reserved(T *p) {} +template void assert_nothing(T *p) {} +#endif // ASSERT + +#define InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE( \ + T, start_p, count, do_oop, \ + assert_fn) \ +{ \ + T* p = (T*)(start_p); \ + T* const end = p + (count); \ + while (p < end) { \ + (assert_fn)(p); \ + do_oop; \ + ++p; \ + } \ +} + +#define InstanceMirrorKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \ + T, start_p, count, low, high, \ + do_oop, assert_fn) \ +{ \ + T* const l = (T*)(low); \ + T* const h = (T*)(high); \ + 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"); \ + T* p = (T*)(start_p); \ + T* end = p + (count); \ + if (p < l) p = l; \ + if (end > h) end = h; \ + while (p < end) { \ + (assert_fn)(p); \ + do_oop; \ + ++p; \ + } \ +} + + +#define InstanceMirrorKlass_OOP_ITERATE(start_p, count, \ + do_oop, assert_fn) \ +{ \ + if (UseCompressedOops) { \ + InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \ + start_p, count, \ + do_oop, assert_fn) \ + } else { \ + InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE(oop, \ + start_p, count, \ + do_oop, assert_fn) \ + } \ +} + +// The following macros call specialized macros, passing either oop or +// narrowOop as the specialization type. These test the UseCompressedOops +// flag. +#define InstanceMirrorKlass_BOUNDED_OOP_ITERATE(start_p, count, low, high, \ + do_oop, assert_fn) \ +{ \ + if (UseCompressedOops) { \ + InstanceMirrorKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ + start_p, count, \ + low, high, \ + do_oop, assert_fn) \ + } else { \ + InstanceMirrorKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ + start_p, count, \ + low, high, \ + do_oop, assert_fn) \ + } \ +} + + +void instanceMirrorKlass::oop_follow_contents(oop obj) { + instanceKlass::oop_follow_contents(obj); + InstanceMirrorKlass_OOP_ITERATE( \ + start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \ + MarkSweep::mark_and_push(p), \ + assert_is_in_closed_subset) +} + +#ifndef SERIALGC +void instanceMirrorKlass::oop_follow_contents(ParCompactionManager* cm, + oop obj) { + instanceKlass::oop_follow_contents(cm, obj); + InstanceMirrorKlass_OOP_ITERATE( \ + start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \ + PSParallelCompact::mark_and_push(cm, p), \ + assert_is_in) +} +#endif // SERIALGC + +int instanceMirrorKlass::oop_adjust_pointers(oop obj) { + int size = oop_size(obj); + instanceKlass::oop_adjust_pointers(obj); + InstanceMirrorKlass_OOP_ITERATE( \ + start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \ + MarkSweep::adjust_pointer(p), \ + assert_nothing) + return size; +} + +#define InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(T, nv_suffix) \ + InstanceMirrorKlass_OOP_ITERATE( \ + start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \ + (closure)->do_oop##nv_suffix(p), \ + assert_is_in_closed_subset) \ + return oop_size(obj); \ + +#define InstanceMirrorKlass_BOUNDED_SPECIALIZED_OOP_ITERATE(T, nv_suffix, mr) \ + InstanceMirrorKlass_BOUNDED_OOP_ITERATE( \ + start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \ + mr.start(), mr.end(), \ + (closure)->do_oop##nv_suffix(p), \ + assert_is_in_closed_subset) \ + return oop_size(obj); \ + + +// Macro to define instanceMirrorKlass::oop_oop_iterate for virtual/nonvirtual for +// all closures. Macros calling macros above for each oop size. + +#define InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ + \ +int instanceMirrorKlass:: \ +oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ + /* Get size before changing pointers */ \ + SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk); \ + \ + instanceKlass::oop_oop_iterate##nv_suffix(obj, closure); \ + \ + if (UseCompressedOops) { \ + InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(narrowOop, nv_suffix); \ + } else { \ + InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(oop, nv_suffix); \ + } \ +} + +#ifndef SERIALGC +#define InstanceMirrorKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ + \ +int instanceMirrorKlass:: \ +oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure) { \ + /* Get size before changing pointers */ \ + SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk); \ + \ + instanceKlass::oop_oop_iterate_backwards##nv_suffix(obj, closure); \ + \ + if (UseCompressedOops) { \ + InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(narrowOop, nv_suffix); \ + } else { \ + InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(oop, nv_suffix); \ + } \ +} +#endif // !SERIALGC + + +#define InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ + \ +int instanceMirrorKlass:: \ +oop_oop_iterate##nv_suffix##_m(oop obj, \ + OopClosureType* closure, \ + MemRegion mr) { \ + SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk); \ + \ + instanceKlass::oop_oop_iterate##nv_suffix##_m(obj, closure, mr); \ + if (UseCompressedOops) { \ + InstanceMirrorKlass_BOUNDED_SPECIALIZED_OOP_ITERATE(narrowOop, nv_suffix, mr); \ + } else { \ + InstanceMirrorKlass_BOUNDED_SPECIALIZED_OOP_ITERATE(oop, nv_suffix, mr); \ + } \ +} + +ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN) +ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN) +#ifndef SERIALGC +ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceMirrorKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) +ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceMirrorKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) +#endif // SERIALGC +ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN_m) +ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN_m) + +#ifndef SERIALGC +void instanceMirrorKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { + instanceKlass::oop_push_contents(pm, obj); + InstanceMirrorKlass_OOP_ITERATE( \ + start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj),\ + if (PSScavenge::should_scavenge(p)) { \ + pm->claim_or_forward_depth(p); \ + }, \ + assert_nothing ) +} + +int instanceMirrorKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { + instanceKlass::oop_update_pointers(cm, obj); + InstanceMirrorKlass_OOP_ITERATE( \ + start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj),\ + PSParallelCompact::adjust_pointer(p), \ + assert_nothing) + return oop_size(obj); +} +#endif // SERIALGC + +int instanceMirrorKlass::instance_size(KlassHandle k) { + if (k() != NULL && k->oop_is_instance()) { + return align_object_size(size_helper() + instanceKlass::cast(k())->static_field_size()); + } + return size_helper(); +} + +instanceOop instanceMirrorKlass::allocate_instance(KlassHandle k, TRAPS) { + // Query before forming handle. + int size = instance_size(k); + KlassHandle h_k(THREAD, as_klassOop()); + instanceOop i; + + if (JavaObjectsInPerm) { + i = (instanceOop) CollectedHeap::permanent_obj_allocate(h_k, size, CHECK_NULL); + } else { + assert(ScavengeRootsInCode > 0, "must be"); + i = (instanceOop) CollectedHeap::obj_allocate(h_k, size, CHECK_NULL); + } + + return i; +} + +int instanceMirrorKlass::oop_size(oop obj) const { + return java_lang_Class::oop_size(obj); +} + +int instanceMirrorKlass::compute_static_oop_field_count(oop obj) { + klassOop k = java_lang_Class::as_klassOop(obj); + if (k != NULL && k->klass_part()->oop_is_instance()) { + return instanceKlass::cast(k)->static_oop_field_count(); + } + return 0; +}