diff -r 3cfab71d6c81 -r 5caa1d5f74c1 src/hotspot/share/gc/g1/g1FullGCOopClosures.inline.hpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/hotspot/share/gc/g1/g1FullGCOopClosures.inline.hpp Tue Nov 14 11:33:23 2017 +0100 @@ -0,0 +1,128 @@ +/* + * Copyright (c) 2017, 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_GC_G1_G1FULLGCOOPCLOSURES_INLINE_HPP +#define SHARE_VM_GC_G1_G1FULLGCOOPCLOSURES_INLINE_HPP + +#include "gc/g1/g1Allocator.hpp" +#include "gc/g1/g1ConcurrentMarkBitMap.inline.hpp" +#include "gc/g1/g1FullGCMarker.inline.hpp" +#include "gc/g1/g1FullGCOopClosures.hpp" +#include "gc/g1/heapRegionRemSet.hpp" +#include "memory/iterator.inline.hpp" + +template +inline void G1MarkAndPushClosure::do_oop_nv(T* p) { + _marker->mark_and_push(p); +} + +inline bool G1MarkAndPushClosure::do_metadata_nv() { + return true; +} + +inline void G1MarkAndPushClosure::do_klass_nv(Klass* k) { + _marker->follow_klass(k); +} + +inline void G1MarkAndPushClosure::do_cld_nv(ClassLoaderData* cld) { + _marker->follow_cld(cld); +} + +template inline oop G1AdjustClosure::adjust_pointer(T* p) { + T heap_oop = oopDesc::load_heap_oop(p); + if (oopDesc::is_null(heap_oop)) { + // NULL reference, return NULL. + return NULL; + } + + oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); + assert(Universe::heap()->is_in(obj), "should be in heap"); + if (G1ArchiveAllocator::is_archive_object(obj)) { + // Never forwarding archive objects, return current reference. + return obj; + } + + oop forwardee = obj->forwardee(); + if (forwardee == NULL) { + // Not forwarded, return current reference. + assert(obj->mark() == markOopDesc::prototype_for_object(obj) || // Correct mark + obj->mark()->must_be_preserved(obj) || // Will be restored by PreservedMarksSet + (UseBiasedLocking && obj->has_bias_pattern()), // Will be restored by BiasedLocking + "Must have correct prototype or be preserved, obj: " PTR_FORMAT ", mark: " PTR_FORMAT ", prototype: " PTR_FORMAT, + p2i(obj), p2i(obj->mark()), p2i(markOopDesc::prototype_for_object(obj))); + return obj; + } + + // Forwarded, update and return new reference. + assert(Universe::heap()->is_in_reserved(forwardee), "should be in object space"); + oopDesc::encode_store_heap_oop_not_null(p, forwardee); + return forwardee; +} + +template +inline void G1AdjustAndRebuildClosure::add_reference(T* from_field, oop reference, uint worker_id) { + if (HeapRegion::is_in_same_region(from_field, reference)) { + return; + } + _g1h->heap_region_containing(reference)->rem_set()->add_reference(from_field, worker_id); +} + +inline size_t G1AdjustAndRebuildClosure::calculate_compaction_delta(oop current, oop forwardee) { + return pointer_delta((HeapWord*)forwardee, (HeapWord*)current); +} + +template +inline T* G1AdjustAndRebuildClosure::add_compaction_delta(T* p) { + return (T*)((HeapWord*)p + _compaction_delta); +} + +template +void G1AdjustAndRebuildClosure::do_oop_nv(T* p) { + oop new_reference = G1AdjustClosure::adjust_pointer(p); + if (new_reference == NULL) { + return; + } + + // Update p using the calculated compaction delta to + // get the new field address. + T* new_field = add_compaction_delta(p); + // Update the remembered set. + add_reference(new_field, new_reference, _worker_id); +} + +inline int G1AdjustObjectClosure::adjust_object(oop obj) { + _closure->update_compaction_delta(obj); + return obj->oop_iterate_size(_closure); +} + +inline bool G1IsAliveClosure::do_object_b(oop p) { + return _bitmap->is_marked(p) || G1ArchiveAllocator::is_closed_archive_object(p); +} + +template +inline void G1FullKeepAliveClosure::do_oop_work(T* p) { + _marker->mark_and_push(p); +} + +#endif