diff -r 15e026239a6c -r fcdb8e7ead8f src/hotspot/share/gc/cms/parOopClosures.inline.hpp --- a/src/hotspot/share/gc/cms/parOopClosures.inline.hpp Fri Nov 08 14:54:17 2019 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,146 +0,0 @@ -/* - * Copyright (c) 2007, 2019, 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_GC_CMS_PAROOPCLOSURES_INLINE_HPP -#define SHARE_GC_CMS_PAROOPCLOSURES_INLINE_HPP - -#include "gc/cms/cmsHeap.hpp" -#include "gc/cms/parNewGeneration.hpp" -#include "gc/cms/parOopClosures.hpp" -#include "gc/shared/cardTableRS.hpp" -#include "gc/shared/genOopClosures.inline.hpp" -#include "logging/log.hpp" -#include "logging/logStream.hpp" -#include "oops/access.inline.hpp" -#include "oops/compressedOops.inline.hpp" -#include "oops/oop.inline.hpp" - -template inline void ParScanWeakRefClosure::do_oop_work(T* p) { - oop obj = RawAccess::oop_load(p); - // weak references are sometimes scanned twice; must check - // that to-space doesn't already contain this object - if ((HeapWord*)obj < _boundary && !_g->to()->is_in_reserved(obj)) { - // we need to ensure that it is copied (see comment in - // ParScanClosure::do_oop_work). - Klass* objK = obj->klass(); - markWord m = obj->mark_raw(); - oop new_obj; - if (m.is_marked()) { // Contains forwarding pointer. - new_obj = ParNewGeneration::real_forwardee(obj); - } else { - size_t obj_sz = obj->size_given_klass(objK); - new_obj = ((ParNewGeneration*)_g)->copy_to_survivor_space(_par_scan_state, - obj, obj_sz, m); - } - RawAccess::oop_store(p, new_obj); - } -} - -inline void ParScanWeakRefClosure::do_oop(oop* p) { ParScanWeakRefClosure::do_oop_work(p); } -inline void ParScanWeakRefClosure::do_oop(narrowOop* p) { ParScanWeakRefClosure::do_oop_work(p); } - -template inline void ParScanClosure::par_do_barrier(T* p) { - assert(generation()->is_in_reserved(p), "expected ref in generation"); - oop obj = RawAccess::oop_load(p); - // If p points to a younger generation, mark the card. - if ((HeapWord*)obj < gen_boundary()) { - rs()->write_ref_field_gc_par(p, obj); - } -} - -template -inline void ParScanClosure::do_oop_work(T* p, - bool gc_barrier, - bool root_scan) { - assert((!CMSHeap::heap()->is_in_reserved(p) || - generation()->is_in_reserved(p)) - && (CMSHeap::heap()->is_young_gen(generation()) || gc_barrier), - "The gen must be right, and we must be doing the barrier " - "in older generations."); - T heap_oop = RawAccess<>::oop_load(p); - if (!CompressedOops::is_null(heap_oop)) { - oop obj = CompressedOops::decode_not_null(heap_oop); - if ((HeapWord*)obj < _boundary) { -#ifndef PRODUCT - if (_g->to()->is_in_reserved(obj)) { - Log(gc) log; - log.error("Scanning field (" PTR_FORMAT ") twice?", p2i(p)); - CMSHeap* heap = CMSHeap::heap(); - Space* sp = heap->space_containing(p); - oop obj = oop(sp->block_start(p)); - assert((HeapWord*)obj < (HeapWord*)p, "Error"); - log.error("Object: " PTR_FORMAT, p2i((void *)obj)); - log.error("-------"); - LogStream ls(log.error()); - obj->print_on(&ls); - log.error("-----"); - log.error("Heap:"); - log.error("-----"); - heap->print_on(&ls); - ShouldNotReachHere(); - } -#endif - // OK, we need to ensure that it is copied. - // We read the klass and mark in this order, so that we can reliably - // get the size of the object: if the mark we read is not a - // forwarding pointer, then the klass is valid: the klass is only - // overwritten with an overflow next pointer after the object is - // forwarded. - Klass* objK = obj->klass(); - markWord m = obj->mark_raw(); - oop new_obj; - if (m.is_marked()) { // Contains forwarding pointer. - new_obj = ParNewGeneration::real_forwardee(obj); - RawAccess::oop_store(p, new_obj); - log_develop_trace(gc, scavenge)("{%s %s ( " PTR_FORMAT " ) " PTR_FORMAT " -> " PTR_FORMAT " (%d)}", - "forwarded ", - new_obj->klass()->internal_name(), p2i(p), p2i((void *)obj), p2i((void *)new_obj), new_obj->size()); - } else { - size_t obj_sz = obj->size_given_klass(objK); - new_obj = _g->copy_to_survivor_space(_par_scan_state, obj, obj_sz, m); - RawAccess::oop_store(p, new_obj); - if (root_scan) { - // This may have pushed an object. If we have a root - // category with a lot of roots, can't let the queue get too - // full: - (void)_par_scan_state->trim_queues(10 * ParallelGCThreads); - } - } - if (is_scanning_a_cld()) { - do_cld_barrier(); - } else if (gc_barrier) { - // Now call parent closure - par_do_barrier(p); - } - } - } -} - -inline void ParScanWithBarrierClosure::do_oop(oop* p) { ParScanClosure::do_oop_work(p, true, false); } -inline void ParScanWithBarrierClosure::do_oop(narrowOop* p) { ParScanClosure::do_oop_work(p, true, false); } - -inline void ParScanWithoutBarrierClosure::do_oop(oop* p) { ParScanClosure::do_oop_work(p, false, false); } -inline void ParScanWithoutBarrierClosure::do_oop(narrowOop* p) { ParScanClosure::do_oop_work(p, false, false); } - -#endif // SHARE_GC_CMS_PAROOPCLOSURES_INLINE_HPP