Mercurial > hg > graal-jvmci-8
view src/share/vm/gc_implementation/shared/markSweep.inline.hpp @ 807:d44bdab1c03d
6843694: G1: assert(index < _vs.committed_size(),"bad index"), g1BlockOffsetTable.inline.hpp:55
Summary: For heaps larger than 32Gb, the number of heap regions overflows the data type used to hold the region index in the SparsePRT structure. Changed the region indexes, card indexes, and RSet hash table buckets to ints and added some size overflow guarantees.
Reviewed-by: ysr, tonyp
author | johnc |
---|---|
date | Thu, 11 Jun 2009 17:19:33 -0700 |
parents | a4b729f5b611 |
children | 2a1472c30599 |
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/* * Copyright 2000-2008 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ inline void MarkSweep::mark_object(oop obj) { // some marks may contain information we need to preserve so we store them away // and overwrite the mark. We'll restore it at the end of markSweep. markOop mark = obj->mark(); obj->set_mark(markOopDesc::prototype()->set_marked()); if (mark->must_be_preserved(obj)) { preserve_mark(obj, mark); } } template <class T> inline void MarkSweep::follow_root(T* p) { assert(!Universe::heap()->is_in_reserved(p), "roots shouldn't be things within the heap"); #ifdef VALIDATE_MARK_SWEEP if (ValidateMarkSweep) { guarantee(!_root_refs_stack->contains(p), "should only be in here once"); _root_refs_stack->push(p); } #endif T heap_oop = oopDesc::load_heap_oop(p); if (!oopDesc::is_null(heap_oop)) { oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); if (!obj->mark()->is_marked()) { mark_object(obj); obj->follow_contents(); } } follow_stack(); } template <class T> inline void MarkSweep::mark_and_follow(T* p) { // assert(Universe::heap()->is_in_reserved(p), "should be in object space"); T heap_oop = oopDesc::load_heap_oop(p); if (!oopDesc::is_null(heap_oop)) { oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); if (!obj->mark()->is_marked()) { mark_object(obj); obj->follow_contents(); } } } template <class T> inline void MarkSweep::mark_and_push(T* p) { // assert(Universe::heap()->is_in_reserved(p), "should be in object space"); T heap_oop = oopDesc::load_heap_oop(p); if (!oopDesc::is_null(heap_oop)) { oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); if (!obj->mark()->is_marked()) { mark_object(obj); _marking_stack->push(obj); } } } template <class T> inline void MarkSweep::adjust_pointer(T* p, bool isroot) { T heap_oop = oopDesc::load_heap_oop(p); if (!oopDesc::is_null(heap_oop)) { oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); oop new_obj = oop(obj->mark()->decode_pointer()); assert(new_obj != NULL || // is forwarding ptr? obj->mark() == markOopDesc::prototype() || // not gc marked? (UseBiasedLocking && obj->mark()->has_bias_pattern()) || // not gc marked? obj->is_shared(), // never forwarded? "should be forwarded"); if (new_obj != NULL) { assert(Universe::heap()->is_in_reserved(new_obj), "should be in object space"); oopDesc::encode_store_heap_oop_not_null(p, new_obj); } } VALIDATE_MARK_SWEEP_ONLY(track_adjusted_pointer(p, isroot)); } template <class T> inline void MarkSweep::KeepAliveClosure::do_oop_work(T* p) { #ifdef VALIDATE_MARK_SWEEP if (ValidateMarkSweep) { if (!Universe::heap()->is_in_reserved(p)) { _root_refs_stack->push(p); } else { _other_refs_stack->push(p); } } #endif mark_and_push(p); }