Mercurial > hg > graal-compiler
view src/share/vm/gc_implementation/g1/g1RemSet.inline.hpp @ 1782:f353275af40e
6981773: incorrect fill value with OptimizeFill
Reviewed-by: kvn, twisti
author | never |
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date | Thu, 02 Sep 2010 11:40:02 -0700 |
parents | a03ae377b2e8 |
children | c32059ef4dc0 |
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/* * Copyright (c) 2001, 2010, 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. * */ inline size_t G1RemSet::n_workers() { if (_g1->workers() != NULL) { return _g1->workers()->total_workers(); } else { return 1; } } template <class T> inline void HRInto_G1RemSet::write_ref_nv(HeapRegion* from, T* p) { par_write_ref_nv(from, p, 0); } inline bool HRInto_G1RemSet::self_forwarded(oop obj) { bool result = (obj->is_forwarded() && (obj->forwardee()== obj)); return result; } template <class T> inline void HRInto_G1RemSet::par_write_ref_nv(HeapRegion* from, T* p, int tid) { oop obj = oopDesc::load_decode_heap_oop(p); #ifdef ASSERT // can't do because of races // assert(obj == NULL || obj->is_oop(), "expected an oop"); // Do the safe subset of is_oop if (obj != NULL) { #ifdef CHECK_UNHANDLED_OOPS oopDesc* o = obj.obj(); #else oopDesc* o = obj; #endif // CHECK_UNHANDLED_OOPS assert((intptr_t)o % MinObjAlignmentInBytes == 0, "not oop aligned"); assert(Universe::heap()->is_in_reserved(obj), "must be in heap"); } #endif // ASSERT assert(from == NULL || from->is_in_reserved(p), "p is not in from"); HeapRegion* to = _g1->heap_region_containing(obj); // The test below could be optimized by applying a bit op to to and from. if (to != NULL && from != NULL && from != to) { // The _traversal_in_progress flag is true during the collection pause, // false during the evacuation failure handling. This should avoid a // potential loop if we were to add the card containing 'p' to the DCQS // that's used to regenerate the remembered sets for the collection set, // in the event of an evacuation failure, here. The UpdateRSImmediate // closure will eventally call this routine. if (_traversal_in_progress && to->in_collection_set() && !self_forwarded(obj)) { assert(_cset_rs_update_cl[tid] != NULL, "should have been set already"); _cset_rs_update_cl[tid]->do_oop(p); // Deferred updates to the CSet are either discarded (in the normal case), // or processed (if an evacuation failure occurs) at the end // of the collection. // See HRInto_G1RemSet::cleanup_after_oops_into_collection_set_do(). } else { #if G1_REM_SET_LOGGING gclog_or_tty->print_cr("Adding " PTR_FORMAT " (" PTR_FORMAT ") to RS" " for region [" PTR_FORMAT ", " PTR_FORMAT ")", p, obj, to->bottom(), to->end()); #endif assert(to->rem_set() != NULL, "Need per-region 'into' remsets."); to->rem_set()->add_reference(p, tid); } } } template <class T> inline void UpdateRSOopClosure::do_oop_work(T* p) { assert(_from != NULL, "from region must be non-NULL"); _rs->par_write_ref(_from, p, _worker_i); } template <class T> inline void UpdateRSetImmediate::do_oop_work(T* p) { assert(_from->is_in_reserved(p), "paranoia"); T heap_oop = oopDesc::load_heap_oop(p); if (!oopDesc::is_null(heap_oop) && !_from->is_survivor()) { _g1_rem_set->par_write_ref(_from, p, 0); } }