hotspot/src/share/vm/gc_implementation/g1/g1RemSet.inline.hpp
author jwilhelm
Thu, 03 Oct 2013 21:36:29 +0200
changeset 20398 b206c580c45f
parent 11586 ccc217c177ee
child 24106 dae9277bdf2a
permissions -rw-r--r--
8025852: Remove unnecessary setters in collector policy classes Summary: Use instance variables directly within the collector policy classes and remove unused setters. Reviewed-by: tschatzl, jcoomes
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/*
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 * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_INLINE_HPP
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#define SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_INLINE_HPP
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#include "gc_implementation/g1/g1RemSet.hpp"
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#include "gc_implementation/g1/heapRegionRemSet.hpp"
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#include "oops/oop.inline.hpp"
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inline uint G1RemSet::n_workers() {
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  if (_g1->workers() != NULL) {
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    return _g1->workers()->total_workers();
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  } else {
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    return 1;
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  }
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}
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template <class T>
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inline void G1RemSet::write_ref(HeapRegion* from, T* p) {
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  par_write_ref(from, p, 0);
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}
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template <class T>
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inline void G1RemSet::par_write_ref(HeapRegion* from, T* p, int tid) {
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  oop obj = oopDesc::load_decode_heap_oop(p);
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#ifdef ASSERT
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  // can't do because of races
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  // assert(obj == NULL || obj->is_oop(), "expected an oop");
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  // Do the safe subset of is_oop
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  if (obj != NULL) {
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#ifdef CHECK_UNHANDLED_OOPS
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    oopDesc* o = obj.obj();
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#else
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    oopDesc* o = obj;
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#endif // CHECK_UNHANDLED_OOPS
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    assert((intptr_t)o % MinObjAlignmentInBytes == 0, "not oop aligned");
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    assert(Universe::heap()->is_in_reserved(obj), "must be in heap");
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  }
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#endif // ASSERT
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  assert(from == NULL || from->is_in_reserved(p), "p is not in from");
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  HeapRegion* to = _g1->heap_region_containing(obj);
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  if (to != NULL && from != to) {
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    assert(to->rem_set() != NULL, "Need per-region 'into' remsets.");
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    to->rem_set()->add_reference(p, tid);
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  }
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}
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template <class T>
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inline void UpdateRSOopClosure::do_oop_work(T* p) {
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  assert(_from != NULL, "from region must be non-NULL");
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  _rs->par_write_ref(_from, p, _worker_i);
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}
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template <class T>
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inline void UpdateRSetImmediate::do_oop_work(T* p) {
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  assert(_from->is_in_reserved(p), "paranoia");
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  T heap_oop = oopDesc::load_heap_oop(p);
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  if (!oopDesc::is_null(heap_oop) && !_from->is_survivor()) {
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    _g1_rem_set->par_write_ref(_from, p, 0);
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  }
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}
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#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_INLINE_HPP