59 lines
2.2 KiB
C++
59 lines
2.2 KiB
C++
/*
|
|
* Copyright (c) 2017, 2018, 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.
|
|
*
|
|
*/
|
|
|
|
#include "precompiled.hpp"
|
|
#include "gc/g1/g1CollectedHeap.inline.hpp"
|
|
#include "gc/g1/g1ConcurrentMarkBitMap.inline.hpp"
|
|
#include "gc/g1/heapRegion.hpp"
|
|
#include "memory/virtualspace.hpp"
|
|
|
|
void G1CMBitMap::initialize(MemRegion heap, G1RegionToSpaceMapper* storage) {
|
|
MarkBitMap::initialize(heap, storage->reserved());
|
|
storage->set_mapping_changed_listener(&_listener);
|
|
}
|
|
|
|
void G1CMBitMapMappingChangedListener::on_commit(uint start_region, size_t num_regions, bool zero_filled) {
|
|
if (zero_filled) {
|
|
return;
|
|
}
|
|
// We need to clear the bitmap on commit, removing any existing information.
|
|
MemRegion mr(G1CollectedHeap::heap()->bottom_addr_for_region(start_region), num_regions * HeapRegion::GrainWords);
|
|
_bm->clear_range(mr);
|
|
}
|
|
|
|
void G1CMBitMap::clear_region(HeapRegion* region) {
|
|
if (!region->is_empty()) {
|
|
MemRegion mr(region->bottom(), region->top());
|
|
clear_range(mr);
|
|
}
|
|
}
|
|
|
|
#ifdef ASSERT
|
|
void G1CMBitMap::check_mark(HeapWord* addr) {
|
|
assert(G1CollectedHeap::heap()->is_in_exact(addr),
|
|
"Trying to access bitmap " PTR_FORMAT " for address " PTR_FORMAT " not in the heap.",
|
|
p2i(this), p2i(addr));
|
|
}
|
|
#endif
|