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2c9dfc73f9
Co-authored-by: Albert Mingkun Yang <ayang@openjdk.org> Co-authored-by: Per Liden <pliden@openjdk.org> Reviewed-by: ayang, stefank
75 lines
2.7 KiB
C++
75 lines
2.7 KiB
C++
/*
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* Copyright (c) 2017, 2020, 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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#include "precompiled.hpp"
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#include "gc/z/zForwarding.inline.hpp"
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#include "gc/z/zForwardingAllocator.inline.hpp"
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#include "gc/z/zRelocationSet.hpp"
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#include "gc/z/zStat.hpp"
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#include "memory/allocation.hpp"
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#include "utilities/debug.hpp"
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ZRelocationSet::ZRelocationSet() :
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_allocator(),
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_forwardings(NULL),
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_nforwardings(0) {}
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void ZRelocationSet::populate(ZPage* const* small, size_t nsmall,
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ZPage* const* medium, size_t nmedium,
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size_t forwarding_entries) {
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// Set relocation set length
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_nforwardings = nsmall + nmedium;
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// Initialize forwarding allocator to have room for the
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// relocation set, all forwardings, and all forwarding entries.
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const size_t relocation_set_size = _nforwardings * sizeof(ZForwarding*);
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const size_t forwardings_size = _nforwardings * sizeof(ZForwarding);
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const size_t forwarding_entries_size = forwarding_entries * sizeof(ZForwardingEntry);
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_allocator.reset(relocation_set_size + forwardings_size + forwarding_entries_size);
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// Allocate relocation set
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_forwardings = new (_allocator.alloc(relocation_set_size)) ZForwarding*[_nforwardings];
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// Populate relocation set array
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size_t j = 0;
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// Populate medium pages
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for (size_t i = 0; i < nmedium; i++) {
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_forwardings[j++] = ZForwarding::alloc(&_allocator, medium[i]);
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}
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// Populate small pages
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for (size_t i = 0; i < nsmall; i++) {
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_forwardings[j++] = ZForwarding::alloc(&_allocator, small[i]);
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}
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assert(_allocator.is_full(), "Should be full");
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// Update statistics
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ZStatRelocation::set_at_populate_relocation_set(_allocator.size());
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}
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void ZRelocationSet::reset() {
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_nforwardings = 0;
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}
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