1/*
2 * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
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23 */
24
25#ifndef SHARE_GC_PARALLEL_PSFILEBACKEDVIRTUALSPACE_HPP
26#define SHARE_GC_PARALLEL_PSFILEBACKEDVIRTUALSPACE_HPP
27
28#include "gc/parallel/psVirtualspace.hpp"
29
30class PSFileBackedVirtualSpace : public PSVirtualSpace {
31private:
32 const char* _file_path;
33 int _fd;
34 bool _mapping_succeeded;
35public:
36 PSFileBackedVirtualSpace(ReservedSpace rs, size_t alignment, const char* file_path);
37
38 bool initialize();
39 bool expand_by(size_t bytes);
40 bool shrink_by(size_t bytes);
41 size_t expand_into(PSVirtualSpace* space, size_t bytes);
42 void release();
43};
44#endif // SHARE_GC_PARALLEL_PSFILEBACKEDVIRTUALSPACE_HPP
45