1/*
2 * Copyright (c) 2016, 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
21 * questions.
22 *
23 */
24
25#ifndef SHARE_JFR_WRITERS_JFRSTORAGEHOST_HPP
26#define SHARE_JFR_WRITERS_JFRSTORAGEHOST_HPP
27
28#include "jfr/writers/jfrPosition.inline.hpp"
29
30template <typename Adapter, typename AP> // Adapter and AllocationPolicy
31class StorageHost : public Position<AP> {
32 public:
33 typedef typename Adapter::StorageType StorageType;
34 private:
35 Adapter _adapter;
36
37 protected:
38 void bind();
39 void soft_reset();
40 void hard_reset();
41 void cancel();
42 bool is_backed();
43 bool accommodate(size_t used, size_t requested);
44 void commit();
45 void release();
46 StorageHost(StorageType* storage, Thread* thread);
47 StorageHost(StorageType* storage, size_t size);
48 StorageHost(Thread* thread);
49
50 public:
51 StorageType* storage();
52 bool is_valid() const;
53 void set_storage(StorageType* storage);
54 void flush();
55 void seek(intptr_t offset);
56};
57
58#endif // SHARE_JFR_WRITERS_JFRSTORAGEHOST_HPP
59