1/*
2 * Copyright (c) 2015, 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_RUNTIME_FLAGS_JVMFLAGWRITEABLELIST_HPP
26#define SHARE_RUNTIME_FLAGS_JVMFLAGWRITEABLELIST_HPP
27
28#include "utilities/growableArray.hpp"
29
30class JVMFlagWriteable : public CHeapObj<mtArguments> {
31public:
32 enum WriteableType {
33 // can be set without any limits
34 Always = 0,
35 // can only be set once, either via command lines or during runtime
36 Once = 1,
37 // can only be set on command line (multiple times allowed)
38 CommandLineOnly = 2
39 };
40private:
41 const char* _name;
42 WriteableType _type;
43 bool _writeable;
44 bool _startup_done;
45public:
46 // the "name" argument must be a string literal
47 JVMFlagWriteable(const char* name, WriteableType type) { _name=name; _type=type; _writeable=true; _startup_done=false; }
48 ~JVMFlagWriteable() {}
49 const char* name() { return _name; }
50 const WriteableType type() { return _type; }
51 bool is_writeable(void);
52 void mark_once(void);
53 void mark_startup(void);
54};
55
56class JVMFlagWriteableList : public AllStatic {
57 static GrowableArray<JVMFlagWriteable*>* _controls;
58public:
59 static void init();
60 static int length() { return (_controls != NULL) ? _controls->length() : 0; }
61 static JVMFlagWriteable* at(int i) { return (_controls != NULL) ? _controls->at(i) : NULL; }
62 static JVMFlagWriteable* find(const char* name);
63 static void add(JVMFlagWriteable* range) { _controls->append(range); }
64 static void mark_startup(void);
65};
66
67#endif // SHARE_RUNTIME_FLAGS_JVMFLAGWRITEABLELIST_HPP
68