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
21 * questions.
22 *
23 */
24
25#ifndef SHARE_RUNTIME_FLAGS_JVMFLAGRANGELIST_HPP
26#define SHARE_RUNTIME_FLAGS_JVMFLAGRANGELIST_HPP
27
28#include "runtime/flags/jvmFlag.hpp"
29#include "utilities/growableArray.hpp"
30
31/*
32 * Here we have a mechanism for extracting ranges specified in flag macro tables.
33 *
34 * The specified ranges are used to verify that flags have valid values.
35 *
36 * An example of a range is "min <= flag <= max". Both "min" and "max" must be
37 * constant and can not change. If either "min" or "max" can change,
38 * then we need to use constraint instead.
39 */
40
41class JVMFlagRange : public CHeapObj<mtArguments> {
42private:
43 const char* _name;
44public:
45 // the "name" argument must be a string literal
46 JVMFlagRange(const char* name) { _name=name; }
47 ~JVMFlagRange() {}
48 const char* name() { return _name; }
49 virtual JVMFlag::Error check(bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; }
50 virtual JVMFlag::Error check_int(int value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; }
51 virtual JVMFlag::Error check_intx(intx value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; }
52 virtual JVMFlag::Error check_uint(uint value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; }
53 virtual JVMFlag::Error check_uintx(uintx value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; }
54 virtual JVMFlag::Error check_uint64_t(uint64_t value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; }
55 virtual JVMFlag::Error check_size_t(size_t value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; }
56 virtual JVMFlag::Error check_double(double value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; }
57 virtual void print(outputStream* st) { ; }
58};
59
60class JVMFlagRangeList : public AllStatic {
61 static GrowableArray<JVMFlagRange*>* _ranges;
62public:
63 static void init();
64 static int length() { return (_ranges != NULL) ? _ranges->length() : 0; }
65 static JVMFlagRange* at(int i) { return (_ranges != NULL) ? _ranges->at(i) : NULL; }
66 static JVMFlagRange* find(const char* name);
67 static void add(JVMFlagRange* range) { _ranges->append(range); }
68 static void print(outputStream* st, const char* name, RangeStrFunc default_range_str_func);
69 // Check the final values of all flags for ranges.
70 static bool check_ranges();
71};
72
73#endif // SHARE_RUNTIME_FLAGS_JVMFLAGRANGELIST_HPP
74