commandLineFlagRangeList.hpp revision 11219:137319683e94 
1/*
2 * Copyright (c) 2015, 2016, 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.
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23 */
24
25#ifndef SHARE_VM_RUNTIME_COMMANDLINEFLAGRANGELIST_HPP
26#define SHARE_VM_RUNTIME_COMMANDLINEFLAGRANGELIST_HPP
27
28#include "memory/metaspaceShared.hpp"
29#include "runtime/globals.hpp"
30#include "utilities/growableArray.hpp"
31
32/*
33 * Here we have a mechanism for extracting ranges specified in flag macro tables.
34 *
35 * The specified ranges are used to verify that flags have valid values.
36 *
37 * An example of a range is "min <= flag <= max". Both "min" and "max" must be
38 * constant and can not change. If either "min" or "max" can change,
39 * then we need to use constraint instead.
40 */
41
42class CommandLineError : public AllStatic {
43public:
44  static void print(bool verbose, const char* msg, ...);
45};
46
47class CommandLineFlagRange : public CHeapObj<mtArguments> {
48private:
49  const char* _name;
50public:
51  // the "name" argument must be a string literal
52  CommandLineFlagRange(const char* name) { _name=name; }
53  ~CommandLineFlagRange() {}
54  const char* name() { return _name; }
55  virtual Flag::Error check_int(int value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }
56  virtual Flag::Error check_intx(intx value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }
57  virtual Flag::Error check_uint(uint value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }
58  virtual Flag::Error check_uintx(uintx value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }
59  virtual Flag::Error check_uint64_t(uint64_t value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }
60  virtual Flag::Error check_size_t(size_t value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }
61  virtual Flag::Error check_double(double value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }
62  virtual void print(outputStream* st) { ; }
63};
64
65class CommandLineFlagRangeList : public AllStatic {
66  static GrowableArray<CommandLineFlagRange*>* _ranges;
67public:
68  static void init();
69  static int length() { return (_ranges != NULL) ? _ranges->length() : 0; }
70  static CommandLineFlagRange* at(int i) { return (_ranges != NULL) ? _ranges->at(i) : NULL; }
71  static CommandLineFlagRange* find(const char* name);
72  static void add(CommandLineFlagRange* range) { _ranges->append(range); }
73  static void print(outputStream* st, const char* name, RangeStrFunc default_range_str_func);
74  // Check the final values of all flags for ranges.
75  static bool check_ranges();
76};
77
78#endif // SHARE_VM_RUNTIME_COMMANDLINEFLAGRANGELIST_HPP
79