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1 /* |
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2 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 #ifndef SHARE_VM_RUNTIME_COMMANDLINEFLAGWRITEABLE_HPP |
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26 #define SHARE_VM_RUNTIME_COMMANDLINEFLAGWRITEABLE_HPP |
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27 |
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28 #include "runtime/globals.hpp" |
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29 #include "utilities/growableArray.hpp" |
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30 |
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31 class CommandLineFlagWriteable : public CHeapObj<mtArguments> { |
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32 public: |
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33 enum WriteableType { |
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34 // can be set without any limits |
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35 Always = 0, |
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36 // can only be set once, either via command lines or during runtime |
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37 Once = 1, |
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38 // can only be set on command line (multiple times allowed) |
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39 CommandLineOnly = 2 |
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40 }; |
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41 private: |
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42 const char* _name; |
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43 WriteableType _type; |
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44 bool _writeable; |
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45 bool _startup_done; |
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46 public: |
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47 // the "name" argument must be a string literal |
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48 CommandLineFlagWriteable(const char* name, WriteableType type) { _name=name; _type=type; _writeable=true; _startup_done=false; } |
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49 ~CommandLineFlagWriteable() {} |
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50 const char* name() { return _name; } |
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51 const WriteableType type() { return _type; } |
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52 bool is_writeable(void); |
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53 void mark_once(void); |
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54 void mark_startup(void); |
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55 }; |
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56 |
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57 class CommandLineFlagWriteableList : public AllStatic { |
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58 static GrowableArray<CommandLineFlagWriteable*>* _controls; |
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59 public: |
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60 static void init(); |
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61 static int length() { return (_controls != NULL) ? _controls->length() : 0; } |
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62 static CommandLineFlagWriteable* at(int i) { return (_controls != NULL) ? _controls->at(i) : NULL; } |
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63 static CommandLineFlagWriteable* find(const char* name); |
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64 static void add(CommandLineFlagWriteable* range) { _controls->append(range); } |
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65 static void mark_startup(void); |
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66 }; |
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67 |
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68 #endif // SHARE_VM_RUNTIME_COMMANDLINEFLAGWRITEABLE_HPP |