1 /* 2 * Copyright (c) 2015, 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_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 42 class CommandLineError : public AllStatic { 43 public: 44 static void print(bool verbose, const char* msg, ...); 45 }; 46 47 class CommandLineFlagRange : public CHeapObj<mtInternal> { 48 private: 49 const char* _name; 50 public: 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 65 class CommandLineFlagRangeList : public AllStatic { 66 static GrowableArray<CommandLineFlagRange*>* _ranges; 67 public: 68 static void init(); 69 static void add_globals_ext(); 70 static int length() { return (_ranges != NULL) ? _ranges->length() : 0; } 71 static CommandLineFlagRange* at(int i) { return (_ranges != NULL) ? _ranges->at(i) : NULL; } 72 static CommandLineFlagRange* find(const char* name); 73 static void add(CommandLineFlagRange* range) { _ranges->append(range); } 74 static void print(const char* name, outputStream* st, bool unspecified = false); 75 // Check the final values of all flags for ranges. 76 static bool check_ranges(); 77 }; 78 79 #endif // SHARE_VM_RUNTIME_COMMANDLINEFLAGRANGELIST_HPP