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 41 class JVMFlagRange : public CHeapObj<mtArguments> { 42 private: 43 const char* _name; 44 public: 45 // the "name" argument must be a string literal JVMFlagRange(const char * name)46 JVMFlagRange(const char* name) { _name=name; } ~JVMFlagRange()47 ~JVMFlagRange() {} name()48 const char* name() { return _name; } check(bool verbose=true)49 virtual JVMFlag::Error check(bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; } check_int(int value,bool verbose=true)50 virtual JVMFlag::Error check_int(int value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; } check_intx(intx value,bool verbose=true)51 virtual JVMFlag::Error check_intx(intx value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; } check_uint(uint value,bool verbose=true)52 virtual JVMFlag::Error check_uint(uint value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; } check_uintx(uintx value,bool verbose=true)53 virtual JVMFlag::Error check_uintx(uintx value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; } check_uint64_t(uint64_t value,bool verbose=true)54 virtual JVMFlag::Error check_uint64_t(uint64_t value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; } check_size_t(size_t value,bool verbose=true)55 virtual JVMFlag::Error check_size_t(size_t value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; } check_double(double value,bool verbose=true)56 virtual JVMFlag::Error check_double(double value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; } print(outputStream * st)57 virtual void print(outputStream* st) { ; } 58 }; 59 60 class JVMFlagRangeList : public AllStatic { 61 static GrowableArray<JVMFlagRange*>* _ranges; 62 public: 63 static void init(); length()64 static int length() { return (_ranges != NULL) ? _ranges->length() : 0; } at(int i)65 static JVMFlagRange* at(int i) { return (_ranges != NULL) ? _ranges->at(i) : NULL; } 66 static JVMFlagRange* find(const char* name); add(JVMFlagRange * range)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