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_COMMANDLINEFLAGCONSTRAINTLIST_HPP 26 #define SHARE_VM_RUNTIME_COMMANDLINEFLAGCONSTRAINTLIST_HPP 27 28 #include "runtime/globals.hpp" 29 #include "utilities/growableArray.hpp" 30 31 /* 32 * Here we have a mechanism for extracting constraints (as custom functions) for flags, 33 * which otherwise can not be expressed via simple range check, specified in flag macro tables. 34 * 35 * An example of a constraint is "flag1 < flag2" where both flag1 and flag2 can change. 36 * 37 * See runtime "runtime/commandLineFlagConstraintsCompiler.hpp", 38 * "runtime/commandLineFlagConstraintsGC.hpp" and 39 * "runtime/commandLineFlagConstraintsRuntime.hpp" for the functions themselves. 40 */ 41 42 typedef Flag::Error (*CommandLineFlagConstraintFunc_bool)(bool verbose, bool* value); 43 typedef Flag::Error (*CommandLineFlagConstraintFunc_int)(bool verbose, int* value); 44 typedef Flag::Error (*CommandLineFlagConstraintFunc_intx)(bool verbose, intx* value); 45 typedef Flag::Error (*CommandLineFlagConstraintFunc_uint)(bool verbose, uint* value); 46 typedef Flag::Error (*CommandLineFlagConstraintFunc_uintx)(bool verbose, uintx* value); 47 typedef Flag::Error (*CommandLineFlagConstraintFunc_uint64_t)(bool verbose, uint64_t* value); 48 typedef Flag::Error (*CommandLineFlagConstraintFunc_size_t)(bool verbose, size_t* value); 49 typedef Flag::Error (*CommandLineFlagConstraintFunc_double)(bool verbose, double* value); 50 51 class CommandLineFlagConstraint : public CHeapObj<mtInternal> { 52 private: 53 const char* _name; 54 public: 55 // the "name" argument must be a string literal 56 CommandLineFlagConstraint(const char* name) { _name=name; }; 57 ~CommandLineFlagConstraint() {}; 58 const char* name() { return _name; } 59 virtual Flag::Error apply_bool(bool* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }; 60 virtual Flag::Error apply_int(int* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }; 61 virtual Flag::Error apply_intx(intx* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }; 62 virtual Flag::Error apply_uint(uint* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }; 63 virtual Flag::Error apply_uintx(uintx* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }; 64 virtual Flag::Error apply_uint64_t(uint64_t* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }; 65 virtual Flag::Error apply_size_t(size_t* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }; 66 virtual Flag::Error apply_double(double* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }; 67 }; 68 69 class CommandLineFlagConstraintList : public AllStatic { 70 private: 71 static GrowableArray<CommandLineFlagConstraint*>* _constraints; 72 public: 73 static void init(); 74 static int length() { return (_constraints != NULL) ? _constraints->length() : 0; } 75 static CommandLineFlagConstraint* at(int i) { return (_constraints != NULL) ? _constraints->at(i) : NULL; } 76 static CommandLineFlagConstraint* find(const char* name); 77 static void add(CommandLineFlagConstraint* constraint) { _constraints->append(constraint); } 78 }; 79 80 #endif /* SHARE_VM_RUNTIME_COMMANDLINEFLAGCONSTRAINTLIST_HPP */