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.

    22  *

    23  */

    24 

    25 #ifndef SHARE_VM_RUNTIME_JVMFLAGRANGELIST_HPP

    26 #define SHARE_VM_RUNTIME_JVMFLAGRANGELIST_HPP

    27 

    28 #include "memory/metaspaceShared.hpp"

    29 #include "runtime/flags/jvmFlag.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 JVMFlagRange : public CHeapObj<mtArguments> {

    48 private:

    49   const char* _name;

    50 public:

    51   // the "name" argument must be a string literal

    52   JVMFlagRange(const char* name) { _name=name; }

    53   ~JVMFlagRange() {}

    54   const char* name() { return _name; }

    55   virtual JVMFlag::Error check(bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; }

    56   virtual JVMFlag::Error check_int(int value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; }

    57   virtual JVMFlag::Error check_intx(intx value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; }

    58   virtual JVMFlag::Error check_uint(uint value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; }

    59   virtual JVMFlag::Error check_uintx(uintx value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; }

    60   virtual JVMFlag::Error check_uint64_t(uint64_t value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; }

    61   virtual JVMFlag::Error check_size_t(size_t value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; }

    62   virtual JVMFlag::Error check_double(double value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; }

    63   virtual void print(outputStream* st) { ; }

    64 };

    65 

    66 class JVMFlagRangeList : public AllStatic {

    67   static GrowableArray<JVMFlagRange*>* _ranges;

    68 public:

    69   static void init();

    70   static int length() { return (_ranges != NULL) ? _ranges->length() : 0; }

    71   static JVMFlagRange* at(int i) { return (_ranges != NULL) ? _ranges->at(i) : NULL; }

    72   static JVMFlagRange* find(const char* name);

    73   static void add(JVMFlagRange* range) { _ranges->append(range); }

    74   static void print(outputStream* st, const char* name, RangeStrFunc default_range_str_func);

    75   // Check the final values of all flags for ranges.

    76   static bool check_ranges();

    77 };

    78 

    79 #endif // SHARE_VM_RUNTIME_JVMFLAGRANGELIST_HPP