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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef ART_RUNTIME_RUNTIME_OPTIONS_H_
     18 #define ART_RUNTIME_RUNTIME_OPTIONS_H_
     19 
     20 #include <cstdarg>
     21 #include <cstdio>
     22 #include <string>
     23 #include <vector>
     24 
     25 #include "arch/instruction_set.h"
     26 #include "base/logging.h"
     27 #include "base/variant_map.h"
     28 #include "cmdline_types.h"  // TODO: don't need to include this file here
     29 #include "gc/collector_type.h"
     30 #include "gc/space/large_object_space.h"
     31 #include "jdwp/jdwp.h"
     32 #include "jit/jit.h"
     33 #include "jit/jit_code_cache.h"
     34 #include "jit/profile_saver_options.h"
     35 #include "verifier/verifier_enums.h"
     36 
     37 namespace art {
     38 
     39 class CompilerCallbacks;
     40 class DexFile;
     41 struct XGcOption;
     42 struct BackgroundGcOption;
     43 
     44 #define DECLARE_KEY(Type, Name) static const Key<Type> Name
     45 
     46 // Define a key that is usable with a RuntimeArgumentMap.
     47 // This key will *not* work with other subtypes of VariantMap.
     48 template <typename TValue>
     49 struct RuntimeArgumentMapKey : VariantMapKey<TValue> {
     50   RuntimeArgumentMapKey() {}
     51   explicit RuntimeArgumentMapKey(TValue default_value)
     52     : VariantMapKey<TValue>(std::move(default_value)) {}
     53   // Don't ODR-use constexpr default values, which means that Struct::Fields
     54   // that are declared 'static constexpr T Name = Value' don't need to have a matching definition.
     55 };
     56 
     57 // Defines a type-safe heterogeneous key->value map.
     58 // Use the VariantMap interface to look up or to store a RuntimeArgumentMapKey,Value pair.
     59 //
     60 // Example:
     61 //    auto map = RuntimeArgumentMap();
     62 //    map.Set(RuntimeArgumentMap::HeapTargetUtilization, 5.0);
     63 //    double *target_utilization = map.Get(RuntimeArgumentMap);
     64 //
     65 struct RuntimeArgumentMap : VariantMap<RuntimeArgumentMap, RuntimeArgumentMapKey> {
     66   // This 'using' line is necessary to inherit the variadic constructor.
     67   using VariantMap<RuntimeArgumentMap, RuntimeArgumentMapKey>::VariantMap;
     68 
     69   // Make the next many usages of Key slightly shorter to type.
     70   template <typename TValue>
     71   using Key = RuntimeArgumentMapKey<TValue>;
     72 
     73   // List of key declarations, shorthand for 'static const Key<T> Name'
     74 #define RUNTIME_OPTIONS_KEY(Type, Name, ...) static const Key<Type> (Name);
     75 #include "runtime_options.def"
     76 };
     77 
     78 #undef DECLARE_KEY
     79 
     80   // using RuntimeOptions = RuntimeArgumentMap;
     81 }  // namespace art
     82 
     83 #endif  // ART_RUNTIME_RUNTIME_OPTIONS_H_
     84