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      1 /*
      2  * Copyright (C) 2017 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_DEX2OAT_DEX2OAT_OPTIONS_H_
     18 #define ART_DEX2OAT_DEX2OAT_OPTIONS_H_
     19 
     20 #include <cstdio>
     21 #include <string>
     22 #include <vector>
     23 
     24 #include "arch/instruction_set.h"
     25 #include "base/variant_map.h"
     26 #include "cmdline_types.h"  // TODO: don't need to include this file here
     27 #include "compiler.h"
     28 #include "dex/compact_dex_level.h"
     29 #include "driver/compiler_options_map.h"
     30 #include "image.h"
     31 
     32 namespace art {
     33 
     34 template <typename TVariantMap,
     35           template <typename TKeyValue> class TVariantMapKey>
     36 struct CmdlineParser;
     37 
     38 // Define a key that is usable with a Dex2oatArgumentMap.
     39 // This key will *not* work with other subtypes of VariantMap.
     40 template <typename TValue>
     41 struct Dex2oatArgumentMapKey : VariantMapKey<TValue> {
     42   Dex2oatArgumentMapKey() {}
     43   explicit Dex2oatArgumentMapKey(TValue default_value)
     44       : VariantMapKey<TValue>(std::move(default_value)) {}
     45   // Don't ODR-use constexpr default values, which means that Struct::Fields
     46   // that are declared 'static constexpr T Name = Value' don't need to have a matching definition.
     47 };
     48 
     49 // Defines a type-safe heterogeneous key->value map.
     50 // Use the VariantMap interface to look up or to store a Dex2oatArgumentMapKey,Value pair.
     51 //
     52 // Example:
     53 //    auto map = Dex2oatArgumentMap();
     54 //    map.Set(Dex2oatArgumentMap::ZipFd, -1);
     55 //    int *target_utilization = map.Get(Dex2oatArgumentMap::ZipFd);
     56 //
     57 struct Dex2oatArgumentMap : CompilerOptionsMap<Dex2oatArgumentMap, Dex2oatArgumentMapKey> {
     58   // This 'using' line is necessary to inherit the variadic constructor.
     59   using CompilerOptionsMap<Dex2oatArgumentMap, Dex2oatArgumentMapKey>::CompilerOptionsMap;
     60 
     61   static std::unique_ptr<Dex2oatArgumentMap> Parse(int argc,
     62                                                    const char** argv,
     63                                                    std::string* error_msg);
     64 
     65   // Make the next many usages of Key slightly shorter to type.
     66   template <typename TValue>
     67   using Key = Dex2oatArgumentMapKey<TValue>;
     68 
     69   // List of key declarations, shorthand for 'static const Key<T> Name'
     70 #define DEX2OAT_OPTIONS_KEY(Type, Name, ...) static const Key<Type> (Name);
     71 #include "dex2oat_options.def"
     72 };
     73 
     74 extern template struct CompilerOptionsMap<Dex2oatArgumentMap, Dex2oatArgumentMapKey>;
     75 
     76 }  // namespace art
     77 
     78 #endif  // ART_DEX2OAT_DEX2OAT_OPTIONS_H_
     79