1 /* 2 * Copyright (C) 2016 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_DEX_CACHE_RESOLVED_CLASSES_H_ 18 #define ART_RUNTIME_DEX_CACHE_RESOLVED_CLASSES_H_ 19 20 #include <string> 21 #include <unordered_set> 22 #include <vector> 23 24 namespace art { 25 26 // Data structure for passing around which classes belonging to a dex cache / dex file are resolved. 27 class DexCacheResolvedClasses { 28 public: 29 DexCacheResolvedClasses(const std::string& dex_location, 30 const std::string& base_location, 31 uint32_t location_checksum) 32 : dex_location_(dex_location), 33 base_location_(base_location), 34 location_checksum_(location_checksum) {} 35 36 // Only compare the key elements, ignore the resolved classes. 37 int Compare(const DexCacheResolvedClasses& other) const { 38 if (location_checksum_ != other.location_checksum_) { 39 return static_cast<int>(location_checksum_ - other.location_checksum_); 40 } 41 // Don't need to compare base_location_ since dex_location_ has more info. 42 return dex_location_.compare(other.dex_location_); 43 } 44 45 template <class InputIt> 46 void AddClasses(InputIt begin, InputIt end) const { 47 classes_.insert(begin, end); 48 } 49 50 const std::string& GetDexLocation() const { 51 return dex_location_; 52 } 53 54 const std::string& GetBaseLocation() const { 55 return base_location_; 56 } 57 58 uint32_t GetLocationChecksum() const { 59 return location_checksum_; 60 } 61 62 const std::unordered_set<uint16_t>& GetClasses() const { 63 return classes_; 64 } 65 66 private: 67 const std::string dex_location_; 68 const std::string base_location_; 69 const uint32_t location_checksum_; 70 // Array of resolved class def indexes. 71 mutable std::unordered_set<uint16_t> classes_; 72 }; 73 74 inline bool operator<(const DexCacheResolvedClasses& a, const DexCacheResolvedClasses& b) { 75 return a.Compare(b) < 0; 76 } 77 78 } // namespace art 79 80 #endif // ART_RUNTIME_DEX_CACHE_RESOLVED_CLASSES_H_ 81
