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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_RUNTIME_CLASS_LOADER_UTILS_H_
     18 #define ART_RUNTIME_CLASS_LOADER_UTILS_H_
     19 
     20 #include "handle_scope.h"
     21 #include "mirror/class_loader.h"
     22 #include "scoped_thread_state_change-inl.h"
     23 #include "well_known_classes.h"
     24 
     25 namespace art {
     26 
     27 // Returns true if the given class loader is either a PathClassLoader or a DexClassLoader.
     28 // (they both have the same behaviour with respect to class lockup order)
     29 static bool IsPathOrDexClassLoader(ScopedObjectAccessAlreadyRunnable& soa,
     30                                    Handle<mirror::ClassLoader> class_loader)
     31     REQUIRES_SHARED(Locks::mutator_lock_) {
     32   mirror::Class* class_loader_class = class_loader->GetClass();
     33   return
     34       (class_loader_class ==
     35           soa.Decode<mirror::Class>(WellKnownClasses::dalvik_system_PathClassLoader)) ||
     36       (class_loader_class ==
     37           soa.Decode<mirror::Class>(WellKnownClasses::dalvik_system_DexClassLoader));
     38 }
     39 
     40 static bool IsDelegateLastClassLoader(ScopedObjectAccessAlreadyRunnable& soa,
     41                                       Handle<mirror::ClassLoader> class_loader)
     42     REQUIRES_SHARED(Locks::mutator_lock_) {
     43   mirror::Class* class_loader_class = class_loader->GetClass();
     44   return class_loader_class ==
     45       soa.Decode<mirror::Class>(WellKnownClasses::dalvik_system_DelegateLastClassLoader);
     46 }
     47 
     48 }  // namespace art
     49 
     50 #endif  // ART_RUNTIME_CLASS_LOADER_UTILS_H_
     51