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      1 /*
      2  * Copyright (C) 2013 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_COMPILER_CALLBACKS_H_
     18 #define ART_RUNTIME_COMPILER_CALLBACKS_H_
     19 
     20 #include "base/mutex.h"
     21 #include "class_reference.h"
     22 
     23 namespace art {
     24 
     25 namespace verifier {
     26 
     27 class MethodVerifier;
     28 
     29 }  // namespace verifier
     30 
     31 class CompilerCallbacks {
     32  public:
     33   enum class CallbackMode {  // private
     34     kCompileBootImage,
     35     kCompileApp
     36   };
     37 
     38   virtual ~CompilerCallbacks() { }
     39 
     40   virtual void MethodVerified(verifier::MethodVerifier* verifier)
     41       SHARED_REQUIRES(Locks::mutator_lock_) = 0;
     42   virtual void ClassRejected(ClassReference ref) = 0;
     43 
     44   // Return true if we should attempt to relocate to a random base address if we have not already
     45   // done so. Return false if relocating in this way would be problematic.
     46   virtual bool IsRelocationPossible() = 0;
     47 
     48   bool IsBootImage() {
     49     return mode_ == CallbackMode::kCompileBootImage;
     50   }
     51 
     52  protected:
     53   explicit CompilerCallbacks(CallbackMode mode) : mode_(mode) { }
     54 
     55  private:
     56   // Whether the compiler is creating a boot image.
     57   const CallbackMode mode_;
     58 };
     59 
     60 }  // namespace art
     61 
     62 #endif  // ART_RUNTIME_COMPILER_CALLBACKS_H_
     63