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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 class CompilerDriver;
     26 
     27 namespace verifier {
     28 
     29 class MethodVerifier;
     30 class VerifierDeps;
     31 
     32 }  // namespace verifier
     33 
     34 class CompilerCallbacks {
     35  public:
     36   enum class CallbackMode {  // private
     37     kCompileBootImage,
     38     kCompileApp
     39   };
     40 
     41   virtual ~CompilerCallbacks() { }
     42 
     43   virtual void MethodVerified(verifier::MethodVerifier* verifier)
     44       REQUIRES_SHARED(Locks::mutator_lock_) = 0;
     45   virtual void ClassRejected(ClassReference ref) = 0;
     46 
     47   // Return true if we should attempt to relocate to a random base address if we have not already
     48   // done so. Return false if relocating in this way would be problematic.
     49   virtual bool IsRelocationPossible() = 0;
     50 
     51   virtual verifier::VerifierDeps* GetVerifierDeps() const = 0;
     52   virtual void SetVerifierDeps(verifier::VerifierDeps* deps ATTRIBUTE_UNUSED) {}
     53 
     54   virtual bool CanAssumeVerified(ClassReference ref ATTRIBUTE_UNUSED) {
     55     return false;
     56   }
     57 
     58   virtual void SetDoesClassUnloading(bool does_class_unloading ATTRIBUTE_UNUSED,
     59                                      CompilerDriver* compiler_driver ATTRIBUTE_UNUSED) {}
     60 
     61   bool IsBootImage() {
     62     return mode_ == CallbackMode::kCompileBootImage;
     63   }
     64 
     65  protected:
     66   explicit CompilerCallbacks(CallbackMode mode) : mode_(mode) { }
     67 
     68  private:
     69   // Whether the compiler is creating a boot image.
     70   const CallbackMode mode_;
     71 };
     72 
     73 }  // namespace art
     74 
     75 #endif  // ART_RUNTIME_COMPILER_CALLBACKS_H_
     76