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      1 /*
      2  * Copyright (C) 2011 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_REFLECTION_H_
     18 #define ART_RUNTIME_REFLECTION_H_
     19 
     20 #include "base/mutex.h"
     21 #include "dex/primitive.h"
     22 #include "jni.h"
     23 #include "obj_ptr.h"
     24 
     25 namespace art {
     26 namespace mirror {
     27 class Class;
     28 class Object;
     29 }  // namespace mirror
     30 class ArtField;
     31 class ArtMethod;
     32 union JValue;
     33 class ScopedObjectAccessAlreadyRunnable;
     34 class ShadowFrame;
     35 
     36 ObjPtr<mirror::Object> BoxPrimitive(Primitive::Type src_class, const JValue& value)
     37     REQUIRES_SHARED(Locks::mutator_lock_);
     38 
     39 bool UnboxPrimitiveForField(ObjPtr<mirror::Object> o,
     40                             ObjPtr<mirror::Class> dst_class,
     41                             ArtField* f,
     42                             JValue* unboxed_value)
     43     REQUIRES_SHARED(Locks::mutator_lock_);
     44 
     45 bool UnboxPrimitiveForResult(ObjPtr<mirror::Object> o,
     46                              ObjPtr<mirror::Class> dst_class,
     47                              JValue* unboxed_value)
     48     REQUIRES_SHARED(Locks::mutator_lock_);
     49 
     50 ALWAYS_INLINE bool ConvertPrimitiveValueNoThrow(Primitive::Type src_class,
     51                                                 Primitive::Type dst_class,
     52                                                 const JValue& src,
     53                                                 JValue* dst)
     54     REQUIRES_SHARED(Locks::mutator_lock_);
     55 
     56 ALWAYS_INLINE bool ConvertPrimitiveValue(bool unbox_for_result,
     57                                          Primitive::Type src_class,
     58                                          Primitive::Type dst_class,
     59                                          const JValue& src,
     60                                          JValue* dst)
     61     REQUIRES_SHARED(Locks::mutator_lock_);
     62 
     63 JValue InvokeWithVarArgs(const ScopedObjectAccessAlreadyRunnable& soa,
     64                          jobject obj,
     65                          jmethodID mid,
     66                          va_list args)
     67     REQUIRES_SHARED(Locks::mutator_lock_);
     68 
     69 JValue InvokeWithJValues(const ScopedObjectAccessAlreadyRunnable& soa,
     70                          jobject obj,
     71                          jmethodID mid,
     72                          jvalue* args)
     73     REQUIRES_SHARED(Locks::mutator_lock_);
     74 
     75 JValue InvokeVirtualOrInterfaceWithJValues(const ScopedObjectAccessAlreadyRunnable& soa,
     76                                            jobject obj,
     77                                            jmethodID mid,
     78                                            jvalue* args)
     79     REQUIRES_SHARED(Locks::mutator_lock_);
     80 
     81 JValue InvokeVirtualOrInterfaceWithVarArgs(const ScopedObjectAccessAlreadyRunnable& soa,
     82                                            jobject obj,
     83                                            jmethodID mid,
     84                                            va_list args)
     85     REQUIRES_SHARED(Locks::mutator_lock_);
     86 
     87 // num_frames is number of frames we look up for access check.
     88 jobject InvokeMethod(const ScopedObjectAccessAlreadyRunnable& soa,
     89                      jobject method,
     90                      jobject receiver,
     91                      jobject args,
     92                      size_t num_frames = 1)
     93     REQUIRES_SHARED(Locks::mutator_lock_);
     94 
     95 ALWAYS_INLINE bool VerifyObjectIsClass(ObjPtr<mirror::Object> o, ObjPtr<mirror::Class> c)
     96     REQUIRES_SHARED(Locks::mutator_lock_);
     97 
     98 bool VerifyAccess(Thread* self,
     99                   ObjPtr<mirror::Object> obj,
    100                   ObjPtr<mirror::Class> declaring_class,
    101                   uint32_t access_flags,
    102                   ObjPtr<mirror::Class>* calling_class,
    103                   size_t num_frames)
    104     REQUIRES_SHARED(Locks::mutator_lock_);
    105 
    106 // This version takes a known calling class.
    107 bool VerifyAccess(ObjPtr<mirror::Object> obj,
    108                   ObjPtr<mirror::Class> declaring_class,
    109                   uint32_t access_flags,
    110                   ObjPtr<mirror::Class> calling_class)
    111     REQUIRES_SHARED(Locks::mutator_lock_);
    112 
    113 // Get the calling class by using a stack visitor, may return null for unattached native threads.
    114 ObjPtr<mirror::Class> GetCallingClass(Thread* self, size_t num_frames)
    115     REQUIRES_SHARED(Locks::mutator_lock_);
    116 
    117 void InvalidReceiverError(ObjPtr<mirror::Object> o, ObjPtr<mirror::Class> c)
    118     REQUIRES_SHARED(Locks::mutator_lock_);
    119 
    120 void UpdateReference(Thread* self, jobject obj, ObjPtr<mirror::Object> result)
    121     REQUIRES_SHARED(Locks::mutator_lock_);
    122 
    123 }  // namespace art
    124 
    125 #endif  // ART_RUNTIME_REFLECTION_H_
    126