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      1 /*
      2  * Copyright (C) 2014 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_VERIFY_OBJECT_H_
     18 #define ART_RUNTIME_VERIFY_OBJECT_H_
     19 
     20 #include <stdint.h>
     21 
     22 #include "base/macros.h"
     23 
     24 namespace art {
     25 
     26 namespace mirror {
     27   class Class;
     28   class Object;
     29 }  // namespace mirror
     30 
     31 // How we want to sanity check the heap's correctness.
     32 enum VerifyObjectMode {
     33   kVerifyObjectModeDisabled,  // Heap verification is disabled.
     34   kVerifyObjectModeFast,  // Sanity heap accesses quickly by using VerifyClassClass.
     35   kVerifyObjectModeAll  // Sanity heap accesses thoroughly.
     36 };
     37 
     38 enum VerifyObjectFlags {
     39   kVerifyNone = 0x0,
     40   // Verify self when we are doing an operation.
     41   kVerifyThis = 0x1,
     42   // Verify reads from objects.
     43   kVerifyReads = 0x2,
     44   // Verify writes to objects.
     45   kVerifyWrites = 0x4,
     46   // Verify all things.
     47   kVerifyAll = kVerifyThis | kVerifyReads | kVerifyWrites,
     48 };
     49 
     50 static constexpr bool kVerifyStack = kIsDebugBuild;
     51 static constexpr VerifyObjectFlags kDefaultVerifyFlags = kVerifyNone;
     52 static constexpr VerifyObjectMode kVerifyObjectSupport =
     53     kDefaultVerifyFlags != 0 ? kVerifyObjectModeFast : kVerifyObjectModeDisabled;
     54 
     55 ALWAYS_INLINE void VerifyObject(mirror::Object* obj) NO_THREAD_SAFETY_ANALYSIS;
     56 
     57 // Check that c.getClass() == c.getClass().getClass().
     58 ALWAYS_INLINE bool VerifyClassClass(mirror::Class* c) NO_THREAD_SAFETY_ANALYSIS;
     59 
     60 }  // namespace art
     61 
     62 #endif  // ART_RUNTIME_VERIFY_OBJECT_H_
     63