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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_RUNTIME_GC_VERIFICATION_H_
#define ART_RUNTIME_GC_VERIFICATION_H_
#include "obj_ptr.h"
#include "offsets.h"
namespace art {
namespace mirror {
class Class;
class Object;
} // namespace mirror
namespace gc {
namespace space {
class Space;
} // namespace space
class Heap;
class Verification {
public:
explicit Verification(gc::Heap* heap) : heap_(heap) {}
// Dump some reveant to debugging info about an object.
std::string DumpObjectInfo(const void* obj, const char* tag) const
REQUIRES_SHARED(Locks::mutator_lock_);
// Don't use ObjPtr for things that might not be aligned like the invalid reference.
void LogHeapCorruption(ObjPtr<mirror::Object> holder,
MemberOffset offset,
mirror::Object* ref,
bool fatal) const REQUIRES_SHARED(Locks::mutator_lock_);
// Return true if the klass is likely to be a valid mirror::Class.
bool IsValidClass(const void* klass) const REQUIRES_SHARED(Locks::mutator_lock_);
// Does not allow null, checks alignment.
bool IsValidHeapObjectAddress(const void* addr, space::Space** out_space = nullptr) const
REQUIRES_SHARED(Locks::mutator_lock_);
// Find the first path to the target from the root set. Should be called while paused since
// visiting roots is not safe otherwise.
std::string FirstPathFromRootSet(ObjPtr<mirror::Object> target) const
REQUIRES_SHARED(Locks::mutator_lock_);
// Does not check alignment, used by DumpRAMAroundAddress.
bool IsAddressInHeapSpace(const void* addr, space::Space** out_space = nullptr) const
REQUIRES_SHARED(Locks::mutator_lock_);
// Dump bytes of RAM before and after an address.
std::string DumpRAMAroundAddress(uintptr_t addr, uintptr_t bytes) const
REQUIRES_SHARED(Locks::mutator_lock_);
private:
gc::Heap* const heap_;
class BFSFindReachable;
class CollectRootVisitor;
};
} // namespace gc
} // namespace art
#endif // ART_RUNTIME_GC_VERIFICATION_H_
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