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-rw-r--r--compiler/dex/verified_methods_data.h117
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diff --git a/compiler/dex/verified_methods_data.h b/compiler/dex/verified_methods_data.h
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-/*
- * Copyright (C) 2013 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_COMPILER_DEX_VERIFIED_METHODS_DATA_H_
-#define ART_COMPILER_DEX_VERIFIED_METHODS_DATA_H_
-
-#include <stdint.h>
-#include <set>
-#include <vector>
-
-#include "base/macros.h"
-#include "base/mutex.h"
-#include "class_reference.h"
-#include "method_reference.h"
-#include "safe_map.h"
-
-namespace art {
-
-namespace verifier {
-class MethodVerifier;
-} // namespace verifier
-
-class VerifiedMethodsData {
- public:
- VerifiedMethodsData();
- ~VerifiedMethodsData();
-
- bool ProcessVerifiedMethod(verifier::MethodVerifier* method_verifier)
- SHARED_LOCKS_REQUIRED(Locks::mutator_lock_)
- LOCKS_EXCLUDED(dex_gc_maps_lock_, devirt_maps_lock_, safecast_map_lock_);
-
- const std::vector<uint8_t>* GetDexGcMap(MethodReference ref)
- LOCKS_EXCLUDED(dex_gc_maps_lock_);
-
- const MethodReference* GetDevirtMap(const MethodReference& ref, uint32_t dex_pc)
- LOCKS_EXCLUDED(devirt_maps_lock_);
-
- // Returns true if the cast can statically be verified to be redundant
- // by using the check-cast elision peephole optimization in the verifier
- bool IsSafeCast(MethodReference ref, uint32_t pc) LOCKS_EXCLUDED(safecast_map_lock_);
-
- void AddRejectedClass(ClassReference ref) LOCKS_EXCLUDED(rejected_classes_lock_);
- bool IsClassRejected(ClassReference ref) LOCKS_EXCLUDED(rejected_classes_lock_);
-
- static bool IsCandidateForCompilation(MethodReference& method_ref,
- const uint32_t access_flags);
-
- private:
- /*
- * Generate the GC map for a method that has just been verified (i.e. we're doing this as part of
- * verification). For type-precise determination we have all the data we need, so we just need to
- * encode it in some clever fashion.
- * Returns a pointer to a newly-allocated RegisterMap, or NULL on failure.
- */
- const std::vector<uint8_t>* GenerateGcMap(verifier::MethodVerifier* method_verifier);
-
- // Verify that the GC map associated with method_ is well formed
- void VerifyGcMap(verifier::MethodVerifier* method_verifier, const std::vector<uint8_t>& data);
-
- // Compute sizes for GC map data
- void ComputeGcMapSizes(verifier::MethodVerifier* method_verifier,
- size_t* gc_points, size_t* ref_bitmap_bits, size_t* log2_max_gc_pc);
-
- // All the GC maps that the verifier has created
- typedef SafeMap<const MethodReference, const std::vector<uint8_t>*,
- MethodReferenceComparator> DexGcMapTable;
- ReaderWriterMutex dex_gc_maps_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER;
- DexGcMapTable dex_gc_maps_ GUARDED_BY(dex_gc_maps_lock_);
- void SetDexGcMap(MethodReference ref, const std::vector<uint8_t>* dex_gc_map)
- LOCKS_EXCLUDED(dex_gc_maps_lock_);
-
- // Cast elision types.
- // Since we're adding the dex PCs to the set in increasing order, a sorted vector
- // is better for performance (not just memory usage), especially for large sets.
- typedef std::vector<uint32_t> MethodSafeCastSet;
- typedef SafeMap<MethodReference, const MethodSafeCastSet*,
- MethodReferenceComparator> SafeCastMap;
- MethodSafeCastSet* GenerateSafeCastSet(verifier::MethodVerifier* method_verifier)
- SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
- void SetSafeCastMap(MethodReference ref, const MethodSafeCastSet* mscs)
- LOCKS_EXCLUDED(safecast_map_lock_);
- ReaderWriterMutex safecast_map_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER;
- SafeCastMap safecast_map_ GUARDED_BY(safecast_map_lock_);
-
- // Devirtualization map.
- typedef SafeMap<uint32_t, MethodReference> PcToConcreteMethodMap;
- typedef SafeMap<MethodReference, const PcToConcreteMethodMap*,
- MethodReferenceComparator> DevirtualizationMapTable;
- PcToConcreteMethodMap* GenerateDevirtMap(verifier::MethodVerifier* method_verifier)
- SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
- ReaderWriterMutex devirt_maps_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER;
- DevirtualizationMapTable devirt_maps_ GUARDED_BY(devirt_maps_lock_);
- void SetDevirtMap(MethodReference ref, const PcToConcreteMethodMap* pc_method_map)
- LOCKS_EXCLUDED(devirt_maps_lock_);
-
- // Rejected classes
- typedef std::set<ClassReference> RejectedClassesTable;
- ReaderWriterMutex rejected_classes_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER;
- RejectedClassesTable rejected_classes_ GUARDED_BY(rejected_classes_lock_);
-};
-
-} // namespace art
-
-#endif // ART_COMPILER_DEX_VERIFIED_METHODS_DATA_H_