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/*
* Copyright (C) 2014 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_CATCH_BLOCK_STACK_VISITOR_H_
#define ART_RUNTIME_CATCH_BLOCK_STACK_VISITOR_H_
#include "mirror/throwable.h"
#include "thread.h"
namespace art {
class CatchFinder;
class ThrowLocation;
// Finds catch handler or prepares deoptimization.
class CatchBlockStackVisitor : public StackVisitor {
public:
CatchBlockStackVisitor(Thread* self, Context* context, mirror::Throwable* exception,
bool is_deoptimization, CatchFinder* catch_finder)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_)
: StackVisitor(self, context),
self_(self), is_deoptimization_(is_deoptimization),
to_find_(is_deoptimization ? nullptr : exception->GetClass()),
catch_finder_(catch_finder), native_method_count_(0), prev_shadow_frame_(nullptr) {
}
bool VisitFrame() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
private:
bool HandleTryItems(mirror::ArtMethod* method) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
bool HandleDeoptimization(mirror::ArtMethod* m) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
Thread* const self_;
const bool is_deoptimization_;
// The type of the exception catch block to find.
mirror::Class* const to_find_;
CatchFinder* const catch_finder_;
// Number of native methods passed in crawl (equates to number of SIRTs to pop)
uint32_t native_method_count_;
ShadowFrame* prev_shadow_frame_;
DISALLOW_COPY_AND_ASSIGN(CatchBlockStackVisitor);
};
} // namespace art
#endif // ART_RUNTIME_CATCH_BLOCK_STACK_VISITOR_H_
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