273d3f08aa
If the Dex file we're trying to examine is already within the unwinder's address space, we don't need to load it from disk or copy it across processes. This avoids using up virtual address space to map in dex files, and also should be a bit faster to read since it won't go out to the file. Patch by Chris Sarbora Test: Ran new unit tests. Test: Ran 137-cfi art test. Change-Id: I949457856f051cca11b9020e9da3a41bbf6e5c8e
71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _LIBUNWINDSTACK_DEX_FILE_H
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#define _LIBUNWINDSTACK_DEX_FILE_H
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#include <stdint.h>
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#include <map>
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#include <memory>
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#include <string>
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#include <utility>
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#include <vector>
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#include <art_api/dex_file_support.h>
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namespace unwindstack {
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class DexFile : protected art_api::dex::DexFile {
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public:
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virtual ~DexFile() = default;
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bool GetMethodInformation(uint64_t dex_offset, std::string* method_name, uint64_t* method_offset);
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static std::unique_ptr<DexFile> Create(uint64_t dex_file_offset_in_memory, Memory* memory,
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MapInfo* info);
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protected:
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DexFile(std::unique_ptr<art_api::dex::DexFile>& art_dex_file)
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: art_api::dex::DexFile(art_dex_file) {}
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};
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class DexFileFromFile : public DexFile {
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public:
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static std::unique_ptr<DexFileFromFile> Create(uint64_t dex_file_offset_in_file,
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const std::string& file);
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private:
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DexFileFromFile(std::unique_ptr<art_api::dex::DexFile>& art_dex_file) : DexFile(art_dex_file) {}
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};
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class DexFileFromMemory : public DexFile {
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public:
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static std::unique_ptr<DexFileFromMemory> Create(uint64_t dex_file_offset_in_memory,
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Memory* memory, const std::string& name,
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size_t max_size);
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private:
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DexFileFromMemory(std::unique_ptr<art_api::dex::DexFile>& art_dex_file,
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std::vector<uint8_t>&& memory)
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: DexFile(art_dex_file), memory_(std::move(memory)) {}
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std::vector<uint8_t> memory_;
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};
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} // namespace unwindstack
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#endif // _LIBUNWINDSTACK_DEX_FILE_H
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