6b95a0e999
There are many subclasses of the Memory class and the overwhelming majority of them don't need to be exposed externally. We move all of them to internal headers except MemoryOfflineBuffer, which moves to a separate header. This dramatically reduces the exposed API surface and makes the code more modular. Also, remove the Offline code from libbacktrace. It's not used any where. Test: Unit tests pass, clean tree still builds Change-Id: I55dacdf080daba0bfe65c1ad53a4b326bb482e83
66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
/*
|
|
* Copyright (C) 2019 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 _LIBUNWINDSTACK_MEMORY_RANGE_H
|
|
#define _LIBUNWINDSTACK_MEMORY_RANGE_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <map>
|
|
#include <memory>
|
|
#include <string>
|
|
|
|
#include <unwindstack/Memory.h>
|
|
|
|
namespace unwindstack {
|
|
|
|
// MemoryRange maps one address range onto another.
|
|
// The range [src_begin, src_begin + length) in the underlying Memory is mapped onto offset,
|
|
// such that range.read(offset) is equivalent to underlying.read(src_begin).
|
|
class MemoryRange : public Memory {
|
|
public:
|
|
MemoryRange(const std::shared_ptr<Memory>& memory, uint64_t begin, uint64_t length,
|
|
uint64_t offset);
|
|
virtual ~MemoryRange() = default;
|
|
|
|
size_t Read(uint64_t addr, void* dst, size_t size) override;
|
|
|
|
uint64_t offset() { return offset_; }
|
|
uint64_t length() { return length_; }
|
|
|
|
private:
|
|
std::shared_ptr<Memory> memory_;
|
|
uint64_t begin_;
|
|
uint64_t length_;
|
|
uint64_t offset_;
|
|
};
|
|
|
|
class MemoryRanges : public Memory {
|
|
public:
|
|
MemoryRanges() = default;
|
|
virtual ~MemoryRanges() = default;
|
|
|
|
void Insert(MemoryRange* memory);
|
|
|
|
size_t Read(uint64_t addr, void* dst, size_t size) override;
|
|
|
|
private:
|
|
std::map<uint64_t, std::unique_ptr<MemoryRange>> maps_;
|
|
};
|
|
|
|
} // namespace unwindstack
|
|
|
|
#endif // _LIBUNWINDSTACK_MEMORY_RANGE_H
|