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/*
* Copyright (C) 2016 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.
*/
#pragma once
#include <stdint.h>
#include <sys/types.h>
#include <unistd.h>
#include <memory>
#include <string>
namespace unwindstack {
class MemoryCacheBase;
class Memory {
public:
Memory() = default;
virtual ~Memory() = default;
static std::shared_ptr<Memory> CreateProcessMemory(pid_t pid);
static std::shared_ptr<Memory> CreateProcessMemoryCached(pid_t pid);
static std::shared_ptr<Memory> CreateProcessMemoryThreadCached(pid_t pid);
static std::shared_ptr<Memory> CreateOfflineMemory(const uint8_t* data, uint64_t start,
uint64_t end);
static std::unique_ptr<Memory> CreateFileMemory(const std::string& path, uint64_t offset,
uint64_t size = UINT64_MAX);
virtual MemoryCacheBase* AsMemoryCacheBase() { return nullptr; }
virtual bool ReadString(uint64_t addr, std::string* dst, size_t max_read);
virtual void Clear() {}
// Get pointer to directly access the data for buffers that support it.
virtual uint8_t* GetPtr(size_t /*addr*/ = 0) { return nullptr; }
virtual size_t Read(uint64_t addr, void* dst, size_t size) = 0;
virtual long ReadTag(uint64_t) { return -1; }
bool ReadFully(uint64_t addr, void* dst, size_t size);
inline bool Read32(uint64_t addr, uint32_t* dst) {
return ReadFully(addr, dst, sizeof(uint32_t));
}
inline bool Read64(uint64_t addr, uint64_t* dst) {
return ReadFully(addr, dst, sizeof(uint64_t));
}
};
} // namespace unwindstack
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