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/*
* Copyright (C) 2018 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 <sys/types.h>
#include <string>
#include <vector>
#include "meminfo.h"
namespace android {
namespace meminfo {
class ProcMemInfo final {
// Per-process memory accounting
public:
// Reset the working set accounting of the process via /proc/<pid>/clear_refs
static bool ResetWorkingSet(pid_t pid);
ProcMemInfo(pid_t pid, bool get_wss = false, uint64_t pgflags = 0, uint64_t pgflags_mask = 0);
const std::vector<Vma>& Maps();
const MemUsage& Usage();
const MemUsage& Wss();
const std::vector<uint16_t>& SwapOffsets() const;
~ProcMemInfo() = default;
private:
bool ReadMaps(bool get_wss);
bool ReadVmaStats(int pagemap_fd, Vma& vma, bool get_wss);
pid_t pid_;
bool get_wss_;
uint64_t pgflags_;
uint64_t pgflags_mask_;
std::vector<Vma> maps_;
MemUsage usage_;
MemUsage wss_;
std::vector<uint16_t> swap_offsets_;
};
} // namespace meminfo
} // namespace android
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