| // Copyright 2017 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef PROCESS_MEMORY_STATS_H_ |
| #define PROCESS_MEMORY_STATS_H_ |
| |
| #include <stdint.h> |
| |
| #include <map> |
| #include <memory> |
| |
| // Reads process memory stats from /proc/pid/{statm,smaps}. |
| class ProcessMemoryStats { |
| public: |
| struct MmapInfo { |
| char mapped_file[128] = {}; |
| char prot_flags[5] = {}; |
| uint64_t start_addr = 0; |
| uint64_t end_addr = 0; |
| uint64_t virt_kb = 0; |
| uint64_t pss_kb = 0; // Proportional Set Size. |
| uint64_t rss_kb = 0; // Resident Set Size. |
| uint64_t private_clean_kb = 0; |
| uint64_t private_dirty_kb = 0; |
| uint64_t shared_clean_kb = 0; |
| uint64_t shared_dirty_kb = 0; |
| uint64_t swapped_kb = 0; |
| }; |
| |
| explicit ProcessMemoryStats(int pid); |
| |
| bool ReadLightStats(); |
| bool ReadFullStats(); |
| |
| // Available after ReadLightStats(). |
| uint64_t virt_kb() const { return virt_kb_; } |
| uint64_t rss_kb() const { return rss_kb_; } |
| |
| // Available after ReadFullStats(). |
| uint64_t private_clean_kb() const { return private_clean_kb_; } |
| uint64_t private_dirty_kb() const { return private_dirty_kb_; } |
| uint64_t shared_clean_kb() const { return shared_clean_kb_; } |
| uint64_t shared_dirty_kb() const { return shared_dirty_kb_; } |
| uint64_t swapped_kb() const { return swapped_kb_; } |
| |
| private: |
| ProcessMemoryStats(const ProcessMemoryStats&) = delete; |
| void operator=(const ProcessMemoryStats&) = delete; |
| |
| const int pid_; |
| |
| // Light stats. |
| uint64_t virt_kb_ = 0; |
| uint64_t rss_kb_ = 0; |
| |
| // Full stats. |
| uint64_t pss_kb_ = 0; |
| uint64_t private_clean_kb_ = 0; |
| uint64_t private_dirty_kb_ = 0; |
| uint64_t shared_clean_kb_ = 0; |
| uint64_t shared_dirty_kb_ = 0; |
| uint64_t swapped_kb_ = 0; |
| |
| std::map<uintptr_t, std::unique_ptr<MmapInfo>> mmaps_; |
| }; |
| |
| #endif // PROCESS_MEMORY_STATS_H_ |