| /* |
| * 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. |
| */ |
| |
| #define LOG_TAG "storaged" |
| |
| #include <stdint.h> |
| #include <time.h> |
| |
| #include <string> |
| #include <unordered_map> |
| |
| #include <android/content/pm/IPackageManagerNative.h> |
| #include <android-base/file.h> |
| #include <android-base/logging.h> |
| #include <android-base/macros.h> |
| #include <android-base/parseint.h> |
| #include <android-base/strings.h> |
| #include <android-base/stringprintf.h> |
| #include <binder/IServiceManager.h> |
| #include <log/log_event_list.h> |
| |
| #include "storaged.h" |
| #include "storaged_uid_monitor.h" |
| |
| using namespace android; |
| using namespace android::base; |
| using namespace android::content::pm; |
| |
| static bool refresh_uid_names; |
| |
| std::unordered_map<uint32_t, struct uid_info> uid_monitor::get_uid_io_stats() |
| { |
| std::unique_ptr<lock_t> lock(new lock_t(&um_lock)); |
| return get_uid_io_stats_locked(); |
| }; |
| |
| static void get_uid_names(const vector<int>& uids, const vector<std::string*>& uid_names) |
| { |
| sp<IServiceManager> sm = defaultServiceManager(); |
| if (sm == NULL) { |
| LOG_TO(SYSTEM, ERROR) << "defaultServiceManager failed"; |
| return; |
| } |
| |
| sp<IBinder> binder = sm->getService(String16("package_native")); |
| if (binder == NULL) { |
| LOG_TO(SYSTEM, ERROR) << "getService package_native failed"; |
| return; |
| } |
| |
| sp<IPackageManagerNative> package_mgr = interface_cast<IPackageManagerNative>(binder); |
| std::vector<std::string> names; |
| binder::Status status = package_mgr->getNamesForUids(uids, &names); |
| if (!status.isOk()) { |
| LOG_TO(SYSTEM, ERROR) << "package_native::getNamesForUids failed: " |
| << status.exceptionMessage(); |
| return; |
| } |
| |
| for (uint32_t i = 0; i < uid_names.size(); i++) { |
| if (!names[i].empty()) { |
| *uid_names[i] = names[i]; |
| } |
| } |
| |
| refresh_uid_names = false; |
| } |
| |
| std::unordered_map<uint32_t, struct uid_info> uid_monitor::get_uid_io_stats_locked() |
| { |
| std::unordered_map<uint32_t, struct uid_info> uid_io_stats; |
| std::string buffer; |
| if (!ReadFileToString(UID_IO_STATS_PATH, &buffer)) { |
| PLOG_TO(SYSTEM, ERROR) << UID_IO_STATS_PATH << ": ReadFileToString failed"; |
| return uid_io_stats; |
| } |
| |
| std::vector<std::string> io_stats = Split(buffer, "\n"); |
| struct uid_info u; |
| vector<int> uids; |
| vector<std::string*> uid_names; |
| |
| for (uint32_t i = 0; i < io_stats.size(); i++) { |
| if (io_stats[i].empty()) { |
| continue; |
| } |
| std::vector<std::string> fields = Split(io_stats[i], " "); |
| if (fields.size() < 11 || |
| !ParseUint(fields[0], &u.uid) || |
| !ParseUint(fields[1], &u.io[FOREGROUND].rchar) || |
| !ParseUint(fields[2], &u.io[FOREGROUND].wchar) || |
| !ParseUint(fields[3], &u.io[FOREGROUND].read_bytes) || |
| !ParseUint(fields[4], &u.io[FOREGROUND].write_bytes) || |
| !ParseUint(fields[5], &u.io[BACKGROUND].rchar) || |
| !ParseUint(fields[6], &u.io[BACKGROUND].wchar) || |
| !ParseUint(fields[7], &u.io[BACKGROUND].read_bytes) || |
| !ParseUint(fields[8], &u.io[BACKGROUND].write_bytes) || |
| !ParseUint(fields[9], &u.io[FOREGROUND].fsync) || |
| !ParseUint(fields[10], &u.io[BACKGROUND].fsync)) { |
| LOG_TO(SYSTEM, WARNING) << "Invalid I/O stats: \"" |
| << io_stats[i] << "\""; |
| continue; |
| } |
| |
| uid_io_stats[u.uid] = u; |
| uid_io_stats[u.uid].name = std::to_string(u.uid); |
| uids.push_back(u.uid); |
| uid_names.push_back(&uid_io_stats[u.uid].name); |
| if (last_uid_io_stats.find(u.uid) == last_uid_io_stats.end()) { |
| refresh_uid_names = true; |
| } else { |
| uid_io_stats[u.uid].name = last_uid_io_stats[u.uid].name; |
| } |
| } |
| |
| if (!uids.empty() && refresh_uid_names) { |
| get_uid_names(uids, uid_names); |
| } |
| |
| return uid_io_stats; |
| } |
| |
| static const int MAX_UID_RECORDS_SIZE = 1000 * 48; // 1000 uids in 48 hours |
| |
| static inline int records_size( |
| const std::map<uint64_t, struct uid_records>& curr_records) |
| { |
| int count = 0; |
| for (auto const& it : curr_records) { |
| count += it.second.entries.size(); |
| } |
| return count; |
| } |
| |
| static struct uid_io_usage zero_io_usage; |
| |
| void uid_monitor::add_records_locked(uint64_t curr_ts) |
| { |
| // remove records more than 5 days old |
| if (curr_ts > 5 * DAY_TO_SEC) { |
| auto it = records.lower_bound(curr_ts - 5 * DAY_TO_SEC); |
| records.erase(records.begin(), it); |
| } |
| |
| struct uid_records new_records; |
| for (const auto& p : curr_io_stats) { |
| struct uid_record record = {}; |
| record.name = p.first; |
| record.ios = p.second; |
| if (memcmp(&record.ios, &zero_io_usage, sizeof(struct uid_io_usage))) { |
| new_records.entries.push_back(record); |
| } |
| } |
| |
| curr_io_stats.clear(); |
| new_records.start_ts = start_ts; |
| start_ts = curr_ts; |
| |
| if (new_records.entries.empty()) |
| return; |
| |
| // make some room for new records |
| int overflow = records_size(records) + |
| new_records.entries.size() - MAX_UID_RECORDS_SIZE; |
| while (overflow > 0 && records.size() > 0) { |
| auto del_it = records.begin(); |
| overflow -= del_it->second.entries.size(); |
| records.erase(records.begin()); |
| } |
| |
| records[curr_ts] = new_records; |
| } |
| |
| std::map<uint64_t, struct uid_records> uid_monitor::dump( |
| double hours, uint64_t threshold, bool force_report) |
| { |
| if (force_report) { |
| report(); |
| } |
| |
| std::unique_ptr<lock_t> lock(new lock_t(&um_lock)); |
| |
| std::map<uint64_t, struct uid_records> dump_records; |
| uint64_t first_ts = 0; |
| |
| if (hours != 0) { |
| first_ts = time(NULL) - hours * HOUR_TO_SEC; |
| } |
| |
| for (auto it = records.lower_bound(first_ts); it != records.end(); ++it) { |
| const std::vector<struct uid_record>& recs = it->second.entries; |
| struct uid_records filtered; |
| |
| for (const auto& rec : recs) { |
| if (rec.ios.bytes[READ][FOREGROUND][CHARGER_ON] + |
| rec.ios.bytes[READ][FOREGROUND][CHARGER_OFF] + |
| rec.ios.bytes[READ][BACKGROUND][CHARGER_ON] + |
| rec.ios.bytes[READ][BACKGROUND][CHARGER_OFF] + |
| rec.ios.bytes[WRITE][FOREGROUND][CHARGER_ON] + |
| rec.ios.bytes[WRITE][FOREGROUND][CHARGER_OFF] + |
| rec.ios.bytes[WRITE][BACKGROUND][CHARGER_ON] + |
| rec.ios.bytes[WRITE][BACKGROUND][CHARGER_OFF] > threshold) { |
| filtered.entries.push_back(rec); |
| } |
| } |
| |
| if (filtered.entries.empty()) |
| continue; |
| |
| filtered.start_ts = it->second.start_ts; |
| dump_records.insert( |
| std::pair<uint64_t, struct uid_records>(it->first, filtered)); |
| } |
| |
| return dump_records; |
| } |
| |
| void uid_monitor::update_curr_io_stats_locked() |
| { |
| std::unordered_map<uint32_t, struct uid_info> uid_io_stats = |
| get_uid_io_stats_locked(); |
| if (uid_io_stats.empty()) { |
| return; |
| } |
| |
| for (const auto& it : uid_io_stats) { |
| const struct uid_info& uid = it.second; |
| |
| if (curr_io_stats.find(uid.name) == curr_io_stats.end()) { |
| curr_io_stats[uid.name] = {}; |
| } |
| |
| struct uid_io_usage& usage = curr_io_stats[uid.name]; |
| int64_t fg_rd_delta = uid.io[FOREGROUND].read_bytes - |
| last_uid_io_stats[uid.uid].io[FOREGROUND].read_bytes; |
| int64_t bg_rd_delta = uid.io[BACKGROUND].read_bytes - |
| last_uid_io_stats[uid.uid].io[BACKGROUND].read_bytes; |
| int64_t fg_wr_delta = uid.io[FOREGROUND].write_bytes - |
| last_uid_io_stats[uid.uid].io[FOREGROUND].write_bytes; |
| int64_t bg_wr_delta = uid.io[BACKGROUND].write_bytes - |
| last_uid_io_stats[uid.uid].io[BACKGROUND].write_bytes; |
| |
| usage.bytes[READ][FOREGROUND][charger_stat] += |
| (fg_rd_delta < 0) ? 0 : fg_rd_delta; |
| usage.bytes[READ][BACKGROUND][charger_stat] += |
| (bg_rd_delta < 0) ? 0 : bg_rd_delta; |
| usage.bytes[WRITE][FOREGROUND][charger_stat] += |
| (fg_wr_delta < 0) ? 0 : fg_wr_delta; |
| usage.bytes[WRITE][BACKGROUND][charger_stat] += |
| (bg_wr_delta < 0) ? 0 : bg_wr_delta; |
| } |
| |
| last_uid_io_stats = uid_io_stats; |
| } |
| |
| void uid_monitor::report() |
| { |
| std::unique_ptr<lock_t> lock(new lock_t(&um_lock)); |
| |
| update_curr_io_stats_locked(); |
| add_records_locked(time(NULL)); |
| } |
| |
| void uid_monitor::set_charger_state(charger_stat_t stat) |
| { |
| std::unique_ptr<lock_t> lock(new lock_t(&um_lock)); |
| |
| if (charger_stat == stat) { |
| return; |
| } |
| |
| update_curr_io_stats_locked(); |
| charger_stat = stat; |
| } |
| |
| void uid_monitor::init(charger_stat_t stat) |
| { |
| charger_stat = stat; |
| start_ts = time(NULL); |
| last_uid_io_stats = get_uid_io_stats(); |
| } |
| |
| uid_monitor::uid_monitor() |
| { |
| sem_init(&um_lock, 0, 1); |
| } |
| |
| uid_monitor::~uid_monitor() |
| { |
| sem_destroy(&um_lock); |
| } |