Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #define LOG_TAG "storaged" |
| 18 | |
| 19 | #include <stdint.h> |
| 20 | #include <time.h> |
| 21 | |
| 22 | #include <string> |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 23 | #include <unordered_map> |
| 24 | |
Jin Qian | 9c54268 | 2017-07-28 18:45:59 -0700 | [diff] [blame] | 25 | #include <android/content/pm/IPackageManagerNative.h> |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 26 | #include <android-base/file.h> |
| 27 | #include <android-base/logging.h> |
| 28 | #include <android-base/macros.h> |
Jin Qian | 9b1aeae | 2017-03-14 11:20:02 -0700 | [diff] [blame] | 29 | #include <android-base/parseint.h> |
Jin Qian | e83a610 | 2017-03-02 16:16:54 -0800 | [diff] [blame] | 30 | #include <android-base/strings.h> |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 31 | #include <android-base/stringprintf.h> |
Jin Qian | 9c54268 | 2017-07-28 18:45:59 -0700 | [diff] [blame] | 32 | #include <binder/IServiceManager.h> |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 33 | #include <log/log_event_list.h> |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 34 | |
| 35 | #include "storaged.h" |
| 36 | #include "storaged_uid_monitor.h" |
| 37 | |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 38 | using namespace android; |
| 39 | using namespace android::base; |
Jin Qian | 9c54268 | 2017-07-28 18:45:59 -0700 | [diff] [blame] | 40 | using namespace android::content::pm; |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 41 | |
Jin Qian | 9c54268 | 2017-07-28 18:45:59 -0700 | [diff] [blame] | 42 | static bool refresh_uid_names; |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 43 | |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 44 | std::unordered_map<uint32_t, struct uid_info> uid_monitor::get_uid_io_stats() |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 45 | { |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 46 | std::unique_ptr<lock_t> lock(new lock_t(&um_lock)); |
| 47 | return get_uid_io_stats_locked(); |
| 48 | }; |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 49 | |
Jin Qian | 9c54268 | 2017-07-28 18:45:59 -0700 | [diff] [blame] | 50 | static void get_uid_names(const vector<int>& uids, const vector<std::string*>& uid_names) |
| 51 | { |
| 52 | sp<IServiceManager> sm = defaultServiceManager(); |
| 53 | if (sm == NULL) { |
| 54 | LOG_TO(SYSTEM, ERROR) << "defaultServiceManager failed"; |
| 55 | return; |
| 56 | } |
| 57 | |
| 58 | sp<IBinder> binder = sm->getService(String16("package_native")); |
| 59 | if (binder == NULL) { |
| 60 | LOG_TO(SYSTEM, ERROR) << "getService package_native failed"; |
| 61 | return; |
| 62 | } |
| 63 | |
| 64 | sp<IPackageManagerNative> package_mgr = interface_cast<IPackageManagerNative>(binder); |
| 65 | std::vector<std::string> names; |
| 66 | binder::Status status = package_mgr->getNamesForUids(uids, &names); |
| 67 | if (!status.isOk()) { |
| 68 | LOG_TO(SYSTEM, ERROR) << "package_native::getNamesForUids failed: " |
| 69 | << status.exceptionMessage(); |
| 70 | return; |
| 71 | } |
| 72 | |
| 73 | for (uint32_t i = 0; i < uid_names.size(); i++) { |
| 74 | if (!names[i].empty()) { |
| 75 | *uid_names[i] = names[i]; |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | refresh_uid_names = false; |
| 80 | } |
| 81 | |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 82 | std::unordered_map<uint32_t, struct uid_info> uid_monitor::get_uid_io_stats_locked() |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 83 | { |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 84 | std::unordered_map<uint32_t, struct uid_info> uid_io_stats; |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 85 | std::string buffer; |
Jin Qian | 9b1aeae | 2017-03-14 11:20:02 -0700 | [diff] [blame] | 86 | if (!ReadFileToString(UID_IO_STATS_PATH, &buffer)) { |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 87 | PLOG_TO(SYSTEM, ERROR) << UID_IO_STATS_PATH << ": ReadFileToString failed"; |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 88 | return uid_io_stats; |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 89 | } |
| 90 | |
Jin Qian | 9b1aeae | 2017-03-14 11:20:02 -0700 | [diff] [blame] | 91 | std::vector<std::string> io_stats = Split(buffer, "\n"); |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 92 | struct uid_info u; |
Jin Qian | 9c54268 | 2017-07-28 18:45:59 -0700 | [diff] [blame] | 93 | vector<int> uids; |
| 94 | vector<std::string*> uid_names; |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 95 | |
Jin Qian | e83a610 | 2017-03-02 16:16:54 -0800 | [diff] [blame] | 96 | for (uint32_t i = 0; i < io_stats.size(); i++) { |
| 97 | if (io_stats[i].empty()) { |
| 98 | continue; |
| 99 | } |
Jin Qian | 9b1aeae | 2017-03-14 11:20:02 -0700 | [diff] [blame] | 100 | std::vector<std::string> fields = Split(io_stats[i], " "); |
| 101 | if (fields.size() < 11 || |
| 102 | !ParseUint(fields[0], &u.uid) || |
| 103 | !ParseUint(fields[1], &u.io[FOREGROUND].rchar) || |
| 104 | !ParseUint(fields[2], &u.io[FOREGROUND].wchar) || |
| 105 | !ParseUint(fields[3], &u.io[FOREGROUND].read_bytes) || |
| 106 | !ParseUint(fields[4], &u.io[FOREGROUND].write_bytes) || |
| 107 | !ParseUint(fields[5], &u.io[BACKGROUND].rchar) || |
| 108 | !ParseUint(fields[6], &u.io[BACKGROUND].wchar) || |
| 109 | !ParseUint(fields[7], &u.io[BACKGROUND].read_bytes) || |
| 110 | !ParseUint(fields[8], &u.io[BACKGROUND].write_bytes) || |
| 111 | !ParseUint(fields[9], &u.io[FOREGROUND].fsync) || |
| 112 | !ParseUint(fields[10], &u.io[BACKGROUND].fsync)) { |
| 113 | LOG_TO(SYSTEM, WARNING) << "Invalid I/O stats: \"" |
Jin Qian | e83a610 | 2017-03-02 16:16:54 -0800 | [diff] [blame] | 114 | << io_stats[i] << "\""; |
| 115 | continue; |
| 116 | } |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 117 | |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 118 | uid_io_stats[u.uid] = u; |
Jin Qian | 9c54268 | 2017-07-28 18:45:59 -0700 | [diff] [blame] | 119 | uid_io_stats[u.uid].name = std::to_string(u.uid); |
| 120 | uids.push_back(u.uid); |
| 121 | uid_names.push_back(&uid_io_stats[u.uid].name); |
| 122 | if (last_uid_io_stats.find(u.uid) == last_uid_io_stats.end()) { |
| 123 | refresh_uid_names = true; |
| 124 | } else { |
| 125 | uid_io_stats[u.uid].name = last_uid_io_stats[u.uid].name; |
| 126 | } |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 127 | } |
| 128 | |
Jin Qian | 9c54268 | 2017-07-28 18:45:59 -0700 | [diff] [blame] | 129 | if (!uids.empty() && refresh_uid_names) { |
| 130 | get_uid_names(uids, uid_names); |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 131 | } |
| 132 | |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 133 | return uid_io_stats; |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 134 | } |
| 135 | |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 136 | static const int MAX_UID_RECORDS_SIZE = 1000 * 48; // 1000 uids in 48 hours |
Jin Qian | a2e5bd1 | 2017-01-24 16:23:13 -0800 | [diff] [blame] | 137 | |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 138 | static inline int records_size( |
Jin Qian | 8157775 | 2017-02-21 12:09:39 -0800 | [diff] [blame] | 139 | const std::map<uint64_t, struct uid_records>& curr_records) |
Jin Qian | a2e5bd1 | 2017-01-24 16:23:13 -0800 | [diff] [blame] | 140 | { |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 141 | int count = 0; |
Jin Qian | 8157775 | 2017-02-21 12:09:39 -0800 | [diff] [blame] | 142 | for (auto const& it : curr_records) { |
| 143 | count += it.second.entries.size(); |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 144 | } |
| 145 | return count; |
Jin Qian | a2e5bd1 | 2017-01-24 16:23:13 -0800 | [diff] [blame] | 146 | } |
| 147 | |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 148 | static struct uid_io_usage zero_io_usage; |
| 149 | |
| 150 | void uid_monitor::add_records_locked(uint64_t curr_ts) |
Jin Qian | a2e5bd1 | 2017-01-24 16:23:13 -0800 | [diff] [blame] | 151 | { |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 152 | // remove records more than 5 days old |
| 153 | if (curr_ts > 5 * DAY_TO_SEC) { |
| 154 | auto it = records.lower_bound(curr_ts - 5 * DAY_TO_SEC); |
| 155 | records.erase(records.begin(), it); |
Jin Qian | 9cdfdd3 | 2017-01-31 17:33:20 -0800 | [diff] [blame] | 156 | } |
| 157 | |
Jin Qian | 8157775 | 2017-02-21 12:09:39 -0800 | [diff] [blame] | 158 | struct uid_records new_records; |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 159 | for (const auto& p : curr_io_stats) { |
| 160 | struct uid_record record = {}; |
| 161 | record.name = p.first; |
| 162 | record.ios = p.second; |
| 163 | if (memcmp(&record.ios, &zero_io_usage, sizeof(struct uid_io_usage))) { |
Jin Qian | 8157775 | 2017-02-21 12:09:39 -0800 | [diff] [blame] | 164 | new_records.entries.push_back(record); |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 165 | } |
Jin Qian | 9cdfdd3 | 2017-01-31 17:33:20 -0800 | [diff] [blame] | 166 | } |
Jin Qian | 9cdfdd3 | 2017-01-31 17:33:20 -0800 | [diff] [blame] | 167 | |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 168 | curr_io_stats.clear(); |
Jin Qian | 8157775 | 2017-02-21 12:09:39 -0800 | [diff] [blame] | 169 | new_records.start_ts = start_ts; |
| 170 | start_ts = curr_ts; |
Jin Qian | 9cdfdd3 | 2017-01-31 17:33:20 -0800 | [diff] [blame] | 171 | |
Jin Qian | 8157775 | 2017-02-21 12:09:39 -0800 | [diff] [blame] | 172 | if (new_records.entries.empty()) |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 173 | return; |
| 174 | |
| 175 | // make some room for new records |
| 176 | int overflow = records_size(records) + |
Jin Qian | 8157775 | 2017-02-21 12:09:39 -0800 | [diff] [blame] | 177 | new_records.entries.size() - MAX_UID_RECORDS_SIZE; |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 178 | while (overflow > 0 && records.size() > 0) { |
Jin Qian | 8157775 | 2017-02-21 12:09:39 -0800 | [diff] [blame] | 179 | auto del_it = records.begin(); |
| 180 | overflow -= del_it->second.entries.size(); |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 181 | records.erase(records.begin()); |
| 182 | } |
| 183 | |
Jin Qian | 8157775 | 2017-02-21 12:09:39 -0800 | [diff] [blame] | 184 | records[curr_ts] = new_records; |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 185 | } |
| 186 | |
Jin Qian | 8157775 | 2017-02-21 12:09:39 -0800 | [diff] [blame] | 187 | std::map<uint64_t, struct uid_records> uid_monitor::dump( |
Jin Qian | dd41d6b | 2017-02-10 17:23:16 -0800 | [diff] [blame] | 188 | double hours, uint64_t threshold, bool force_report) |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 189 | { |
Jin Qian | 1275b1b | 2017-02-06 14:02:50 -0800 | [diff] [blame] | 190 | if (force_report) { |
| 191 | report(); |
| 192 | } |
| 193 | |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 194 | std::unique_ptr<lock_t> lock(new lock_t(&um_lock)); |
| 195 | |
Jin Qian | 8157775 | 2017-02-21 12:09:39 -0800 | [diff] [blame] | 196 | std::map<uint64_t, struct uid_records> dump_records; |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 197 | uint64_t first_ts = 0; |
| 198 | |
| 199 | if (hours != 0) { |
Jin Qian | dd41d6b | 2017-02-10 17:23:16 -0800 | [diff] [blame] | 200 | first_ts = time(NULL) - hours * HOUR_TO_SEC; |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 201 | } |
| 202 | |
Jin Qian | e5ea17c | 2017-02-10 10:50:03 -0800 | [diff] [blame] | 203 | for (auto it = records.lower_bound(first_ts); it != records.end(); ++it) { |
Jin Qian | 8157775 | 2017-02-21 12:09:39 -0800 | [diff] [blame] | 204 | const std::vector<struct uid_record>& recs = it->second.entries; |
| 205 | struct uid_records filtered; |
Jin Qian | e5ea17c | 2017-02-10 10:50:03 -0800 | [diff] [blame] | 206 | |
| 207 | for (const auto& rec : recs) { |
| 208 | if (rec.ios.bytes[READ][FOREGROUND][CHARGER_ON] + |
| 209 | rec.ios.bytes[READ][FOREGROUND][CHARGER_OFF] + |
| 210 | rec.ios.bytes[READ][BACKGROUND][CHARGER_ON] + |
| 211 | rec.ios.bytes[READ][BACKGROUND][CHARGER_OFF] + |
| 212 | rec.ios.bytes[WRITE][FOREGROUND][CHARGER_ON] + |
| 213 | rec.ios.bytes[WRITE][FOREGROUND][CHARGER_OFF] + |
| 214 | rec.ios.bytes[WRITE][BACKGROUND][CHARGER_ON] + |
| 215 | rec.ios.bytes[WRITE][BACKGROUND][CHARGER_OFF] > threshold) { |
Jin Qian | 8157775 | 2017-02-21 12:09:39 -0800 | [diff] [blame] | 216 | filtered.entries.push_back(rec); |
Jin Qian | e5ea17c | 2017-02-10 10:50:03 -0800 | [diff] [blame] | 217 | } |
| 218 | } |
Jin Qian | 8157775 | 2017-02-21 12:09:39 -0800 | [diff] [blame] | 219 | |
| 220 | if (filtered.entries.empty()) |
| 221 | continue; |
| 222 | |
| 223 | filtered.start_ts = it->second.start_ts; |
Jin Qian | e5ea17c | 2017-02-10 10:50:03 -0800 | [diff] [blame] | 224 | dump_records.insert( |
Jin Qian | 8157775 | 2017-02-21 12:09:39 -0800 | [diff] [blame] | 225 | std::pair<uint64_t, struct uid_records>(it->first, filtered)); |
Jin Qian | e5ea17c | 2017-02-10 10:50:03 -0800 | [diff] [blame] | 226 | } |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 227 | |
| 228 | return dump_records; |
| 229 | } |
| 230 | |
| 231 | void uid_monitor::update_curr_io_stats_locked() |
| 232 | { |
| 233 | std::unordered_map<uint32_t, struct uid_info> uid_io_stats = |
| 234 | get_uid_io_stats_locked(); |
| 235 | if (uid_io_stats.empty()) { |
| 236 | return; |
| 237 | } |
| 238 | |
| 239 | for (const auto& it : uid_io_stats) { |
| 240 | const struct uid_info& uid = it.second; |
| 241 | |
| 242 | if (curr_io_stats.find(uid.name) == curr_io_stats.end()) { |
| 243 | curr_io_stats[uid.name] = {}; |
| 244 | } |
| 245 | |
| 246 | struct uid_io_usage& usage = curr_io_stats[uid.name]; |
Jin Qian | baff640 | 2017-02-16 18:34:31 -0800 | [diff] [blame] | 247 | int64_t fg_rd_delta = uid.io[FOREGROUND].read_bytes - |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 248 | last_uid_io_stats[uid.uid].io[FOREGROUND].read_bytes; |
Jin Qian | baff640 | 2017-02-16 18:34:31 -0800 | [diff] [blame] | 249 | int64_t bg_rd_delta = uid.io[BACKGROUND].read_bytes - |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 250 | last_uid_io_stats[uid.uid].io[BACKGROUND].read_bytes; |
Jin Qian | baff640 | 2017-02-16 18:34:31 -0800 | [diff] [blame] | 251 | int64_t fg_wr_delta = uid.io[FOREGROUND].write_bytes - |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 252 | last_uid_io_stats[uid.uid].io[FOREGROUND].write_bytes; |
Jin Qian | baff640 | 2017-02-16 18:34:31 -0800 | [diff] [blame] | 253 | int64_t bg_wr_delta = uid.io[BACKGROUND].write_bytes - |
| 254 | last_uid_io_stats[uid.uid].io[BACKGROUND].write_bytes; |
| 255 | |
| 256 | usage.bytes[READ][FOREGROUND][charger_stat] += |
Jin Qian | ccae2b5 | 2017-08-02 17:37:40 -0700 | [diff] [blame] | 257 | (fg_rd_delta < 0) ? 0 : fg_rd_delta; |
Jin Qian | baff640 | 2017-02-16 18:34:31 -0800 | [diff] [blame] | 258 | usage.bytes[READ][BACKGROUND][charger_stat] += |
Jin Qian | ccae2b5 | 2017-08-02 17:37:40 -0700 | [diff] [blame] | 259 | (bg_rd_delta < 0) ? 0 : bg_rd_delta; |
Jin Qian | baff640 | 2017-02-16 18:34:31 -0800 | [diff] [blame] | 260 | usage.bytes[WRITE][FOREGROUND][charger_stat] += |
Jin Qian | ccae2b5 | 2017-08-02 17:37:40 -0700 | [diff] [blame] | 261 | (fg_wr_delta < 0) ? 0 : fg_wr_delta; |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 262 | usage.bytes[WRITE][BACKGROUND][charger_stat] += |
Jin Qian | ccae2b5 | 2017-08-02 17:37:40 -0700 | [diff] [blame] | 263 | (bg_wr_delta < 0) ? 0 : bg_wr_delta; |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 264 | } |
| 265 | |
| 266 | last_uid_io_stats = uid_io_stats; |
Jin Qian | a2e5bd1 | 2017-01-24 16:23:13 -0800 | [diff] [blame] | 267 | } |
| 268 | |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 269 | void uid_monitor::report() |
| 270 | { |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 271 | std::unique_ptr<lock_t> lock(new lock_t(&um_lock)); |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 272 | |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 273 | update_curr_io_stats_locked(); |
| 274 | add_records_locked(time(NULL)); |
| 275 | } |
| 276 | |
| 277 | void uid_monitor::set_charger_state(charger_stat_t stat) |
| 278 | { |
| 279 | std::unique_ptr<lock_t> lock(new lock_t(&um_lock)); |
| 280 | |
| 281 | if (charger_stat == stat) { |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 282 | return; |
| 283 | } |
| 284 | |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 285 | update_curr_io_stats_locked(); |
| 286 | charger_stat = stat; |
| 287 | } |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 288 | |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 289 | void uid_monitor::init(charger_stat_t stat) |
| 290 | { |
| 291 | charger_stat = stat; |
Jin Qian | 8157775 | 2017-02-21 12:09:39 -0800 | [diff] [blame] | 292 | start_ts = time(NULL); |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 293 | last_uid_io_stats = get_uid_io_stats(); |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 294 | } |
| 295 | |
| 296 | uid_monitor::uid_monitor() |
| 297 | { |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 298 | sem_init(&um_lock, 0, 1); |
Jin Qian | a2e5bd1 | 2017-01-24 16:23:13 -0800 | [diff] [blame] | 299 | } |
| 300 | |
| 301 | uid_monitor::~uid_monitor() |
| 302 | { |
Jin Qian | 5b962c6 | 2017-01-30 14:48:38 -0800 | [diff] [blame] | 303 | sem_destroy(&um_lock); |
Jin Qian | bcd6e3b | 2016-12-28 15:43:51 -0800 | [diff] [blame] | 304 | } |