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| 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "base/process/process_metrics.h" | |
| 6 | |
| 7 #include <dirent.h> | |
| 8 #include <fcntl.h> | |
| 9 #include <sys/stat.h> | |
| 10 #include <sys/time.h> | |
| 11 #include <sys/types.h> | |
| 12 #include <unistd.h> | |
| 13 | |
| 14 #include "base/files/file_util.h" | |
| 15 #include "base/logging.h" | |
| 16 #include "base/process/internal_linux.h" | |
| 17 #include "base/strings/string_number_conversions.h" | |
| 18 #include "base/strings/string_split.h" | |
| 19 #include "base/strings/string_tokenizer.h" | |
| 20 #include "base/strings/string_util.h" | |
| 21 #include "base/sys_info.h" | |
| 22 #include "base/threading/thread_restrictions.h" | |
| 23 | |
| 24 namespace base { | |
| 25 | |
| 26 namespace { | |
| 27 | |
| 28 void TrimKeyValuePairs(StringPairs* pairs) { | |
| 29 DCHECK(pairs); | |
| 30 StringPairs& p_ref = *pairs; | |
| 31 for (size_t i = 0; i < p_ref.size(); ++i) { | |
| 32 TrimWhitespaceASCII(p_ref[i].first, TRIM_ALL, &p_ref[i].first); | |
| 33 TrimWhitespaceASCII(p_ref[i].second, TRIM_ALL, &p_ref[i].second); | |
| 34 } | |
| 35 } | |
| 36 | |
| 37 #if defined(OS_CHROMEOS) | |
| 38 // Read a file with a single number string and return the number as a uint64. | |
| 39 static uint64 ReadFileToUint64(const FilePath file) { | |
| 40 std::string file_as_string; | |
| 41 if (!ReadFileToString(file, &file_as_string)) | |
| 42 return 0; | |
| 43 TrimWhitespaceASCII(file_as_string, TRIM_ALL, &file_as_string); | |
| 44 uint64 file_as_uint64 = 0; | |
| 45 if (!StringToUint64(file_as_string, &file_as_uint64)) | |
| 46 return 0; | |
| 47 return file_as_uint64; | |
| 48 } | |
| 49 #endif | |
| 50 | |
| 51 // Read /proc/<pid>/status and return the value for |field|, or 0 on failure. | |
| 52 // Only works for fields in the form of "Field: value kB". | |
| 53 size_t ReadProcStatusAndGetFieldAsSizeT(pid_t pid, const std::string& field) { | |
| 54 std::string status; | |
| 55 { | |
| 56 // Synchronously reading files in /proc does not hit the disk. | |
| 57 ThreadRestrictions::ScopedAllowIO allow_io; | |
| 58 FilePath stat_file = internal::GetProcPidDir(pid).Append("status"); | |
| 59 if (!ReadFileToString(stat_file, &status)) | |
| 60 return 0; | |
| 61 } | |
| 62 | |
| 63 StringPairs pairs; | |
| 64 SplitStringIntoKeyValuePairs(status, ':', '\n', &pairs); | |
| 65 TrimKeyValuePairs(&pairs); | |
| 66 for (size_t i = 0; i < pairs.size(); ++i) { | |
| 67 const std::string& key = pairs[i].first; | |
| 68 const std::string& value_str = pairs[i].second; | |
| 69 if (key == field) { | |
| 70 std::vector<std::string> split_value_str; | |
| 71 SplitString(value_str, ' ', &split_value_str); | |
| 72 if (split_value_str.size() != 2 || split_value_str[1] != "kB") { | |
| 73 NOTREACHED(); | |
| 74 return 0; | |
| 75 } | |
| 76 size_t value; | |
| 77 if (!StringToSizeT(split_value_str[0], &value)) { | |
| 78 NOTREACHED(); | |
| 79 return 0; | |
| 80 } | |
| 81 return value; | |
| 82 } | |
| 83 } | |
| 84 NOTREACHED(); | |
| 85 return 0; | |
| 86 } | |
| 87 | |
| 88 #if defined(OS_LINUX) | |
| 89 // Read /proc/<pid>/sched and look for |field|. On succes, return true and | |
| 90 // write the value for |field| into |result|. | |
| 91 // Only works for fields in the form of "field : uint_value" | |
| 92 bool ReadProcSchedAndGetFieldAsUint64(pid_t pid, | |
| 93 const std::string& field, | |
| 94 uint64* result) { | |
| 95 std::string sched_data; | |
| 96 { | |
| 97 // Synchronously reading files in /proc does not hit the disk. | |
| 98 ThreadRestrictions::ScopedAllowIO allow_io; | |
| 99 FilePath sched_file = internal::GetProcPidDir(pid).Append("sched"); | |
| 100 if (!ReadFileToString(sched_file, &sched_data)) | |
| 101 return false; | |
| 102 } | |
| 103 | |
| 104 StringPairs pairs; | |
| 105 SplitStringIntoKeyValuePairs(sched_data, ':', '\n', &pairs); | |
| 106 TrimKeyValuePairs(&pairs); | |
| 107 for (size_t i = 0; i < pairs.size(); ++i) { | |
| 108 const std::string& key = pairs[i].first; | |
| 109 const std::string& value_str = pairs[i].second; | |
| 110 if (key == field) { | |
| 111 uint64 value; | |
| 112 if (!StringToUint64(value_str, &value)) | |
| 113 return false; | |
| 114 *result = value; | |
| 115 return true; | |
| 116 } | |
| 117 } | |
| 118 return false; | |
| 119 } | |
| 120 #endif // defined(OS_LINUX) | |
| 121 | |
| 122 // Get the total CPU of a single process. Return value is number of jiffies | |
| 123 // on success or -1 on error. | |
| 124 int GetProcessCPU(pid_t pid) { | |
| 125 // Use /proc/<pid>/task to find all threads and parse their /stat file. | |
| 126 FilePath task_path = internal::GetProcPidDir(pid).Append("task"); | |
| 127 | |
| 128 DIR* dir = opendir(task_path.value().c_str()); | |
| 129 if (!dir) { | |
| 130 DPLOG(ERROR) << "opendir(" << task_path.value() << ")"; | |
| 131 return -1; | |
| 132 } | |
| 133 | |
| 134 int total_cpu = 0; | |
| 135 while (struct dirent* ent = readdir(dir)) { | |
| 136 pid_t tid = internal::ProcDirSlotToPid(ent->d_name); | |
| 137 if (!tid) | |
| 138 continue; | |
| 139 | |
| 140 // Synchronously reading files in /proc does not hit the disk. | |
| 141 ThreadRestrictions::ScopedAllowIO allow_io; | |
| 142 | |
| 143 std::string stat; | |
| 144 FilePath stat_path = | |
| 145 task_path.Append(ent->d_name).Append(internal::kStatFile); | |
| 146 if (ReadFileToString(stat_path, &stat)) { | |
| 147 int cpu = ParseProcStatCPU(stat); | |
| 148 if (cpu > 0) | |
| 149 total_cpu += cpu; | |
| 150 } | |
| 151 } | |
| 152 closedir(dir); | |
| 153 | |
| 154 return total_cpu; | |
| 155 } | |
| 156 | |
| 157 } // namespace | |
| 158 | |
| 159 // static | |
| 160 ProcessMetrics* ProcessMetrics::CreateProcessMetrics(ProcessHandle process) { | |
| 161 return new ProcessMetrics(process); | |
| 162 } | |
| 163 | |
| 164 // On linux, we return vsize. | |
| 165 size_t ProcessMetrics::GetPagefileUsage() const { | |
| 166 return internal::ReadProcStatsAndGetFieldAsSizeT(process_, | |
| 167 internal::VM_VSIZE); | |
| 168 } | |
| 169 | |
| 170 // On linux, we return the high water mark of vsize. | |
| 171 size_t ProcessMetrics::GetPeakPagefileUsage() const { | |
| 172 return ReadProcStatusAndGetFieldAsSizeT(process_, "VmPeak") * 1024; | |
| 173 } | |
| 174 | |
| 175 // On linux, we return RSS. | |
| 176 size_t ProcessMetrics::GetWorkingSetSize() const { | |
| 177 return internal::ReadProcStatsAndGetFieldAsSizeT(process_, internal::VM_RSS) * | |
| 178 getpagesize(); | |
| 179 } | |
| 180 | |
| 181 // On linux, we return the high water mark of RSS. | |
| 182 size_t ProcessMetrics::GetPeakWorkingSetSize() const { | |
| 183 return ReadProcStatusAndGetFieldAsSizeT(process_, "VmHWM") * 1024; | |
| 184 } | |
| 185 | |
| 186 bool ProcessMetrics::GetMemoryBytes(size_t* private_bytes, | |
| 187 size_t* shared_bytes) { | |
| 188 WorkingSetKBytes ws_usage; | |
| 189 if (!GetWorkingSetKBytes(&ws_usage)) | |
| 190 return false; | |
| 191 | |
| 192 if (private_bytes) | |
| 193 *private_bytes = ws_usage.priv * 1024; | |
| 194 | |
| 195 if (shared_bytes) | |
| 196 *shared_bytes = ws_usage.shared * 1024; | |
| 197 | |
| 198 return true; | |
| 199 } | |
| 200 | |
| 201 bool ProcessMetrics::GetWorkingSetKBytes(WorkingSetKBytes* ws_usage) const { | |
| 202 #if defined(OS_CHROMEOS) | |
| 203 if (GetWorkingSetKBytesTotmaps(ws_usage)) | |
| 204 return true; | |
| 205 #endif | |
| 206 return GetWorkingSetKBytesStatm(ws_usage); | |
| 207 } | |
| 208 | |
| 209 double ProcessMetrics::GetCPUUsage() { | |
| 210 TimeTicks time = TimeTicks::Now(); | |
| 211 | |
| 212 if (last_cpu_ == 0) { | |
| 213 // First call, just set the last values. | |
| 214 last_cpu_time_ = time; | |
| 215 last_cpu_ = GetProcessCPU(process_); | |
| 216 return 0; | |
| 217 } | |
| 218 | |
| 219 int64 time_delta = (time - last_cpu_time_).InMicroseconds(); | |
| 220 DCHECK_NE(time_delta, 0); | |
| 221 if (time_delta == 0) | |
| 222 return 0; | |
| 223 | |
| 224 int cpu = GetProcessCPU(process_); | |
| 225 | |
| 226 // We have the number of jiffies in the time period. Convert to percentage. | |
| 227 // Note this means we will go *over* 100 in the case where multiple threads | |
| 228 // are together adding to more than one CPU's worth. | |
| 229 TimeDelta cpu_time = internal::ClockTicksToTimeDelta(cpu); | |
| 230 TimeDelta last_cpu_time = internal::ClockTicksToTimeDelta(last_cpu_); | |
| 231 double percentage = 100.0 * (cpu_time - last_cpu_time).InSecondsF() / | |
| 232 TimeDelta::FromMicroseconds(time_delta).InSecondsF(); | |
| 233 | |
| 234 last_cpu_time_ = time; | |
| 235 last_cpu_ = cpu; | |
| 236 | |
| 237 return percentage; | |
| 238 } | |
| 239 | |
| 240 // To have /proc/self/io file you must enable CONFIG_TASK_IO_ACCOUNTING | |
| 241 // in your kernel configuration. | |
| 242 bool ProcessMetrics::GetIOCounters(IoCounters* io_counters) const { | |
| 243 // Synchronously reading files in /proc does not hit the disk. | |
| 244 ThreadRestrictions::ScopedAllowIO allow_io; | |
| 245 | |
| 246 std::string proc_io_contents; | |
| 247 FilePath io_file = internal::GetProcPidDir(process_).Append("io"); | |
| 248 if (!ReadFileToString(io_file, &proc_io_contents)) | |
| 249 return false; | |
| 250 | |
| 251 io_counters->OtherOperationCount = 0; | |
| 252 io_counters->OtherTransferCount = 0; | |
| 253 | |
| 254 StringPairs pairs; | |
| 255 SplitStringIntoKeyValuePairs(proc_io_contents, ':', '\n', &pairs); | |
| 256 TrimKeyValuePairs(&pairs); | |
| 257 for (size_t i = 0; i < pairs.size(); ++i) { | |
| 258 const std::string& key = pairs[i].first; | |
| 259 const std::string& value_str = pairs[i].second; | |
| 260 uint64* target_counter = NULL; | |
| 261 if (key == "syscr") | |
| 262 target_counter = &io_counters->ReadOperationCount; | |
| 263 else if (key == "syscw") | |
| 264 target_counter = &io_counters->WriteOperationCount; | |
| 265 else if (key == "rchar") | |
| 266 target_counter = &io_counters->ReadTransferCount; | |
| 267 else if (key == "wchar") | |
| 268 target_counter = &io_counters->WriteTransferCount; | |
| 269 if (!target_counter) | |
| 270 continue; | |
| 271 bool converted = StringToUint64(value_str, target_counter); | |
| 272 DCHECK(converted); | |
| 273 } | |
| 274 return true; | |
| 275 } | |
| 276 | |
| 277 ProcessMetrics::ProcessMetrics(ProcessHandle process) | |
| 278 : process_(process), | |
| 279 last_system_time_(0), | |
| 280 #if defined(OS_LINUX) | |
| 281 last_absolute_idle_wakeups_(0), | |
| 282 #endif | |
| 283 last_cpu_(0) { | |
| 284 processor_count_ = SysInfo::NumberOfProcessors(); | |
| 285 } | |
| 286 | |
| 287 #if defined(OS_CHROMEOS) | |
| 288 // Private, Shared and Proportional working set sizes are obtained from | |
| 289 // /proc/<pid>/totmaps | |
| 290 bool ProcessMetrics::GetWorkingSetKBytesTotmaps(WorkingSetKBytes *ws_usage) | |
| 291 const { | |
| 292 // The format of /proc/<pid>/totmaps is: | |
| 293 // | |
| 294 // Rss: 6120 kB | |
| 295 // Pss: 3335 kB | |
| 296 // Shared_Clean: 1008 kB | |
| 297 // Shared_Dirty: 4012 kB | |
| 298 // Private_Clean: 4 kB | |
| 299 // Private_Dirty: 1096 kB | |
| 300 // Referenced: XXX kB | |
| 301 // Anonymous: XXX kB | |
| 302 // AnonHugePages: XXX kB | |
| 303 // Swap: XXX kB | |
| 304 // Locked: XXX kB | |
| 305 const size_t kPssIndex = (1 * 3) + 1; | |
| 306 const size_t kPrivate_CleanIndex = (4 * 3) + 1; | |
| 307 const size_t kPrivate_DirtyIndex = (5 * 3) + 1; | |
| 308 const size_t kSwapIndex = (9 * 3) + 1; | |
| 309 | |
| 310 std::string totmaps_data; | |
| 311 { | |
| 312 FilePath totmaps_file = internal::GetProcPidDir(process_).Append("totmaps"); | |
| 313 ThreadRestrictions::ScopedAllowIO allow_io; | |
| 314 bool ret = ReadFileToString(totmaps_file, &totmaps_data); | |
| 315 if (!ret || totmaps_data.length() == 0) | |
| 316 return false; | |
| 317 } | |
| 318 | |
| 319 std::vector<std::string> totmaps_fields; | |
| 320 SplitStringAlongWhitespace(totmaps_data, &totmaps_fields); | |
| 321 | |
| 322 DCHECK_EQ("Pss:", totmaps_fields[kPssIndex-1]); | |
| 323 DCHECK_EQ("Private_Clean:", totmaps_fields[kPrivate_CleanIndex - 1]); | |
| 324 DCHECK_EQ("Private_Dirty:", totmaps_fields[kPrivate_DirtyIndex - 1]); | |
| 325 DCHECK_EQ("Swap:", totmaps_fields[kSwapIndex-1]); | |
| 326 | |
| 327 int pss = 0; | |
| 328 int private_clean = 0; | |
| 329 int private_dirty = 0; | |
| 330 int swap = 0; | |
| 331 bool ret = true; | |
| 332 ret &= StringToInt(totmaps_fields[kPssIndex], &pss); | |
| 333 ret &= StringToInt(totmaps_fields[kPrivate_CleanIndex], &private_clean); | |
| 334 ret &= StringToInt(totmaps_fields[kPrivate_DirtyIndex], &private_dirty); | |
| 335 ret &= StringToInt(totmaps_fields[kSwapIndex], &swap); | |
| 336 | |
| 337 // On ChromeOS swap is to zram. We count this as private / shared, as | |
| 338 // increased swap decreases available RAM to user processes, which would | |
| 339 // otherwise create surprising results. | |
| 340 ws_usage->priv = private_clean + private_dirty + swap; | |
| 341 ws_usage->shared = pss + swap; | |
| 342 ws_usage->shareable = 0; | |
| 343 ws_usage->swapped = swap; | |
| 344 return ret; | |
| 345 } | |
| 346 #endif | |
| 347 | |
| 348 // Private and Shared working set sizes are obtained from /proc/<pid>/statm. | |
| 349 bool ProcessMetrics::GetWorkingSetKBytesStatm(WorkingSetKBytes* ws_usage) | |
| 350 const { | |
| 351 // Use statm instead of smaps because smaps is: | |
| 352 // a) Large and slow to parse. | |
| 353 // b) Unavailable in the SUID sandbox. | |
| 354 | |
| 355 // First we need to get the page size, since everything is measured in pages. | |
| 356 // For details, see: man 5 proc. | |
| 357 const int page_size_kb = getpagesize() / 1024; | |
| 358 if (page_size_kb <= 0) | |
| 359 return false; | |
| 360 | |
| 361 std::string statm; | |
| 362 { | |
| 363 FilePath statm_file = internal::GetProcPidDir(process_).Append("statm"); | |
| 364 // Synchronously reading files in /proc does not hit the disk. | |
| 365 ThreadRestrictions::ScopedAllowIO allow_io; | |
| 366 bool ret = ReadFileToString(statm_file, &statm); | |
| 367 if (!ret || statm.length() == 0) | |
| 368 return false; | |
| 369 } | |
| 370 | |
| 371 std::vector<std::string> statm_vec; | |
| 372 SplitString(statm, ' ', &statm_vec); | |
| 373 if (statm_vec.size() != 7) | |
| 374 return false; // Not the format we expect. | |
| 375 | |
| 376 int statm_rss, statm_shared; | |
| 377 bool ret = true; | |
| 378 ret &= StringToInt(statm_vec[1], &statm_rss); | |
| 379 ret &= StringToInt(statm_vec[2], &statm_shared); | |
| 380 | |
| 381 ws_usage->priv = (statm_rss - statm_shared) * page_size_kb; | |
| 382 ws_usage->shared = statm_shared * page_size_kb; | |
| 383 | |
| 384 // Sharable is not calculated, as it does not provide interesting data. | |
| 385 ws_usage->shareable = 0; | |
| 386 | |
| 387 #if defined(OS_CHROMEOS) | |
| 388 // Can't get swapped memory from statm. | |
| 389 ws_usage->swapped = 0; | |
| 390 #endif | |
| 391 | |
| 392 return ret; | |
| 393 } | |
| 394 | |
| 395 size_t GetSystemCommitCharge() { | |
| 396 SystemMemoryInfoKB meminfo; | |
| 397 if (!GetSystemMemoryInfo(&meminfo)) | |
| 398 return 0; | |
| 399 return meminfo.total - meminfo.free - meminfo.buffers - meminfo.cached; | |
| 400 } | |
| 401 | |
| 402 int ParseProcStatCPU(const std::string& input) { | |
| 403 // |input| may be empty if the process disappeared somehow. | |
| 404 // e.g. http://crbug.com/145811. | |
| 405 if (input.empty()) | |
| 406 return -1; | |
| 407 | |
| 408 size_t start = input.find_last_of(')'); | |
| 409 if (start == input.npos) | |
| 410 return -1; | |
| 411 | |
| 412 // Number of spaces remaining until reaching utime's index starting after the | |
| 413 // last ')'. | |
| 414 int num_spaces_remaining = internal::VM_UTIME - 1; | |
| 415 | |
| 416 size_t i = start; | |
| 417 while ((i = input.find(' ', i + 1)) != input.npos) { | |
| 418 // Validate the assumption that there aren't any contiguous spaces | |
| 419 // in |input| before utime. | |
| 420 DCHECK_NE(input[i - 1], ' '); | |
| 421 if (--num_spaces_remaining == 0) { | |
| 422 int utime = 0; | |
| 423 int stime = 0; | |
| 424 if (sscanf(&input.data()[i], "%d %d", &utime, &stime) != 2) | |
| 425 return -1; | |
| 426 | |
| 427 return utime + stime; | |
| 428 } | |
| 429 } | |
| 430 | |
| 431 return -1; | |
| 432 } | |
| 433 | |
| 434 const char kProcSelfExe[] = "/proc/self/exe"; | |
| 435 | |
| 436 int GetNumberOfThreads(ProcessHandle process) { | |
| 437 return internal::ReadProcStatsAndGetFieldAsInt64(process, | |
| 438 internal::VM_NUMTHREADS); | |
| 439 } | |
| 440 | |
| 441 namespace { | |
| 442 | |
| 443 // The format of /proc/diskstats is: | |
| 444 // Device major number | |
| 445 // Device minor number | |
| 446 // Device name | |
| 447 // Field 1 -- # of reads completed | |
| 448 // This is the total number of reads completed successfully. | |
| 449 // Field 2 -- # of reads merged, field 6 -- # of writes merged | |
| 450 // Reads and writes which are adjacent to each other may be merged for | |
| 451 // efficiency. Thus two 4K reads may become one 8K read before it is | |
| 452 // ultimately handed to the disk, and so it will be counted (and queued) | |
| 453 // as only one I/O. This field lets you know how often this was done. | |
| 454 // Field 3 -- # of sectors read | |
| 455 // This is the total number of sectors read successfully. | |
| 456 // Field 4 -- # of milliseconds spent reading | |
| 457 // This is the total number of milliseconds spent by all reads (as | |
| 458 // measured from __make_request() to end_that_request_last()). | |
| 459 // Field 5 -- # of writes completed | |
| 460 // This is the total number of writes completed successfully. | |
| 461 // Field 6 -- # of writes merged | |
| 462 // See the description of field 2. | |
| 463 // Field 7 -- # of sectors written | |
| 464 // This is the total number of sectors written successfully. | |
| 465 // Field 8 -- # of milliseconds spent writing | |
| 466 // This is the total number of milliseconds spent by all writes (as | |
| 467 // measured from __make_request() to end_that_request_last()). | |
| 468 // Field 9 -- # of I/Os currently in progress | |
| 469 // The only field that should go to zero. Incremented as requests are | |
| 470 // given to appropriate struct request_queue and decremented as they | |
| 471 // finish. | |
| 472 // Field 10 -- # of milliseconds spent doing I/Os | |
| 473 // This field increases so long as field 9 is nonzero. | |
| 474 // Field 11 -- weighted # of milliseconds spent doing I/Os | |
| 475 // This field is incremented at each I/O start, I/O completion, I/O | |
| 476 // merge, or read of these stats by the number of I/Os in progress | |
| 477 // (field 9) times the number of milliseconds spent doing I/O since the | |
| 478 // last update of this field. This can provide an easy measure of both | |
| 479 // I/O completion time and the backlog that may be accumulating. | |
| 480 | |
| 481 const size_t kDiskDriveName = 2; | |
| 482 const size_t kDiskReads = 3; | |
| 483 const size_t kDiskReadsMerged = 4; | |
| 484 const size_t kDiskSectorsRead = 5; | |
| 485 const size_t kDiskReadTime = 6; | |
| 486 const size_t kDiskWrites = 7; | |
| 487 const size_t kDiskWritesMerged = 8; | |
| 488 const size_t kDiskSectorsWritten = 9; | |
| 489 const size_t kDiskWriteTime = 10; | |
| 490 const size_t kDiskIO = 11; | |
| 491 const size_t kDiskIOTime = 12; | |
| 492 const size_t kDiskWeightedIOTime = 13; | |
| 493 | |
| 494 } // namespace | |
| 495 | |
| 496 SystemMemoryInfoKB::SystemMemoryInfoKB() { | |
| 497 total = 0; | |
| 498 free = 0; | |
| 499 buffers = 0; | |
| 500 cached = 0; | |
| 501 active_anon = 0; | |
| 502 inactive_anon = 0; | |
| 503 active_file = 0; | |
| 504 inactive_file = 0; | |
| 505 swap_total = 0; | |
| 506 swap_free = 0; | |
| 507 dirty = 0; | |
| 508 | |
| 509 pswpin = 0; | |
| 510 pswpout = 0; | |
| 511 pgmajfault = 0; | |
| 512 | |
| 513 #ifdef OS_CHROMEOS | |
| 514 shmem = 0; | |
| 515 slab = 0; | |
| 516 gem_objects = -1; | |
| 517 gem_size = -1; | |
| 518 #endif | |
| 519 } | |
| 520 | |
| 521 scoped_ptr<Value> SystemMemoryInfoKB::ToValue() const { | |
| 522 scoped_ptr<DictionaryValue> res(new DictionaryValue()); | |
| 523 | |
| 524 res->SetInteger("total", total); | |
| 525 res->SetInteger("free", free); | |
| 526 res->SetInteger("buffers", buffers); | |
| 527 res->SetInteger("cached", cached); | |
| 528 res->SetInteger("active_anon", active_anon); | |
| 529 res->SetInteger("inactive_anon", inactive_anon); | |
| 530 res->SetInteger("active_file", active_file); | |
| 531 res->SetInteger("inactive_file", inactive_file); | |
| 532 res->SetInteger("swap_total", swap_total); | |
| 533 res->SetInteger("swap_free", swap_free); | |
| 534 res->SetInteger("swap_used", swap_total - swap_free); | |
| 535 res->SetInteger("dirty", dirty); | |
| 536 res->SetInteger("pswpin", pswpin); | |
| 537 res->SetInteger("pswpout", pswpout); | |
| 538 res->SetInteger("pgmajfault", pgmajfault); | |
| 539 #ifdef OS_CHROMEOS | |
| 540 res->SetInteger("shmem", shmem); | |
| 541 res->SetInteger("slab", slab); | |
| 542 res->SetInteger("gem_objects", gem_objects); | |
| 543 res->SetInteger("gem_size", gem_size); | |
| 544 #endif | |
| 545 | |
| 546 return res.Pass(); | |
| 547 } | |
| 548 | |
| 549 // exposed for testing | |
| 550 bool ParseProcMeminfo(const std::string& meminfo_data, | |
| 551 SystemMemoryInfoKB* meminfo) { | |
| 552 // The format of /proc/meminfo is: | |
| 553 // | |
| 554 // MemTotal: 8235324 kB | |
| 555 // MemFree: 1628304 kB | |
| 556 // Buffers: 429596 kB | |
| 557 // Cached: 4728232 kB | |
| 558 // ... | |
| 559 // There is no guarantee on the ordering or position | |
| 560 // though it doesn't appear to change very often | |
| 561 | |
| 562 // As a basic sanity check, let's make sure we at least get non-zero | |
| 563 // MemTotal value | |
| 564 meminfo->total = 0; | |
| 565 | |
| 566 for (const StringPiece& line : SplitStringPiece( | |
| 567 meminfo_data, "\n", KEEP_WHITESPACE, SPLIT_WANT_NONEMPTY)) { | |
| 568 std::vector<StringPiece> tokens = SplitStringPiece( | |
| 569 line, kWhitespaceASCII, TRIM_WHITESPACE, SPLIT_WANT_NONEMPTY); | |
| 570 // HugePages_* only has a number and no suffix so we can't rely on | |
| 571 // there being exactly 3 tokens. | |
| 572 if (tokens.size() <= 1) { | |
| 573 DLOG(WARNING) << "meminfo: tokens: " << tokens.size() | |
| 574 << " malformed line: " << line.as_string(); | |
| 575 continue; | |
| 576 } | |
| 577 | |
| 578 int* target = NULL; | |
| 579 if (tokens[0] == "MemTotal:") | |
| 580 target = &meminfo->total; | |
| 581 else if (tokens[0] == "MemFree:") | |
| 582 target = &meminfo->free; | |
| 583 else if (tokens[0] == "Buffers:") | |
| 584 target = &meminfo->buffers; | |
| 585 else if (tokens[0] == "Cached:") | |
| 586 target = &meminfo->cached; | |
| 587 else if (tokens[0] == "Active(anon):") | |
| 588 target = &meminfo->active_anon; | |
| 589 else if (tokens[0] == "Inactive(anon):") | |
| 590 target = &meminfo->inactive_anon; | |
| 591 else if (tokens[0] == "Active(file):") | |
| 592 target = &meminfo->active_file; | |
| 593 else if (tokens[0] == "Inactive(file):") | |
| 594 target = &meminfo->inactive_file; | |
| 595 else if (tokens[0] == "SwapTotal:") | |
| 596 target = &meminfo->swap_total; | |
| 597 else if (tokens[0] == "SwapFree:") | |
| 598 target = &meminfo->swap_free; | |
| 599 else if (tokens[0] == "Dirty:") | |
| 600 target = &meminfo->dirty; | |
| 601 #if defined(OS_CHROMEOS) | |
| 602 // Chrome OS has a tweaked kernel that allows us to query Shmem, which is | |
| 603 // usually video memory otherwise invisible to the OS. | |
| 604 else if (tokens[0] == "Shmem:") | |
| 605 target = &meminfo->shmem; | |
| 606 else if (tokens[0] == "Slab:") | |
| 607 target = &meminfo->slab; | |
| 608 #endif | |
| 609 if (target) | |
| 610 StringToInt(tokens[1], target); | |
| 611 } | |
| 612 | |
| 613 // Make sure we got a valid MemTotal. | |
| 614 return meminfo->total > 0; | |
| 615 } | |
| 616 | |
| 617 // exposed for testing | |
| 618 bool ParseProcVmstat(const std::string& vmstat_data, | |
| 619 SystemMemoryInfoKB* meminfo) { | |
| 620 // The format of /proc/vmstat is: | |
| 621 // | |
| 622 // nr_free_pages 299878 | |
| 623 // nr_inactive_anon 239863 | |
| 624 // nr_active_anon 1318966 | |
| 625 // nr_inactive_file 2015629 | |
| 626 // ... | |
| 627 // | |
| 628 // We iterate through the whole file because the position of the | |
| 629 // fields are dependent on the kernel version and configuration. | |
| 630 | |
| 631 for (const StringPiece& line : SplitStringPiece( | |
| 632 vmstat_data, "\n", KEEP_WHITESPACE, SPLIT_WANT_NONEMPTY)) { | |
| 633 std::vector<StringPiece> tokens = | |
| 634 SplitStringPiece(line, " ", KEEP_WHITESPACE, SPLIT_WANT_NONEMPTY); | |
| 635 if (tokens.size() != 2) | |
| 636 continue; | |
| 637 | |
| 638 if (tokens[0] == "pswpin") { | |
| 639 StringToInt(tokens[1], &meminfo->pswpin); | |
| 640 } else if (tokens[0] == "pswpout") { | |
| 641 StringToInt(tokens[1], &meminfo->pswpout); | |
| 642 } else if (tokens[0] == "pgmajfault") { | |
| 643 StringToInt(tokens[1], &meminfo->pgmajfault); | |
| 644 } | |
| 645 } | |
| 646 | |
| 647 return true; | |
| 648 } | |
| 649 | |
| 650 bool GetSystemMemoryInfo(SystemMemoryInfoKB* meminfo) { | |
| 651 // Synchronously reading files in /proc and /sys are safe. | |
| 652 ThreadRestrictions::ScopedAllowIO allow_io; | |
| 653 | |
| 654 // Used memory is: total - free - buffers - caches | |
| 655 FilePath meminfo_file("/proc/meminfo"); | |
| 656 std::string meminfo_data; | |
| 657 if (!ReadFileToString(meminfo_file, &meminfo_data)) { | |
| 658 DLOG(WARNING) << "Failed to open " << meminfo_file.value(); | |
| 659 return false; | |
| 660 } | |
| 661 | |
| 662 if (!ParseProcMeminfo(meminfo_data, meminfo)) { | |
| 663 DLOG(WARNING) << "Failed to parse " << meminfo_file.value(); | |
| 664 return false; | |
| 665 } | |
| 666 | |
| 667 #if defined(OS_CHROMEOS) | |
| 668 // Report on Chrome OS GEM object graphics memory. /run/debugfs_gpu is a | |
| 669 // bind mount into /sys/kernel/debug and synchronously reading the in-memory | |
| 670 // files in /sys is fast. | |
| 671 #if defined(ARCH_CPU_ARM_FAMILY) | |
| 672 FilePath geminfo_file("/run/debugfs_gpu/exynos_gem_objects"); | |
| 673 #else | |
| 674 FilePath geminfo_file("/run/debugfs_gpu/i915_gem_objects"); | |
| 675 #endif | |
| 676 std::string geminfo_data; | |
| 677 meminfo->gem_objects = -1; | |
| 678 meminfo->gem_size = -1; | |
| 679 if (ReadFileToString(geminfo_file, &geminfo_data)) { | |
| 680 int gem_objects = -1; | |
| 681 long long gem_size = -1; | |
| 682 int num_res = sscanf(geminfo_data.c_str(), | |
| 683 "%d objects, %lld bytes", | |
| 684 &gem_objects, &gem_size); | |
| 685 if (num_res == 2) { | |
| 686 meminfo->gem_objects = gem_objects; | |
| 687 meminfo->gem_size = gem_size; | |
| 688 } | |
| 689 } | |
| 690 | |
| 691 #if defined(ARCH_CPU_ARM_FAMILY) | |
| 692 // Incorporate Mali graphics memory if present. | |
| 693 FilePath mali_memory_file("/sys/class/misc/mali0/device/memory"); | |
| 694 std::string mali_memory_data; | |
| 695 if (ReadFileToString(mali_memory_file, &mali_memory_data)) { | |
| 696 long long mali_size = -1; | |
| 697 int num_res = sscanf(mali_memory_data.c_str(), "%lld bytes", &mali_size); | |
| 698 if (num_res == 1) | |
| 699 meminfo->gem_size += mali_size; | |
| 700 } | |
| 701 #endif // defined(ARCH_CPU_ARM_FAMILY) | |
| 702 #endif // defined(OS_CHROMEOS) | |
| 703 | |
| 704 FilePath vmstat_file("/proc/vmstat"); | |
| 705 std::string vmstat_data; | |
| 706 if (!ReadFileToString(vmstat_file, &vmstat_data)) { | |
| 707 DLOG(WARNING) << "Failed to open " << vmstat_file.value(); | |
| 708 return false; | |
| 709 } | |
| 710 if (!ParseProcVmstat(vmstat_data, meminfo)) { | |
| 711 DLOG(WARNING) << "Failed to parse " << vmstat_file.value(); | |
| 712 return false; | |
| 713 } | |
| 714 | |
| 715 return true; | |
| 716 } | |
| 717 | |
| 718 SystemDiskInfo::SystemDiskInfo() { | |
| 719 reads = 0; | |
| 720 reads_merged = 0; | |
| 721 sectors_read = 0; | |
| 722 read_time = 0; | |
| 723 writes = 0; | |
| 724 writes_merged = 0; | |
| 725 sectors_written = 0; | |
| 726 write_time = 0; | |
| 727 io = 0; | |
| 728 io_time = 0; | |
| 729 weighted_io_time = 0; | |
| 730 } | |
| 731 | |
| 732 scoped_ptr<Value> SystemDiskInfo::ToValue() const { | |
| 733 scoped_ptr<DictionaryValue> res(new DictionaryValue()); | |
| 734 | |
| 735 // Write out uint64 variables as doubles. | |
| 736 // Note: this may discard some precision, but for JS there's no other option. | |
| 737 res->SetDouble("reads", static_cast<double>(reads)); | |
| 738 res->SetDouble("reads_merged", static_cast<double>(reads_merged)); | |
| 739 res->SetDouble("sectors_read", static_cast<double>(sectors_read)); | |
| 740 res->SetDouble("read_time", static_cast<double>(read_time)); | |
| 741 res->SetDouble("writes", static_cast<double>(writes)); | |
| 742 res->SetDouble("writes_merged", static_cast<double>(writes_merged)); | |
| 743 res->SetDouble("sectors_written", static_cast<double>(sectors_written)); | |
| 744 res->SetDouble("write_time", static_cast<double>(write_time)); | |
| 745 res->SetDouble("io", static_cast<double>(io)); | |
| 746 res->SetDouble("io_time", static_cast<double>(io_time)); | |
| 747 res->SetDouble("weighted_io_time", static_cast<double>(weighted_io_time)); | |
| 748 | |
| 749 return res.Pass(); | |
| 750 } | |
| 751 | |
| 752 bool IsValidDiskName(const std::string& candidate) { | |
| 753 if (candidate.length() < 3) | |
| 754 return false; | |
| 755 if (candidate[1] == 'd' && | |
| 756 (candidate[0] == 'h' || candidate[0] == 's' || candidate[0] == 'v')) { | |
| 757 // [hsv]d[a-z]+ case | |
| 758 for (size_t i = 2; i < candidate.length(); ++i) { | |
| 759 if (!islower(candidate[i])) | |
| 760 return false; | |
| 761 } | |
| 762 return true; | |
| 763 } | |
| 764 | |
| 765 const char kMMCName[] = "mmcblk"; | |
| 766 const size_t kMMCNameLen = strlen(kMMCName); | |
| 767 if (candidate.length() < kMMCNameLen + 1) | |
| 768 return false; | |
| 769 if (candidate.compare(0, kMMCNameLen, kMMCName) != 0) | |
| 770 return false; | |
| 771 | |
| 772 // mmcblk[0-9]+ case | |
| 773 for (size_t i = kMMCNameLen; i < candidate.length(); ++i) { | |
| 774 if (!isdigit(candidate[i])) | |
| 775 return false; | |
| 776 } | |
| 777 return true; | |
| 778 } | |
| 779 | |
| 780 bool GetSystemDiskInfo(SystemDiskInfo* diskinfo) { | |
| 781 // Synchronously reading files in /proc does not hit the disk. | |
| 782 ThreadRestrictions::ScopedAllowIO allow_io; | |
| 783 | |
| 784 FilePath diskinfo_file("/proc/diskstats"); | |
| 785 std::string diskinfo_data; | |
| 786 if (!ReadFileToString(diskinfo_file, &diskinfo_data)) { | |
| 787 DLOG(WARNING) << "Failed to open " << diskinfo_file.value(); | |
| 788 return false; | |
| 789 } | |
| 790 | |
| 791 std::vector<StringPiece> diskinfo_lines = SplitStringPiece( | |
| 792 diskinfo_data, "\n", KEEP_WHITESPACE, SPLIT_WANT_NONEMPTY); | |
| 793 if (diskinfo_lines.size() == 0) { | |
| 794 DLOG(WARNING) << "No lines found"; | |
| 795 return false; | |
| 796 } | |
| 797 | |
| 798 diskinfo->reads = 0; | |
| 799 diskinfo->reads_merged = 0; | |
| 800 diskinfo->sectors_read = 0; | |
| 801 diskinfo->read_time = 0; | |
| 802 diskinfo->writes = 0; | |
| 803 diskinfo->writes_merged = 0; | |
| 804 diskinfo->sectors_written = 0; | |
| 805 diskinfo->write_time = 0; | |
| 806 diskinfo->io = 0; | |
| 807 diskinfo->io_time = 0; | |
| 808 diskinfo->weighted_io_time = 0; | |
| 809 | |
| 810 uint64 reads = 0; | |
| 811 uint64 reads_merged = 0; | |
| 812 uint64 sectors_read = 0; | |
| 813 uint64 read_time = 0; | |
| 814 uint64 writes = 0; | |
| 815 uint64 writes_merged = 0; | |
| 816 uint64 sectors_written = 0; | |
| 817 uint64 write_time = 0; | |
| 818 uint64 io = 0; | |
| 819 uint64 io_time = 0; | |
| 820 uint64 weighted_io_time = 0; | |
| 821 | |
| 822 for (const StringPiece& line : diskinfo_lines) { | |
| 823 std::vector<StringPiece> disk_fields = SplitStringPiece( | |
| 824 line, kWhitespaceASCII, TRIM_WHITESPACE, SPLIT_WANT_NONEMPTY); | |
| 825 | |
| 826 // Fields may have overflowed and reset to zero. | |
| 827 if (IsValidDiskName(disk_fields[kDiskDriveName].as_string())) { | |
| 828 StringToUint64(disk_fields[kDiskReads], &reads); | |
| 829 StringToUint64(disk_fields[kDiskReadsMerged], &reads_merged); | |
| 830 StringToUint64(disk_fields[kDiskSectorsRead], §ors_read); | |
| 831 StringToUint64(disk_fields[kDiskReadTime], &read_time); | |
| 832 StringToUint64(disk_fields[kDiskWrites], &writes); | |
| 833 StringToUint64(disk_fields[kDiskWritesMerged], &writes_merged); | |
| 834 StringToUint64(disk_fields[kDiskSectorsWritten], §ors_written); | |
| 835 StringToUint64(disk_fields[kDiskWriteTime], &write_time); | |
| 836 StringToUint64(disk_fields[kDiskIO], &io); | |
| 837 StringToUint64(disk_fields[kDiskIOTime], &io_time); | |
| 838 StringToUint64(disk_fields[kDiskWeightedIOTime], &weighted_io_time); | |
| 839 | |
| 840 diskinfo->reads += reads; | |
| 841 diskinfo->reads_merged += reads_merged; | |
| 842 diskinfo->sectors_read += sectors_read; | |
| 843 diskinfo->read_time += read_time; | |
| 844 diskinfo->writes += writes; | |
| 845 diskinfo->writes_merged += writes_merged; | |
| 846 diskinfo->sectors_written += sectors_written; | |
| 847 diskinfo->write_time += write_time; | |
| 848 diskinfo->io += io; | |
| 849 diskinfo->io_time += io_time; | |
| 850 diskinfo->weighted_io_time += weighted_io_time; | |
| 851 } | |
| 852 } | |
| 853 | |
| 854 return true; | |
| 855 } | |
| 856 | |
| 857 #if defined(OS_CHROMEOS) | |
| 858 scoped_ptr<Value> SwapInfo::ToValue() const { | |
| 859 scoped_ptr<DictionaryValue> res(new DictionaryValue()); | |
| 860 | |
| 861 // Write out uint64 variables as doubles. | |
| 862 // Note: this may discard some precision, but for JS there's no other option. | |
| 863 res->SetDouble("num_reads", static_cast<double>(num_reads)); | |
| 864 res->SetDouble("num_writes", static_cast<double>(num_writes)); | |
| 865 res->SetDouble("orig_data_size", static_cast<double>(orig_data_size)); | |
| 866 res->SetDouble("compr_data_size", static_cast<double>(compr_data_size)); | |
| 867 res->SetDouble("mem_used_total", static_cast<double>(mem_used_total)); | |
| 868 if (compr_data_size > 0) | |
| 869 res->SetDouble("compression_ratio", static_cast<double>(orig_data_size) / | |
| 870 static_cast<double>(compr_data_size)); | |
| 871 else | |
| 872 res->SetDouble("compression_ratio", 0); | |
| 873 | |
| 874 return res.Pass(); | |
| 875 } | |
| 876 | |
| 877 void GetSwapInfo(SwapInfo* swap_info) { | |
| 878 // Synchronously reading files in /sys/block/zram0 does not hit the disk. | |
| 879 ThreadRestrictions::ScopedAllowIO allow_io; | |
| 880 | |
| 881 FilePath zram_path("/sys/block/zram0"); | |
| 882 uint64 orig_data_size = ReadFileToUint64(zram_path.Append("orig_data_size")); | |
| 883 if (orig_data_size <= 4096) { | |
| 884 // A single page is compressed at startup, and has a high compression | |
| 885 // ratio. We ignore this as it doesn't indicate any real swapping. | |
| 886 swap_info->orig_data_size = 0; | |
| 887 swap_info->num_reads = 0; | |
| 888 swap_info->num_writes = 0; | |
| 889 swap_info->compr_data_size = 0; | |
| 890 swap_info->mem_used_total = 0; | |
| 891 return; | |
| 892 } | |
| 893 swap_info->orig_data_size = orig_data_size; | |
| 894 swap_info->num_reads = ReadFileToUint64(zram_path.Append("num_reads")); | |
| 895 swap_info->num_writes = ReadFileToUint64(zram_path.Append("num_writes")); | |
| 896 swap_info->compr_data_size = | |
| 897 ReadFileToUint64(zram_path.Append("compr_data_size")); | |
| 898 swap_info->mem_used_total = | |
| 899 ReadFileToUint64(zram_path.Append("mem_used_total")); | |
| 900 } | |
| 901 #endif // defined(OS_CHROMEOS) | |
| 902 | |
| 903 #if defined(OS_LINUX) | |
| 904 int ProcessMetrics::GetIdleWakeupsPerSecond() { | |
| 905 uint64 wake_ups; | |
| 906 const char kWakeupStat[] = "se.statistics.nr_wakeups"; | |
| 907 return ReadProcSchedAndGetFieldAsUint64(process_, kWakeupStat, &wake_ups) ? | |
| 908 CalculateIdleWakeupsPerSecond(wake_ups) : 0; | |
| 909 } | |
| 910 #endif // defined(OS_LINUX) | |
| 911 | |
| 912 } // namespace base | |
| OLD | NEW |
|---|
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