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| 1 // Copyright 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 "components/startup_metric_utils/startup_metric_utils.h" | |
| 6 | |
| 7 #include "base/containers/hash_tables.h" | |
| 8 #include "base/environment.h" | |
| 9 #include "base/lazy_instance.h" | |
| 10 #include "base/logging.h" | |
| 11 #include "base/metrics/histogram_macros.h" | |
| 12 #include "base/strings/string_number_conversions.h" | |
| 13 #include "base/sys_info.h" | |
| 14 #include "base/trace_event/trace_event.h" | |
| 15 | |
| 16 #if defined(OS_WIN) | |
| 17 #include <winternl.h> | |
| 18 #include "base/win/windows_version.h" | |
| 19 #endif | |
| 20 | |
| 21 namespace startup_metric_utils { | |
| 22 | |
| 23 namespace { | |
| 24 | |
| 25 // Mark as volatile to defensively make sure usage is thread-safe. | |
| 26 // Note that at the time of this writing, access is only on the UI thread. | |
| 27 volatile bool g_non_browser_ui_displayed = false; | |
| 28 | |
| 29 base::LazyInstance<base::Time>::Leaky g_process_creation_time = | |
| 30 LAZY_INSTANCE_INITIALIZER; | |
| 31 | |
| 32 base::LazyInstance<base::Time>::Leaky g_main_entry_point_time = | |
| 33 LAZY_INSTANCE_INITIALIZER; | |
| 34 | |
| 35 StartupTemperature g_startup_temperature = UNCERTAIN_STARTUP_TEMPERATURE; | |
| 36 | |
| 37 #if defined(OS_WIN) | |
| 38 | |
| 39 // These values are taken from the Startup.BrowserMessageLoopStartHardFaultCount | |
| 40 // histogram. If the cold start histogram starts looking strongly bimodal it may | |
| 41 // be because the binary/resource sizes have grown significantly larger than | |
| 42 // when these values were set. In this case the new values need to be chosen | |
| 43 // from the original histogram. | |
| 44 // | |
| 45 // Maximum number of hard faults tolerated for a startup to be classified as a | |
| 46 // warm start. Set at roughly the 40th percentile of the HardFaultCount | |
| 47 // histogram. | |
| 48 const uint32_t WARM_START_HARD_FAULT_COUNT_THRESHOLD = 5; | |
| 49 // Minimum number of hard faults expected for a startup to be classified as a | |
| 50 // cold start. Set at roughly the 60th percentile of the HardFaultCount | |
| 51 // histogram. | |
| 52 const uint32_t COLD_START_HARD_FAULT_COUNT_THRESHOLD = 1200; | |
| 53 | |
| 54 // The struct used to return system process information via the NT internal | |
| 55 // QuerySystemInformation call. This is partially documented at | |
| 56 // http://goo.gl/Ja9MrH and fully documented at http://goo.gl/QJ70rn | |
| 57 // This structure is laid out in the same format on both 32-bit and 64-bit | |
| 58 // systems, but has a different size due to the various pointer-sized fields. | |
| 59 struct SYSTEM_PROCESS_INFORMATION_EX { | |
| 60 ULONG NextEntryOffset; | |
| 61 ULONG NumberOfThreads; | |
| 62 LARGE_INTEGER WorkingSetPrivateSize; | |
| 63 ULONG HardFaultCount; | |
| 64 BYTE Reserved1[36]; | |
| 65 PVOID Reserved2[3]; | |
| 66 // This is labeled a handle so that it expands to the correct size for 32-bit | |
| 67 // and 64-bit operating systems. However, under the hood it's a 32-bit DWORD | |
| 68 // containing the process ID. | |
| 69 HANDLE UniqueProcessId; | |
| 70 PVOID Reserved3; | |
| 71 ULONG HandleCount; | |
| 72 BYTE Reserved4[4]; | |
| 73 PVOID Reserved5[11]; | |
| 74 SIZE_T PeakPagefileUsage; | |
| 75 SIZE_T PrivatePageCount; | |
| 76 LARGE_INTEGER Reserved6[6]; | |
| 77 // Array of SYSTEM_THREAD_INFORMATION structs follows. | |
| 78 }; | |
| 79 | |
| 80 // The signature of the NtQuerySystemInformation function. | |
| 81 typedef NTSTATUS (WINAPI *NtQuerySystemInformationPtr)( | |
| 82 SYSTEM_INFORMATION_CLASS, PVOID, ULONG, PULONG); | |
| 83 | |
| 84 // Gets the hard fault count of the current process, returning it via | |
| 85 // |hard_fault_count|. Returns true on success, false otherwise. Also returns | |
| 86 // whether or not the system call was even possible for the current OS version | |
| 87 // via |has_os_support|. | |
| 88 bool GetHardFaultCountForCurrentProcess(uint32_t* hard_fault_count, | |
| 89 bool* has_os_support) { | |
| 90 DCHECK(hard_fault_count); | |
| 91 DCHECK(has_os_support); | |
| 92 | |
| 93 if (base::win::GetVersion() < base::win::VERSION_WIN7) { | |
| 94 *has_os_support = false; | |
| 95 return false; | |
| 96 } | |
| 97 // At this point the OS supports the required system call. | |
| 98 *has_os_support = true; | |
| 99 | |
| 100 // Get the function pointer. | |
| 101 NtQuerySystemInformationPtr query_sys_info = | |
| 102 reinterpret_cast<NtQuerySystemInformationPtr>( | |
| 103 ::GetProcAddress(GetModuleHandle(L"ntdll.dll"), | |
| 104 "NtQuerySystemInformation")); | |
| 105 if (query_sys_info == nullptr) | |
| 106 return false; | |
| 107 | |
| 108 // The output of this system call depends on the number of threads and | |
| 109 // processes on the entire system, and this can change between calls. Retry | |
| 110 // a small handful of times growing the buffer along the way. | |
| 111 // NOTE: The actual required size depends entirely on the number of processes | |
| 112 // and threads running on the system. The initial guess suffices for | |
| 113 // ~100s of processes and ~1000s of threads. | |
| 114 std::vector<uint8_t> buffer(32 * 1024); | |
| 115 for (size_t tries = 0; tries < 3; ++tries) { | |
| 116 ULONG return_length = 0; | |
| 117 NTSTATUS status = query_sys_info( | |
| 118 SystemProcessInformation, | |
| 119 buffer.data(), | |
| 120 static_cast<ULONG>(buffer.size()), | |
| 121 &return_length); | |
| 122 // Insufficient space in the buffer. | |
| 123 if (return_length > buffer.size()) { | |
| 124 buffer.resize(return_length); | |
| 125 continue; | |
| 126 } | |
| 127 if (NT_SUCCESS(status) && return_length <= buffer.size()) | |
| 128 break; | |
| 129 return false; | |
| 130 } | |
| 131 | |
| 132 // Look for the struct housing information for the current process. | |
| 133 DWORD proc_id = ::GetCurrentProcessId(); | |
| 134 size_t index = 0; | |
| 135 while (index < buffer.size()) { | |
| 136 DCHECK_LE(index + sizeof(SYSTEM_PROCESS_INFORMATION_EX), buffer.size()); | |
| 137 SYSTEM_PROCESS_INFORMATION_EX* proc_info = | |
| 138 reinterpret_cast<SYSTEM_PROCESS_INFORMATION_EX*>(buffer.data() + index); | |
| 139 if (reinterpret_cast<DWORD>(proc_info->UniqueProcessId) == proc_id) { | |
| 140 *hard_fault_count = proc_info->HardFaultCount; | |
| 141 return true; | |
| 142 } | |
| 143 // The list ends when NextEntryOffset is zero. This also prevents busy | |
| 144 // looping if the data is in fact invalid. | |
| 145 if (proc_info->NextEntryOffset <= 0) | |
| 146 return false; | |
| 147 index += proc_info->NextEntryOffset; | |
| 148 } | |
| 149 | |
| 150 return false; | |
| 151 } | |
| 152 | |
| 153 #endif // defined(OS_WIN) | |
| 154 | |
| 155 | |
| 156 // Helper macro for splitting out an UMA histogram based on cold or warm start. | |
| 157 // |type| is the histogram type, and corresponds to an UMA macro like | |
| 158 // UMA_HISTOGRAM_LONG_TIMES. It must be itself be a macro that only takes two | |
| 159 // parameters. | |
| 160 // |basename| is the basename of the histogram. A histogram of this name will | |
| 161 // always be recorded to. If the startup is either cold or warm then a value | |
| 162 // will also be recorded to the histogram with name |basename| and suffix | |
| 163 // ".ColdStart" or ".WarmStart", as appropriate. | |
| 164 // |value_expr| is an expression evaluating to the value to be recorded. This | |
| 165 // will be evaluated exactly once and cached, so side effects are not an issue. | |
| 166 #define UMA_HISTOGRAM_WITH_STARTUP_TEMPERATURE(type, basename, value_expr) \ | |
| 167 { \ | |
| 168 const auto kValue = value_expr; \ | |
| 169 /* Always record to the base histogram. */ \ | |
| 170 type(basename, kValue); \ | |
| 171 /* Record to the cold/warm suffixed histogram as appropriate. */ \ | |
| 172 if (g_startup_temperature == COLD_STARTUP_TEMPERATURE) { \ | |
| 173 type(basename ".ColdStartup", kValue); \ | |
| 174 } else if (g_startup_temperature == WARM_STARTUP_TEMPERATURE) { \ | |
| 175 type(basename ".WarmStartup", kValue); \ | |
| 176 } \ | |
| 177 } | |
| 178 | |
| 179 #define UMA_HISTOGRAM_AND_TRACE_WITH_STARTUP_TEMPERATURE(type, basename, \ | |
| 180 begin_time, end_time) \ | |
| 181 { \ | |
| 182 UMA_HISTOGRAM_WITH_STARTUP_TEMPERATURE(type, basename, \ | |
| 183 end_time - begin_time) \ | |
| 184 TRACE_EVENT_ASYNC_BEGIN_WITH_TIMESTAMP1( \ | |
| 185 "startup", basename, 0, \ | |
| 186 StartupTimeToTimeTicks(begin_time).ToInternalValue(), "Temperature", \ | |
| 187 g_startup_temperature); \ | |
| 188 TRACE_EVENT_ASYNC_END_WITH_TIMESTAMP1( \ | |
| 189 "startup", basename, 0, \ | |
| 190 StartupTimeToTimeTicks(end_time).ToInternalValue(), "Temperature", \ | |
| 191 g_startup_temperature); \ | |
| 192 } | |
| 193 | |
| 194 // On Windows, records the number of hard-faults that have occurred in the | |
| 195 // current chrome.exe process since it was started. This is a nop on other | |
| 196 // platforms. | |
| 197 // crbug.com/476923 | |
| 198 // TODO(chrisha): If this proves useful, use it to split startup stats in two. | |
| 199 void RecordHardFaultHistogram(bool is_first_run) { | |
| 200 #if defined(OS_WIN) | |
| 201 uint32_t hard_fault_count = 0; | |
| 202 bool has_os_support = false; | |
| 203 bool success = GetHardFaultCountForCurrentProcess( | |
| 204 &hard_fault_count, &has_os_support); | |
| 205 | |
| 206 // Log whether or not the system call was successful, assuming the OS was | |
| 207 // detected to support it. | |
| 208 if (has_os_support) { | |
| 209 UMA_HISTOGRAM_BOOLEAN( | |
| 210 "Startup.BrowserMessageLoopStartHardFaultCount.Success", | |
| 211 success); | |
| 212 } | |
| 213 | |
| 214 // Don't log a histogram value if unable to get the hard fault count. | |
| 215 if (!success) | |
| 216 return; | |
| 217 | |
| 218 // Hard fault counts are expected to be in the thousands range, | |
| 219 // corresponding to faulting in ~10s of MBs of code ~10s of KBs at a time. | |
| 220 // (Observed to vary from 1000 to 10000 on various test machines and | |
| 221 // platforms.) | |
| 222 if (is_first_run) { | |
| 223 UMA_HISTOGRAM_CUSTOM_COUNTS( | |
| 224 "Startup.BrowserMessageLoopStartHardFaultCount.FirstRun", | |
| 225 hard_fault_count, | |
| 226 0, 40000, 50); | |
| 227 } else { | |
| 228 UMA_HISTOGRAM_CUSTOM_COUNTS( | |
| 229 "Startup.BrowserMessageLoopStartHardFaultCount", | |
| 230 hard_fault_count, | |
| 231 0, 40000, 50); | |
| 232 } | |
| 233 | |
| 234 // Determine the startup type based on the number of observed hard faults. | |
| 235 DCHECK_EQ(UNCERTAIN_STARTUP_TEMPERATURE, g_startup_temperature); | |
| 236 if (hard_fault_count < WARM_START_HARD_FAULT_COUNT_THRESHOLD) { | |
| 237 g_startup_temperature = WARM_STARTUP_TEMPERATURE; | |
| 238 } else if (hard_fault_count >= COLD_START_HARD_FAULT_COUNT_THRESHOLD) { | |
| 239 g_startup_temperature = COLD_STARTUP_TEMPERATURE; | |
| 240 } | |
| 241 | |
| 242 // Record the startup 'temperature'. | |
| 243 UMA_HISTOGRAM_ENUMERATION( | |
| 244 "Startup.Temperature", g_startup_temperature, STARTUP_TEMPERATURE_MAX); | |
| 245 #endif // defined(OS_WIN) | |
| 246 } | |
| 247 | |
| 248 // Converts a base::Time value to a base::TimeTicks value. The conversion isn't | |
| 249 // exact, but is within the time delta taken to synchronously resolve | |
| 250 // base::Time::Now() and base::TimeTicks::Now() which in practice is pretty | |
| 251 // much instant compared to multi-seconds startup timings. | |
| 252 // TODO(gab): Find a precise way to do this (http://crbug.com/544131). | |
| 253 base::TimeTicks StartupTimeToTimeTicks(const base::Time& time) { | |
| 254 // First get a base which represents the same point in time in both units. | |
| 255 // The wall clock time it takes to gather both of these is the precision of | |
| 256 // this method. | |
| 257 static const base::Time time_base = base::Time::Now(); | |
| 258 static const base::TimeTicks trace_ticks_base = base::TimeTicks::Now(); | |
| 259 | |
| 260 // Then use the TimeDelta common ground between the two units to make the | |
| 261 // conversion. | |
| 262 const base::TimeDelta delta_since_base = time_base - time; | |
| 263 return trace_ticks_base - delta_since_base; | |
| 264 } | |
| 265 | |
| 266 // Record time of main entry so it can be read from Telemetry performance tests. | |
| 267 // TODO(jeremy): Remove once crbug.com/317481 is fixed. | |
| 268 void RecordMainEntryTimeHistogram() { | |
| 269 const int kLowWordMask = 0xFFFFFFFF; | |
| 270 const int kLower31BitsMask = 0x7FFFFFFF; | |
| 271 DCHECK(!MainEntryPointTime().is_null()); | |
| 272 base::TimeDelta browser_main_entry_time_absolute = | |
| 273 MainEntryPointTime() - base::Time::UnixEpoch(); | |
| 274 | |
| 275 uint64 browser_main_entry_time_raw_ms = | |
| 276 browser_main_entry_time_absolute.InMilliseconds(); | |
| 277 | |
| 278 base::TimeDelta browser_main_entry_time_raw_ms_high_word = | |
| 279 base::TimeDelta::FromMilliseconds( | |
| 280 (browser_main_entry_time_raw_ms >> 32) & kLowWordMask); | |
| 281 // Shift by one because histograms only support non-negative values. | |
| 282 base::TimeDelta browser_main_entry_time_raw_ms_low_word = | |
| 283 base::TimeDelta::FromMilliseconds( | |
| 284 (browser_main_entry_time_raw_ms >> 1) & kLower31BitsMask); | |
| 285 | |
| 286 // A timestamp is a 64 bit value, yet histograms can only store 32 bits. | |
| 287 LOCAL_HISTOGRAM_TIMES("Startup.BrowserMainEntryTimeAbsoluteHighWord", | |
| 288 browser_main_entry_time_raw_ms_high_word); | |
| 289 LOCAL_HISTOGRAM_TIMES("Startup.BrowserMainEntryTimeAbsoluteLowWord", | |
| 290 browser_main_entry_time_raw_ms_low_word); | |
| 291 } | |
| 292 | |
| 293 // Environment variable that stores the timestamp when the executable's main() | |
| 294 // function was entered. | |
| 295 const char kChromeMainTimeEnvVar[] = "CHROME_MAIN_TIME"; | |
| 296 | |
| 297 // Returns the time of main entry recorded from RecordExeMainEntryTime. | |
| 298 base::Time ExeMainEntryPointTime() { | |
| 299 scoped_ptr<base::Environment> env(base::Environment::Create()); | |
| 300 std::string time_string; | |
| 301 int64 time_int = 0; | |
| 302 if (env->GetVar(kChromeMainTimeEnvVar, &time_string) && | |
| 303 base::StringToInt64(time_string, &time_int)) { | |
| 304 return base::Time::FromInternalValue(time_int); | |
| 305 } | |
| 306 return base::Time(); | |
| 307 } | |
| 308 | |
| 309 } // namespace | |
| 310 | |
| 311 bool WasNonBrowserUIDisplayed() { | |
| 312 return g_non_browser_ui_displayed; | |
| 313 } | |
| 314 | |
| 315 void SetNonBrowserUIDisplayed() { | |
| 316 g_non_browser_ui_displayed = true; | |
| 317 } | |
| 318 | |
| 319 void RecordStartupProcessCreationTime(const base::Time& time) { | |
| 320 DCHECK(g_process_creation_time.Get().is_null()); | |
| 321 g_process_creation_time.Get() = time; | |
| 322 DCHECK(!g_process_creation_time.Get().is_null()); | |
| 323 } | |
| 324 | |
| 325 void RecordMainEntryPointTime(const base::Time& time) { | |
| 326 DCHECK(MainEntryPointTime().is_null()); | |
| 327 g_main_entry_point_time.Get() = time; | |
| 328 DCHECK(!MainEntryPointTime().is_null()); | |
| 329 } | |
| 330 | |
| 331 void RecordExeMainEntryPointTime(const base::Time& time) { | |
| 332 std::string exe_load_time = base::Int64ToString(time.ToInternalValue()); | |
| 333 scoped_ptr<base::Environment> env(base::Environment::Create()); | |
| 334 env->SetVar(kChromeMainTimeEnvVar, exe_load_time); | |
| 335 } | |
| 336 | |
| 337 void RecordBrowserMainMessageLoopStart(const base::Time& time, | |
| 338 bool is_first_run) { | |
| 339 RecordHardFaultHistogram(is_first_run); | |
| 340 RecordMainEntryTimeHistogram(); | |
| 341 | |
| 342 const base::Time& process_creation_time = g_process_creation_time.Get(); | |
| 343 if (!is_first_run && !process_creation_time.is_null()) { | |
| 344 UMA_HISTOGRAM_AND_TRACE_WITH_STARTUP_TEMPERATURE( | |
| 345 UMA_HISTOGRAM_LONG_TIMES_100, "Startup.BrowserMessageLoopStartTime", | |
| 346 process_creation_time, time); | |
| 347 } | |
| 348 | |
| 349 // Bail if uptime < 7 minutes, to filter out cases where Chrome may have been | |
| 350 // autostarted and the machine is under io pressure. | |
| 351 if (base::SysInfo::Uptime() < base::TimeDelta::FromMinutes(7)) | |
| 352 return; | |
| 353 | |
| 354 // The Startup.BrowserMessageLoopStartTime histogram exhibits instability in | |
| 355 // the field which limits its usefulness in all scenarios except when we have | |
| 356 // a very large sample size. Attempt to mitigate this with a new metric: | |
| 357 // * Measure time from main entry rather than the OS' notion of process start. | |
| 358 // * Only measure launches that occur 7 minutes after boot to try to avoid | |
| 359 // cases where Chrome is auto-started and IO is heavily loaded. | |
| 360 const base::Time dll_main_time = MainEntryPointTime(); | |
| 361 if (is_first_run) { | |
| 362 UMA_HISTOGRAM_AND_TRACE_WITH_STARTUP_TEMPERATURE( | |
| 363 UMA_HISTOGRAM_LONG_TIMES, | |
| 364 "Startup.BrowserMessageLoopStartTimeFromMainEntry.FirstRun", | |
| 365 dll_main_time, time); | |
| 366 } else { | |
| 367 UMA_HISTOGRAM_AND_TRACE_WITH_STARTUP_TEMPERATURE( | |
| 368 UMA_HISTOGRAM_LONG_TIMES, | |
| 369 "Startup.BrowserMessageLoopStartTimeFromMainEntry", dll_main_time, | |
| 370 time); | |
| 371 } | |
| 372 | |
| 373 // Record timings between process creation, the main() in the executable being | |
| 374 // reached and the main() in the shared library being reached. | |
| 375 if (!process_creation_time.is_null()) { | |
| 376 const base::Time exe_main_time = ExeMainEntryPointTime(); | |
| 377 if (!exe_main_time.is_null()) { | |
| 378 // Process create to chrome.exe:main(). | |
| 379 UMA_HISTOGRAM_AND_TRACE_WITH_STARTUP_TEMPERATURE( | |
| 380 UMA_HISTOGRAM_LONG_TIMES, "Startup.LoadTime.ProcessCreateToExeMain", | |
| 381 process_creation_time, exe_main_time); | |
| 382 | |
| 383 // chrome.exe:main() to chrome.dll:main(). | |
| 384 UMA_HISTOGRAM_AND_TRACE_WITH_STARTUP_TEMPERATURE( | |
| 385 UMA_HISTOGRAM_LONG_TIMES, "Startup.LoadTime.ExeMainToDllMain", | |
| 386 exe_main_time, dll_main_time); | |
| 387 | |
| 388 // Process create to chrome.dll:main(). Reported as a histogram only as | |
| 389 // the other two events above are sufficient for tracing purposes. | |
| 390 UMA_HISTOGRAM_WITH_STARTUP_TEMPERATURE( | |
| 391 UMA_HISTOGRAM_LONG_TIMES, "Startup.LoadTime.ProcessCreateToDllMain", | |
| 392 dll_main_time - process_creation_time); | |
| 393 } | |
| 394 } | |
| 395 } | |
| 396 | |
| 397 void RecordBrowserWindowDisplay(const base::Time& time) { | |
| 398 static bool is_first_call = true; | |
| 399 if (!is_first_call || time.is_null()) | |
| 400 return; | |
| 401 is_first_call = false; | |
| 402 if (WasNonBrowserUIDisplayed() || g_process_creation_time.Get().is_null()) | |
| 403 return; | |
| 404 | |
| 405 UMA_HISTOGRAM_AND_TRACE_WITH_STARTUP_TEMPERATURE( | |
| 406 UMA_HISTOGRAM_LONG_TIMES, "Startup.BrowserWindowDisplay", | |
| 407 g_process_creation_time.Get(), time); | |
| 408 } | |
| 409 | |
| 410 void RecordBrowserOpenTabsDelta(const base::TimeDelta& delta) { | |
| 411 static bool is_first_call = true; | |
| 412 if (!is_first_call) | |
| 413 return; | |
| 414 is_first_call = false; | |
| 415 | |
| 416 UMA_HISTOGRAM_WITH_STARTUP_TEMPERATURE(UMA_HISTOGRAM_LONG_TIMES_100, | |
| 417 "Startup.BrowserOpenTabs", delta); | |
| 418 } | |
| 419 | |
| 420 void RecordFirstWebContentsMainFrameLoad(const base::Time& time) { | |
| 421 static bool is_first_call = true; | |
| 422 if (!is_first_call || time.is_null()) | |
| 423 return; | |
| 424 is_first_call = false; | |
| 425 if (WasNonBrowserUIDisplayed() || g_process_creation_time.Get().is_null()) | |
| 426 return; | |
| 427 | |
| 428 UMA_HISTOGRAM_AND_TRACE_WITH_STARTUP_TEMPERATURE( | |
| 429 UMA_HISTOGRAM_LONG_TIMES_100, "Startup.FirstWebContents.MainFrameLoad2", | |
| 430 g_process_creation_time.Get(), time); | |
| 431 } | |
| 432 | |
| 433 void RecordDeprecatedFirstWebContentsMainFrameLoad(const base::Time& time) { | |
| 434 static bool is_first_call = true; | |
| 435 if (!is_first_call || time.is_null()) | |
| 436 return; | |
| 437 is_first_call = false; | |
| 438 if (WasNonBrowserUIDisplayed() || g_process_creation_time.Get().is_null()) | |
| 439 return; | |
| 440 | |
| 441 UMA_HISTOGRAM_WITH_STARTUP_TEMPERATURE( | |
| 442 UMA_HISTOGRAM_LONG_TIMES_100, "Startup.FirstWebContents.MainFrameLoad", | |
| 443 time - g_process_creation_time.Get()); | |
| 444 } | |
| 445 | |
| 446 void RecordFirstWebContentsNonEmptyPaint(const base::Time& time) { | |
| 447 static bool is_first_call = true; | |
| 448 if (!is_first_call || time.is_null()) | |
| 449 return; | |
| 450 is_first_call = false; | |
| 451 if (WasNonBrowserUIDisplayed() || g_process_creation_time.Get().is_null()) | |
| 452 return; | |
| 453 | |
| 454 UMA_HISTOGRAM_AND_TRACE_WITH_STARTUP_TEMPERATURE( | |
| 455 UMA_HISTOGRAM_LONG_TIMES_100, "Startup.FirstWebContents.NonEmptyPaint2", | |
| 456 g_process_creation_time.Get(), time); | |
| 457 } | |
| 458 | |
| 459 void RecordDeprecatedFirstWebContentsNonEmptyPaint(const base::Time& time) { | |
| 460 static bool is_first_call = true; | |
| 461 if (!is_first_call || time.is_null()) | |
| 462 return; | |
| 463 is_first_call = false; | |
| 464 if (WasNonBrowserUIDisplayed() || g_process_creation_time.Get().is_null()) | |
| 465 return; | |
| 466 | |
| 467 UMA_HISTOGRAM_WITH_STARTUP_TEMPERATURE( | |
| 468 UMA_HISTOGRAM_LONG_TIMES_100, "Startup.FirstWebContents.NonEmptyPaint", | |
| 469 time - g_process_creation_time.Get()); | |
| 470 } | |
| 471 | |
| 472 void RecordFirstWebContentsMainNavigationStart(const base::Time& time) { | |
| 473 static bool is_first_call = true; | |
| 474 if (!is_first_call || time.is_null()) | |
| 475 return; | |
| 476 is_first_call = false; | |
| 477 if (WasNonBrowserUIDisplayed() || g_process_creation_time.Get().is_null()) | |
| 478 return; | |
| 479 | |
| 480 UMA_HISTOGRAM_AND_TRACE_WITH_STARTUP_TEMPERATURE( | |
| 481 UMA_HISTOGRAM_LONG_TIMES_100, | |
| 482 "Startup.FirstWebContents.MainNavigationStart", | |
| 483 g_process_creation_time.Get(), time); | |
| 484 } | |
| 485 | |
| 486 void RecordFirstWebContentsMainNavigationFinished(const base::Time& time) { | |
| 487 static bool is_first_call = true; | |
| 488 if (!is_first_call || time.is_null()) | |
| 489 return; | |
| 490 is_first_call = false; | |
| 491 if (WasNonBrowserUIDisplayed() || g_process_creation_time.Get().is_null()) | |
| 492 return; | |
| 493 | |
| 494 UMA_HISTOGRAM_AND_TRACE_WITH_STARTUP_TEMPERATURE( | |
| 495 UMA_HISTOGRAM_LONG_TIMES_100, | |
| 496 "Startup.FirstWebContents.MainNavigationFinished", | |
| 497 g_process_creation_time.Get(), time); | |
| 498 } | |
| 499 | |
| 500 base::Time MainEntryPointTime() { | |
| 501 return g_main_entry_point_time.Get(); | |
| 502 } | |
| 503 | |
| 504 StartupTemperature GetStartupTemperature() { | |
| 505 return g_startup_temperature; | |
| 506 } | |
| 507 | |
| 508 } // namespace startup_metric_utils | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1413153010:
Move components/startup_metric_utils/* to components/startup_metric_utils/browser/*. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master