| 878ddf1f |
1 | /*++\r |
| 2 | \r |
| 3 | Copyright (c) 2006, Intel Corporation \r |
| 4 | All rights reserved. This program and the accompanying materials \r |
| 5 | are licensed and made available under the terms and conditions of the BSD License \r |
| 6 | which accompanies this distribution. The full text of the license may be found at \r |
| 7 | http://opensource.org/licenses/bsd-license.php \r |
| 8 | \r |
| 9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r |
| 10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r |
| 11 | \r |
| 12 | Module Name:\r |
| 13 | \r |
| 14 | DxeCorePerformance.c\r |
| 15 | \r |
| 16 | Abstract:\r |
| 17 | \r |
| 18 | Support for measurement of DXE performance \r |
| 19 | \r |
| 20 | --*/\r |
| 21 | \r |
| 22 | //\r |
| 23 | // Interface declarations for Performance Protocol.\r |
| 24 | //\r |
| 25 | /**\r |
| 26 | Adds a record at the end of the performance measurement log\r |
| 27 | that records the start time of a performance measurement.\r |
| 28 | \r |
| 29 | Adds a record to the end of the performance measurement log\r |
| 30 | that contains the Handle, Token, and Module.\r |
| 31 | The end time of the new record must be set to zero.\r |
| 32 | If TimeStamp is not zero, then TimeStamp is used to fill in the start time in the record.\r |
| 33 | If TimeStamp is zero, the start time in the record is filled in with the value\r |
| 34 | read from the current time stamp. \r |
| 35 | \r |
| 36 | @param Handle Pointer to environment specific context used\r |
| 37 | to identify the component being measured.\r |
| 38 | @param Token Pointer to a Null-terminated ASCII string\r |
| 39 | that identifies the component being measured.\r |
| 40 | @param Module Pointer to a Null-terminated ASCII string\r |
| 41 | that identifies the module being measured.\r |
| 42 | @param TimeStamp 64-bit time stamp.\r |
| 43 | \r |
| 44 | @retval EFI_SUCCESS The data was read correctly from the device.\r |
| 45 | @retval EFI_OUT_OF_RESOURCES There are not enough resources to record the measurement.\r |
| 46 | \r |
| 47 | **/\r |
| 48 | EFI_STATUS\r |
| 49 | EFIAPI\r |
| 50 | StartGauge (\r |
| 51 | IN CONST VOID *Handle, OPTIONAL\r |
| 52 | IN CONST CHAR8 *Token, OPTIONAL\r |
| 53 | IN CONST CHAR8 *Module, OPTIONAL\r |
| 54 | IN UINT64 TimeStamp\r |
| 55 | );\r |
| 56 | \r |
| 57 | /**\r |
| 58 | Searches the performance measurement log from the beginning of the log\r |
| 59 | for the first matching record that contains a zero end time and fills in a valid end time. \r |
| 60 | \r |
| 61 | Searches the performance measurement log from the beginning of the log\r |
| 62 | for the first record that matches Handle, Token, and Module and has an end time value of zero.\r |
| 63 | If the record can not be found then return EFI_NOT_FOUND.\r |
| 64 | If the record is found and TimeStamp is not zero,\r |
| 65 | then the end time in the record is filled in with the value specified by TimeStamp.\r |
| 66 | If the record is found and TimeStamp is zero, then the end time in the matching record\r |
| 67 | is filled in with the current time stamp value.\r |
| 68 | \r |
| 69 | @param Handle Pointer to environment specific context used\r |
| 70 | to identify the component being measured.\r |
| 71 | @param Token Pointer to a Null-terminated ASCII string\r |
| 72 | that identifies the component being measured.\r |
| 73 | @param Module Pointer to a Null-terminated ASCII string\r |
| 74 | that identifies the module being measured.\r |
| 75 | @param TimeStamp 64-bit time stamp.\r |
| 76 | \r |
| 77 | @retval EFI_SUCCESS The end of the measurement was recorded.\r |
| 78 | @retval EFI_NOT_FOUND The specified measurement record could not be found.\r |
| 79 | \r |
| 80 | **/\r |
| 81 | EFI_STATUS\r |
| 82 | EFIAPI\r |
| 83 | EndGauge (\r |
| 84 | IN CONST VOID *Handle, OPTIONAL\r |
| 85 | IN CONST CHAR8 *Token, OPTIONAL\r |
| 86 | IN CONST CHAR8 *Module, OPTIONAL\r |
| 87 | IN UINT64 TimeStamp\r |
| 88 | );\r |
| 89 | \r |
| 90 | /**\r |
| 91 | Retrieves a previously logged performance measurement. \r |
| 92 | \r |
| 93 | Retrieves the performance log entry from the performance log specified by LogEntryKey.\r |
| 94 | If it stands for a valid entry, then EFI_SUCCESS is returned and\r |
| 95 | GaugeDataEntry stores the pointer to that entry.\r |
| 96 | \r |
| 97 | @param LogEntryKey The key for the previous performance measurement log entry.\r |
| 98 | If 0, then the first performance measurement log entry is retrieved.\r |
| 99 | @param GaugeDataEntry The indirect pointer to the gauge data entry specified by LogEntryKey\r |
| 100 | if the retrieval is successful.\r |
| 101 | \r |
| 102 | @retval EFI_SUCCESS The GuageDataEntry is successfuly found based on LogEntryKey.\r |
| 103 | @retval EFI_NOT_FOUND The LogEntryKey is the last entry (equals to the total entry number).\r |
| 104 | @retval EFI_INVALIDE_PARAMETER The LogEntryKey is not a valid entry (greater than the total entry number).\r |
| 105 | @retval EFI_INVALIDE_PARAMETER GaugeDataEntry is NULL. \r |
| 106 | \r |
| 107 | **/\r |
| 108 | EFI_STATUS\r |
| 109 | EFIAPI\r |
| 110 | GetGauge (\r |
| 111 | IN UINTN LogEntryKey,\r |
| 112 | OUT GAUGE_DATA_ENTRY **GaugeDataEntry\r |
| 113 | );\r |
| 114 | \r |
| 115 | //\r |
| 116 | // Definition for global variables.\r |
| 117 | //\r |
| 118 | STATIC GAUGE_DATA_HEADER *mGaugeData;\r |
| 119 | STATIC UINT32 mMaxGaugeRecords;\r |
| 120 | \r |
| bc724e58 |
121 | EFI_HANDLE mHandle = NULL;\r |
| 122 | PERFORMANCE_PROTOCOL mPerformanceInterface = {\r |
| 878ddf1f |
123 | StartGauge,\r |
| 124 | EndGauge,\r |
| 125 | GetGauge\r |
| 126 | };\r |
| 127 | \r |
| 128 | \r |
| 129 | /**\r |
| 130 | Searches in the gauge array with keyword Handle, Token and Module.\r |
| 131 | \r |
| 132 | This internal function searches for the gauge entry in the gauge array.\r |
| 133 | If there is an entry that exactly matches the given key word triple\r |
| 134 | and its end time stamp is zero, then the index of that gauge entry is returned;\r |
| 135 | otherwise, the the number of gauge entries in the array is returned. \r |
| 136 | \r |
| 137 | @param Handle Pointer to environment specific context used\r |
| 138 | to identify the component being measured.\r |
| 139 | @param Token Pointer to a Null-terminated ASCII string\r |
| 140 | that identifies the component being measured.\r |
| 141 | @param Module Pointer to a Null-terminated ASCII string\r |
| 142 | that identifies the module being measured.\r |
| 143 | \r |
| 144 | @retval The index of gauge entry in the array.\r |
| 145 | \r |
| 146 | **/\r |
| 147 | UINT32\r |
| 148 | InternalSearchForGaugeEntry (\r |
| 149 | IN CONST VOID *Handle, OPTIONAL\r |
| 150 | IN CONST CHAR8 *Token, OPTIONAL\r |
| 151 | IN CONST CHAR8 *Module OPTIONAL\r |
| 152 | )\r |
| 153 | {\r |
| 154 | UINT32 Index;\r |
| 155 | UINT32 NumberOfEntries;\r |
| 156 | GAUGE_DATA_ENTRY *GaugeEntryArray;\r |
| 157 | \r |
| 158 | if (Token == NULL) {\r |
| 159 | Token = "";\r |
| 160 | }\r |
| 161 | if (Module == NULL) {\r |
| 162 | Module = "";\r |
| 163 | }\r |
| 164 | \r |
| 165 | NumberOfEntries = mGaugeData->NumberOfEntries;\r |
| 166 | GaugeEntryArray = (GAUGE_DATA_ENTRY *) (mGaugeData + 1);\r |
| 167 | \r |
| 168 | for (Index = 0; Index < NumberOfEntries; Index++) {\r |
| 169 | if ((GaugeEntryArray[Index].Handle == (EFI_PHYSICAL_ADDRESS) (UINTN) Handle) &&\r |
| 170 | AsciiStrnCmp (GaugeEntryArray[Index].Token, Token, PEI_PERFORMANCE_STRING_LENGTH) == 0 &&\r |
| 171 | AsciiStrnCmp (GaugeEntryArray[Index].Module, Module, PEI_PERFORMANCE_STRING_LENGTH) == 0 &&\r |
| 172 | GaugeEntryArray[Index].EndTimeStamp == 0\r |
| 173 | ) {\r |
| 174 | break;\r |
| 175 | }\r |
| 176 | }\r |
| 177 | \r |
| 178 | return Index;\r |
| 179 | }\r |
| 180 | \r |
| 181 | /**\r |
| 182 | Adds a record at the end of the performance measurement log\r |
| 183 | that records the start time of a performance measurement.\r |
| 184 | \r |
| 185 | Adds a record to the end of the performance measurement log\r |
| 186 | that contains the Handle, Token, and Module.\r |
| 187 | The end time of the new record must be set to zero.\r |
| 188 | If TimeStamp is not zero, then TimeStamp is used to fill in the start time in the record.\r |
| 189 | If TimeStamp is zero, the start time in the record is filled in with the value\r |
| 190 | read from the current time stamp. \r |
| 191 | \r |
| 192 | @param Handle Pointer to environment specific context used\r |
| 193 | to identify the component being measured.\r |
| 194 | @param Token Pointer to a Null-terminated ASCII string\r |
| 195 | that identifies the component being measured.\r |
| 196 | @param Module Pointer to a Null-terminated ASCII string\r |
| 197 | that identifies the module being measured.\r |
| 198 | @param TimeStamp 64-bit time stamp.\r |
| 199 | \r |
| 200 | @retval EFI_SUCCESS The data was read correctly from the device.\r |
| 201 | @retval EFI_OUT_OF_RESOURCES There are not enough resources to record the measurement.\r |
| 202 | \r |
| 203 | **/\r |
| 204 | EFI_STATUS\r |
| 205 | EFIAPI\r |
| 206 | StartGauge (\r |
| 207 | IN CONST VOID *Handle, OPTIONAL\r |
| 208 | IN CONST CHAR8 *Token, OPTIONAL\r |
| 209 | IN CONST CHAR8 *Module, OPTIONAL\r |
| 210 | IN UINT64 TimeStamp\r |
| 211 | )\r |
| 212 | {\r |
| 213 | GAUGE_DATA_ENTRY *GaugeEntryArray;\r |
| 214 | UINTN GaugeDataSize;\r |
| 215 | UINTN OldGaugeDataSize;\r |
| 216 | GAUGE_DATA_HEADER *OldGaugeData;\r |
| 878ddf1f |
217 | UINT32 Index;\r |
| 218 | \r |
| 219 | Index = mGaugeData->NumberOfEntries;\r |
| 220 | if (Index >= mMaxGaugeRecords) {\r |
| 221 | //\r |
| 222 | // Try to enlarge the scale of gauge arrary.\r |
| 223 | //\r |
| 224 | OldGaugeData = mGaugeData;\r |
| 225 | OldGaugeDataSize = sizeof (GAUGE_DATA_HEADER) + sizeof (GAUGE_DATA_ENTRY) * mMaxGaugeRecords;\r |
| bc724e58 |
226 | \r |
| 878ddf1f |
227 | mMaxGaugeRecords *= 2;\r |
| 228 | GaugeDataSize = sizeof (GAUGE_DATA_HEADER) + sizeof (GAUGE_DATA_ENTRY) * mMaxGaugeRecords;\r |
| bc724e58 |
229 | \r |
| 230 | mGaugeData = AllocateZeroPool (GaugeDataSize);\r |
| 231 | if (mGaugeData == NULL) {\r |
| 5b1b9d8b |
232 | return EFI_OUT_OF_RESOURCES;\r |
| 878ddf1f |
233 | }\r |
| 234 | //\r |
| 235 | // Initialize new data arry and migrate old data one. \r |
| 236 | //\r |
| bc724e58 |
237 | mGaugeData = CopyMem (mGaugeData, OldGaugeData, OldGaugeDataSize);\r |
| 878ddf1f |
238 | \r |
| 239 | gBS->FreePool (OldGaugeData); \r |
| 240 | }\r |
| 241 | \r |
| 242 | GaugeEntryArray = (GAUGE_DATA_ENTRY *) (mGaugeData + 1);\r |
| 243 | GaugeEntryArray[Index].Handle = (EFI_PHYSICAL_ADDRESS) (UINTN) Handle;\r |
| 244 | \r |
| 245 | if (Token != NULL) {\r |
| 246 | AsciiStrnCpy (GaugeEntryArray[Index].Token, Token, DXE_PERFORMANCE_STRING_LENGTH);\r |
| 247 | }\r |
| 248 | if (Module != NULL) {\r |
| 249 | AsciiStrnCpy (GaugeEntryArray[Index].Module, Module, DXE_PERFORMANCE_STRING_LENGTH);\r |
| 250 | }\r |
| 251 | \r |
| 252 | if (TimeStamp == 0) {\r |
| 253 | TimeStamp = GetPerformanceCounter ();\r |
| 254 | }\r |
| 255 | GaugeEntryArray[Index].StartTimeStamp = TimeStamp;\r |
| 256 | \r |
| 257 | mGaugeData->NumberOfEntries++;\r |
| 258 | \r |
| 259 | return EFI_SUCCESS;\r |
| 260 | }\r |
| 261 | \r |
| 262 | /**\r |
| 263 | Searches the performance measurement log from the beginning of the log\r |
| 264 | for the first matching record that contains a zero end time and fills in a valid end time. \r |
| 265 | \r |
| 266 | Searches the performance measurement log from the beginning of the log\r |
| 267 | for the first record that matches Handle, Token, and Module and has an end time value of zero.\r |
| 268 | If the record can not be found then return EFI_NOT_FOUND.\r |
| 269 | If the record is found and TimeStamp is not zero,\r |
| 270 | then the end time in the record is filled in with the value specified by TimeStamp.\r |
| 271 | If the record is found and TimeStamp is zero, then the end time in the matching record\r |
| 272 | is filled in with the current time stamp value.\r |
| 273 | \r |
| 274 | @param Handle Pointer to environment specific context used\r |
| 275 | to identify the component being measured.\r |
| 276 | @param Token Pointer to a Null-terminated ASCII string\r |
| 277 | that identifies the component being measured.\r |
| 278 | @param Module Pointer to a Null-terminated ASCII string\r |
| 279 | that identifies the module being measured.\r |
| 280 | @param TimeStamp 64-bit time stamp.\r |
| 281 | \r |
| 282 | @retval EFI_SUCCESS The end of the measurement was recorded.\r |
| 283 | @retval EFI_NOT_FOUND The specified measurement record could not be found.\r |
| 284 | \r |
| 285 | **/\r |
| 286 | EFI_STATUS\r |
| 287 | EFIAPI\r |
| 288 | EndGauge (\r |
| 289 | IN CONST VOID *Handle, OPTIONAL\r |
| 290 | IN CONST CHAR8 *Token, OPTIONAL\r |
| 291 | IN CONST CHAR8 *Module, OPTIONAL\r |
| 292 | IN UINT64 TimeStamp\r |
| 293 | )\r |
| 294 | {\r |
| 295 | GAUGE_DATA_ENTRY *GaugeEntryArray;\r |
| 296 | UINT32 Index;\r |
| 297 | \r |
| 298 | if (TimeStamp == 0) {\r |
| 299 | TimeStamp = GetPerformanceCounter ();\r |
| 300 | }\r |
| 301 | \r |
| 302 | Index = InternalSearchForGaugeEntry (Handle, Token, Module);\r |
| 303 | if (Index >= mGaugeData->NumberOfEntries) {\r |
| 304 | return EFI_NOT_FOUND;\r |
| 305 | }\r |
| 306 | GaugeEntryArray = (GAUGE_DATA_ENTRY *) (mGaugeData + 1);\r |
| 307 | GaugeEntryArray[Index].EndTimeStamp = TimeStamp;\r |
| 308 | \r |
| 309 | return EFI_SUCCESS;\r |
| 310 | }\r |
| 311 | \r |
| 312 | /**\r |
| 313 | Retrieves a previously logged performance measurement. \r |
| 314 | \r |
| 315 | Retrieves the performance log entry from the performance log specified by LogEntryKey.\r |
| 316 | If it stands for a valid entry, then EFI_SUCCESS is returned and\r |
| 317 | GaugeDataEntry stores the pointer to that entry.\r |
| 318 | \r |
| 319 | @param LogEntryKey The key for the previous performance measurement log entry.\r |
| 320 | If 0, then the first performance measurement log entry is retrieved.\r |
| 321 | @param GaugeDataEntry The indirect pointer to the gauge data entry specified by LogEntryKey\r |
| 322 | if the retrieval is successful.\r |
| 323 | \r |
| 324 | @retval EFI_SUCCESS The GuageDataEntry is successfuly found based on LogEntryKey.\r |
| 325 | @retval EFI_NOT_FOUND The LogEntryKey is the last entry (equals to the total entry number).\r |
| 326 | @retval EFI_INVALIDE_PARAMETER The LogEntryKey is not a valid entry (greater than the total entry number).\r |
| 327 | @retval EFI_INVALIDE_PARAMETER GaugeDataEntry is NULL. \r |
| 328 | \r |
| 329 | **/\r |
| 330 | EFI_STATUS\r |
| 331 | EFIAPI\r |
| 332 | GetGauge (\r |
| 333 | IN UINTN LogEntryKey,\r |
| 334 | OUT GAUGE_DATA_ENTRY **GaugeDataEntry\r |
| 335 | )\r |
| 336 | {\r |
| 337 | UINTN NumberOfEntries;\r |
| 338 | GAUGE_DATA_ENTRY *LogEntryArray;\r |
| 339 | \r |
| 340 | NumberOfEntries = (UINTN) (mGaugeData->NumberOfEntries);\r |
| 341 | if (LogEntryKey > NumberOfEntries) {\r |
| 342 | return EFI_INVALID_PARAMETER;\r |
| 343 | }\r |
| 344 | if (LogEntryKey == NumberOfEntries) {\r |
| 345 | return EFI_NOT_FOUND;\r |
| 346 | }\r |
| 347 | \r |
| 348 | LogEntryArray = (GAUGE_DATA_ENTRY *) (mGaugeData + 1);\r |
| 349 | \r |
| 350 | if (GaugeDataEntry == NULL) {\r |
| 351 | return EFI_INVALID_PARAMETER;\r |
| 352 | }\r |
| 353 | *GaugeDataEntry = &LogEntryArray[LogEntryKey];\r |
| 354 | \r |
| 355 | return EFI_SUCCESS;\r |
| 356 | }\r |
| 357 | \r |
| 358 | /**\r |
| 359 | Dumps all the PEI performance log to DXE performance gauge array.\r |
| 360 | \r |
| 361 | This internal function dumps all the PEI performance log to the DXE performance gauge array.\r |
| 362 | It retrieves the optional GUID HOB for PEI performance and then saves the performance data\r |
| 363 | to DXE performance data structures.\r |
| 364 | \r |
| 365 | **/\r |
| 366 | VOID\r |
| 367 | InternalGetPeiPerformance (\r |
| 368 | VOID\r |
| 369 | )\r |
| 370 | {\r |
| 371 | EFI_HOB_GUID_TYPE *GuidHob;\r |
| 372 | PEI_PERFORMANCE_LOG_HEADER *LogHob;\r |
| 373 | PEI_PERFORMANCE_LOG_ENTRY *LogEntryArray;\r |
| 374 | GAUGE_DATA_ENTRY *GaugeEntryArray;\r |
| 375 | UINT32 Index;\r |
| 376 | UINT32 NumberOfEntries;\r |
| 377 | \r |
| 378 | NumberOfEntries = 0;\r |
| 379 | GaugeEntryArray = (GAUGE_DATA_ENTRY *) (mGaugeData + 1);\r |
| 380 | \r |
| 381 | //\r |
| 382 | // Dump PEI Log Entries to DXE Guage Data structure. \r |
| 383 | //\r |
| 384 | GuidHob = GetFirstGuidHob (&gPeiPerformanceHobGuid);\r |
| 385 | if (GuidHob != NULL) {\r |
| 386 | LogHob = GET_GUID_HOB_DATA (GuidHob);\r |
| 387 | LogEntryArray = (PEI_PERFORMANCE_LOG_ENTRY *) (LogHob + 1);\r |
| 388 | GaugeEntryArray = (GAUGE_DATA_ENTRY *) (mGaugeData + 1);\r |
| 389 | \r |
| 390 | NumberOfEntries = LogHob->NumberOfEntries;\r |
| 391 | for (Index = 0; Index < NumberOfEntries; Index++) {\r |
| 392 | GaugeEntryArray[Index].Handle = LogEntryArray[Index].Handle;\r |
| 393 | AsciiStrnCpy (GaugeEntryArray[Index].Token, LogEntryArray[Index].Token, DXE_PERFORMANCE_STRING_LENGTH);\r |
| 394 | AsciiStrnCpy (GaugeEntryArray[Index].Module, LogEntryArray[Index].Module, DXE_PERFORMANCE_STRING_LENGTH);\r |
| 395 | GaugeEntryArray[Index].StartTimeStamp = LogEntryArray[Index].StartTimeStamp;\r |
| 396 | GaugeEntryArray[Index].EndTimeStamp = LogEntryArray[Index].EndTimeStamp;\r |
| 397 | }\r |
| 398 | }\r |
| 399 | mGaugeData->NumberOfEntries = NumberOfEntries;\r |
| 400 | }\r |
| 401 | \r |
| 402 | /**\r |
| 403 | The constructor function initializes Performance infrastructure for DXE phase.\r |
| 404 | \r |
| 405 | The constructor function publishes Performance protocol, allocates memory to log DXE performance\r |
| 406 | and merges PEI performance data to DXE performance log.\r |
| 407 | It will ASSERT() if one of these operations fails and it will always return EFI_SUCCESS. \r |
| 408 | \r |
| 409 | @param ImageHandle The firmware allocated handle for the EFI image.\r |
| 410 | @param SystemTable A pointer to the EFI System Table.\r |
| 411 | \r |
| 412 | @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.\r |
| 413 | \r |
| 414 | **/\r |
| 415 | EFI_STATUS\r |
| 416 | EFIAPI\r |
| 417 | DxeCorePerformanceLibConstructor (\r |
| 418 | IN EFI_HANDLE ImageHandle,\r |
| 419 | IN EFI_SYSTEM_TABLE *SystemTable\r |
| 420 | )\r |
| 421 | {\r |
| 422 | EFI_STATUS Status;\r |
| 878ddf1f |
423 | \r |
| 424 | //\r |
| 425 | // Install the protocol interfaces.\r |
| 426 | //\r |
| 878ddf1f |
427 | Status = gBS->InstallProtocolInterface (\r |
| bc724e58 |
428 | &mHandle,\r |
| 878ddf1f |
429 | &gPerformanceProtocolGuid,\r |
| 430 | EFI_NATIVE_INTERFACE,\r |
| bc724e58 |
431 | &mPerformanceInterface\r |
| 878ddf1f |
432 | );\r |
| 433 | ASSERT_EFI_ERROR (Status);\r |
| 434 | \r |
| 435 | mMaxGaugeRecords = INIT_DXE_GAUGE_DATA_ENTRIES + MAX_PEI_PERFORMANCE_LOG_ENTRIES;\r |
| 878ddf1f |
436 | \r |
| bc724e58 |
437 | mGaugeData = AllocateZeroPool (sizeof (GAUGE_DATA_HEADER) + (sizeof (GAUGE_DATA_ENTRY) * mMaxGaugeRecords));\r |
| 438 | ASSERT (mGaugeData != NULL);\r |
| 878ddf1f |
439 | \r |
| 440 | InternalGetPeiPerformance ();\r |
| 441 | \r |
| 442 | return Status;\r |
| 443 | }\r |
| 444 | \r |
| 445 | /**\r |
| 446 | Adds a record at the end of the performance measurement log\r |
| 447 | that records the start time of a performance measurement.\r |
| 448 | \r |
| 449 | Adds a record to the end of the performance measurement log\r |
| 450 | that contains the Handle, Token, and Module.\r |
| 451 | The end time of the new record must be set to zero.\r |
| 452 | If TimeStamp is not zero, then TimeStamp is used to fill in the start time in the record.\r |
| 453 | If TimeStamp is zero, the start time in the record is filled in with the value\r |
| 454 | read from the current time stamp. \r |
| 455 | \r |
| 456 | @param Handle Pointer to environment specific context used\r |
| 457 | to identify the component being measured.\r |
| 458 | @param Token Pointer to a Null-terminated ASCII string\r |
| 459 | that identifies the component being measured.\r |
| 460 | @param Module Pointer to a Null-terminated ASCII string\r |
| 461 | that identifies the module being measured.\r |
| 462 | @param TimeStamp 64-bit time stamp.\r |
| 463 | \r |
| 464 | @retval RETURN_SUCCESS The start of the measurement was recorded.\r |
| 465 | @retval RETURN_OUT_OF_RESOURCES There are not enough resources to record the measurement.\r |
| 466 | \r |
| 467 | **/\r |
| 468 | RETURN_STATUS\r |
| 469 | EFIAPI\r |
| 470 | StartPerformanceMeasurement (\r |
| 471 | IN CONST VOID *Handle, OPTIONAL\r |
| 472 | IN CONST CHAR8 *Token, OPTIONAL\r |
| 473 | IN CONST CHAR8 *Module, OPTIONAL\r |
| 474 | IN UINT64 TimeStamp\r |
| 475 | )\r |
| 476 | {\r |
| 477 | EFI_STATUS Status;\r |
| 478 | \r |
| 479 | Status = StartGauge (Handle, Token, Module, TimeStamp);\r |
| 480 | return (RETURN_STATUS) Status;\r |
| 481 | }\r |
| 482 | \r |
| 483 | /**\r |
| 484 | Searches the performance measurement log from the beginning of the log\r |
| 485 | for the first matching record that contains a zero end time and fills in a valid end time. \r |
| 486 | \r |
| 487 | Searches the performance measurement log from the beginning of the log\r |
| 488 | for the first record that matches Handle, Token, and Module and has an end time value of zero.\r |
| 489 | If the record can not be found then return RETURN_NOT_FOUND.\r |
| 490 | If the record is found and TimeStamp is not zero,\r |
| 491 | then the end time in the record is filled in with the value specified by TimeStamp.\r |
| 492 | If the record is found and TimeStamp is zero, then the end time in the matching record\r |
| 493 | is filled in with the current time stamp value.\r |
| 494 | \r |
| 495 | @param Handle Pointer to environment specific context used\r |
| 496 | to identify the component being measured.\r |
| 497 | @param Token Pointer to a Null-terminated ASCII string\r |
| 498 | that identifies the component being measured.\r |
| 499 | @param Module Pointer to a Null-terminated ASCII string\r |
| 500 | that identifies the module being measured.\r |
| 501 | @param TimeStamp 64-bit time stamp.\r |
| 502 | \r |
| 503 | @retval RETURN_SUCCESS The end of the measurement was recorded.\r |
| 504 | @retval RETURN_NOT_FOUND The specified measurement record could not be found.\r |
| 505 | \r |
| 506 | **/\r |
| 507 | RETURN_STATUS\r |
| 508 | EFIAPI\r |
| 509 | EndPerformanceMeasurement (\r |
| 510 | IN CONST VOID *Handle, OPTIONAL\r |
| 511 | IN CONST CHAR8 *Token, OPTIONAL\r |
| 512 | IN CONST CHAR8 *Module, OPTIONAL\r |
| 513 | IN UINT64 TimeStamp\r |
| 514 | )\r |
| 515 | {\r |
| 516 | EFI_STATUS Status;\r |
| 517 | \r |
| 518 | Status = EndGauge (Handle, Token, Module, TimeStamp);\r |
| 519 | return (RETURN_STATUS) Status;\r |
| 520 | }\r |
| 521 | \r |
| 522 | /**\r |
| 4ba61e5e |
523 | Attempts to retrieve a performance measurement log entry from the performance measurement log. \r |
| 878ddf1f |
524 | \r |
| 4ba61e5e |
525 | Attempts to retrieve the performance log entry specified by LogEntryKey. If LogEntryKey is\r |
| 526 | zero on entry, then an attempt is made to retrieve the first entry from the performance log,\r |
| 527 | and the key for the second entry in the log is returned. If the performance log is empty,\r |
| 528 | then no entry is retrieved and zero is returned. If LogEntryKey is not zero, then the performance\r |
| 529 | log entry associated with LogEntryKey is retrieved, and the key for the next entry in the log is\r |
| 530 | returned. If LogEntryKey is the key for the last entry in the log, then the last log entry is\r |
| 531 | retrieved and an implementation specific non-zero key value that specifies the end of the performance\r |
| 532 | log is returned. If LogEntryKey is equal this implementation specific non-zero key value, then no entry\r |
| 533 | is retrieved and zero is returned. In the cases where a performance log entry can be returned,\r |
| 534 | the log entry is returned in Handle, Token, Module, StartTimeStamp, and EndTimeStamp.\r |
| 535 | If LogEntryKey is not a valid log entry key for the performance measurement log, then ASSERT().\r |
| 536 | If Handle is NULL, then ASSERT().\r |
| 537 | If Token is NULL, then ASSERT().\r |
| 538 | If Module is NULL, then ASSERT().\r |
| 539 | If StartTimeStamp is NULL, then ASSERT().\r |
| 540 | If EndTimeStamp is NULL, then ASSERT().\r |
| 541 | \r |
| 542 | @param LogEntryKey On entry, the key of the performance measurement log entry to retrieve.\r |
| 543 | 0, then the first performance measurement log entry is retrieved.\r |
| 544 | On exit, the key of the next performance lof entry entry.\r |
| 545 | @param Handle Pointer to environment specific context used to identify the component\r |
| 546 | being measured. \r |
| 547 | @param Token Pointer to a Null-terminated ASCII string that identifies the component\r |
| 548 | being measured. \r |
| 549 | @param Module Pointer to a Null-terminated ASCII string that identifies the module\r |
| 550 | being measured.\r |
| 551 | @param StartTimeStamp Pointer to the 64-bit time stamp that was recorded when the measurement\r |
| 552 | was started.\r |
| 553 | @param EndTimeStamp Pointer to the 64-bit time stamp that was recorded when the measurement\r |
| 554 | was ended.\r |
| 555 | \r |
| 556 | @return The key for the next performance log entry (in general case).\r |
| 878ddf1f |
557 | \r |
| 558 | **/\r |
| 559 | UINTN\r |
| 560 | EFIAPI\r |
| 561 | GetPerformanceMeasurement (\r |
| 4ba61e5e |
562 | IN UINTN LogEntryKey, \r |
| 878ddf1f |
563 | OUT CONST VOID **Handle,\r |
| 564 | OUT CONST CHAR8 **Token,\r |
| 565 | OUT CONST CHAR8 **Module,\r |
| 566 | OUT UINT64 *StartTimeStamp,\r |
| 567 | OUT UINT64 *EndTimeStamp\r |
| 568 | )\r |
| 569 | {\r |
| 570 | EFI_STATUS Status;\r |
| 571 | GAUGE_DATA_ENTRY *GaugeData;\r |
| 572 | \r |
| 573 | ASSERT (Handle != NULL);\r |
| 574 | ASSERT (Token != NULL);\r |
| 575 | ASSERT (Module != NULL);\r |
| 576 | ASSERT (StartTimeStamp != NULL);\r |
| 577 | ASSERT (EndTimeStamp != NULL);\r |
| 578 | \r |
| 579 | Status = GetGauge (LogEntryKey++, &GaugeData);\r |
| 580 | \r |
| 581 | //\r |
| 582 | // Make sure that LogEntryKey is a valid log entry key,\r |
| 583 | //\r |
| 584 | ASSERT (Status != EFI_INVALID_PARAMETER);\r |
| 585 | \r |
| 586 | if (EFI_ERROR (Status)) {\r |
| 587 | //\r |
| 588 | // The LogEntryKey is the last entry (equals to the total entry number).\r |
| 589 | //\r |
| 590 | return 0;\r |
| 591 | }\r |
| 592 | \r |
| 593 | ASSERT (GaugeData != NULL);\r |
| 594 | \r |
| 595 | *Handle = (VOID *) (UINTN) GaugeData->Handle;\r |
| 596 | *Token = GaugeData->Token;\r |
| 597 | *Module = GaugeData->Module;\r |
| 598 | *StartTimeStamp = GaugeData->StartTimeStamp;\r |
| 599 | *EndTimeStamp = GaugeData->EndTimeStamp;\r |
| 600 | \r |
| 601 | return LogEntryKey; \r |
| 602 | }\r |
| 603 | \r |
| 604 | /**\r |
| 605 | Returns TRUE if the performance measurement macros are enabled. \r |
| 606 | \r |
| 607 | This function returns TRUE if the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r |
| 608 | PcdPerformanceLibraryPropertyMask is set. Otherwise FALSE is returned.\r |
| 609 | \r |
| 610 | @retval TRUE The PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r |
| 611 | PcdPerformanceLibraryPropertyMask is set.\r |
| 612 | @retval FALSE The PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r |
| 613 | PcdPerformanceLibraryPropertyMask is clear.\r |
| 614 | \r |
| 615 | **/\r |
| 616 | BOOLEAN\r |
| 617 | EFIAPI\r |
| 618 | PerformanceMeasurementEnabled (\r |
| 619 | VOID\r |
| 620 | )\r |
| 621 | {\r |
| 622 | return ((PcdGet8(PcdPerformanceLibraryPropertyMask) & PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED) != 0);\r |
| 623 | }\r |
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