| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | #include "perflib.h" |
| 4 | |
| 5 | #if defined(OS_WINDOWS) |
| 6 | // -------------------------------------------------------------------------------- |
| 7 | |
| 8 | // Retrieve a buffer that contains the specified performance data. |
| 9 | // The pwszSource parameter determines the data that GetRegistryBuffer returns. |
| 10 | // |
| 11 | // Typically, when calling RegQueryValueEx, you can specify zero for the size of the buffer |
| 12 | // and the RegQueryValueEx will set your size variable to the required buffer size. However, |
| 13 | // if the source is "Global" or one or more object index values, you will need to increment |
| 14 | // the buffer size in a loop until RegQueryValueEx does not return ERROR_MORE_DATA. |
| 15 | static LPBYTE getPerformanceData(const char *pwszSource) { |
| 16 | static __thread DWORD size = 0; |
| 17 | static __thread LPBYTE buffer = NULL; |
| 18 | |
| 19 | if(pwszSource == (const char *)0x01) { |
| 20 | freez(buffer); |
| 21 | buffer = NULL; |
| 22 | size = 0; |
| 23 | return NULL; |
| 24 | } |
| 25 | |
| 26 | if(!size) { |
| 27 | size = 32 * 1024; |
| 28 | buffer = mallocz(size); |
| 29 | } |
| 30 | |
| 31 | LONG status = ERROR_SUCCESS; |
| 32 | while ((status = RegQueryValueEx(HKEY_PERFORMANCE_DATA, pwszSource, |
| 33 | NULL, NULL, buffer, &size)) == ERROR_MORE_DATA) { |
| 34 | size *= 2; |
| 35 | buffer = reallocz(buffer, size); |
| 36 | } |
| 37 | |
| 38 | if (status != ERROR_SUCCESS) { |
| 39 | nd_log(NDLS_COLLECTORS, NDLP_ERR, "RegQueryValueEx failed with 0x%x.\n", status); |
| 40 | return NULL; |
| 41 | } |
| 42 | |
| 43 | return buffer; |
| 44 | } |
| 45 | |
| 46 | void perflibFreePerformanceData(void) { |
| 47 | getPerformanceData((const char *)0x01); |
| 48 | } |
| 49 | |
| 50 | // -------------------------------------------------------------------------------------------------------------------- |
| 51 | |
| 52 | // Retrieve the raw counter value and any supporting data needed to calculate |
| 53 | // a displayable counter value. Use the counter type to determine the information |
| 54 | // needed to calculate the value. |
| 55 | |
| 56 | static BOOL getCounterData( |
| 57 | PERF_DATA_BLOCK *pDataBlock, |
| 58 | PERF_OBJECT_TYPE* pObject, |
| 59 | PERF_COUNTER_DEFINITION* pCounter, |
| 60 | PERF_COUNTER_BLOCK* pCounterDataBlock, |
| 61 | PRAW_DATA pRawData) |
| 62 | { |
| 63 | PVOID pData = NULL; |
| 64 | UNALIGNED ULONGLONG* pullData = NULL; |
| 65 | PERF_COUNTER_DEFINITION* pBaseCounter = NULL; |
| 66 | BOOL fSuccess = TRUE; |
| 67 | |
| 68 | if(!pCounterDataBlock) |
| 69 | return FALSE; |
| 70 | |
| 71 | //Point to the raw counter data. |
| 72 | pData = (PVOID)((LPBYTE)pCounterDataBlock + pCounter->CounterOffset); |
| 73 | |
| 74 | //Now use the PERF_COUNTER_DEFINITION.CounterType value to figure out what |
| 75 | //other information you need to calculate a displayable value. |
| 76 | switch (pCounter->CounterType) { |
| 77 | |
| 78 | case PERF_COUNTER_COUNTER: |
| 79 | case PERF_COUNTER_QUEUELEN_TYPE: |
| 80 | case PERF_SAMPLE_COUNTER: |
| 81 | pRawData->Data = (ULONGLONG)(*(DWORD*)pData); |
| 82 | pRawData->Time = pDataBlock->PerfTime.QuadPart; |
| 83 | if (PERF_COUNTER_COUNTER == pCounter->CounterType || PERF_SAMPLE_COUNTER == pCounter->CounterType) |
| 84 | pRawData->Frequency = pDataBlock->PerfFreq.QuadPart; |
| 85 | break; |
| 86 | |
| 87 | case PERF_OBJ_TIME_TIMER: |
| 88 | pRawData->Data = (ULONGLONG)(*(DWORD*)pData); |
| 89 | pRawData->Time = pObject->PerfTime.QuadPart; |
| 90 | break; |
| 91 | |
| 92 | case PERF_COUNTER_100NS_QUEUELEN_TYPE: |
| 93 | pRawData->Data = *(UNALIGNED ULONGLONG *)pData; |
| 94 | pRawData->Time = pDataBlock->PerfTime100nSec.QuadPart; |
| 95 | break; |
| 96 | |
| 97 | case PERF_COUNTER_OBJ_TIME_QUEUELEN_TYPE: |
| 98 | pRawData->Data = *(UNALIGNED ULONGLONG *)pData; |
| 99 | pRawData->Time = pObject->PerfTime.QuadPart; |
| 100 | break; |
| 101 | |
| 102 | case PERF_COUNTER_TIMER: |
| 103 | case PERF_COUNTER_TIMER_INV: |
| 104 | case PERF_COUNTER_BULK_COUNT: |
| 105 | case PERF_COUNTER_LARGE_QUEUELEN_TYPE: |
| 106 | pullData = (UNALIGNED ULONGLONG *)pData; |
| 107 | pRawData->Data = *pullData; |
| 108 | pRawData->Time = pDataBlock->PerfTime.QuadPart; |
| 109 | if (pCounter->CounterType == PERF_COUNTER_BULK_COUNT) |
| 110 | pRawData->Frequency = pDataBlock->PerfFreq.QuadPart; |
| 111 | break; |
| 112 | |
| 113 | case PERF_COUNTER_MULTI_TIMER: |
| 114 | case PERF_COUNTER_MULTI_TIMER_INV: |
| 115 | pullData = (UNALIGNED ULONGLONG *)pData; |
| 116 | pRawData->Data = *pullData; |
| 117 | pRawData->Frequency = pDataBlock->PerfFreq.QuadPart; |
| 118 | pRawData->Time = pDataBlock->PerfTime.QuadPart; |
| 119 | |
| 120 | //These counter types have a second counter value that is adjacent to |
| 121 | //this counter value in the counter data block. The value is needed for |
| 122 | //the calculation. |
| 123 | if ((pCounter->CounterType & PERF_MULTI_COUNTER) == PERF_MULTI_COUNTER) { |
| 124 | ++pullData; |
| 125 | pRawData->MultiCounterData = *(DWORD*)pullData; |
| 126 | } |
| 127 | break; |
| 128 | |
| 129 | //These counters do not use any time reference. |
| 130 | case PERF_COUNTER_RAWCOUNT: |
| 131 | case PERF_COUNTER_RAWCOUNT_HEX: |
| 132 | case PERF_COUNTER_DELTA: |
| 133 | // some counters in these categories, have CounterSize = sizeof(ULONGLONG) |
| 134 | // but the official documentation always uses them as sizeof(DWORD) |
| 135 | pRawData->Data = (ULONGLONG)(*(DWORD*)pData); |
| 136 | pRawData->Time = 0; |
| 137 | break; |
| 138 | |
| 139 | case PERF_COUNTER_LARGE_RAWCOUNT: |
| 140 | case PERF_COUNTER_LARGE_RAWCOUNT_HEX: |
| 141 | case PERF_COUNTER_LARGE_DELTA: |
| 142 | pRawData->Data = *(UNALIGNED ULONGLONG*)pData; |
| 143 | pRawData->Time = 0; |
| 144 | break; |
| 145 | |
| 146 | //These counters use the 100ns time base in their calculation. |
| 147 | case PERF_100NSEC_TIMER: |
| 148 | case PERF_100NSEC_TIMER_INV: |
| 149 | case PERF_100NSEC_MULTI_TIMER: |
| 150 | case PERF_100NSEC_MULTI_TIMER_INV: |
| 151 | pullData = (UNALIGNED ULONGLONG*)pData; |
| 152 | pRawData->Data = *pullData; |
| 153 | pRawData->Time = pDataBlock->PerfTime100nSec.QuadPart; |
| 154 | |
| 155 | //These counter types have a second counter value that is adjacent to |
| 156 | //this counter value in the counter data block. The value is needed for |
| 157 | //the calculation. |
| 158 | if ((pCounter->CounterType & PERF_MULTI_COUNTER) == PERF_MULTI_COUNTER) { |
| 159 | ++pullData; |
| 160 | pRawData->MultiCounterData = *(DWORD*)pullData; |
| 161 | } |
| 162 | break; |
| 163 | |
| 164 | //These counters use two data points, this value and one from this counter's |
| 165 | //base counter. The base counter should be the next counter in the object's |
| 166 | //list of counters. |
| 167 | case PERF_SAMPLE_FRACTION: |
| 168 | case PERF_RAW_FRACTION: |
| 169 | pRawData->Data = (ULONGLONG)(*(DWORD*)pData); |
| 170 | pBaseCounter = pCounter + 1; //Get base counter |
| 171 | if ((pBaseCounter->CounterType & PERF_COUNTER_BASE) == PERF_COUNTER_BASE) { |
| 172 | pData = (PVOID)((LPBYTE)pCounterDataBlock + pBaseCounter->CounterOffset); |
| 173 | pRawData->Time = (LONGLONG)(*(DWORD*)pData); |
| 174 | } |
| 175 | else |
| 176 | fSuccess = FALSE; |
| 177 | break; |
| 178 | |
| 179 | case PERF_LARGE_RAW_FRACTION: |
| 180 | case PERF_PRECISION_SYSTEM_TIMER: |
| 181 | case PERF_PRECISION_100NS_TIMER: |
| 182 | case PERF_PRECISION_OBJECT_TIMER: |
| 183 | pRawData->Data = *(UNALIGNED ULONGLONG*)pData; |
| 184 | pBaseCounter = pCounter + 1; |
| 185 | if ((pBaseCounter->CounterType & PERF_COUNTER_BASE) == PERF_COUNTER_BASE) { |
| 186 | pData = (PVOID)((LPBYTE)pCounterDataBlock + pBaseCounter->CounterOffset); |
| 187 | pRawData->Time = *(LONGLONG*)pData; |
| 188 | } |
| 189 | else |
| 190 | fSuccess = FALSE; |
| 191 | break; |
| 192 | |
| 193 | case PERF_AVERAGE_TIMER: |
| 194 | case PERF_AVERAGE_BULK: |
| 195 | pRawData->Data = *(UNALIGNED ULONGLONG*)pData; |
| 196 | pBaseCounter = pCounter+1; |
| 197 | if ((pBaseCounter->CounterType & PERF_COUNTER_BASE) == PERF_COUNTER_BASE) { |
| 198 | pData = (PVOID)((LPBYTE)pCounterDataBlock + pBaseCounter->CounterOffset); |
| 199 | pRawData->Time = *(DWORD*)pData; |
| 200 | } |
| 201 | else |
| 202 | fSuccess = FALSE; |
| 203 | |
| 204 | if (pCounter->CounterType == PERF_AVERAGE_TIMER) |
| 205 | pRawData->Frequency = pDataBlock->PerfFreq.QuadPart; |
| 206 | break; |
| 207 | |
| 208 | //These are base counters and are used in calculations for other counters. |
| 209 | //This case should never be entered. |
| 210 | case PERF_SAMPLE_BASE: |
| 211 | case PERF_AVERAGE_BASE: |
| 212 | case PERF_COUNTER_MULTI_BASE: |
| 213 | case PERF_RAW_BASE: |
| 214 | case PERF_LARGE_RAW_BASE: |
| 215 | pRawData->Data = 0; |
| 216 | pRawData->Time = 0; |
| 217 | fSuccess = FALSE; |
| 218 | break; |
| 219 | |
| 220 | case PERF_ELAPSED_TIME: |
| 221 | pRawData->Data = *(UNALIGNED ULONGLONG*)pData; |
| 222 | pRawData->Time = pObject->PerfTime.QuadPart; |
| 223 | pRawData->Frequency = pObject->PerfFreq.QuadPart; |
| 224 | break; |
| 225 | |
| 226 | //These counters are currently not supported. |
| 227 | case PERF_COUNTER_TEXT: |
| 228 | case PERF_COUNTER_NODATA: |
| 229 | case PERF_COUNTER_HISTOGRAM_TYPE: |
| 230 | default: // unknown counter types |
| 231 | pRawData->Data = 0; |
| 232 | pRawData->Time = 0; |
| 233 | fSuccess = FALSE; |
| 234 | break; |
| 235 | } |
| 236 | |
| 237 | return fSuccess; |
| 238 | } |
| 239 | |
| 240 | // -------------------------------------------------------------------------------------------------------------------- |
| 241 | |
| 242 | ALWAYS_INLINE |
| 243 | static BOOL isValidPointer(PERF_DATA_BLOCK *pDataBlock, void *ptr) { |
| 244 | return |
| 245 | !pDataBlock || |
| 246 | (PBYTE)ptr < (PBYTE)pDataBlock || |
| 247 | (PBYTE)ptr >= (PBYTE)pDataBlock + pDataBlock->TotalByteLength ? FALSE : TRUE; |
| 248 | } |
| 249 | |
| 250 | ALWAYS_INLINE |
| 251 | static BOOL isValidStructure(PERF_DATA_BLOCK *pDataBlock, void *ptr, size_t length) { |
| 252 | return |
| 253 | !pDataBlock || |
| 254 | !length || length > pDataBlock->TotalByteLength || |
| 255 | (PBYTE)ptr < (PBYTE)pDataBlock || |
| 256 | (PBYTE)ptr > (PBYTE)ptr + length || // Check for pointer arithmetic overflow |
| 257 | (PBYTE)ptr + length > (PBYTE)pDataBlock + pDataBlock->TotalByteLength ? FALSE : TRUE; |
| 258 | } |
| 259 | |
| 260 | static inline PERF_DATA_BLOCK *getDataBlock(BYTE *pBuffer) { |
| 261 | PERF_DATA_BLOCK *pDataBlock = (PERF_DATA_BLOCK *)pBuffer; |
| 262 | |
| 263 | static WCHAR signature[] = { 'P', 'E', 'R', 'F' }; |
| 264 | |
| 265 | if(memcmp(pDataBlock->Signature, signature, sizeof(signature)) != 0) { |
| 266 | nd_log(NDLS_COLLECTORS, NDLP_ERR, |
| 267 | "WINDOWS: PERFLIB: Invalid data block signature."); |
| 268 | return NULL; |
| 269 | } |
| 270 | |
| 271 | if(!isValidPointer(pDataBlock, (PBYTE)pDataBlock + pDataBlock->SystemNameOffset) || |
| 272 | !isValidStructure(pDataBlock, (PBYTE)pDataBlock + pDataBlock->SystemNameOffset, pDataBlock->SystemNameLength)) { |
| 273 | nd_log(NDLS_COLLECTORS, NDLP_ERR, |
| 274 | "WINDOWS: PERFLIB: Invalid system name array."); |
| 275 | return NULL; |
| 276 | } |
| 277 | |
| 278 | return pDataBlock; |
| 279 | } |
| 280 | |
| 281 | ALWAYS_INLINE |
| 282 | static PERF_OBJECT_TYPE *getObjectType(PERF_DATA_BLOCK* pDataBlock, PERF_OBJECT_TYPE *lastObjectType) { |
| 283 | PERF_OBJECT_TYPE* pObjectType = NULL; |
| 284 | |
| 285 | if(!lastObjectType) |
| 286 | pObjectType = (PERF_OBJECT_TYPE *)((PBYTE)pDataBlock + pDataBlock->HeaderLength); |
| 287 | else if (lastObjectType->TotalByteLength != 0) |
| 288 | pObjectType = (PERF_OBJECT_TYPE *)((PBYTE)lastObjectType + lastObjectType->TotalByteLength); |
| 289 | |
| 290 | if(pObjectType && (!isValidPointer(pDataBlock, pObjectType) || !isValidStructure(pDataBlock, pObjectType, pObjectType->TotalByteLength))) { |
| 291 | nd_log(NDLS_COLLECTORS, NDLP_ERR, "WINDOWS: PERFLIB: %s(): Invalid ObjectType!", __FUNCTION__); |
| 292 | pObjectType = NULL; |
| 293 | } |
| 294 | |
| 295 | return pObjectType; |
| 296 | } |
| 297 | |
| 298 | ALWAYS_INLINE |
| 299 | PERF_OBJECT_TYPE *getObjectTypeByIndex(PERF_DATA_BLOCK *pDataBlock, DWORD ObjectNameTitleIndex) { |
| 300 | PERF_OBJECT_TYPE *po = NULL; |
| 301 | for(DWORD o = 0; o < pDataBlock->NumObjectTypes ; o++) { |
| 302 | po = getObjectType(pDataBlock, po); |
| 303 | if(!po) break; |
| 304 | |
| 305 | if(po->ObjectNameTitleIndex == ObjectNameTitleIndex) |
| 306 | return po; |
| 307 | } |
| 308 | |
| 309 | return NULL; |
| 310 | } |
| 311 | |
| 312 | ALWAYS_INLINE |
| 313 | static PERF_INSTANCE_DEFINITION *getInstance( |
| 314 | PERF_DATA_BLOCK *pDataBlock, |
| 315 | PERF_OBJECT_TYPE *pObjectType, |
| 316 | PERF_COUNTER_BLOCK *lastCounterBlock |
| 317 | ) { |
| 318 | if(unlikely(!pObjectType)) |
| 319 | return NULL; |
| 320 | |
| 321 | PERF_INSTANCE_DEFINITION *pInstance; |
| 322 | if(!lastCounterBlock) |
| 323 | pInstance = (PERF_INSTANCE_DEFINITION *)((PBYTE)pObjectType + pObjectType->DefinitionLength); |
| 324 | else |
| 325 | pInstance = (PERF_INSTANCE_DEFINITION *)((PBYTE)lastCounterBlock + lastCounterBlock->ByteLength); |
| 326 | |
| 327 | if(pInstance && (!isValidPointer(pDataBlock, pInstance) || !isValidStructure(pDataBlock, pInstance, pInstance->ByteLength))) { |
| 328 | nd_log(NDLS_COLLECTORS, NDLP_ERR, "WINDOWS: PERFLIB: %s(): Invalid Instance Definition!", __FUNCTION__); |
| 329 | pInstance = NULL; |
| 330 | } |
| 331 | |
| 332 | return pInstance; |
| 333 | } |
| 334 | |
| 335 | ALWAYS_INLINE |
| 336 | static PERF_COUNTER_BLOCK *getObjectTypeCounterBlock( |
| 337 | PERF_DATA_BLOCK *pDataBlock, |
| 338 | PERF_OBJECT_TYPE *pObjectType |
| 339 | ) { |
| 340 | if(unlikely(!pObjectType)) |
| 341 | return NULL; |
| 342 | |
| 343 | PERF_COUNTER_BLOCK *pCounterBlock = (PERF_COUNTER_BLOCK *)((PBYTE)pObjectType + pObjectType->DefinitionLength); |
| 344 | |
| 345 | if(pCounterBlock && (!isValidPointer(pDataBlock, pCounterBlock) || !isValidStructure(pDataBlock, pCounterBlock, pCounterBlock->ByteLength))) { |
| 346 | nd_log(NDLS_COLLECTORS, NDLP_ERR, "WINDOWS: PERFLIB: %s(): Invalid ObjectType CounterBlock!", __FUNCTION__); |
| 347 | pCounterBlock = NULL; |
| 348 | } |
| 349 | |
| 350 | return pCounterBlock; |
| 351 | } |
| 352 | |
| 353 | ALWAYS_INLINE |
| 354 | static PERF_COUNTER_BLOCK *getInstanceCounterBlock( |
| 355 | PERF_DATA_BLOCK *pDataBlock, |
| 356 | PERF_OBJECT_TYPE *pObjectType __maybe_unused, |
| 357 | PERF_INSTANCE_DEFINITION *pInstance |
| 358 | ) { |
| 359 | if(unlikely(!pInstance)) |
| 360 | return NULL; |
| 361 | |
| 362 | PERF_COUNTER_BLOCK *pCounterBlock = (PERF_COUNTER_BLOCK *)((PBYTE)pInstance + pInstance->ByteLength); |
| 363 | |
| 364 | if(pCounterBlock && (!isValidPointer(pDataBlock, pCounterBlock) || !isValidStructure(pDataBlock, pCounterBlock, pCounterBlock->ByteLength))) { |
| 365 | nd_log(NDLS_COLLECTORS, NDLP_ERR, "WINDOWS: PERFLIB: %s(): Invalid Instance CounterBlock!", __FUNCTION__); |
| 366 | pCounterBlock = NULL; |
| 367 | } |
| 368 | |
| 369 | return pCounterBlock; |
| 370 | } |
| 371 | |
| 372 | ALWAYS_INLINE |
| 373 | PERF_INSTANCE_DEFINITION *getInstanceByPosition(PERF_DATA_BLOCK *pDataBlock, PERF_OBJECT_TYPE *pObjectType, DWORD instancePosition) { |
| 374 | PERF_INSTANCE_DEFINITION *pi = NULL; |
| 375 | PERF_COUNTER_BLOCK *pc = NULL; |
| 376 | for(DWORD i = 0; i <= instancePosition ;i++) { |
| 377 | pi = getInstance(pDataBlock, pObjectType, pc); |
| 378 | pc = getInstanceCounterBlock(pDataBlock, pObjectType, pi); |
| 379 | } |
| 380 | return pi; |
| 381 | } |
| 382 | |
| 383 | ALWAYS_INLINE |
| 384 | static PERF_COUNTER_DEFINITION *getCounterDefinition(PERF_DATA_BLOCK *pDataBlock, PERF_OBJECT_TYPE *pObjectType, PERF_COUNTER_DEFINITION *lastCounterDefinition) { |
| 385 | if(unlikely(!pObjectType)) |
| 386 | return NULL; |
| 387 | |
| 388 | PERF_COUNTER_DEFINITION *pCounterDefinition = NULL; |
| 389 | if(!lastCounterDefinition) |
| 390 | pCounterDefinition = (PERF_COUNTER_DEFINITION *)((PBYTE)pObjectType + pObjectType->HeaderLength); |
| 391 | else |
| 392 | pCounterDefinition = (PERF_COUNTER_DEFINITION *)((PBYTE)lastCounterDefinition + lastCounterDefinition->ByteLength); |
| 393 | |
| 394 | if(pCounterDefinition && (!isValidPointer(pDataBlock, pCounterDefinition) || !isValidStructure(pDataBlock, pCounterDefinition, pCounterDefinition->ByteLength))) { |
| 395 | nd_log(NDLS_COLLECTORS, NDLP_ERR, "WINDOWS: PERFLIB: %s(): Invalid Counter Definition!", __FUNCTION__); |
| 396 | pCounterDefinition = NULL; |
| 397 | } |
| 398 | |
| 399 | return pCounterDefinition; |
| 400 | } |
| 401 | |
| 402 | // -------------------------------------------------------------------------------------------------------------------- |
| 403 | |
| 404 | ALWAYS_INLINE |
| 405 | static BOOL getEncodedStringToUTF8(char *dst, size_t dst_len, DWORD CodePage, char *start, DWORD length) { |
| 406 | static __thread wchar_t unicode[PERFLIB_MAX_NAME_LENGTH]; |
| 407 | |
| 408 | WCHAR *tempBuffer; // Temporary buffer for Unicode data |
| 409 | DWORD charsCopied = 0; |
| 410 | |
| 411 | if (CodePage == 0) { |
| 412 | // Input is already Unicode (UTF-16) |
| 413 | tempBuffer = (WCHAR *)start; |
| 414 | charsCopied = length / sizeof(WCHAR); // Convert byte length to number of WCHARs |
| 415 | } |
| 416 | else { |
| 417 | tempBuffer = unicode; |
| 418 | charsCopied = any_to_utf16(CodePage, unicode, _countof(unicode), start, (int)length, NULL); |
| 419 | if(!charsCopied) return FALSE; |
| 420 | } |
| 421 | |
| 422 | // Now convert from Unicode (UTF-16) to UTF-8 |
| 423 | int bytesCopied = WideCharToMultiByte(CP_UTF8, 0, tempBuffer, (int)charsCopied, dst, (int)dst_len, NULL, NULL); |
| 424 | if (bytesCopied == 0) { |
| 425 | dst[0] = '\0'; // Ensure the buffer is null-terminated even on failure |
| 426 | return FALSE; |
| 427 | } |
| 428 | |
| 429 | dst[bytesCopied - 1] = '\0'; // Ensure buffer is null-terminated |
| 430 | return TRUE; |
| 431 | } |
| 432 | |
| 433 | ALWAYS_INLINE |
| 434 | BOOL getInstanceName(PERF_DATA_BLOCK *pDataBlock, PERF_OBJECT_TYPE *pObjectType, PERF_INSTANCE_DEFINITION *pInstance, |
| 435 | char *buffer, size_t bufferLen) { |
| 436 | (void)pDataBlock; |
| 437 | if (!pObjectType || !pInstance || !buffer || !bufferLen) |
| 438 | return FALSE; |
| 439 | |
| 440 | return getEncodedStringToUTF8(buffer, bufferLen, pObjectType->CodePage, |
| 441 | ((char *)pInstance + pInstance->NameOffset), pInstance->NameLength); |
| 442 | } |
| 443 | |
| 444 | ALWAYS_INLINE |
| 445 | BOOL getSystemName(PERF_DATA_BLOCK *pDataBlock, char *buffer, size_t bufferLen) { |
| 446 | return getEncodedStringToUTF8(buffer, bufferLen, 0, |
| 447 | ((char *)pDataBlock + pDataBlock->SystemNameOffset), pDataBlock->SystemNameLength); |
| 448 | } |
| 449 | |
| 450 | ALWAYS_INLINE |
| 451 | BOOL ObjectTypeHasInstances(PERF_DATA_BLOCK *pDataBlock, PERF_OBJECT_TYPE *pObjectType) { |
| 452 | (void)pDataBlock; |
| 453 | return pObjectType && pObjectType->NumInstances != PERF_NO_INSTANCES && pObjectType->NumInstances > 0 ? TRUE : FALSE; |
| 454 | } |
| 455 | |
| 456 | PERF_OBJECT_TYPE *perflibFindObjectTypeByName(PERF_DATA_BLOCK *pDataBlock, const char *name) { |
| 457 | PERF_OBJECT_TYPE* pObjectType = NULL; |
| 458 | for(DWORD o = 0; o < pDataBlock->NumObjectTypes; o++) { |
| 459 | pObjectType = getObjectType(pDataBlock, pObjectType); |
| 460 | if(!pObjectType) break; |
| 461 | if(strcmp(name, RegistryFindNameByID(pObjectType->ObjectNameTitleIndex)) == 0) |
| 462 | return pObjectType; |
| 463 | } |
| 464 | |
| 465 | return NULL; |
| 466 | } |
| 467 | |
| 468 | PERF_INSTANCE_DEFINITION *perflibForEachInstance(PERF_DATA_BLOCK *pDataBlock, PERF_OBJECT_TYPE *pObjectType, PERF_INSTANCE_DEFINITION *lastInstance) { |
| 469 | if(!ObjectTypeHasInstances(pDataBlock, pObjectType)) |
| 470 | return NULL; |
| 471 | |
| 472 | return getInstance(pDataBlock, pObjectType, |
| 473 | lastInstance ? |
| 474 | getInstanceCounterBlock(pDataBlock, pObjectType, lastInstance) : |
| 475 | NULL ); |
| 476 | } |
| 477 | |
| 478 | bool perflibGetInstanceCounter(PERF_DATA_BLOCK *pDataBlock, PERF_OBJECT_TYPE *pObjectType, PERF_INSTANCE_DEFINITION *pInstance, COUNTER_DATA *cd) { |
| 479 | DWORD id = cd->id; |
| 480 | const char *key = cd->key; |
| 481 | internal_fatal(key == NULL, "You have to set a key for this call."); |
| 482 | |
| 483 | if(unlikely(cd->failures >= PERFLIB_MAX_FAILURES_TO_FIND_METRIC)) { |
| 484 | // we don't want to lookup and compare strings all the time |
| 485 | // when a metric is not there, so we try to find it for |
| 486 | // XX times, and then we give up. |
| 487 | |
| 488 | if(cd->failures == PERFLIB_MAX_FAILURES_TO_FIND_METRIC) { |
| 489 | nd_log(NDLS_COLLECTORS, NDLP_ERR, |
| 490 | "WINDOWS: PERFLIB: Giving up on metric '%s' (tried to find it %u times).", |
| 491 | cd->key, cd->failures); |
| 492 | |
| 493 | cd->failures++; // increment it once, so that we will not log this again |
| 494 | } |
| 495 | |
| 496 | goto failed; |
| 497 | } |
| 498 | |
| 499 | PERF_COUNTER_DEFINITION *pCounterDefinition = NULL; |
| 500 | for(DWORD c = 0; c < pObjectType->NumCounters ;c++) { |
| 501 | pCounterDefinition = getCounterDefinition(pDataBlock, pObjectType, pCounterDefinition); |
| 502 | if(!pCounterDefinition) { |
| 503 | nd_log(NDLS_COLLECTORS, NDLP_ERR, |
| 504 | "WINDOWS: PERFLIB: Cannot read counter definition No %u (out of %u)", |
| 505 | c, pObjectType->NumCounters); |
| 506 | break; |
| 507 | } |
| 508 | |
| 509 | if(id) { |
| 510 | if(id != pCounterDefinition->CounterNameTitleIndex) |
| 511 | continue; |
| 512 | } |
| 513 | else { |
| 514 | const char *name = RegistryFindNameByID(pCounterDefinition->CounterNameTitleIndex); |
| 515 | if(strcmp(name, key) != 0) |
| 516 | continue; |
| 517 | |
| 518 | cd->id = pCounterDefinition->CounterNameTitleIndex; |
| 519 | } |
| 520 | |
| 521 | cd->current.CounterType = cd->OverwriteCounterType ? cd->OverwriteCounterType : pCounterDefinition->CounterType; |
| 522 | PERF_COUNTER_BLOCK *pCounterBlock = getInstanceCounterBlock(pDataBlock, pObjectType, pInstance); |
| 523 | |
| 524 | cd->previous = cd->current; |
| 525 | if(likely(getCounterData(pDataBlock, pObjectType, pCounterDefinition, pCounterBlock, &cd->current))) { |
| 526 | cd->updated = true; |
| 527 | cd->failures = 0; |
| 528 | return true; |
| 529 | } |
| 530 | } |
| 531 | |
| 532 | cd->failures++; |
| 533 | |
| 534 | failed: |
| 535 | cd->previous = cd->current; |
| 536 | cd->current = RAW_DATA_EMPTY; |
| 537 | cd->updated = false; |
| 538 | return false; |
| 539 | } |
| 540 | |
| 541 | bool perflibGetObjectCounter(PERF_DATA_BLOCK *pDataBlock, PERF_OBJECT_TYPE *pObjectType, COUNTER_DATA *cd) { |
| 542 | if (unlikely(!pObjectType)) |
| 543 | goto cleanup; |
| 544 | |
| 545 | PERF_COUNTER_DEFINITION *pCounterDefinition = NULL; |
| 546 | for(DWORD c = 0; c < pObjectType->NumCounters ;c++) { |
| 547 | pCounterDefinition = getCounterDefinition(pDataBlock, pObjectType, pCounterDefinition); |
| 548 | if(!pCounterDefinition) { |
| 549 | nd_log(NDLS_COLLECTORS, NDLP_ERR, |
| 550 | "WINDOWS: PERFLIB: Cannot read counter definition No %u (out of %u)", |
| 551 | c, pObjectType->NumCounters); |
| 552 | break; |
| 553 | } |
| 554 | |
| 555 | if(cd->id) { |
| 556 | if(cd->id != pCounterDefinition->CounterNameTitleIndex) |
| 557 | continue; |
| 558 | } |
| 559 | else { |
| 560 | if(strcmp(RegistryFindNameByID(pCounterDefinition->CounterNameTitleIndex), cd->key) != 0) |
| 561 | continue; |
| 562 | |
| 563 | cd->id = pCounterDefinition->CounterNameTitleIndex; |
| 564 | } |
| 565 | |
| 566 | cd->current.CounterType = cd->OverwriteCounterType ? cd->OverwriteCounterType : pCounterDefinition->CounterType; |
| 567 | PERF_COUNTER_BLOCK *pCounterBlock = getObjectTypeCounterBlock(pDataBlock, pObjectType); |
| 568 | |
| 569 | cd->previous = cd->current; |
| 570 | cd->updated = getCounterData(pDataBlock, pObjectType, pCounterDefinition, pCounterBlock, &cd->current); |
| 571 | return cd->updated; |
| 572 | } |
| 573 | |
| 574 | cleanup: |
| 575 | cd->previous = cd->current; |
| 576 | cd->current = RAW_DATA_EMPTY; |
| 577 | cd->updated = false; |
| 578 | return false; |
| 579 | } |
| 580 | |
| 581 | PERF_DATA_BLOCK *perflibGetPerformanceData(DWORD id) { |
| 582 | char source[24]; |
| 583 | snprintfz(source, sizeof(source), "%u", id); |
| 584 | |
| 585 | LPBYTE pData = (LPBYTE)getPerformanceData((id > 0) ? source : NULL); |
| 586 | if (!pData) return NULL; |
| 587 | |
| 588 | PERF_DATA_BLOCK *pDataBlock = getDataBlock(pData); |
| 589 | if(!pDataBlock) return NULL; |
| 590 | |
| 591 | return pDataBlock; |
| 592 | } |
| 593 | |
| 594 | int perflibQueryAndTraverse(DWORD id, |
| 595 | perflib_data_cb dataCb, |
| 596 | perflib_object_cb objectCb, |
| 597 | perflib_instance_cb instanceCb, |
| 598 | perflib_instance_counter_cb instanceCounterCb, |
| 599 | perflib_counter_cb counterCb, |
| 600 | void *data) { |
| 601 | int counters = -1; |
| 602 | |
| 603 | PERF_DATA_BLOCK *pDataBlock = perflibGetPerformanceData(id); |
| 604 | if(!pDataBlock) goto cleanup; |
| 605 | |
| 606 | bool do_data = true; |
| 607 | if(dataCb) |
| 608 | do_data = dataCb(pDataBlock, data); |
| 609 | |
| 610 | PERF_OBJECT_TYPE* pObjectType = NULL; |
| 611 | for(DWORD o = 0; do_data && o < pDataBlock->NumObjectTypes; o++) { |
| 612 | pObjectType = getObjectType(pDataBlock, pObjectType); |
| 613 | if(!pObjectType) { |
| 614 | nd_log(NDLS_COLLECTORS, NDLP_ERR, |
| 615 | "WINDOWS: PERFLIB: Cannot read object type No %d (out of %d)", |
| 616 | o, pDataBlock->NumObjectTypes); |
| 617 | break; |
| 618 | } |
| 619 | |
| 620 | bool do_object = true; |
| 621 | if(objectCb) |
| 622 | do_object = objectCb(pDataBlock, pObjectType, data); |
| 623 | |
| 624 | if(!do_object) |
| 625 | continue; |
| 626 | |
| 627 | if(ObjectTypeHasInstances(pDataBlock, pObjectType)) { |
| 628 | PERF_INSTANCE_DEFINITION *pInstance = NULL; |
| 629 | PERF_COUNTER_BLOCK *pCounterBlock = NULL; |
| 630 | for(LONG i = 0; i < pObjectType->NumInstances ;i++) { |
| 631 | pInstance = getInstance(pDataBlock, pObjectType, pCounterBlock); |
| 632 | if(!pInstance) { |
| 633 | nd_log(NDLS_COLLECTORS, NDLP_ERR, |
| 634 | "WINDOWS: PERFLIB: Cannot read Instance No %d (out of %d)", |
| 635 | i, pObjectType->NumInstances); |
| 636 | break; |
| 637 | } |
| 638 | |
| 639 | pCounterBlock = getInstanceCounterBlock(pDataBlock, pObjectType, pInstance); |
| 640 | if(!pCounterBlock) { |
| 641 | nd_log(NDLS_COLLECTORS, NDLP_ERR, |
| 642 | "WINDOWS: PERFLIB: Cannot read CounterBlock of instance No %d (out of %d)", |
| 643 | i, pObjectType->NumInstances); |
| 644 | break; |
| 645 | } |
| 646 | |
| 647 | bool do_instance = true; |
| 648 | if(instanceCb) |
| 649 | do_instance = instanceCb(pDataBlock, pObjectType, pInstance, data); |
| 650 | |
| 651 | if(!do_instance) |
| 652 | continue; |
| 653 | |
| 654 | PERF_COUNTER_DEFINITION *pCounterDefinition = NULL; |
| 655 | for(DWORD c = 0; c < pObjectType->NumCounters ;c++) { |
| 656 | pCounterDefinition = getCounterDefinition(pDataBlock, pObjectType, pCounterDefinition); |
| 657 | if(!pCounterDefinition) { |
| 658 | nd_log(NDLS_COLLECTORS, NDLP_ERR, |
| 659 | "WINDOWS: PERFLIB: Cannot read counter definition No %u (out of %u)", |
| 660 | c, pObjectType->NumCounters); |
| 661 | break; |
| 662 | } |
| 663 | |
| 664 | RAW_DATA sample = { |
| 665 | .CounterType = pCounterDefinition->CounterType, |
| 666 | }; |
| 667 | if(getCounterData(pDataBlock, pObjectType, pCounterDefinition, pCounterBlock, &sample)) { |
| 668 | // DisplayCalculatedValue(&sample, &sample); |
| 669 | |
| 670 | if(instanceCounterCb) { |
| 671 | instanceCounterCb(pDataBlock, pObjectType, pInstance, pCounterDefinition, &sample, data); |
| 672 | counters++; |
| 673 | } |
| 674 | } |
| 675 | } |
| 676 | |
| 677 | if(instanceCb) |
| 678 | instanceCb(pDataBlock, pObjectType, NULL, data); |
| 679 | } |
| 680 | } |
| 681 | else { |
| 682 | PERF_COUNTER_BLOCK *pCounterBlock = getObjectTypeCounterBlock(pDataBlock, pObjectType); |
| 683 | PERF_COUNTER_DEFINITION *pCounterDefinition = NULL; |
| 684 | for(DWORD c = 0; c < pObjectType->NumCounters ;c++) { |
| 685 | pCounterDefinition = getCounterDefinition(pDataBlock, pObjectType, pCounterDefinition); |
| 686 | if(!pCounterDefinition) { |
| 687 | nd_log(NDLS_COLLECTORS, NDLP_ERR, |
| 688 | "WINDOWS: PERFLIB: Cannot read counter definition No %u (out of %u)", |
| 689 | c, pObjectType->NumCounters); |
| 690 | break; |
| 691 | } |
| 692 | |
| 693 | RAW_DATA sample = { |
| 694 | .CounterType = pCounterDefinition->CounterType, |
| 695 | }; |
| 696 | if(getCounterData(pDataBlock, pObjectType, pCounterDefinition, pCounterBlock, &sample)) { |
| 697 | // DisplayCalculatedValue(&sample, &sample); |
| 698 | |
| 699 | if(counterCb) { |
| 700 | counterCb(pDataBlock, pObjectType, pCounterDefinition, &sample, data); |
| 701 | counters++; |
| 702 | } |
| 703 | } |
| 704 | } |
| 705 | } |
| 706 | |
| 707 | if(objectCb) |
| 708 | objectCb(pDataBlock, NULL, data); |
| 709 | } |
| 710 | |
| 711 | cleanup: |
| 712 | return counters; |
| 713 | } |
| 714 | |
| 715 | #endif // OS_WINDOWS |