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c06ad33e | 1 | /** @file\r |
86da563d ED |
2 | Utility functions used by the Dp application.\r |
3 | \r | |
13935109 | 4 | Copyright (c) 2009 - 2017, Intel Corporation. All rights reserved.<BR>\r |
0cd1e699 | 5 | (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>\r |
86da563d ED |
6 | This program and the accompanying materials\r |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
c06ad33e | 13 | **/\r |
14 | \r | |
15 | #include <Library/BaseLib.h>\r | |
16 | #include <Library/BaseMemoryLib.h>\r | |
17 | #include <Library/MemoryAllocationLib.h>\r | |
18 | #include <Library/DebugLib.h>\r | |
19 | #include <Library/UefiBootServicesTableLib.h>\r | |
c06ad33e | 20 | #include <Library/PeCoffGetEntryPointLib.h>\r |
21 | #include <Library/PrintLib.h>\r | |
22 | #include <Library/HiiLib.h>\r | |
23 | #include <Library/PcdLib.h>\r | |
a2daf8db SZ |
24 | #include <Library/UefiLib.h>\r |
25 | #include <Library/DevicePathLib.h>\r | |
26 | \r | |
27 | #include <Pi/PiFirmwareFile.h>\r | |
28 | #include <Library/DxeServicesLib.h>\r | |
c06ad33e | 29 | \r |
30 | #include <Protocol/LoadedImage.h>\r | |
16d5d168 | 31 | #include <Protocol/DriverBinding.h>\r |
a2daf8db SZ |
32 | #include <Protocol/ComponentName2.h>\r |
33 | #include <Protocol/DevicePath.h>\r | |
c06ad33e | 34 | \r |
35 | #include <Guid/Performance.h>\r | |
36 | \r | |
37 | #include "Dp.h"\r | |
38 | #include "Literals.h"\r | |
39 | #include "DpInternal.h"\r | |
40 | \r | |
a2daf8db SZ |
41 | /**\r |
42 | Wrap original FreePool to check NULL pointer first.\r | |
43 | \r | |
44 | @param[in] Buffer The pointer to the buffer to free.\r | |
45 | \r | |
46 | **/\r | |
47 | VOID\r | |
48 | SafeFreePool (\r | |
49 | IN VOID *Buffer\r | |
50 | )\r | |
51 | {\r | |
52 | if (Buffer != NULL) {\r | |
53 | FreePool (Buffer);\r | |
54 | }\r | |
55 | }\r | |
56 | \r | |
9dd74618 ED |
57 | /** \r |
58 | Calculate an event's duration in timer ticks.\r | |
59 | \r | |
60 | Given the count direction and the event's start and end timer values,\r | |
61 | calculate the duration of the event in timer ticks. Information for\r | |
62 | the current measurement is pointed to by the parameter.\r | |
63 | \r | |
64 | If the measurement's start time is 1, it indicates that the developer\r | |
65 | is indicating that the measurement began at the release of reset.\r | |
66 | The start time is adjusted to the timer's starting count before performing\r | |
67 | the elapsed time calculation.\r | |
68 | \r | |
69 | The calculated duration, in ticks, is the absolute difference between\r | |
70 | the measurement's ending and starting counts.\r | |
71 | \r | |
72 | @param Measurement Pointer to a MEASUREMENT_RECORD structure containing\r | |
73 | data for the current measurement.\r | |
74 | \r | |
75 | @return The 64-bit duration of the event.\r | |
c06ad33e | 76 | **/\r |
77 | UINT64\r | |
78 | GetDuration (\r | |
79 | IN OUT MEASUREMENT_RECORD *Measurement\r | |
80 | )\r | |
81 | {\r | |
82 | UINT64 Duration;\r | |
83 | BOOLEAN Error;\r | |
84 | \r | |
0cd1e699 CS |
85 | if (Measurement->EndTimeStamp == 0) {\r |
86 | return 0;\r | |
87 | }\r | |
88 | \r | |
c06ad33e | 89 | // PERF_START macros are called with a value of 1 to indicate\r |
90 | // the beginning of time. So, adjust the start ticker value\r | |
91 | // to the real beginning of time.\r | |
92 | // Assumes no wraparound. Even then, there is a very low probability\r | |
93 | // of having a valid StartTicker value of 1.\r | |
94 | if (Measurement->StartTimeStamp == 1) {\r | |
95 | Measurement->StartTimeStamp = TimerInfo.StartCount;\r | |
96 | }\r | |
97 | if (TimerInfo.CountUp) {\r | |
98 | Duration = Measurement->EndTimeStamp - Measurement->StartTimeStamp;\r | |
99 | Error = (BOOLEAN)(Duration > Measurement->EndTimeStamp);\r | |
100 | }\r | |
101 | else {\r | |
102 | Duration = Measurement->StartTimeStamp - Measurement->EndTimeStamp;\r | |
103 | Error = (BOOLEAN)(Duration > Measurement->StartTimeStamp);\r | |
104 | }\r | |
105 | \r | |
106 | if (Error) {\r | |
107 | DEBUG ((EFI_D_ERROR, ALit_TimerLibError));\r | |
108 | Duration = 0;\r | |
109 | }\r | |
110 | return Duration;\r | |
111 | }\r | |
112 | \r | |
9dd74618 ED |
113 | /** \r |
114 | Determine whether the Measurement record is for an EFI Phase.\r | |
115 | \r | |
116 | The Token and Module members of the measurement record are checked.\r | |
117 | Module must be empty and Token must be one of SEC, PEI, DXE, BDS, or SHELL.\r | |
118 | \r | |
119 | @param[in] Measurement A pointer to the Measurement record to test.\r | |
120 | \r | |
121 | @retval TRUE The measurement record is for an EFI Phase.\r | |
122 | @retval FALSE The measurement record is NOT for an EFI Phase.\r | |
c06ad33e | 123 | **/\r |
124 | BOOLEAN\r | |
125 | IsPhase(\r | |
126 | IN MEASUREMENT_RECORD *Measurement\r | |
127 | )\r | |
128 | {\r | |
129 | BOOLEAN RetVal;\r | |
130 | \r | |
131 | RetVal = (BOOLEAN)( ( *Measurement->Module == '\0') &&\r | |
132 | ((AsciiStrnCmp (Measurement->Token, ALit_SEC, PERF_TOKEN_LENGTH) == 0) ||\r | |
133 | (AsciiStrnCmp (Measurement->Token, ALit_PEI, PERF_TOKEN_LENGTH) == 0) ||\r | |
134 | (AsciiStrnCmp (Measurement->Token, ALit_DXE, PERF_TOKEN_LENGTH) == 0) ||\r | |
135 | (AsciiStrnCmp (Measurement->Token, ALit_BDS, PERF_TOKEN_LENGTH) == 0))\r | |
136 | );\r | |
137 | return RetVal;\r | |
138 | }\r | |
139 | \r | |
9dd74618 ED |
140 | /** \r |
141 | Get the file name portion of the Pdb File Name.\r | |
142 | \r | |
143 | The portion of the Pdb File Name between the last backslash and\r | |
144 | either a following period or the end of the string is converted\r | |
145 | to Unicode and copied into UnicodeBuffer. The name is truncated,\r | |
146 | if necessary, to ensure that UnicodeBuffer is not overrun.\r | |
147 | \r | |
148 | @param[in] PdbFileName Pdb file name.\r | |
149 | @param[out] UnicodeBuffer The resultant Unicode File Name.\r | |
150 | \r | |
c06ad33e | 151 | **/\r |
152 | VOID\r | |
153 | GetShortPdbFileName (\r | |
154 | IN CHAR8 *PdbFileName,\r | |
155 | OUT CHAR16 *UnicodeBuffer\r | |
156 | )\r | |
157 | {\r | |
158 | UINTN IndexA; // Current work location within an ASCII string.\r | |
159 | UINTN IndexU; // Current work location within a Unicode string.\r | |
160 | UINTN StartIndex;\r | |
161 | UINTN EndIndex;\r | |
162 | \r | |
269e0aeb | 163 | ZeroMem (UnicodeBuffer, (DP_GAUGE_STRING_LENGTH + 1) * sizeof (CHAR16));\r |
c06ad33e | 164 | \r |
165 | if (PdbFileName == NULL) {\r | |
269e0aeb | 166 | StrCpyS (UnicodeBuffer, DP_GAUGE_STRING_LENGTH + 1, L" ");\r |
c06ad33e | 167 | } else {\r |
168 | StartIndex = 0;\r | |
169 | for (EndIndex = 0; PdbFileName[EndIndex] != 0; EndIndex++)\r | |
170 | ;\r | |
171 | for (IndexA = 0; PdbFileName[IndexA] != 0; IndexA++) {\r | |
206a1f1f | 172 | if ((PdbFileName[IndexA] == '\\') || (PdbFileName[IndexA] == '/')) {\r |
c06ad33e | 173 | StartIndex = IndexA + 1;\r |
174 | }\r | |
175 | \r | |
176 | if (PdbFileName[IndexA] == '.') {\r | |
177 | EndIndex = IndexA;\r | |
178 | }\r | |
179 | }\r | |
180 | \r | |
181 | IndexU = 0;\r | |
182 | for (IndexA = StartIndex; IndexA < EndIndex; IndexA++) {\r | |
183 | UnicodeBuffer[IndexU] = (CHAR16) PdbFileName[IndexA];\r | |
184 | IndexU++;\r | |
269e0aeb HW |
185 | if (IndexU >= DP_GAUGE_STRING_LENGTH) {\r |
186 | UnicodeBuffer[DP_GAUGE_STRING_LENGTH] = 0;\r | |
c06ad33e | 187 | break;\r |
188 | }\r | |
189 | }\r | |
190 | }\r | |
191 | }\r | |
192 | \r | |
9dd74618 ED |
193 | /** \r |
194 | Get a human readable name for an image handle.\r | |
a2daf8db SZ |
195 | The following methods will be tried orderly:\r |
196 | 1. Image PDB\r | |
197 | 2. ComponentName2 protocol\r | |
198 | 3. FFS UI section\r | |
199 | 4. Image GUID\r | |
200 | 5. Image DevicePath\r | |
201 | 6. Unknown Driver Name\r | |
202 | \r | |
9dd74618 | 203 | @param[in] Handle\r |
a2daf8db | 204 | \r |
9dd74618 ED |
205 | @post The resulting Unicode name string is stored in the\r |
206 | mGaugeString global array.\r | |
a2daf8db | 207 | \r |
c06ad33e | 208 | **/\r |
209 | VOID\r | |
210 | GetNameFromHandle (\r | |
211 | IN EFI_HANDLE Handle\r | |
212 | )\r | |
213 | {\r | |
214 | EFI_STATUS Status;\r | |
215 | EFI_LOADED_IMAGE_PROTOCOL *Image;\r | |
216 | CHAR8 *PdbFileName;\r | |
217 | EFI_DRIVER_BINDING_PROTOCOL *DriverBinding;\r | |
218 | EFI_STRING StringPtr;\r | |
a2daf8db SZ |
219 | EFI_DEVICE_PATH_PROTOCOL *LoadedImageDevicePath;\r |
220 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
221 | EFI_GUID *NameGuid;\r | |
222 | CHAR16 *NameString;\r | |
223 | UINTN StringSize;\r | |
224 | CHAR8 *PlatformLanguage;\r | |
10516d29 | 225 | CHAR8 *BestLanguage;\r |
a2daf8db | 226 | EFI_COMPONENT_NAME2_PROTOCOL *ComponentName2;\r |
c06ad33e | 227 | \r |
5d2afd44 SZ |
228 | Image = NULL;\r |
229 | LoadedImageDevicePath = NULL;\r | |
230 | DevicePath = NULL;\r | |
10516d29 ED |
231 | BestLanguage = NULL;\r |
232 | PlatformLanguage = NULL;\r | |
233 | \r | |
a2daf8db SZ |
234 | //\r |
235 | // Method 1: Get the name string from image PDB\r | |
c06ad33e | 236 | //\r |
237 | Status = gBS->HandleProtocol (\r | |
a2daf8db SZ |
238 | Handle,\r |
239 | &gEfiLoadedImageProtocolGuid,\r | |
240 | (VOID **) &Image\r | |
241 | );\r | |
c06ad33e | 242 | \r |
243 | if (EFI_ERROR (Status)) {\r | |
244 | Status = gBS->OpenProtocol (\r | |
a2daf8db SZ |
245 | Handle,\r |
246 | &gEfiDriverBindingProtocolGuid,\r | |
247 | (VOID **) &DriverBinding,\r | |
248 | NULL,\r | |
249 | NULL,\r | |
250 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
251 | );\r | |
252 | if (!EFI_ERROR (Status)) {\r | |
253 | Status = gBS->HandleProtocol (\r | |
254 | DriverBinding->ImageHandle,\r | |
255 | &gEfiLoadedImageProtocolGuid,\r | |
256 | (VOID **) &Image\r | |
257 | );\r | |
258 | }\r | |
259 | }\r | |
260 | \r | |
261 | if (!EFI_ERROR (Status)) {\r | |
262 | PdbFileName = PeCoffLoaderGetPdbPointer (Image->ImageBase);\r | |
263 | \r | |
264 | if (PdbFileName != NULL) {\r | |
265 | GetShortPdbFileName (PdbFileName, mGaugeString);\r | |
266 | return;\r | |
267 | }\r | |
268 | }\r | |
269 | \r | |
270 | //\r | |
271 | // Method 2: Get the name string from ComponentName2 protocol\r | |
272 | //\r | |
273 | Status = gBS->HandleProtocol (\r | |
c06ad33e | 274 | Handle,\r |
a2daf8db SZ |
275 | &gEfiComponentName2ProtocolGuid,\r |
276 | (VOID **) &ComponentName2\r | |
c06ad33e | 277 | );\r |
a2daf8db SZ |
278 | if (!EFI_ERROR (Status)) {\r |
279 | //\r | |
280 | // Get the current platform language setting\r | |
281 | //\r | |
f01b91ae | 282 | GetEfiGlobalVariable2 (L"PlatformLang", (VOID**)&PlatformLanguage, NULL);\r |
10516d29 ED |
283 | \r |
284 | BestLanguage = GetBestLanguage(\r | |
285 | ComponentName2->SupportedLanguages,\r | |
286 | FALSE,\r | |
287 | PlatformLanguage,\r | |
288 | ComponentName2->SupportedLanguages,\r | |
289 | NULL\r | |
290 | );\r | |
291 | \r | |
292 | SafeFreePool (PlatformLanguage);\r | |
a2daf8db SZ |
293 | Status = ComponentName2->GetDriverName (\r |
294 | ComponentName2,\r | |
10516d29 | 295 | BestLanguage,\r |
a2daf8db SZ |
296 | &StringPtr\r |
297 | );\r | |
10516d29 | 298 | SafeFreePool (BestLanguage);\r |
a2daf8db | 299 | if (!EFI_ERROR (Status)) {\r |
6bc4e42f | 300 | StrnCpyS (\r |
ecd58a25 HW |
301 | mGaugeString,\r |
302 | DP_GAUGE_STRING_LENGTH + 1,\r | |
6bc4e42f HW |
303 | StringPtr,\r |
304 | DP_GAUGE_STRING_LENGTH\r | |
ecd58a25 | 305 | );\r |
a2daf8db | 306 | return;\r |
c06ad33e | 307 | }\r |
a2daf8db | 308 | }\r |
c06ad33e | 309 | \r |
a2daf8db SZ |
310 | Status = gBS->HandleProtocol (\r |
311 | Handle,\r | |
312 | &gEfiLoadedImageDevicePathProtocolGuid,\r | |
313 | (VOID **) &LoadedImageDevicePath\r | |
c06ad33e | 314 | );\r |
7ea7eee3 | 315 | if (!EFI_ERROR (Status) && (LoadedImageDevicePath != NULL)) {\r |
a2daf8db | 316 | DevicePath = LoadedImageDevicePath;\r |
5d2afd44 SZ |
317 | } else if (Image != NULL) {\r |
318 | DevicePath = Image->FilePath;\r | |
319 | }\r | |
c06ad33e | 320 | \r |
5d2afd44 | 321 | if (DevicePath != NULL) {\r |
a2daf8db | 322 | //\r |
5d2afd44 | 323 | // Try to get image GUID from image DevicePath\r |
a2daf8db SZ |
324 | //\r |
325 | NameGuid = NULL;\r | |
326 | while (!IsDevicePathEndType (DevicePath)) {\r | |
327 | NameGuid = EfiGetNameGuidFromFwVolDevicePathNode ((MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *) DevicePath);\r | |
328 | if (NameGuid != NULL) {\r | |
329 | break;\r | |
330 | }\r | |
331 | DevicePath = NextDevicePathNode (DevicePath);\r | |
332 | }\r | |
c06ad33e | 333 | \r |
a2daf8db SZ |
334 | if (NameGuid != NULL) {\r |
335 | //\r | |
336 | // Try to get the image's FFS UI section by image GUID\r | |
337 | //\r | |
338 | NameString = NULL;\r | |
339 | StringSize = 0;\r | |
340 | Status = GetSectionFromAnyFv (\r | |
341 | NameGuid,\r | |
342 | EFI_SECTION_USER_INTERFACE,\r | |
343 | 0,\r | |
f7fe94ab | 344 | (VOID **) &NameString,\r |
a2daf8db SZ |
345 | &StringSize\r |
346 | );\r | |
347 | \r | |
348 | if (!EFI_ERROR (Status)) {\r | |
349 | //\r | |
350 | // Method 3. Get the name string from FFS UI section\r | |
351 | //\r | |
6bc4e42f | 352 | StrnCpyS (\r |
ecd58a25 HW |
353 | mGaugeString,\r |
354 | DP_GAUGE_STRING_LENGTH + 1,\r | |
6bc4e42f HW |
355 | NameString,\r |
356 | DP_GAUGE_STRING_LENGTH\r | |
ecd58a25 | 357 | );\r |
a2daf8db SZ |
358 | FreePool (NameString);\r |
359 | } else {\r | |
360 | //\r | |
361 | // Method 4: Get the name string from image GUID\r | |
362 | //\r | |
363 | UnicodeSPrint (mGaugeString, sizeof (mGaugeString), L"%g", NameGuid);\r | |
364 | }\r | |
365 | return;\r | |
366 | } else {\r | |
367 | //\r | |
368 | // Method 5: Get the name string from image DevicePath\r | |
369 | //\r | |
5d2afd44 | 370 | NameString = ConvertDevicePathToText (DevicePath, TRUE, FALSE);\r |
863986b3 | 371 | if (NameString != NULL) {\r |
6bc4e42f | 372 | StrnCpyS (\r |
ecd58a25 HW |
373 | mGaugeString,\r |
374 | DP_GAUGE_STRING_LENGTH + 1,\r | |
6bc4e42f HW |
375 | NameString,\r |
376 | DP_GAUGE_STRING_LENGTH\r | |
ecd58a25 | 377 | );\r |
863986b3 RN |
378 | FreePool (NameString);\r |
379 | return;\r | |
a2daf8db SZ |
380 | }\r |
381 | }\r | |
c06ad33e | 382 | }\r |
a2daf8db SZ |
383 | \r |
384 | //\r | |
385 | // Method 6: Unknown Driver Name\r | |
386 | //\r | |
387 | StringPtr = HiiGetString (gHiiHandle, STRING_TOKEN (STR_DP_ERROR_NAME), NULL);\r | |
388 | ASSERT (StringPtr != NULL);\r | |
ecd58a25 | 389 | StrCpyS (mGaugeString, DP_GAUGE_STRING_LENGTH + 1, StringPtr);\r |
88359546 | 390 | FreePool (StringPtr);\r |
a2daf8db | 391 | return;\r |
c06ad33e | 392 | }\r |
393 | \r | |
9dd74618 ED |
394 | /** \r |
395 | Calculate the Duration in microseconds.\r | |
396 | \r | |
397 | Duration is multiplied by 1000, instead of Frequency being divided by 1000 or\r | |
398 | multiplying the result by 1000, in order to maintain precision. Since Duration is\r | |
399 | a 64-bit value, multiplying it by 1000 is unlikely to produce an overflow.\r | |
400 | \r | |
401 | The time is calculated as (Duration * 1000) / Timer_Frequency.\r | |
402 | \r | |
403 | @param[in] Duration The event duration in timer ticks.\r | |
404 | \r | |
405 | @return A 64-bit value which is the Elapsed time in microseconds.\r | |
c06ad33e | 406 | **/\r |
407 | UINT64\r | |
408 | DurationInMicroSeconds (\r | |
409 | IN UINT64 Duration\r | |
410 | )\r | |
411 | {\r | |
412 | UINT64 Temp;\r | |
413 | \r | |
414 | Temp = MultU64x32 (Duration, 1000);\r | |
415 | return DivU64x32 (Temp, TimerInfo.Frequency);\r | |
416 | }\r | |
417 | \r | |
9dd74618 ED |
418 | /** \r |
419 | Formatted Print using a Hii Token to reference the localized format string.\r | |
420 | \r | |
421 | @param[in] Token A HII token associated with a localized Unicode string.\r | |
422 | @param[in] ... The variable argument list.\r | |
423 | \r | |
424 | @return The number of characters converted by UnicodeVSPrint().\r | |
425 | \r | |
c06ad33e | 426 | **/\r |
427 | UINTN\r | |
f85acc22 | 428 | EFIAPI\r |
c06ad33e | 429 | PrintToken (\r |
430 | IN UINT16 Token,\r | |
431 | ...\r | |
432 | )\r | |
433 | {\r | |
434 | VA_LIST Marker;\r | |
435 | EFI_STRING StringPtr;\r | |
436 | UINTN Return;\r | |
437 | UINTN BufferSize;\r | |
438 | \r | |
439 | StringPtr = HiiGetString (gHiiHandle, Token, NULL);\r | |
440 | ASSERT (StringPtr != NULL);\r | |
441 | \r | |
442 | VA_START (Marker, Token);\r | |
443 | \r | |
444 | BufferSize = (PcdGet32 (PcdUefiLibMaxPrintBufferSize) + 1) * sizeof (CHAR16);\r | |
445 | \r | |
446 | if (mPrintTokenBuffer == NULL) {\r | |
447 | mPrintTokenBuffer = AllocatePool (BufferSize);\r | |
448 | ASSERT (mPrintTokenBuffer != NULL);\r | |
449 | }\r | |
450 | SetMem( mPrintTokenBuffer, BufferSize, 0);\r | |
451 | \r | |
452 | Return = UnicodeVSPrint (mPrintTokenBuffer, BufferSize, StringPtr, Marker);\r | |
3bbe68a3 | 453 | VA_END (Marker);\r |
454 | \r | |
c06ad33e | 455 | if (Return > 0 && gST->ConOut != NULL) {\r |
456 | gST->ConOut->OutputString (gST->ConOut, mPrintTokenBuffer);\r | |
457 | }\r | |
88359546 | 458 | FreePool (StringPtr);\r |
c06ad33e | 459 | return Return;\r |
460 | }\r | |
461 | \r | |
9dd74618 ED |
462 | /** \r |
463 | Get index of Measurement Record's match in the CumData array.\r | |
464 | \r | |
465 | If the Measurement's Token value matches a Token in one of the CumData\r | |
466 | records, the index of the matching record is returned. The returned\r | |
467 | index is a signed value so that negative values can indicate that\r | |
468 | the Measurement didn't match any entry in the CumData array.\r | |
469 | \r | |
470 | @param[in] Measurement A pointer to a Measurement Record to match against the CumData array.\r | |
471 | \r | |
472 | @retval <0 Token is not in the CumData array.\r | |
473 | @retval >=0 Return value is the index into CumData where Token is found.\r | |
c06ad33e | 474 | **/\r |
475 | INTN\r | |
476 | GetCumulativeItem(\r | |
477 | IN MEASUREMENT_RECORD *Measurement\r | |
478 | )\r | |
479 | {\r | |
480 | INTN Index;\r | |
481 | \r | |
482 | for( Index = 0; Index < (INTN)NumCum; ++Index) {\r | |
483 | if (AsciiStrnCmp (Measurement->Token, CumData[Index].Name, PERF_TOKEN_LENGTH) == 0) {\r | |
484 | return Index; // Exit, we found a match\r | |
485 | }\r | |
486 | }\r | |
487 | // If the for loop exits, Token was not found.\r | |
488 | return -1; // Indicate failure\r | |
489 | }\r |