+++ /dev/null
-/*++\r
-\r
-Copyright (c) 2006, Intel Corporation \r
-All rights reserved. This program and the accompanying materials \r
-are licensed and made available under the terms and conditions of the BSD License \r
-which accompanies this distribution. The full text of the license may be found at \r
-http://opensource.org/licenses/bsd-license.php \r
- \r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
-\r
-Module Name:\r
-\r
- DxePerformanceLib.c\r
-\r
-Abstract:\r
-\r
- Performance Library\r
-\r
---*/\r
-\r
-STATIC PERFORMANCE_PROTOCOL *mPerformance = NULL;\r
-\r
-/**\r
- The constructor function caches the pointer to Performance protocol.\r
- \r
- The constructor function locates Performance protocol from protocol database.\r
- It will ASSERT() if that operation fails and it will always return EFI_SUCCESS. \r
-\r
- @retval EFI_SUCCESS Performance protocol is successfully located.\r
- @retval Other Performance protocol is not located to log performance. \r
-\r
-**/\r
-STATIC\r
-EFI_STATUS\r
-GetPerformanceProtocol (\r
- VOID\r
- )\r
-{\r
- EFI_STATUS Status;\r
- PERFORMANCE_PROTOCOL *Performance;\r
-\r
- if (mPerformance != NULL) {\r
- return EFI_SUCCESS;\r
- }\r
-\r
- Status = gBS->LocateProtocol (&gPerformanceProtocolGuid, NULL, (VOID **) &Performance);\r
- if (!EFI_ERROR (Status)) {\r
- ASSERT (Performance != NULL);\r
- //\r
- // Cache performance protocol.\r
- //\r
- mPerformance = Performance;\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- Creates a record for the beginning of a performance measurement. \r
- \r
- Creates a record that contains the Handle, Token, and Module.\r
- If TimeStamp is not zero, then TimeStamp is added to the record as the start time.\r
- If TimeStamp is zero, then this function reads the current time stamp\r
- and adds that time stamp value to the record as the start time.\r
-\r
- @param Handle Pointer to environment specific context used\r
- to identify the component being measured.\r
- @param Token Pointer to a Null-terminated ASCII string\r
- that identifies the component being measured.\r
- @param Module Pointer to a Null-terminated ASCII string\r
- that identifies the module being measured.\r
- @param TimeStamp 64-bit time stamp.\r
-\r
- @retval RETURN_SUCCESS The start of the measurement was recorded.\r
- @retval RETURN_OUT_OF_RESOURCES There are not enough resources to record the measurement.\r
-\r
-**/\r
-RETURN_STATUS\r
-EFIAPI\r
-StartPerformanceMeasurement (\r
- IN CONST VOID *Handle, OPTIONAL\r
- IN CONST CHAR8 *Token, OPTIONAL\r
- IN CONST CHAR8 *Module, OPTIONAL\r
- IN UINT64 TimeStamp\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- Status = GetPerformanceProtocol ();\r
- if (EFI_ERROR (Status)) {\r
- return RETURN_OUT_OF_RESOURCES;\r
- }\r
- \r
- Status = mPerformance->StartGauge (Handle, Token, Module, TimeStamp);\r
- \r
- return (RETURN_STATUS) Status;\r
-}\r
-\r
-/**\r
- Fills in the end time of a performance measurement. \r
- \r
- Looks up the record that matches Handle, Token, and Module.\r
- If the record can not be found then return RETURN_NOT_FOUND.\r
- If the record is found and TimeStamp is not zero,\r
- then TimeStamp is added to the record as the end time.\r
- If the record is found and TimeStamp is zero, then this function reads\r
- the current time stamp and adds that time stamp value to the record as the end time.\r
- If this function is called multiple times for the same record, then the end time is overwritten.\r
-\r
- @param Handle Pointer to environment specific context used\r
- to identify the component being measured.\r
- @param Token Pointer to a Null-terminated ASCII string\r
- that identifies the component being measured.\r
- @param Module Pointer to a Null-terminated ASCII string\r
- that identifies the module being measured.\r
- @param TimeStamp 64-bit time stamp.\r
-\r
- @retval RETURN_SUCCESS The end of the measurement was recorded.\r
- @retval RETURN_NOT_FOUND The specified measurement record could not be found.\r
-\r
-**/\r
-RETURN_STATUS\r
-EFIAPI\r
-EndPerformanceMeasurement (\r
- IN CONST VOID *Handle, OPTIONAL\r
- IN CONST CHAR8 *Token, OPTIONAL\r
- IN CONST CHAR8 *Module, OPTIONAL\r
- IN UINT64 TimeStamp\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- Status = GetPerformanceProtocol ();\r
- if (EFI_ERROR (Status)) {\r
- return RETURN_NOT_FOUND;\r
- }\r
-\r
- Status = mPerformance->EndGauge (Handle, Token, Module, TimeStamp);\r
-\r
- return (RETURN_STATUS) Status;\r
-}\r
-\r
-/**\r
- Attempts to retrieve a performance measurement log entry from the performance measurement log. \r
- \r
- Attempts to retrieve the performance log entry specified by LogEntryKey. If LogEntryKey is\r
- zero on entry, then an attempt is made to retrieve the first entry from the performance log,\r
- and the key for the second entry in the log is returned. If the performance log is empty,\r
- then no entry is retrieved and zero is returned. If LogEntryKey is not zero, then the performance\r
- log entry associated with LogEntryKey is retrieved, and the key for the next entry in the log is\r
- returned. If LogEntryKey is the key for the last entry in the log, then the last log entry is\r
- retrieved and an implementation specific non-zero key value that specifies the end of the performance\r
- log is returned. If LogEntryKey is equal this implementation specific non-zero key value, then no entry\r
- is retrieved and zero is returned. In the cases where a performance log entry can be returned,\r
- the log entry is returned in Handle, Token, Module, StartTimeStamp, and EndTimeStamp.\r
- If LogEntryKey is not a valid log entry key for the performance measurement log, then ASSERT().\r
- If Handle is NULL, then ASSERT().\r
- If Token is NULL, then ASSERT().\r
- If Module is NULL, then ASSERT().\r
- If StartTimeStamp is NULL, then ASSERT().\r
- If EndTimeStamp is NULL, then ASSERT().\r
-\r
- @param LogEntryKey On entry, the key of the performance measurement log entry to retrieve.\r
- 0, then the first performance measurement log entry is retrieved.\r
- On exit, the key of the next performance lof entry entry.\r
- @param Handle Pointer to environment specific context used to identify the component\r
- being measured. \r
- @param Token Pointer to a Null-terminated ASCII string that identifies the component\r
- being measured. \r
- @param Module Pointer to a Null-terminated ASCII string that identifies the module\r
- being measured.\r
- @param StartTimeStamp Pointer to the 64-bit time stamp that was recorded when the measurement\r
- was started.\r
- @param EndTimeStamp Pointer to the 64-bit time stamp that was recorded when the measurement\r
- was ended.\r
-\r
- @return The key for the next performance log entry (in general case).\r
-\r
-**/\r
-UINTN\r
-EFIAPI\r
-GetPerformanceMeasurement (\r
- IN UINTN LogEntryKey, \r
- OUT CONST VOID **Handle,\r
- OUT CONST CHAR8 **Token,\r
- OUT CONST CHAR8 **Module,\r
- OUT UINT64 *StartTimeStamp,\r
- OUT UINT64 *EndTimeStamp\r
- )\r
-{\r
- EFI_STATUS Status;\r
- GAUGE_DATA_ENTRY *GaugeData;\r
-\r
- ASSERT (Handle != NULL);\r
- ASSERT (Token != NULL);\r
- ASSERT (Module != NULL);\r
- ASSERT (StartTimeStamp != NULL);\r
- ASSERT (EndTimeStamp != NULL);\r
-\r
- Status = GetPerformanceProtocol ();\r
- if (EFI_ERROR (Status)) {\r
- return 0;\r
- }\r
-\r
- Status = mPerformance->GetGauge (LogEntryKey++, &GaugeData);\r
- \r
- //\r
- // Make sure that LogEntryKey is a valid log entry key,\r
- //\r
- ASSERT (Status != EFI_INVALID_PARAMETER);\r
-\r
- if (EFI_ERROR (Status)) {\r
- //\r
- // The LogEntryKey is the last entry (equals to the total entry number).\r
- //\r
- return 0;\r
- }\r
-\r
- ASSERT (GaugeData != NULL);\r
-\r
- *Handle = (VOID *) (UINTN) GaugeData->Handle;\r
- *Token = GaugeData->Token;\r
- *Module = GaugeData->Module;\r
- *StartTimeStamp = GaugeData->StartTimeStamp;\r
- *EndTimeStamp = GaugeData->EndTimeStamp;\r
-\r
- return LogEntryKey; \r
-}\r
-\r
-/**\r
- Returns TRUE if the performance measurement macros are enabled. \r
- \r
- This function returns TRUE if the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r
- PcdPerformanceLibraryPropertyMask is set. Otherwise FALSE is returned.\r
-\r
- @retval TRUE The PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r
- PcdPerformanceLibraryPropertyMask is set.\r
- @retval FALSE The PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r
- PcdPerformanceLibraryPropertyMask is clear.\r
-\r
-**/\r
-BOOLEAN\r
-EFIAPI\r
-PerformanceMeasurementEnabled (\r
- VOID\r
- )\r
-{\r
- return (BOOLEAN) ((PcdGet8(PcdPerformanceLibraryPropertyMask) & PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED) != 0);\r
-}\r
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