+++ /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
- DxeCorePerformance.c\r
-\r
-Abstract:\r
-\r
- Support for measurement of DXE performance \r
-\r
---*/\r
-\r
-//\r
-// Interface declarations for Performance Protocol.\r
-//\r
-/**\r
- Adds a record at the end of the performance measurement log\r
- that records the start time of a performance measurement.\r
-\r
- Adds a record to the end of the performance measurement log\r
- that contains the Handle, Token, and Module.\r
- The end time of the new record must be set to zero.\r
- If TimeStamp is not zero, then TimeStamp is used to fill in the start time in the record.\r
- If TimeStamp is zero, the start time in the record is filled in with the value\r
- read from the current time stamp. \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 EFI_SUCCESS The data was read correctly from the device.\r
- @retval EFI_OUT_OF_RESOURCES There are not enough resources to record the measurement.\r
-\r
-**/\r
-STATIC\r
-EFI_STATUS\r
-EFIAPI\r
-StartGauge (\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
-/**\r
- Searches the performance measurement log from the beginning of the log\r
- for the first matching record that contains a zero end time and fills in a valid end time. \r
- \r
- Searches the performance measurement log from the beginning of the log\r
- for the first record that matches Handle, Token, and Module and has an end time value of zero.\r
- If the record can not be found then return EFI_NOT_FOUND.\r
- If the record is found and TimeStamp is not zero,\r
- then the end time in the record is filled in with the value specified by TimeStamp.\r
- If the record is found and TimeStamp is zero, then the end time in the matching record\r
- is filled in with the current time stamp value.\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 EFI_SUCCESS The end of the measurement was recorded.\r
- @retval EFI_NOT_FOUND The specified measurement record could not be found.\r
-\r
-**/\r
-STATIC\r
-EFI_STATUS\r
-EFIAPI\r
-EndGauge (\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
-/**\r
- Retrieves a previously logged performance measurement. \r
- \r
- Retrieves the performance log entry from the performance log specified by LogEntryKey.\r
- If it stands for a valid entry, then EFI_SUCCESS is returned and\r
- GaugeDataEntry stores the pointer to that entry.\r
-\r
- @param LogEntryKey The key for the previous performance measurement log entry.\r
- If 0, then the first performance measurement log entry is retrieved.\r
- @param GaugeDataEntry The indirect pointer to the gauge data entry specified by LogEntryKey\r
- if the retrieval is successful.\r
-\r
- @retval EFI_SUCCESS The GuageDataEntry is successfuly found based on LogEntryKey.\r
- @retval EFI_NOT_FOUND The LogEntryKey is the last entry (equals to the total entry number).\r
- @retval EFI_INVALIDE_PARAMETER The LogEntryKey is not a valid entry (greater than the total entry number).\r
- @retval EFI_INVALIDE_PARAMETER GaugeDataEntry is NULL. \r
-\r
-**/\r
-STATIC\r
-EFI_STATUS\r
-EFIAPI\r
-GetGauge (\r
- IN UINTN LogEntryKey,\r
- OUT GAUGE_DATA_ENTRY **GaugeDataEntry\r
- );\r
-\r
-//\r
-// Definition for global variables.\r
-//\r
-STATIC GAUGE_DATA_HEADER *mGaugeData;\r
-STATIC UINT32 mMaxGaugeRecords;\r
-\r
-EFI_HANDLE mHandle = NULL;\r
-PERFORMANCE_PROTOCOL mPerformanceInterface = {\r
- StartGauge,\r
- EndGauge,\r
- GetGauge\r
- };\r
-\r
-\r
-/**\r
- Searches in the gauge array with keyword Handle, Token and Module.\r
-\r
- This internal function searches for the gauge entry in the gauge array.\r
- If there is an entry that exactly matches the given key word triple\r
- and its end time stamp is zero, then the index of that gauge entry is returned;\r
- otherwise, the the number of gauge entries in the array is returned. \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
-\r
- @retval The index of gauge entry in the array.\r
-\r
-**/\r
-STATIC\r
-UINT32\r
-InternalSearchForGaugeEntry (\r
- IN CONST VOID *Handle, OPTIONAL\r
- IN CONST CHAR8 *Token, OPTIONAL\r
- IN CONST CHAR8 *Module OPTIONAL\r
- )\r
-{\r
- UINT32 Index;\r
- UINT32 NumberOfEntries;\r
- GAUGE_DATA_ENTRY *GaugeEntryArray;\r
-\r
- if (Token == NULL) {\r
- Token = "";\r
- }\r
- if (Module == NULL) {\r
- Module = "";\r
- }\r
-\r
- NumberOfEntries = mGaugeData->NumberOfEntries;\r
- GaugeEntryArray = (GAUGE_DATA_ENTRY *) (mGaugeData + 1);\r
-\r
- for (Index = 0; Index < NumberOfEntries; Index++) {\r
- if ((GaugeEntryArray[Index].Handle == (EFI_PHYSICAL_ADDRESS) (UINTN) Handle) &&\r
- AsciiStrnCmp (GaugeEntryArray[Index].Token, Token, PEI_PERFORMANCE_STRING_LENGTH) == 0 &&\r
- AsciiStrnCmp (GaugeEntryArray[Index].Module, Module, PEI_PERFORMANCE_STRING_LENGTH) == 0 &&\r
- GaugeEntryArray[Index].EndTimeStamp == 0\r
- ) {\r
- break;\r
- }\r
- }\r
- \r
- return Index;\r
-}\r
-\r
-/**\r
- Adds a record at the end of the performance measurement log\r
- that records the start time of a performance measurement.\r
-\r
- Adds a record to the end of the performance measurement log\r
- that contains the Handle, Token, and Module.\r
- The end time of the new record must be set to zero.\r
- If TimeStamp is not zero, then TimeStamp is used to fill in the start time in the record.\r
- If TimeStamp is zero, the start time in the record is filled in with the value\r
- read from the current time stamp. \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 EFI_SUCCESS The data was read correctly from the device.\r
- @retval EFI_OUT_OF_RESOURCES There are not enough resources to record the measurement.\r
-\r
-**/\r
-STATIC\r
-EFI_STATUS\r
-EFIAPI\r
-StartGauge (\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
- GAUGE_DATA_ENTRY *GaugeEntryArray;\r
- UINTN GaugeDataSize;\r
- UINTN OldGaugeDataSize;\r
- GAUGE_DATA_HEADER *OldGaugeData;\r
- UINT32 Index;\r
-\r
- Index = mGaugeData->NumberOfEntries;\r
- if (Index >= mMaxGaugeRecords) {\r
- //\r
- // Try to enlarge the scale of gauge arrary.\r
- //\r
- OldGaugeData = mGaugeData;\r
- OldGaugeDataSize = sizeof (GAUGE_DATA_HEADER) + sizeof (GAUGE_DATA_ENTRY) * mMaxGaugeRecords;\r
-\r
- mMaxGaugeRecords *= 2;\r
- GaugeDataSize = sizeof (GAUGE_DATA_HEADER) + sizeof (GAUGE_DATA_ENTRY) * mMaxGaugeRecords;\r
- \r
- mGaugeData = AllocateZeroPool (GaugeDataSize);\r
- if (mGaugeData == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
- //\r
- // Initialize new data arry and migrate old data one. \r
- //\r
- mGaugeData = CopyMem (mGaugeData, OldGaugeData, OldGaugeDataSize);\r
- \r
- FreePool (OldGaugeData); \r
- }\r
- \r
- GaugeEntryArray = (GAUGE_DATA_ENTRY *) (mGaugeData + 1);\r
- GaugeEntryArray[Index].Handle = (EFI_PHYSICAL_ADDRESS) (UINTN) Handle;\r
-\r
- if (Token != NULL) {\r
- AsciiStrnCpy (GaugeEntryArray[Index].Token, Token, DXE_PERFORMANCE_STRING_LENGTH);\r
- }\r
- if (Module != NULL) {\r
- AsciiStrnCpy (GaugeEntryArray[Index].Module, Module, DXE_PERFORMANCE_STRING_LENGTH);\r
- }\r
-\r
- if (TimeStamp == 0) {\r
- TimeStamp = GetPerformanceCounter ();\r
- }\r
- GaugeEntryArray[Index].StartTimeStamp = TimeStamp;\r
-\r
- mGaugeData->NumberOfEntries++;\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Searches the performance measurement log from the beginning of the log\r
- for the first matching record that contains a zero end time and fills in a valid end time. \r
- \r
- Searches the performance measurement log from the beginning of the log\r
- for the first record that matches Handle, Token, and Module and has an end time value of zero.\r
- If the record can not be found then return EFI_NOT_FOUND.\r
- If the record is found and TimeStamp is not zero,\r
- then the end time in the record is filled in with the value specified by TimeStamp.\r
- If the record is found and TimeStamp is zero, then the end time in the matching record\r
- is filled in with the current time stamp value.\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 EFI_SUCCESS The end of the measurement was recorded.\r
- @retval EFI_NOT_FOUND The specified measurement record could not be found.\r
-\r
-**/\r
-STATIC\r
-EFI_STATUS\r
-EFIAPI\r
-EndGauge (\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
- GAUGE_DATA_ENTRY *GaugeEntryArray;\r
- UINT32 Index;\r
-\r
- if (TimeStamp == 0) {\r
- TimeStamp = GetPerformanceCounter ();\r
- }\r
-\r
- Index = InternalSearchForGaugeEntry (Handle, Token, Module);\r
- if (Index >= mGaugeData->NumberOfEntries) {\r
- return EFI_NOT_FOUND;\r
- }\r
- GaugeEntryArray = (GAUGE_DATA_ENTRY *) (mGaugeData + 1);\r
- GaugeEntryArray[Index].EndTimeStamp = TimeStamp;\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Retrieves a previously logged performance measurement. \r
- \r
- Retrieves the performance log entry from the performance log specified by LogEntryKey.\r
- If it stands for a valid entry, then EFI_SUCCESS is returned and\r
- GaugeDataEntry stores the pointer to that entry.\r
-\r
- @param LogEntryKey The key for the previous performance measurement log entry.\r
- If 0, then the first performance measurement log entry is retrieved.\r
- @param GaugeDataEntry The indirect pointer to the gauge data entry specified by LogEntryKey\r
- if the retrieval is successful.\r
-\r
- @retval EFI_SUCCESS The GuageDataEntry is successfuly found based on LogEntryKey.\r
- @retval EFI_NOT_FOUND The LogEntryKey is the last entry (equals to the total entry number).\r
- @retval EFI_INVALIDE_PARAMETER The LogEntryKey is not a valid entry (greater than the total entry number).\r
- @retval EFI_INVALIDE_PARAMETER GaugeDataEntry is NULL. \r
-\r
-**/\r
-STATIC\r
-EFI_STATUS\r
-EFIAPI\r
-GetGauge (\r
- IN UINTN LogEntryKey,\r
- OUT GAUGE_DATA_ENTRY **GaugeDataEntry\r
- )\r
-{\r
- UINTN NumberOfEntries;\r
- GAUGE_DATA_ENTRY *LogEntryArray;\r
-\r
- NumberOfEntries = (UINTN) (mGaugeData->NumberOfEntries);\r
- if (LogEntryKey > NumberOfEntries) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- if (LogEntryKey == NumberOfEntries) {\r
- return EFI_NOT_FOUND;\r
- }\r
- \r
- LogEntryArray = (GAUGE_DATA_ENTRY *) (mGaugeData + 1);\r
- \r
- if (GaugeDataEntry == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- *GaugeDataEntry = &LogEntryArray[LogEntryKey];\r
- \r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Dumps all the PEI performance log to DXE performance gauge array.\r
- \r
- This internal function dumps all the PEI performance log to the DXE performance gauge array.\r
- It retrieves the optional GUID HOB for PEI performance and then saves the performance data\r
- to DXE performance data structures.\r
-\r
-**/\r
-STATIC\r
-VOID\r
-InternalGetPeiPerformance (\r
- VOID\r
- )\r
-{\r
- EFI_HOB_GUID_TYPE *GuidHob;\r
- PEI_PERFORMANCE_LOG_HEADER *LogHob;\r
- PEI_PERFORMANCE_LOG_ENTRY *LogEntryArray;\r
- GAUGE_DATA_ENTRY *GaugeEntryArray;\r
- UINT32 Index;\r
- UINT32 NumberOfEntries;\r
-\r
- NumberOfEntries = 0;\r
- GaugeEntryArray = (GAUGE_DATA_ENTRY *) (mGaugeData + 1);\r
-\r
- //\r
- // Dump PEI Log Entries to DXE Guage Data structure. \r
- //\r
- GuidHob = GetFirstGuidHob (&gPeiPerformanceHobGuid);\r
- if (GuidHob != NULL) {\r
- LogHob = GET_GUID_HOB_DATA (GuidHob);\r
- LogEntryArray = (PEI_PERFORMANCE_LOG_ENTRY *) (LogHob + 1);\r
- GaugeEntryArray = (GAUGE_DATA_ENTRY *) (mGaugeData + 1);\r
-\r
- NumberOfEntries = LogHob->NumberOfEntries;\r
- for (Index = 0; Index < NumberOfEntries; Index++) {\r
- GaugeEntryArray[Index].Handle = LogEntryArray[Index].Handle;\r
- AsciiStrnCpy (GaugeEntryArray[Index].Token, LogEntryArray[Index].Token, DXE_PERFORMANCE_STRING_LENGTH);\r
- AsciiStrnCpy (GaugeEntryArray[Index].Module, LogEntryArray[Index].Module, DXE_PERFORMANCE_STRING_LENGTH);\r
- GaugeEntryArray[Index].StartTimeStamp = LogEntryArray[Index].StartTimeStamp;\r
- GaugeEntryArray[Index].EndTimeStamp = LogEntryArray[Index].EndTimeStamp;\r
- }\r
- }\r
- mGaugeData->NumberOfEntries = NumberOfEntries;\r
-}\r
-\r
-/**\r
- The constructor function initializes Performance infrastructure for DXE phase.\r
- \r
- The constructor function publishes Performance protocol, allocates memory to log DXE performance\r
- and merges PEI performance data to DXE performance log.\r
- It will ASSERT() if one of these operations fails and it will always return EFI_SUCCESS. \r
-\r
- @param ImageHandle The firmware allocated handle for the EFI image.\r
- @param SystemTable A pointer to the EFI System Table.\r
- \r
- @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-DxeCorePerformanceLibConstructor (\r
- IN EFI_HANDLE ImageHandle,\r
- IN EFI_SYSTEM_TABLE *SystemTable\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- if (!PerformanceMeasurementEnabled ()) {\r
- //\r
- // Do not initialize performance infrastructure if not required.\r
- //\r
- return EFI_SUCCESS;\r
- }\r
- //\r
- // Install the protocol interfaces.\r
- //\r
- Status = gBS->InstallProtocolInterface (\r
- &mHandle,\r
- &gPerformanceProtocolGuid,\r
- EFI_NATIVE_INTERFACE,\r
- &mPerformanceInterface\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- mMaxGaugeRecords = INIT_DXE_GAUGE_DATA_ENTRIES + PcdGet8 (PcdMaxPeiPerformanceLogEntries);\r
-\r
- mGaugeData = AllocateZeroPool (sizeof (GAUGE_DATA_HEADER) + (sizeof (GAUGE_DATA_ENTRY) * mMaxGaugeRecords));\r
- ASSERT (mGaugeData != NULL);\r
-\r
- InternalGetPeiPerformance ();\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- Adds a record at the end of the performance measurement log\r
- that records the start time of a performance measurement.\r
-\r
- Adds a record to the end of the performance measurement log\r
- that contains the Handle, Token, and Module.\r
- The end time of the new record must be set to zero.\r
- If TimeStamp is not zero, then TimeStamp is used to fill in the start time in the record.\r
- If TimeStamp is zero, the start time in the record is filled in with the value\r
- read from the current time stamp. \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 = StartGauge (Handle, Token, Module, TimeStamp);\r
- return (RETURN_STATUS) Status;\r
-}\r
-\r
-/**\r
- Searches the performance measurement log from the beginning of the log\r
- for the first matching record that contains a zero end time and fills in a valid end time. \r
- \r
- Searches the performance measurement log from the beginning of the log\r
- for the first record that matches Handle, Token, and Module and has an end time value of zero.\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 the end time in the record is filled in with the value specified by TimeStamp.\r
- If the record is found and TimeStamp is zero, then the end time in the matching record\r
- is filled in with the current time stamp value.\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 = EndGauge (Handle, Token, Module, TimeStamp);\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 = 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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