/** @file | |
Performance Library | |
This library instance provides infrastructure for DXE phase drivers to log performance | |
data. It consumes PerformanceEx or Performance Protocol published by DxeCorePerformanceLib | |
to log performance data. If both PerformanceEx and Performance Protocol is not available, it does not log any | |
performance information. | |
Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR> | |
This program and the accompanying materials | |
are licensed and made available under the terms and conditions of the BSD License | |
which accompanies this distribution. The full text of the license may be found at | |
http://opensource.org/licenses/bsd-license.php | |
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
**/ | |
#include <PiDxe.h> | |
#include <Guid/Performance.h> | |
#include <Library/PerformanceLib.h> | |
#include <Library/DebugLib.h> | |
#include <Library/UefiBootServicesTableLib.h> | |
#include <Library/PcdLib.h> | |
// | |
// The cached Performance Protocol and PerformanceEx Protocol interface. | |
// | |
PERFORMANCE_PROTOCOL *mPerformance = NULL; | |
PERFORMANCE_EX_PROTOCOL *mPerformanceEx = NULL; | |
/** | |
The function caches the pointers to PerformanceEx protocol and Performance Protocol. | |
The function locates PerformanceEx protocol and Performance Protocol from protocol database. | |
@retval EFI_SUCCESS PerformanceEx protocol or Performance Protocol is successfully located. | |
@retval EFI_NOT_FOUND Both PerformanceEx protocol and Performance Protocol are not located to log performance. | |
**/ | |
EFI_STATUS | |
GetPerformanceProtocol ( | |
VOID | |
) | |
{ | |
EFI_STATUS Status; | |
PERFORMANCE_PROTOCOL *Performance; | |
PERFORMANCE_EX_PROTOCOL *PerformanceEx; | |
if (mPerformanceEx != NULL || mPerformance != NULL) { | |
return EFI_SUCCESS; | |
} | |
Status = gBS->LocateProtocol (&gPerformanceExProtocolGuid, NULL, (VOID **) &PerformanceEx); | |
if (!EFI_ERROR (Status)) { | |
ASSERT (PerformanceEx != NULL); | |
// | |
// Cache PerformanceEx Protocol. | |
// | |
mPerformanceEx = PerformanceEx; | |
return EFI_SUCCESS; | |
} | |
Status = gBS->LocateProtocol (&gPerformanceProtocolGuid, NULL, (VOID **) &Performance); | |
if (!EFI_ERROR (Status)) { | |
ASSERT (Performance != NULL); | |
// | |
// Cache performance protocol. | |
// | |
mPerformance = Performance; | |
return EFI_SUCCESS; | |
} | |
return EFI_NOT_FOUND; | |
} | |
/** | |
Creates a record for the beginning of a performance measurement. | |
Creates a record that contains the Handle, Token, Module and Identifier. | |
If TimeStamp is not zero, then TimeStamp is added to the record as the start time. | |
If TimeStamp is zero, then this function reads the current time stamp | |
and adds that time stamp value to the record as the start time. | |
@param Handle Pointer to environment specific context used | |
to identify the component being measured. | |
@param Token Pointer to a Null-terminated ASCII string | |
that identifies the component being measured. | |
@param Module Pointer to a Null-terminated ASCII string | |
that identifies the module being measured. | |
@param TimeStamp 64-bit time stamp. | |
@param Identifier 32-bit identifier. If the value is 0, the created record | |
is same as the one created by StartPerformanceMeasurement. | |
@retval RETURN_SUCCESS The start of the measurement was recorded. | |
@retval RETURN_OUT_OF_RESOURCES There are not enough resources to record the measurement. | |
**/ | |
RETURN_STATUS | |
EFIAPI | |
StartPerformanceMeasurementEx ( | |
IN CONST VOID *Handle, OPTIONAL | |
IN CONST CHAR8 *Token, OPTIONAL | |
IN CONST CHAR8 *Module, OPTIONAL | |
IN UINT64 TimeStamp, | |
IN UINT32 Identifier | |
) | |
{ | |
EFI_STATUS Status; | |
Status = GetPerformanceProtocol (); | |
if (EFI_ERROR (Status)) { | |
return RETURN_OUT_OF_RESOURCES; | |
} | |
if (mPerformanceEx != NULL) { | |
Status = mPerformanceEx->StartGaugeEx (Handle, Token, Module, TimeStamp, Identifier); | |
} else if (mPerformance != NULL) { | |
Status = mPerformance->StartGauge (Handle, Token, Module, TimeStamp); | |
} else { | |
ASSERT (FALSE); | |
} | |
return (RETURN_STATUS) Status; | |
} | |
/** | |
Fills in the end time of a performance measurement. | |
Looks up the record that matches Handle, Token and Module. | |
If the record can not be found then return RETURN_NOT_FOUND. | |
If the record is found and TimeStamp is not zero, | |
then TimeStamp is added to the record as the end time. | |
If the record is found and TimeStamp is zero, then this function reads | |
the current time stamp and adds that time stamp value to the record as the end time. | |
@param Handle Pointer to environment specific context used | |
to identify the component being measured. | |
@param Token Pointer to a Null-terminated ASCII string | |
that identifies the component being measured. | |
@param Module Pointer to a Null-terminated ASCII string | |
that identifies the module being measured. | |
@param TimeStamp 64-bit time stamp. | |
@param Identifier 32-bit identifier. If the value is 0, the found record | |
is same as the one found by EndPerformanceMeasurement. | |
@retval RETURN_SUCCESS The end of the measurement was recorded. | |
@retval RETURN_NOT_FOUND The specified measurement record could not be found. | |
**/ | |
RETURN_STATUS | |
EFIAPI | |
EndPerformanceMeasurementEx ( | |
IN CONST VOID *Handle, OPTIONAL | |
IN CONST CHAR8 *Token, OPTIONAL | |
IN CONST CHAR8 *Module, OPTIONAL | |
IN UINT64 TimeStamp, | |
IN UINT32 Identifier | |
) | |
{ | |
EFI_STATUS Status; | |
Status = GetPerformanceProtocol (); | |
if (EFI_ERROR (Status)) { | |
return RETURN_NOT_FOUND; | |
} | |
if (mPerformanceEx != NULL) { | |
Status = mPerformanceEx->EndGaugeEx (Handle, Token, Module, TimeStamp, Identifier); | |
} else if (mPerformance != NULL) { | |
Status = mPerformance->EndGauge (Handle, Token, Module, TimeStamp); | |
} else { | |
ASSERT (FALSE); | |
} | |
return (RETURN_STATUS) Status; | |
} | |
/** | |
Attempts to retrieve a performance measurement log entry from the performance measurement log. | |
It can also retrieve the log created by StartPerformanceMeasurement and EndPerformanceMeasurement, | |
and then assign the Identifier with 0. | |
Attempts to retrieve the performance log entry specified by LogEntryKey. If LogEntryKey is | |
zero on entry, then an attempt is made to retrieve the first entry from the performance log, | |
and the key for the second entry in the log is returned. If the performance log is empty, | |
then no entry is retrieved and zero is returned. If LogEntryKey is not zero, then the performance | |
log entry associated with LogEntryKey is retrieved, and the key for the next entry in the log is | |
returned. If LogEntryKey is the key for the last entry in the log, then the last log entry is | |
retrieved and an implementation specific non-zero key value that specifies the end of the performance | |
log is returned. If LogEntryKey is equal this implementation specific non-zero key value, then no entry | |
is retrieved and zero is returned. In the cases where a performance log entry can be returned, | |
the log entry is returned in Handle, Token, Module, StartTimeStamp, EndTimeStamp and Identifier. | |
If LogEntryKey is not a valid log entry key for the performance measurement log, then ASSERT(). | |
If Handle is NULL, then ASSERT(). | |
If Token is NULL, then ASSERT(). | |
If Module is NULL, then ASSERT(). | |
If StartTimeStamp is NULL, then ASSERT(). | |
If EndTimeStamp is NULL, then ASSERT(). | |
If Identifier is NULL, then ASSERT(). | |
@param LogEntryKey On entry, the key of the performance measurement log entry to retrieve. | |
0, then the first performance measurement log entry is retrieved. | |
On exit, the key of the next performance log entry. | |
@param Handle Pointer to environment specific context used to identify the component | |
being measured. | |
@param Token Pointer to a Null-terminated ASCII string that identifies the component | |
being measured. | |
@param Module Pointer to a Null-terminated ASCII string that identifies the module | |
being measured. | |
@param StartTimeStamp Pointer to the 64-bit time stamp that was recorded when the measurement | |
was started. | |
@param EndTimeStamp Pointer to the 64-bit time stamp that was recorded when the measurement | |
was ended. | |
@param Identifier Pointer to the 32-bit identifier that was recorded. | |
@return The key for the next performance log entry (in general case). | |
**/ | |
UINTN | |
EFIAPI | |
GetPerformanceMeasurementEx ( | |
IN UINTN LogEntryKey, | |
OUT CONST VOID **Handle, | |
OUT CONST CHAR8 **Token, | |
OUT CONST CHAR8 **Module, | |
OUT UINT64 *StartTimeStamp, | |
OUT UINT64 *EndTimeStamp, | |
OUT UINT32 *Identifier | |
) | |
{ | |
EFI_STATUS Status; | |
GAUGE_DATA_ENTRY_EX *GaugeData; | |
GaugeData = NULL; | |
ASSERT (Handle != NULL); | |
ASSERT (Token != NULL); | |
ASSERT (Module != NULL); | |
ASSERT (StartTimeStamp != NULL); | |
ASSERT (EndTimeStamp != NULL); | |
ASSERT (Identifier != NULL); | |
Status = GetPerformanceProtocol (); | |
if (EFI_ERROR (Status)) { | |
return 0; | |
} | |
if (mPerformanceEx != NULL) { | |
Status = mPerformanceEx->GetGaugeEx (LogEntryKey++, &GaugeData); | |
} else if (mPerformance != NULL) { | |
Status = mPerformance->GetGauge (LogEntryKey++, (GAUGE_DATA_ENTRY **) &GaugeData); | |
} else { | |
ASSERT (FALSE); | |
return 0; | |
} | |
// | |
// Make sure that LogEntryKey is a valid log entry key, | |
// | |
ASSERT (Status != EFI_INVALID_PARAMETER); | |
if (EFI_ERROR (Status)) { | |
// | |
// The LogEntryKey is the last entry (equals to the total entry number). | |
// | |
return 0; | |
} | |
ASSERT (GaugeData != NULL); | |
*Handle = (VOID *) (UINTN) GaugeData->Handle; | |
*Token = GaugeData->Token; | |
*Module = GaugeData->Module; | |
*StartTimeStamp = GaugeData->StartTimeStamp; | |
*EndTimeStamp = GaugeData->EndTimeStamp; | |
if (mPerformanceEx != NULL) { | |
*Identifier = GaugeData->Identifier; | |
} else { | |
*Identifier = 0; | |
} | |
return LogEntryKey; | |
} | |
/** | |
Creates a record for the beginning of a performance measurement. | |
Creates a record that contains the Handle, Token, and Module. | |
If TimeStamp is not zero, then TimeStamp is added to the record as the start time. | |
If TimeStamp is zero, then this function reads the current time stamp | |
and adds that time stamp value to the record as the start time. | |
@param Handle Pointer to environment specific context used | |
to identify the component being measured. | |
@param Token Pointer to a Null-terminated ASCII string | |
that identifies the component being measured. | |
@param Module Pointer to a Null-terminated ASCII string | |
that identifies the module being measured. | |
@param TimeStamp 64-bit time stamp. | |
@retval RETURN_SUCCESS The start of the measurement was recorded. | |
@retval RETURN_OUT_OF_RESOURCES There are not enough resources to record the measurement. | |
**/ | |
RETURN_STATUS | |
EFIAPI | |
StartPerformanceMeasurement ( | |
IN CONST VOID *Handle, OPTIONAL | |
IN CONST CHAR8 *Token, OPTIONAL | |
IN CONST CHAR8 *Module, OPTIONAL | |
IN UINT64 TimeStamp | |
) | |
{ | |
return StartPerformanceMeasurementEx (Handle, Token, Module, TimeStamp, 0); | |
} | |
/** | |
Fills in the end time of a performance measurement. | |
Looks up the record that matches Handle, Token, and Module. | |
If the record can not be found then return RETURN_NOT_FOUND. | |
If the record is found and TimeStamp is not zero, | |
then TimeStamp is added to the record as the end time. | |
If the record is found and TimeStamp is zero, then this function reads | |
the current time stamp and adds that time stamp value to the record as the end time. | |
@param Handle Pointer to environment specific context used | |
to identify the component being measured. | |
@param Token Pointer to a Null-terminated ASCII string | |
that identifies the component being measured. | |
@param Module Pointer to a Null-terminated ASCII string | |
that identifies the module being measured. | |
@param TimeStamp 64-bit time stamp. | |
@retval RETURN_SUCCESS The end of the measurement was recorded. | |
@retval RETURN_NOT_FOUND The specified measurement record could not be found. | |
**/ | |
RETURN_STATUS | |
EFIAPI | |
EndPerformanceMeasurement ( | |
IN CONST VOID *Handle, OPTIONAL | |
IN CONST CHAR8 *Token, OPTIONAL | |
IN CONST CHAR8 *Module, OPTIONAL | |
IN UINT64 TimeStamp | |
) | |
{ | |
return EndPerformanceMeasurementEx (Handle, Token, Module, TimeStamp, 0); | |
} | |
/** | |
Attempts to retrieve a performance measurement log entry from the performance measurement log. | |
It can also retrieve the log created by StartPerformanceMeasurementEx and EndPerformanceMeasurementEx, | |
and then eliminate the Identifier. | |
Attempts to retrieve the performance log entry specified by LogEntryKey. If LogEntryKey is | |
zero on entry, then an attempt is made to retrieve the first entry from the performance log, | |
and the key for the second entry in the log is returned. If the performance log is empty, | |
then no entry is retrieved and zero is returned. If LogEntryKey is not zero, then the performance | |
log entry associated with LogEntryKey is retrieved, and the key for the next entry in the log is | |
returned. If LogEntryKey is the key for the last entry in the log, then the last log entry is | |
retrieved and an implementation specific non-zero key value that specifies the end of the performance | |
log is returned. If LogEntryKey is equal this implementation specific non-zero key value, then no entry | |
is retrieved and zero is returned. In the cases where a performance log entry can be returned, | |
the log entry is returned in Handle, Token, Module, StartTimeStamp, and EndTimeStamp. | |
If LogEntryKey is not a valid log entry key for the performance measurement log, then ASSERT(). | |
If Handle is NULL, then ASSERT(). | |
If Token is NULL, then ASSERT(). | |
If Module is NULL, then ASSERT(). | |
If StartTimeStamp is NULL, then ASSERT(). | |
If EndTimeStamp is NULL, then ASSERT(). | |
@param LogEntryKey On entry, the key of the performance measurement log entry to retrieve. | |
0, then the first performance measurement log entry is retrieved. | |
On exit, the key of the next performance log entry. | |
@param Handle Pointer to environment specific context used to identify the component | |
being measured. | |
@param Token Pointer to a Null-terminated ASCII string that identifies the component | |
being measured. | |
@param Module Pointer to a Null-terminated ASCII string that identifies the module | |
being measured. | |
@param StartTimeStamp Pointer to the 64-bit time stamp that was recorded when the measurement | |
was started. | |
@param EndTimeStamp Pointer to the 64-bit time stamp that was recorded when the measurement | |
was ended. | |
@return The key for the next performance log entry (in general case). | |
**/ | |
UINTN | |
EFIAPI | |
GetPerformanceMeasurement ( | |
IN UINTN LogEntryKey, | |
OUT CONST VOID **Handle, | |
OUT CONST CHAR8 **Token, | |
OUT CONST CHAR8 **Module, | |
OUT UINT64 *StartTimeStamp, | |
OUT UINT64 *EndTimeStamp | |
) | |
{ | |
UINT32 Identifier; | |
return GetPerformanceMeasurementEx (LogEntryKey, Handle, Token, Module, StartTimeStamp, EndTimeStamp, &Identifier); | |
} | |
/** | |
Returns TRUE if the performance measurement macros are enabled. | |
This function returns TRUE if the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of | |
PcdPerformanceLibraryPropertyMask is set. Otherwise FALSE is returned. | |
@retval TRUE The PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of | |
PcdPerformanceLibraryPropertyMask is set. | |
@retval FALSE The PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of | |
PcdPerformanceLibraryPropertyMask is clear. | |
**/ | |
BOOLEAN | |
EFIAPI | |
PerformanceMeasurementEnabled ( | |
VOID | |
) | |
{ | |
return (BOOLEAN) ((PcdGet8(PcdPerformanceLibraryPropertyMask) & PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED) != 0); | |
} |