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/** @file
Performance Library used in Standalone MM phase.
This library instance provides infrastructure for Standalone MM drivers to log performance
data. It consumes the MM PerformanceEx or Performance Protocol to log performance data. If
both MM PerformanceEx and Performance Protocol are not available, it does not log any
performance information.
Copyright (c) 2011 - 2023, Intel Corporation. All rights reserved.<BR>
Copyright (c) Microsoft Corporation.
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <PiMm.h>
#include <Guid/EventGroup.h>
#include "SmmPerformanceLibInternal.h"
/**
The constructor function initializes the Performance Measurement Enable flag.
@param[in] ImageHandle The firmware allocated handle for the EFI image.
@param[in] MmSystemTable A pointer to the MM System Table.
@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
**/
EFI_STATUS
EFIAPI
StandaloneMmPerformanceLibConstructor (
IN EFI_HANDLE ImageHandle,
IN EFI_MM_SYSTEM_TABLE *MmSystemTable
)
{
return RegisterExitBootServicesCallback (&gEfiEventExitBootServicesGuid);
}
/**
The destructor function frees resources allocated by constructor.
@param[in] ImageHandle The firmware allocated handle for the EFI image.
@param[in] MmSystemTable A pointer to the MM System Table.
@retval EFI_SUCCESS The destructor always returns EFI_SUCCESS.
**/
EFI_STATUS
EFIAPI
StandaloneMmPerformanceLibDestructor (
IN EFI_HANDLE ImageHandle,
IN EFI_MM_SYSTEM_TABLE *MmSystemTable
)
{
return UnregisterExitBootServicesCallback (&gEfiEventExitBootServicesGuid);
}
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