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Replace traditional `#ifndef`/`#define`/`#endif` include guards with
`#pragma` once.
`#pragma once` is a widely supported preprocessor directive that
prevents header files from being included multiple times. It is
supported by all toolchains used to build edk2: GCC, Clang/LLVM, and
MSVC.
Compared to macro-based include guards, `#pragma once`:
- Eliminates the risk of macro name collisions or copy/paste errors
where two headers inadvertently use the same guard macro.
- Eliminate inconsistency in the way include guard macros are named
(e.g., some files use `__FILE_H__`, others use `FILE_H_`, etc.).
- Reduces boilerplate (three lines replaced by one).
- Avoids polluting the macro namespace with guard symbols.
- Can improve build times as the preprocessor can skip re-opening the
file entirely, rather than re-reading it to find the matching
`#endif` ("multiple-include optimization").
- Note that some compilers may already optimize traditional include
guards, by recognzining the idiomatic pattern.
This change is made acknowledging that overall portability of the
code will technically be reduced, as `#pragma once` is not part of the
C/C++ standards.
However, this is considered acceptable given:
1. edk2 already defines a subset of supported compilers in
BaseTools/Conf/tools_def.template, all of which have supported
`#pragma once` for over two decades.
2. There have been concerns raised to the project about inconsistent
include guard naming and potential macro collisions.
Approximate compiler support dates:
- MSVC: Supported since Visual C++ 4.2 (1996)
- GCC: Supported since 3.4 (2004)
(http://gnu.ist.utl.pt/software/gcc/gcc-3.4/changes.html)
- Clang (LLVM based): Since initial release in 2007
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
141 lines
4.8 KiB
C
141 lines
4.8 KiB
C
/** @file
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Internal include file for Status Code Handler Driver.
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Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
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(C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#pragma once
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#include <Protocol/MmReportStatusCodeHandler.h>
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#include <Guid/MemoryStatusCodeRecord.h>
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#include <Guid/StatusCodeDataTypeId.h>
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#include <Guid/StatusCodeDataTypeDebug.h>
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#include <Library/SynchronizationLib.h>
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#include <Library/DebugLib.h>
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#include <Library/ReportStatusCodeLib.h>
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#include <Library/PrintLib.h>
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#include <Library/PcdLib.h>
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#include <Library/UefiDriverEntryPoint.h>
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#include <Library/MmServicesTableLib.h>
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#include <Library/SerialPortLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/BaseMemoryLib.h>
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//
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// Define the maximum message length
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//
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#define MAX_DEBUG_MESSAGE_LENGTH 0x100
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extern RUNTIME_MEMORY_STATUSCODE_HEADER *mMmMemoryStatusCodeTable;
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/**
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Locates Serial I/O Protocol as initialization for serial status code worker.
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@retval EFI_SUCCESS Serial I/O Protocol is successfully located.
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**/
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EFI_STATUS
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EfiSerialStatusCodeInitializeWorker (
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VOID
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);
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/**
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Convert status code value and extended data to readable ASCII string, send string to serial I/O device.
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@param CodeType Indicates the type of status code being reported.
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@param Value Describes the current status of a hardware or software entity.
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This included information about the class and subclass that is used to
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classify the entity as well as an operation.
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@param Instance The enumeration of a hardware or software entity within
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the system. Valid instance numbers start with 1.
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@param CallerId This optional parameter may be used to identify the caller.
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This parameter allows the status code driver to apply different rules to
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different callers.
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@param Data This optional parameter may be used to pass additional data.
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@retval EFI_SUCCESS Status code reported to serial I/O successfully.
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@retval EFI_DEVICE_ERROR EFI serial device cannot work after ExitBootService() is called.
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@retval EFI_DEVICE_ERROR EFI serial device cannot work with TPL higher than TPL_CALLBACK.
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**/
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EFI_STATUS
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EFIAPI
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SerialStatusCodeReportWorker (
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IN EFI_STATUS_CODE_TYPE CodeType,
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IN EFI_STATUS_CODE_VALUE Value,
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IN UINT32 Instance,
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IN EFI_GUID *CallerId,
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IN EFI_STATUS_CODE_DATA *Data OPTIONAL
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);
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/**
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Initialize runtime memory status code table as initialization for runtime memory status code worker
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@retval EFI_SUCCESS Runtime memory status code table successfully initialized.
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**/
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EFI_STATUS
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MemoryStatusCodeInitializeWorker (
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VOID
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);
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/**
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Report status code into runtime memory. If the runtime pool is full, roll back to the
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first record and overwrite it.
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@param CodeType Indicates the type of status code being reported.
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@param Value Describes the current status of a hardware or software entity.
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This included information about the class and subclass that is used to
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classify the entity as well as an operation.
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@param Instance The enumeration of a hardware or software entity within
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the system. Valid instance numbers start with 1.
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@param CallerId This optional parameter may be used to identify the caller.
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This parameter allows the status code driver to apply different rules to
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different callers.
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@param Data This optional parameter may be used to pass additional data.
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@retval EFI_SUCCESS Status code successfully recorded in runtime memory status code table.
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**/
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EFI_STATUS
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EFIAPI
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MemoryStatusCodeReportWorker (
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IN EFI_STATUS_CODE_TYPE CodeType,
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IN EFI_STATUS_CODE_VALUE Value,
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IN UINT32 Instance,
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IN EFI_GUID *CallerId,
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IN EFI_STATUS_CODE_DATA *Data OPTIONAL
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);
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/**
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Entry point of Common MM Status Code Driver.
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This function is the entry point of MM Status Code Driver.
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@retval EFI_SUCCESS The entry point is executed successfully.
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**/
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EFI_STATUS
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StatusCodeHandlerCommonEntry (
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VOID
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);
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/**
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Check if the status code is using serial port.
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This function determines whether the status code reporting mechanism
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is configured to use the serial port.
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@retval TRUE Status code is using the serial port.
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@retval FALSE Status code is not using the serial port.
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**/
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BOOLEAN
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IsStatusCodeUsingSerialPort (
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VOID
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);
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