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https://github.com/tianocore/edk2
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648ea00a19
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>
65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
/** @file
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Provide FSP wrapper API test related function.
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Copyright (c) 2016, Intel Corporation. All rights reserved.<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 <PiPei.h>
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/**
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Test the output of FSP API - FspMemoryInit.
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@param[in] FspmUpdDataPtr Address pointer to the FSP_MEMORY_INIT_PARAMS structure.
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@param[in] HobListPtr Address of the HobList pointer.
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@return test result on output of FspMemoryInit API.
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**/
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EFI_STATUS
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EFIAPI
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TestFspMemoryInitApiOutput (
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IN VOID *FspmUpdDataPtr,
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IN VOID **HobListPtr
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);
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/**
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Test the output of FSP API - TempRamExit.
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@param[in] TempRamExitParam Address pointer to the TempRamExit parameters structure.
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@return test result on output of TempRamExit API.
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**/
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EFI_STATUS
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EFIAPI
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TestFspTempRamExitApiOutput (
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IN VOID *TempRamExitParam
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);
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/**
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Test the output of FSP API - FspSiliconInit.
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@param[in] FspsUpdDataPtr Address pointer to the Silicon Init parameters structure.
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@return test result on output of FspSiliconInit API.
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**/
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EFI_STATUS
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EFIAPI
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TestFspSiliconInitApiOutput (
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IN VOID *FspsUpdDataPtr
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);
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/**
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Test the output of FSP API - FspSmmInit.
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@param[in] FspiUpdDataPtr Address pointer to the Smm Init parameters structure.
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@return test result on output of FspSmmInit API.
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**/
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EFI_STATUS
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EFIAPI
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TestFspSmmInitApiOutput (
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IN VOID *FspiUpdDataPtr
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);
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