Tianocore/edk2.git/MdeModulePkg/Include/Protocol/SmmMemoryAttribute.h, branch master

MdeModulePkg: Replace include guards with #pragma once

2026-02-23T21:01:28+00:00

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

MdeModulePkg: Apply uncrustify changes

2021-12-07T17:24:28+00:00

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737 Apply uncrustify changes to .c/.h files in the MdeModulePkg package Cc: Andrew Fish Cc: Leif Lindholm Cc: Michael D Kinney Signed-off-by: Michael Kubacki Reviewed-by: Liming Gao

MdeModulePkg: Replace BSD License with BSD+Patent License

2019-04-09T17:58:08+00:00

https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney Reviewed-by: Hao Wu Reviewed-by: Jian J Wang

MdeModulePkg SmmMemoryAttribute.h: Refine some comments

2018-04-04T02:43:33+00:00

1. Fix some "support" to "supported". 2. Fix some "set" to "clear" in ClearMemoryAttributes interface. 3. Remove redundant comments for GetMemoryAttributes interface. Cc: Jian J Wang Cc: Jiewen Yao Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Star Zeng Reviewed-by: Jian J Wang Reviewed-by: Laszlo Ersek

MdeModulePkg: Fix unix style of EOL

2017-11-21T12:24:37+00:00

Cc: Wu Hao Cc: Star Zeng Cc: Eric Dong Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Jian J Wang Reviewed-by: Hao Wu

MdeModulePkg/SmmMemoryAttribute.h: Add new protocol definitions

2017-11-17T03:01:01+00:00

The new protocol gEdkiiSmmMemoryAttributeProtocolGuid is intended for PiSmmCore to be able to change memory page attributes for the sake of heap guard feature. This protocol provides three interfaces to get/set/clear page attribute. struct _EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL { EDKII_SMM_GET_MEMORY_ATTRIBUTES GetMemoryAttributes; EDKII_SMM_SET_MEMORY_ATTRIBUTES SetMemoryAttributes; EDKII_SMM_CLEAR_MEMORY_ATTRIBUTES ClearMemoryAttributes; }; Cc: Star Zeng Cc: Eric Dong Cc: Jiewen Yao Cc: Ruiyu Ni Suggested-by: Ayellet Wolman Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Jian J Wang Reviewed-by: Jiewen Yao Reviewed-by: Star Zeng Reviewed-by: Ruiyu Ni Regression-tested-by: Laszlo Ersek