Tianocore/edk2.git/MdeModulePkg/Core/RuntimeDxe/Runtime.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: Align RuntimeDxe function headers with UEFI return values

2024-02-09T22:16:32+00:00

RuntimeDxe is used to back the runtime services time functions, so align the description of the function return values with the defined values for these services as described in UEFI Spec 2.10. REF: UEFI spec 2.10 section 8 Services ? Runtime Services Cc: Liming Gao Cc: Michael D Kinney Signed-off-by: Suqiang Ren Reviewed-by: Liming Gao

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: Update modules to consume CalculateCrc32()

2017-10-10T10:10:16+00:00

Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Liming Gao Reviewed-by: Star Zeng

Update the copyright notice format

2010-04-24T09:49:11+00:00

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10420 6f19259b-4bc3-4df7-8a09-765794883524

Remove reference to PCDs of status code value. Use macros introduced in PI1.2 instead.

2010-01-27T04:00:58+00:00

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9833 6f19259b-4bc3-4df7-8a09-765794883524

Correct #include statements. This is a DXE DRIVER, not a UEFI module.

2009-07-11T23:11:21+00:00

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8898 6f19259b-4bc3-4df7-8a09-765794883524

Move NEXT_MEMORY_DESCRIPTOR() from UefiSpec.h to UEFI Library

2008-12-07T22:49:44+00:00

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6898 6f19259b-4bc3-4df7-8a09-765794883524

Remove over specific library class

2008-11-05T04:57:52+00:00

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6387 6f19259b-4bc3-4df7-8a09-765794883524