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2026-02-24MdeModulePkg: Replace include guards with #pragma onceMichael Kubacki1-4/+1
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>
2021-12-07MdeModulePkg: Apply uncrustify changesMichael Kubacki2-16/+20
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737 Apply uncrustify changes to .c/.h files in the MdeModulePkg package Cc: Andrew Fish <afish@apple.com> Cc: Leif Lindholm <leif@nuviainc.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com> Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
2019-12-11MdeModulePkg PeiCore: Improve comment semanticsMichael Kubacki1-2/+2
This patch clarifies wording in several PeiCore comments to improve reading comprehension. Cc: Dandan Bi <dandan.bi@intel.com> Cc: Liming Gao <liming.gao@intel.com> Cc: Jian J Wang <jian.j.wang@intel.com> Cc: Hao A Wu <hao.a.wu@intel.com> Signed-off-by: Michael Kubacki <michael.a.kubacki@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com> Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
2019-12-11MdeModulePkg PeiCore: Fix typosMichael Kubacki1-4/+4
Cc: Dandan Bi <dandan.bi@intel.com> Cc: Liming Gao <liming.gao@intel.com> Cc: Jian J Wang <jian.j.wang@intel.com> Cc: Hao A Wu <hao.a.wu@intel.com> Signed-off-by: Michael Kubacki <michael.a.kubacki@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com> Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
2019-04-09MdeModulePkg: Replace BSD License with BSD+Patent LicenseMichael D Kinney2-14/+2
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 <michael.d.kinney@intel.com> Reviewed-by: Hao Wu <hao.a.wu@intel.com> Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
2018-06-28MdeModulePkg: Clean up source filesLiming Gao2-33/+33
1. Do not use tab characters 2. No trailing white space in one line 3. All files must end with CRLF Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Liming Gao <liming.gao@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com>
2014-06-26Refine code to make it more safely.Eric Dong1-2/+2
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Eric Dong <eric.dong@intel.com> Reviewed-by: Feng Tian <feng.tian@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15598 6f19259b-4bc3-4df7-8a09-765794883524
2012-09-29MdeModulePkg:removes the unreachable ‘break’ instruction after a ↵erictian1-1/+0
‘return’ instruction in the switch(). Signed-off-by: Olivier Martin <olivier.martin@arm.com> Signed-off-by: Feng Tian <feng.tian@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com> git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13778 6f19259b-4bc3-4df7-8a09-765794883524
2010-12-04Update PEI/DXE/SMM dispatchers to include DEBUG ((DEBUG_DISPATCH, )) macros ↵mdkinney1-1/+21
to log the evaluation of all dependency expressions. This logging can be enabled by setting the DEBUG_DISPATCH bit(0x80) of the PCD gEfiMdePkgTokenSpaceGuid.PcdDebugPrintErrorLevel. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11117 6f19259b-4bc3-4df7-8a09-765794883524
2010-04-24Update the copyright notice formathhtian2-4/+4
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10420 6f19259b-4bc3-4df7-8a09-765794883524
2009-02-12* MdeModulePkg/Core/Pei/Dependency/Dependency.hjljusten1-1/+1
Decrease MAX_GRAMMAR_SIZE from 256 to 64. In Dependency.c => PeimDispatchReadiness, a local variable 'EvalStack' makes an array of EVAL_STACK_ENTRY structures to store a stack for processing the dependency expression. Due to alignment considerations, sizeof (EVAL_STACK_ENTRY) is 16 bytes on 64 bit architectures. This means the size of the EvalStack local variable in PeimDispatchReadiness grows to 4kb. In the PEI phase, the stack area may be very small, and therefore 4kb is much to large. Reducing MAX_GRAMMAR_SIZE to 64 will lower the size of EvalStack to 1kb. While reducing this to 1kb solves an issue seen with GCC on X64, it is still a large usage of stack for the PEI phase, and future improvements may still need to be made. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7514 6f19259b-4bc3-4df7-8a09-765794883524
2008-10-31Use #include "XXX.h" for module internal header files.qhuang81-1/+1
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6333 6f19259b-4bc3-4df7-8a09-765794883524
2008-08-08Correct some comments to add the detailed information.lgao41-3/+3
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5620 6f19259b-4bc3-4df7-8a09-765794883524
2008-08-08Synchronize the comments for PeiService.klu21-2/+2
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5619 6f19259b-4bc3-4df7-8a09-765794883524
2008-07-23Code scrub for PeiCore module.klu21-1/+0
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5558 6f19259b-4bc3-4df7-8a09-765794883524
2008-07-21change lower case to upper case to pass Unix builderic_tian1-1/+1
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5531 6f19259b-4bc3-4df7-8a09-765794883524
2008-07-17Change first char in filename to uppercase klu21-0/+0
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5508 6f19259b-4bc3-4df7-8a09-765794883524
2008-07-17Change first char in filename to uppercase klu21-0/+0
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5507 6f19259b-4bc3-4df7-8a09-765794883524
2008-07-16Fix function comment to follows doxygen format.klu22-61/+34
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5499 6f19259b-4bc3-4df7-8a09-765794883524
2008-03-19Modify all file header to follow doxygen formatklu22-4/+4
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4917 6f19259b-4bc3-4df7-8a09-765794883524
2007-10-16Remove comments for removed parameter.klu21-4/+0
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4123 6f19259b-4bc3-4df7-8a09-765794883524
2007-09-24Merge branch of PI tree to main trunkklu21-12/+9
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3918 6f19259b-4bc3-4df7-8a09-765794883524
2007-07-10Removed CommonHeader.h from MdePkg & MdeModulePkgAJFISH2-9/+0
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3180 6f19259b-4bc3-4df7-8a09-765794883524
2007-07-04Add PeiCore module for enabling NT32Pkg, please attention this PeiCore does ↵klu22-0/+310
follows PI specification except some FV definitions. Also the old definition of MdeModulePkg/Include/Ppi/LoadFile.h and EFI_PEI_STARTUP_DESCRIPTOR in MdePkg/Include/PiPei.h will be removed when enabling PI. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3029 6f19259b-4bc3-4df7-8a09-765794883524
generated by cgit v1.2.3 (git 2.39.0) at 2026-10-01 04:43:34 +0300