RedfishPkg: 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

RedfishPkg: introduce Redfish HTTP protocol

2024-02-29T03:25:18+00:00

Introduce Redfish HTTP protocol to improve Redfish performance and communication stability between BIOS and Redfish service. - Feature drivers often query same Redfish resource multiple times for different purpose. Implement HTTP cache mechanism to improve HTTP GET performance. "UseCache" parameter is provided if application likes to send HTTP GET request to Redfish service without using cache data. - This driver will retire stale cache data automatically when application modify Redfish resource at service side. - PCD PcdHttpCacheDisabled is used to disable cache mechanism in this driver for debugging purpose. - PCD PcdRedfishServiceContentEncoding is used to enable content encoding while sending data to Redfish service. - Redfish HTTP protocol also implement retry mechanism to retry HTTP request when BIOS receive unexpected response from Redfish service. This function helps BIOS Redfish to finish its job as much as possible. - PCDs are defined to control how many times BIOS will retry the request and how many time BIOS will wait between retries. Signed-off-by: Nickle Wang Co-authored-by: Igor Kulchytskyy Cc: Abner Chang Cc: Igor Kulchytskyy Cc: Nick Ramirez Reviewed-by: Abner Chang Reviewed-by: Igor Kulchytskyy

Tianocore/edk2.git/RedfishPkg/Include/RedfishServiceData.h, branch dependabot/github_actions/actions/github-script-9

RedfishPkg: Replace include guards with #pragma once

RedfishPkg: introduce Redfish HTTP protocol