Documentation/translations/zh_TW/dev-tools/sparse.rst
Source file repositories/reference/linux-study-clean/Documentation/translations/zh_TW/dev-tools/sparse.rst
File Facts
- System
- Linux kernel
- Corpus path
Documentation/translations/zh_TW/dev-tools/sparse.rst- Extension
.rst- Size
- 3657 bytes
- Lines
- 92
- Domain
- Support Tooling And Documentation
- Bucket
- Documentation
- Inferred role
- Support Tooling And Documentation: documentation
- Status
- atlas-only
Why This File Exists
Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
- Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
Dependency Surface
- No C-style include directives detected by the generator.
Detected Declarations
enum pm_request
Annotated Snippet
Chinese translated version of Documentation/dev-tools/sparse.rst
If you have any comment or update to the content, please contact the
original document maintainer directly. However, if you have a problem
communicating in English you can also ask the Chinese maintainer for
help. Contact the Chinese maintainer if this translation is outdated
or if there is a problem with the translation.
Traditional Chinese maintainer: Hu Haowen <2023002089@link.tyut.edu.cn>
-------------------------------------------------------------------------
Documentation/dev-tools/sparse.rst 的繁體中文翻譯
如果想評論或更新本文的內容,請直接聯繫原文檔的維護者。如果你使用英文
交流有困難的話,也可以向繁體中文版維護者求助。如果本翻譯更新不及時或
者翻譯存在問題,請聯繫繁體中文版維護者。
繁體中文版維護者: 胡皓文 Hu Haowen <2023002089@link.tyut.edu.cn>
繁體中文版翻譯者: 胡皓文 Hu Haowen <2023002089@link.tyut.edu.cn>
以下爲正文
-------------------------------------------------------------------------
Copyright 2004 Linus Torvalds
Copyright 2004 Pavel Machek <pavel@ucw.cz>
Copyright 2006 Bob Copeland <me@bobcopeland.com>
使用 sparse 工具做類型檢查
~~~~~~~~~~~~~~~~~~~~~~~~~~
"__bitwise" 是一種類型屬性,所以你應該這樣使用它::
typedef int __bitwise pm_request_t;
enum pm_request {
PM_SUSPEND = (__force pm_request_t) 1,
PM_RESUME = (__force pm_request_t) 2
};
這樣會使 PM_SUSPEND 和 PM_RESUME 成爲位方式(bitwise)整數(使用"__force"
是因爲 sparse 會抱怨改變位方式的類型轉換,但是這裡我們確實需要強制進行轉
換)。而且因爲所有枚舉值都使用了相同的類型,這裡的"enum pm_request"也將
會使用那個類型做爲底層實現。
而且使用 gcc 編譯的時候,所有的 __bitwise/__force 都會消失,最後在 gcc
看來它們只不過是普通的整數。
坦白來說,你並不需要使用枚舉類型。上面那些實際都可以濃縮成一個特殊的"int
__bitwise"類型。
所以更簡單的辦法只要這樣做::
typedef int __bitwise pm_request_t;
#define PM_SUSPEND ((__force pm_request_t) 1)
#define PM_RESUME ((__force pm_request_t) 2)
現在你就有了嚴格的類型檢查所需要的所有基礎架構。
一個小提醒:常數整數"0"是特殊的。你可以直接把常數零當作位方式整數使用而
不用擔心 sparse 會抱怨。這是因爲"bitwise"(恰如其名)是用來確保不同位方
式類型不會被弄混(小尾模式,大尾模式,cpu尾模式,或者其他),對他們來說
常數"0"確實是特殊的。
獲取 sparse 工具
~~~~~~~~~~~~~~~~
你可以從 Sparse 的主頁獲取最新的發布版本:
https://www.kernel.org/pub/software/devel/sparse/dist/
Annotation
- Detected declarations: `enum pm_request`.
- Atlas domain: Support Tooling And Documentation / Documentation.
- Implementation status: atlas-only.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.