From c7e22e7174473bc1d88c83a37710cf1e1b501ab4 Mon Sep 17 00:00:00 2001 From: kylinholmes Date: Mon, 12 Aug 2024 04:48:23 +0000 Subject: [PATCH] =?UTF-8?q?=F0=9F=8E=89auto=20update=20by=20Gmeek=20action?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- README.md | 8 +- ...75\345\212\250\346\200\201\345\272\223.md" | 113 ++++ blogBase.json | 2 +- docs/index.html | 13 +- ...e-he-yun-xing-shi-jia-zai-dong-tai-ku.html | 556 ++++++++++++++++++ docs/postList.json | 2 +- docs/rss.xml | 114 +++- 7 files changed, 800 insertions(+), 8 deletions(-) create mode 100644 "backup/\345\234\250 Rust\344\270\255 \345\212\250\346\200\201\351\223\276\346\216\245\345\222\214\350\277\220\350\241\214\346\227\266\345\212\240\350\275\275\345\212\250\346\200\201\345\272\223.md" create mode 100644 docs/post/zai- Rust-zhong- -dong-tai-lian-jie-he-yun-xing-shi-jia-zai-dong-tai-ku.html diff --git a/README.md b/README.md index 169a5b9..2fae3be 100644 --- a/README.md +++ b/README.md @@ -1,6 +1,6 @@ # Kylin's :link: https://kylinholmes.github.io -### :page_facing_up: [1](https://kylinholmes.github.io/tag.html) -### :speech_balloon: 0 -### :hibiscus: 19 -### :alarm_clock: 2024-06-22 00:31:55 +### :page_facing_up: [2](https://kylinholmes.github.io/tag.html) +### :speech_balloon: 3 +### :hibiscus: 2357 +### :alarm_clock: 2024-08-12 12:48:23 ### Powered by :heart: [Gmeek](https://github.com/Meekdai/Gmeek) diff --git "a/backup/\345\234\250 Rust\344\270\255 \345\212\250\346\200\201\351\223\276\346\216\245\345\222\214\350\277\220\350\241\214\346\227\266\345\212\240\350\275\275\345\212\250\346\200\201\345\272\223.md" "b/backup/\345\234\250 Rust\344\270\255 \345\212\250\346\200\201\351\223\276\346\216\245\345\222\214\350\277\220\350\241\214\346\227\266\345\212\240\350\275\275\345\212\250\346\200\201\345\272\223.md" new file mode 100644 index 0000000..48e6a88 --- /dev/null +++ "b/backup/\345\234\250 Rust\344\270\255 \345\212\250\346\200\201\351\223\276\346\216\245\345\222\214\350\277\220\350\241\214\346\227\266\345\212\240\350\275\275\345\212\250\346\200\201\345\272\223.md" @@ -0,0 +1,113 @@ +## 动态链接crate + +**假设动态库是 impls** +**需要链接到 impls的crate是abi** + +```bash +├── abi # runtime loading library +│ ├── Cargo.toml # specifies dependent libraries to be used for dynamic linking +│ └── src +│ ├── import.rs # import impls to this crate +│ ├── lib.rs # +│ └── main.rs # test main: loading abi and binding interface +├── impls # dynamic link library +│ └── src +│ └── lib.rs # impls +└── README.md +``` + +`main` == loadl ibrary => `abi` == dynamic link ==> `impls` + +设置lib类型为`cdylib` +```toml +# impls/Cargo.toml +[lib] +crate-type = ["cdylib"] +``` + +导出接口 +```rust +// impls/src/lib.rs +#[no_mangle] +pub extern "C" fn add(left: usize, right: usize) -> usize { + left + right +} +``` + + + +设置依赖 +```toml +# abi/Cargo.toml +[dependencies] +impls = { path = "../impls" } +``` + +接口定义 +```rust +#[link(name = "impls")] +extern "C" { + pub fn add(a :usize, b: usize) -> usize; +} +``` + +调用接口 +```rust +println!("Add {}", add(1, 9)); +``` + +## 运行时加载动态库 +因为是运行时加载，所以函数的接口不需要单独定义，通常是绑定到函数指针上 + +```toml +# abi/Cargo.toml +[dependencies] +impls = { path = "../impls" } +libloading = "0.8.5" +``` + +```rust +// abi/src/main.rs +use libloading::{Library, Symbol}; + +static DLL_HANDLE:Lazy = Lazy::new(|| { + unsafe { + let dll = std::env::args().nth(1).expect("No DLL provided"); + Library::new(dll).expect("Failed to load DLL") + } +}); + +// 定义好函数指针的结构体 +#[derive(Debug)] +struct Interface<'a> { + add: Symbol<'a, extern "C" fn(usize, usize) -> usize>, + init: Symbol<'a, extern "C" fn() -> ()>, +} + +// 加载动态库后，绑定函数指针 +impl <'a> Interface<'a> { + fn new() -> Self { + unsafe { + let add: Symbol usize> = DLL_HANDLE.borrow().get(b"add").expect("Failed to load add"); + let init: Symbol ()> = DLL_HANDLE.borrow().get(b"init").expect("Failed to load init"); + Interface { + add, + init + } + } + } +} + +fn main() { + let handle = Interface::new(); + (handle.init)(); + let result = (handle.add)(1, 9); + println!("Result: {}", result); + +} + +``` + + +## Demo +项目地址 [Demo](https://github.com/kylinholmes/rs_dynamic_link) \ No newline at end of file diff --git a/blogBase.json b/blogBase.json index 9062a05..991a363 100644 --- a/blogBase.json +++ b/blogBase.json @@ -1 +1 @@ -{"singlePage": [], "startSite": "", "filingNum": "", "onePageListNum": 20, "commentLabelColor": "#006b75", "yearColorList": ["#bc4c00", "#0969da", "#1f883d", "#A333D0"], "i18n": "CN", "themeMode": "manual", "dayTheme": "light_tritanopia", "nightTheme": "dark_tritanopia", "urlMode": "pinyin", "script": "", "style": "", "head": "", "indexScript": "", "indexStyle": "", "bottomText": "", "showPostSource": 1, "iconList": {}, "UTC": 8, "rssSplit": "sentence", "exlink": {}, "needComment": 1, "allHead": "", "title": "Kylin's", "subTitle": "Essay", "avatarUrl": "https://avatars.githubusercontent.com/u/45586871?v=4", 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"primerCSS": "", "homeUrl": "https://kylinholmes.github.io", "prevUrl": "disabled", "nextUrl": "disabled"} \ No newline at end of file +{"singlePage": [], "startSite": "", "filingNum": "", "onePageListNum": 20, "commentLabelColor": "#006b75", "yearColorList": ["#bc4c00", "#0969da", "#1f883d", "#A333D0"], "i18n": "CN", "themeMode": "manual", "dayTheme": "light_tritanopia", "nightTheme": "dark_tritanopia", "urlMode": "pinyin", "script": "", "style": "", "head": "", "indexScript": "", "indexStyle": "", "bottomText": "", "showPostSource": 1, "iconList": {}, "UTC": 8, "rssSplit": "sentence", "exlink": {}, "needComment": 1, "allHead": "", "title": "Kylin's", "subTitle": "Essay", "avatarUrl": "https://avatars.githubusercontent.com/u/45586871?v=4", "GMEEK_VERSION": "last", "postListJson": {"P1": {"htmlDir": "docs/post/This is a Title.html", "labels": ["documentation"], "postTitle": "This is a Title", "postUrl": "post/This%20is%20a%20Title.html", "postSourceUrl": "https://github.com/kylinholmes/kylinholmes.github.io/issues/1", "commentNum": 3, "wordCount": 19, "description": "# Head 1\r\nsome text\u3002", "top": 0, "createdAt": 1718985782, "style": "", "script": "", "head": "", "ogImage": "https://avatars.githubusercontent.com/u/45586871?v=4", "createdDate": "2024-06-22", "dateLabelColor": "#bc4c00"}, "P2": {"htmlDir": "docs/post/zai- Rust-zhong- -dong-tai-lian-jie-he-yun-xing-shi-jia-zai-dong-tai-ku.html", "labels": ["rust"], "postTitle": "\u5728 Rust\u4e2d \u52a8\u6001\u94fe\u63a5\u548c\u8fd0\u884c\u65f6\u52a0\u8f7d\u52a8\u6001\u5e93", "postUrl": "post/zai-%20Rust-zhong-%20-dong-tai-lian-jie-he-yun-xing-shi-jia-zai-dong-tai-ku.html", "postSourceUrl": "https://github.com/kylinholmes/kylinholmes.github.io/issues/2", "commentNum": 0, "wordCount": 2338, "description": "## \u52a8\u6001\u94fe\u63a5crate\r\n\r\n**\u5047\u8bbe\u52a8\u6001\u5e93\u662f impls**\r\n**\u9700\u8981\u94fe\u63a5\u5230 impls\u7684crate\u662fabi**\r\n\r\n```bash\r\n\u251c\u2500\u2500 abi # runtime loading library\r\n\u2502 \u251c\u2500\u2500 Cargo.toml # specifies dependent libraries to be used for dynamic linking\r\n\u2502 \u2514\u2500\u2500 src\r\n\u2502 \u251c\u2500\u2500 import.rs # import impls to this crate\r\n\u2502 \u251c\u2500\u2500 lib.rs # \r\n\u2502 \u2514\u2500\u2500 main.rs # test main: loading abi and binding interface\r\n\u251c\u2500\u2500 impls # dynamic link library \r\n\u2502 \u2514\u2500\u2500 src\r\n\u2502 \u2514\u2500\u2500 lib.rs # impls\r\n\u2514\u2500\u2500 README.md\r\n```\r\n\r\n`main` == loadl ibrary => `abi` == dynamic link ==> `impls`\r\n\r\n\u8bbe\u7f6elib\u7c7b\u578b\u4e3a`cdylib`\r\n```toml\r\n# impls/Cargo.toml\r\n[lib]\r\ncrate-type = ['cdylib']\r\n```\r\n\r\n\u5bfc\u51fa\u63a5\u53e3\r\n```rust\r\n// impls/src/lib.rs\r\n#[no_mangle]\r\npub extern 'C' fn add(left: usize, right: usize) -> usize {\r\n left + right\r\n}\r\n```\r\n\r\n\r\n\r\n\u8bbe\u7f6e\u4f9d\u8d56 \r\n```toml\r\n# abi/Cargo.toml\r\n[dependencies]\r\nimpls = { path = '../impls' }\r\n```\r\n\r\n\u63a5\u53e3\u5b9a\u4e49\r\n```rust\r\n#[link(name = 'impls')]\r\nextern 'C' {\r\n pub fn add(a :usize, b: usize) -> usize;\r\n}\r\n```\r\n\r\n\u8c03\u7528\u63a5\u53e3\r\n```rust\r\nprintln!('Add {}', add(1, 9));\r\n```\r\n\r\n## \u8fd0\u884c\u65f6\u52a0\u8f7d\u52a8\u6001\u5e93\r\n\u56e0\u4e3a\u662f\u8fd0\u884c\u65f6\u52a0\u8f7d\uff0c\u6240\u4ee5\u51fd\u6570\u7684\u63a5\u53e3\u4e0d\u9700\u8981\u5355\u72ec\u5b9a\u4e49\uff0c\u901a\u5e38\u662f\u7ed1\u5b9a\u5230\u51fd\u6570\u6307\u9488\u4e0a\r\n\r\n```toml\r\n# abi/Cargo.toml\r\n[dependencies]\r\nimpls = { path = '../impls' }\r\nlibloading = '0.8.5'\r\n```\r\n\r\n```rust\r\n// abi/src/main.rs\r\nuse libloading::{Library, Symbol};\r\n\r\nstatic DLL_HANDLE:Lazy = Lazy::new(|| {\r\n unsafe {\r\n let dll = std::env::args().nth(1).expect('No DLL provided');\r\n Library::new(dll).expect('Failed to load DLL')\r\n }\r\n});\r\n\r\n// \u5b9a\u4e49\u597d\u51fd\u6570\u6307\u9488\u7684\u7ed3\u6784\u4f53\r\n#[derive(Debug)]\r\nstruct Interface<'a> {\r\n add: Symbol<'a, extern 'C' fn(usize, usize) -> usize>,\r\n init: Symbol<'a, extern 'C' fn() -> ()>,\r\n}\r\n\r\n// \u52a0\u8f7d\u52a8\u6001\u5e93\u540e\uff0c\u7ed1\u5b9a\u51fd\u6570\u6307\u9488\r\nimpl <'a> Interface<'a> {\r\n fn new() -> Self {\r\n unsafe {\r\n let add: Symbol usize> = DLL_HANDLE.borrow().get(b'add').expect('Failed to load add');\r\n let init: Symbol ()> = DLL_HANDLE.borrow().get(b'init').expect('Failed to load init');\r\n Interface {\r\n add,\r\n init\r\n }\r\n }\r\n }\r\n}\r\n\r\nfn main() {\r\n let handle = Interface::new();\r\n (handle.init)();\r\n let result = (handle.add)(1, 9);\r\n println!('Result: {}', result);\r\n \r\n}\r\n\r\n```\r\n\r\n\r\n## Demo\r\n\u9879\u76ee\u5730\u5740 [Demo](https://github.com/kylinholmes/rs_dynamic_link)\u3002", "top": 0, "createdAt": 1723438079, "style": "", "script": "", "head": "", "ogImage": 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Essay