{"id":45610,"date":"2022-12-31T07:38:25","date_gmt":"2023-10-28T17:13:23","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45610-2\/"},"modified":"2024-04-29T07:47:31","modified_gmt":"2024-04-28T23:47:31","slug":"45610-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45610-2\/","title":{"rendered":""},"content":{"rendered":"

\u306f\u3058\u3081\u306b<\/h1>\n

\u3053\u306e\u8a18\u4e8b\u306fRust\u305d\u306e3 Advent Calendar 2019 23\u65e5\u76ee\u3067\u3059\u3002\uff08\u7a7a\u3044\u3066\u3044\u305f\u306e\u3067\u98db\u3073\u5165\u308a\u53c2\u52a0\u3067\uff09<\/p>\n

Rust\u3067\u30d7\u30e9\u30b0\u30a4\u30f3\u30b7\u30b9\u30c6\u30e0\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u3063\u305f\u306e\u3067\u3001\u305d\u306e\u6642\u306e\u77e5\u898b\u3092\u307e\u3068\u3081\u3066\u30b5\u30f3\u30d7\u30eb\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u3063\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n

\u3053\u3053\u3067\u8a00\u3046\u30d7\u30e9\u30b0\u30a4\u30f3\u30b7\u30b9\u30c6\u30e0\u3068\u306f\u3001\u4f8b\u3048\u3070GIMP\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u3088\u3046\u306b\u3001\u30d0\u30a4\u30ca\u30ea\u5f62\u5f0f\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u5b9f\u884c\u6642\u306b\u8aad\u307f\u8fbc\u3093\u3067\u6a5f\u80fd\u8ffd\u52a0\u3059\u308b\u3082\u306e\u3092\u6307\u3057\u307e\u3059\u3002\u6700\u8fd1\u3053\u306e\u624b\u306e\u62e1\u5f35\u306f\u30b9\u30af\u30ea\u30d7\u30c8\u8a00\u8a9e\u3067\u3084\u308b\u3053\u3068\u304c\u591a\u304f\u3001\u3053\u306e\u5f62\u5f0f\u306f\u3042\u307e\u308a\u898b\u304b\u3051\u306a\u304f\u306a\u308a\u307e\u3057\u305f\u3002\u3057\u304b\u3057Rust\u3067\u5b9f\u88c5\u3057\u305f\u3044\u306a\u3089\u30d0\u30a4\u30ca\u30ea\u306e\u52d5\u7684\u30ed\u30fc\u30c9\u3092\u3059\u308b\u3057\u304b\u306a\u3044\u3060\u308d\u3046\u3001\u3068\u3044\u3046\u3053\u3068\u3067\u3084\u3063\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n

\u6ce8\u610f<\/h1>\n

\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u306f\u624b\u5143\u306e\u74b0\u5883\u306eRust1.40.0\u3067\u306f\u52d5\u4f5c\u3057\u3066\u3044\u307e\u3059\u304c\u3001Rust\u30b3\u30f3\u30d1\u30a4\u30e9\u304c\u4fdd\u8a3c\u3057\u3066\u3044\u306a\u3044\u4eee\u5b9a\u3092\u3044\u304f\u3064\u304b\u7f6e\u3044\u3066\u3044\u308b\u306e\u3067\u3001\u52d5\u304f\u4fdd\u8a3c\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4e0d\u5177\u5408\u304c\u81f4\u547d\u7684\u306b\u306a\u308b\u3088\u3046\u306a\u74b0\u5883\u3067\u306f\u4f7f\u308f\u306a\u3044\u65b9\u304c\u3044\u3044\u3068\u601d\u3044\u307e\u3059\u3002
\n\u8a73\u7d30\u306f\u30b3\u30e1\u30f3\u30c8\u6b04\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002
\n\u30b3\u30e1\u30f3\u30c8\u306f\u6d88\u3048\u3066\u3057\u307e\u3063\u305f\u306e\u3067\u5b89\u5168\u6027\u306b\u95a2\u3057\u3066\u306f\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3082\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n

\u30b5\u30f3\u30d7\u30eb\u30d7\u30ed\u30b8\u30a7\u30af\u30c8<\/h1>\n

\u30ea\u30dd\u30b8\u30c8\u30ea\u306f\u3053\u3061\u3089\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u30c4\u30fc\u30eb\u672c\u4f53\u3068\u30d7\u30e9\u30b0\u30a4\u30f3\u4e8c\u3064\u3092\u542b\u3093\u3060\u30ef\u30fc\u30af\u30b9\u30da\u30fc\u30b9\u306b\u306a\u3063\u3066\u3044\u3066\u3001calc\u304c\u672c\u4f53\u3067plugin_add\/plugin_mul\u304c\u30d7\u30e9\u30b0\u30a4\u30f3\u3067\u3059\u3002
\n\u96fb\u5353\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u6f14\u7b97\u5b50\u3092\u30d7\u30e9\u30b0\u30a4\u30f3\u3067\u8ffd\u52a0\u3067\u304d\u308b\u3001\u3068\u3044\u3046\u611f\u3058\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u5b9f\u969b\u306b\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u4f7f\u3063\u3066\u3044\u308b\u69d8\u5b50\u306fcalc\/src\/main.rs\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n

fn<\/span> main<\/span>()<\/span> -><\/span> Result<\/span><<\/span>()<\/span>><\/span> {<\/span>\r\n    let<\/span> mut<\/span> pm<\/span> =<\/span> PluginManager<\/span>::<\/span>new<\/span>();<\/span>\r\n    pm<\/span>.load<\/span>(<\/span>&<\/span>PathBuf<\/span>::<\/span>from<\/span>(<\/span>\".\/target\/debug\/libplugin_add.so\"<\/span>))<\/span>?<\/span>;<\/span>\r\n    pm<\/span>.load<\/span>(<\/span>&<\/span>PathBuf<\/span>::<\/span>from<\/span>(<\/span>\".\/target\/debug\/libplugin_mul.so\"<\/span>))<\/span>?<\/span>;<\/span>\r\n\r\n    for<\/span> plugin<\/span> in<\/span> pm<\/span>.plugins<\/span>()<\/span> {<\/span>\r\n        println!<\/span>(<\/span>\"Plugin: {}\"<\/span>,<\/span> plugin<\/span>.name<\/span>());<\/span>\r\n        println!<\/span>(<\/span>\"Calc: 1 {} 2 = {}\"<\/span>,<\/span> plugin<\/span>.operator<\/span>(),<\/span> plugin<\/span>.calc<\/span>(<\/span>1<\/span>,<\/span> 2<\/span>));<\/span>\r\n    }<\/span>\r\n\r\n    Ok<\/span>(())<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
pm.load\u3067\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u30d0\u30a4\u30ca\u30ea\u3092\u30ed\u30fc\u30c9\u3057\u3066\u3001\u5404\u30d7\u30e9\u30b0\u30a4\u30f3\u306ecalc\u3067\u8a08\u7b97\u3057\u3066\u3044\u307e\u3059\u3002
\n\u5b9f\u884c\u3059\u308b\u3068<\/p>\n
$<\/span> cargo run\r\n    Finished dev [unoptimized + debuginfo] target(s) in 0.01s\r\n     Running `target\/debug\/calc`\r\nPlugin: Add\r\nCalc: 1 + 2 = 3\r\nPlugin: Mul\r\nCalc: 1 * 2 = 2\r\n\r\n<\/span><\/code><\/pre>\n
\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u89e3\u8aac<\/h1>\n
\u3053\u3053\u304b\u3089\u5404\u5b9f\u88c5\u306e\u89e3\u8aac\u3092\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n
Plugin\u30c8\u30ec\u30a4\u30c8<\/h2>\n
\u307e\u305a\u5404\u30d7\u30e9\u30b0\u30a4\u30f3\u304c\u63d0\u4f9b\u3059\u308b\u6a5f\u80fd\u3092\u30c8\u30ec\u30a4\u30c8\u3068\u3057\u3066\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n
pub<\/span> trait<\/span> Plugin<\/span> {<\/span>\r\n    fn<\/span> name<\/span>(<\/span>&<\/span>self<\/span>)<\/span> -><\/span> String<\/span>;<\/span>\r\n    fn<\/span> operator<\/span>(<\/span>&<\/span>self<\/span>)<\/span> -><\/span> String<\/span>;<\/span>\r\n    fn<\/span> calc<\/span>(<\/span>&<\/span>self<\/span>,<\/span> a<\/span>:<\/span> u32<\/span>,<\/span> b<\/span>:<\/span> u32<\/span>)<\/span> -><\/span> u32<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u96fb\u5353\u3068\u3057\u3066\u5fc5\u8981\u306a\u306e\u306fcalc\u3060\u3051\u3067\u3059\u304c\u3001\u8868\u793a\u7528\u306bString\u3092\u8fd4\u3059\u30e1\u30bd\u30c3\u30c9\u3082\u4ed8\u3051\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n
PluginAdd\/PluginMul<\/h2>\n
\u5b9a\u7fa9\u3057\u305f\u30c8\u30ec\u30a4\u30c8\u3092\u5b9f\u88c5\u3057\u305fPluginAdd\/PluginMul\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n
pub<\/span> struct<\/span> PluginAdd<\/span>;<\/span>\r\n\r\nimpl<\/span> Plugin<\/span> for<\/span> PluginAdd<\/span> {<\/span>\r\n    fn<\/span> name<\/span>(<\/span>&<\/span>self<\/span>)<\/span> -><\/span> String<\/span> {<\/span>\r\n        String<\/span>::<\/span>from<\/span>(<\/span>\"Add\"<\/span>)<\/span>\r\n    }<\/span>\r\n\r\n    fn<\/span> operator<\/span>(<\/span>&<\/span>self<\/span>)<\/span> -><\/span> String<\/span> {<\/span>\r\n        String<\/span>::<\/span>from<\/span>(<\/span>\"+\"<\/span>)<\/span>\r\n    }<\/span>\r\n\r\n    fn<\/span> calc<\/span>(<\/span>&<\/span>self<\/span>,<\/span> a<\/span>:<\/span> u32<\/span>,<\/span> b<\/span>:<\/span> u32<\/span>)<\/span> -><\/span> u32<\/span> {<\/span>\r\n        a<\/span> +<\/span> b<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u3053\u3053\u307e\u3067\u306f\u7279\u306b\u52d5\u7684\u30ed\u30fc\u30c9\u306b\u95a2\u3059\u308b\u90e8\u5206\u306f\u306a\u3044\u666e\u901a\u306eRust\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u3059\u3002<\/p>\n
crate-type<\/h2>\n
\u666e\u901a\u306eRust\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u30b3\u30f3\u30d1\u30a4\u30eb\u3059\u308b\u3068.rlib\u3068\u3044\u3046\u62e1\u5f35\u5b50\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u751f\u6210\u3055\u308c\u307e\u3059\u304c\u3001\u3053\u308c\u306f\u9759\u7684\u30ea\u30f3\u30af\u7528\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3042\u308a\u3001\u52d5\u7684\u30ed\u30fc\u30c9\u306f\u3067\u304d\u307e\u305b\u3093\u3002
\n\u305d\u3053\u3067Cargo.toml\u306bcrate-type\u3092\u66f8\u3044\u3066\u751f\u6210\u3055\u308c\u308b\u30d0\u30a4\u30ca\u30ea\u306e\u5f62\u5f0f\u3092\u5909\u66f4\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
[lib]<\/span>\r\ncrate-type<\/span> =<\/span> [\"cdylib\"]<\/span>\r\n<\/code><\/pre>\n
\u3053\u3053\u3067\u9078\u629e\u80a2\u304c2\u3064\u3042\u308a\u307e\u3059\uff08\u305f\u3076\u3093\uff09\u3002\u7c21\u5358\u306b\u6bd4\u8f03\u3057\u3066\u307f\u308b\u3068<\/p>\n
\n
crate-type\u610f\u5473\u6700\u5c0f\u30b5\u30a4\u30ba\u6700\u5927\u30b5\u30a4\u30badylibRust\u306e\u52d5\u7684\u30ed\u30fc\u30c9\u30e9\u30a4\u30d6\u30e9\u30ea\u5c0f\u3055\u3044\u5927\u304d\u3044cdylibC\u306e\u52d5\u7684\u30ed\u30fc\u30c9\u30e9\u30a4\u30d6\u30e9\u30ea\u5927\u304d\u3044\u5c0f\u3055\u3044<\/div>\n<\/div>\n
\u3068\u3044\u3046\u611f\u3058\u306e\u3088\u3046\u3067\u3059\u3002
\nRust\u304b\u3089Rust\u3092\u547c\u3073\u51fa\u3059\u306e\u3067\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304cRust\u3067\u3082C\u3067\u3082\u305d\u308c\u307b\u3069\u9055\u3044\u306f\u306a\u3044\u306e\u3067\u3059\u304c\u3001\uff08\u73fe\u6642\u70b9\u306eRust\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u5b9f\u88c5\u3067\u306f\uff09\u30b5\u30a4\u30ba\u306b\u95a2\u3059\u308b\u7279\u6027\u304c\u5927\u304d\u304f\u9055\u3044\u307e\u3059\u3002
\n\u30b5\u30f3\u30d7\u30eb\u3067\u306fPluginAdd\u3092cdylib\u306bPluginMul\u3092dylib\u306b\u3057\u3066\u307f\u305f\u3068\u3053\u308d\u3001\u751f\u6210\u3055\u308c\u305f\u30d0\u30a4\u30ca\u30ea\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n
$<\/span> ls<\/span> -sh<\/span> target\/debug\/*<\/span>.so\r\n2.7M target\/debug\/libplugin_add.so  624K target\/debug\/libplugin_mul.so\r\n<\/span><\/code><\/pre>\n
\u307b\u3068\u3093\u3069\u540c\u3058\u5b9f\u88c5\u306a\u306e\u306b\u30b5\u30a4\u30ba\u304c4\u500d\u304f\u3089\u3044\u9055\u3044\u307e\u3059\u3002\u3053\u308c\u306fcdylib\u306fRust\u306e\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u542b\u307f\u3001dylib\u306f\uff08\u30ed\u30fc\u30c9\u3055\u308c\u308b\u74b0\u5883\u304cRust\u306a\u306e\u3067\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u5b58\u5728\u306f\u4eee\u5b9a\u3057\u3066\uff09\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u542b\u307e\u306a\u3044\u304b\u3089\u3067\u3059\u3002
\n\u3053\u308c\u304ccdylib\u306e\u6700\u5c0f\u30b5\u30a4\u30ba\u304c\u5927\u304d\u3044\u7406\u7531\u3067\u3001\u3069\u308c\u307b\u3069\u5c0f\u3055\u3044\u30d7\u30e9\u30b0\u30a4\u30f3\u3067\u3082\u5fc5\u305a3MB\u304f\u3089\u3044\u304b\u304b\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002
\n\uff08\u3053\u3053\u304b\u3089\u3055\u3089\u306b\u524a\u308b\u65b9\u6cd5\u306f\u3042\u308a\u307e\u3059\u304c\u305d\u308c\u306f\u7f6e\u3044\u3066\u304a\u3044\u3066\uff09<\/p>\n
\u4e00\u65b9\u300cdylib\u306e\u6700\u5927\u30b5\u30a4\u30ba\u304c\u5927\u304d\u3044\u300d\u3068\u3044\u3046\u306e\u306f\u73fe\u5728\u306eRust\u30b3\u30f3\u30d1\u30a4\u30e9\u5b9f\u88c5\u3067\u306fdylib\u306f\u4f9d\u5b58\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u5168\u30b7\u30f3\u30dc\u30eb\u3092\uff08\u4f7f\u3063\u3066\u3044\u306a\u304f\u3066\u3082\uff09\u542b\u3093\u3067\u3057\u307e\u3046\u305f\u3081\u3067\u3059\u3002\u4eca\u56de\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u4f9d\u5b58\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u307b\u3068\u3093\u3069\u306a\u3044\u306e\u3067\u554f\u984c\u306b\u306a\u308a\u307e\u305b\u3093\u304c\u3001\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u30b5\u30a4\u30ba\u304c\u672c\u4f53\u3088\u308a\u5927\u304d\u304f\u306a\u3063\u305f\u308a\u3057\u307e\u3059\u3002<\/p>\n
\u3053\u306e\u3042\u305f\u308a\u306f\u4ed5\u69d8\u304c\u6c7a\u307e\u3063\u3066\u3044\u308b\u308f\u3051\u3067\u3082\u306a\u3055\u305d\u3046\u306a\u306e\u3067\u3044\u307e\u3044\u3061\u5224\u65ad\u3057\u96e3\u3044\u3067\u3059\u304c\u3001\u5b9f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u65b9\u3067\u306f\u30d7\u30e9\u30b0\u30a4\u30f3\u304c\u5927\u304d\u304f\u306a\u308a\u3059\u304e\u308b\u306e\u3092\u907f\u3051\u308b\u305f\u3081\u306bcdylib\u3092\u9078\u629e\u3057\u307e\u3057\u305f\u3002<\/p>\n
PluginManager<\/h2>\n
\u6b21\u306b\u672c\u4f53\u5074\u3067\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u30ed\u30fc\u30c9\u3059\u308b\u305f\u3081\u306bPluginManager\u3092\u5b9f\u88c5\u3057\u307e\u3059\u3002
\n\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u52d5\u7684\u30ed\u30fc\u30c9\u3092\u884c\u3046\u30af\u30ec\u30fc\u30c8\u3068\u3057\u3066libloading\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n
[dependencies]<\/span>\r\nlibloading<\/span> =<\/span> \"*\"<\/span>\r\n<\/code><\/pre>\n
\u307e\u305a\u3001PluginManager\u306e\u5b9a\u7fa9\u3067\u3059\u3002<\/p>\n
pub<\/span> struct<\/span> PluginManager<\/span> {<\/span>\r\n    plugins<\/span>:<\/span> Vec<\/span><<\/span>Box<\/span><<\/span>dyn<\/span> Plugin<\/span>>><\/span>,<\/span>\r\n    libraries<\/span>:<\/span> Vec<\/span><<\/span>Library<\/span>><\/span>,<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u30ed\u30fc\u30c9\u3057\u305fPlugin\u3092\u4fdd\u6301\u3059\u308bVec\u3068\u3001\u30ed\u30fc\u30c9\u3057\u305f\u30e9\u30a4\u30d6\u30e9\u30ea\u305d\u306e\u3082\u306e\u3092\u4fdd\u6301\u3059\u308bVec\u3092\u6301\u3061\u307e\u3059\u3002
\n\u5b9f\u88c5\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
impl<\/span> PluginManager<\/span> {<\/span>\r\n    pub<\/span> fn<\/span> new<\/span>()<\/span> -><\/span> Self<\/span> {<\/span>\r\n        PluginManager<\/span> {<\/span>\r\n            plugins<\/span>:<\/span> Vec<\/span>::<\/span>new<\/span>(),<\/span>\r\n            libraries<\/span>:<\/span> Vec<\/span>::<\/span>new<\/span>(),<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n\r\n    pub<\/span> fn<\/span> load<\/span>(<\/span>&<\/span>mut<\/span> self<\/span>,<\/span> path<\/span>:<\/span> &<\/span>Path<\/span>)<\/span> -><\/span> Result<\/span><<\/span>()<\/span>><\/span> {<\/span>\r\n        let<\/span> lib<\/span> =<\/span> Library<\/span>::<\/span>new<\/span>(<\/span>path<\/span>)<\/span>?<\/span>;<\/span>\r\n\r\n        let<\/span> load_plugin<\/span>:<\/span> Symbol<\/span><<\/span>extern<\/span> \"C\"<\/span> fn<\/span>()<\/span> -><\/span> Box<\/span><<\/span>dyn<\/span> Plugin<\/span>>><\/span> =<\/span>\r\n            unsafe<\/span> {<\/span> lib<\/span>.get<\/span>(<\/span>b<\/span>\"load_plugin\"<\/span>)<\/span> }<\/span>?<\/span>;<\/span>\r\n        let<\/span> plugin<\/span> =<\/span> load_plugin<\/span>();<\/span>\r\n\r\n        self<\/span>.plugins<\/span>.push<\/span>(<\/span>plugin<\/span>);<\/span>\r\n        self<\/span>.libraries<\/span>.push<\/span>(<\/span>lib<\/span>);<\/span>\r\n        Ok<\/span>(())<\/span>\r\n    }<\/span>\r\n\r\n    pub<\/span> fn<\/span> plugins<\/span>(<\/span>&<\/span>self<\/span>)<\/span> -><\/span> &<\/span>[<\/span>Box<\/span><<\/span>dyn<\/span> Plugin<\/span>><\/span>]<\/span> {<\/span>\r\n        &<\/span>self<\/span>.plugins<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
lib.get(b”load_plugin”)\u3067\u30d7\u30e9\u30b0\u30a4\u30f3\u304b\u3089load_plugin\u95a2\u6570\u3092\u6301\u3063\u3066\u304d\u3066\u3001\u6b21\u306e\u884c\u3067\u305d\u306e\u95a2\u6570\u3092\u547c\u3093\u3067Plugin\u306e\u30dd\u30a4\u30f3\u30bf\u3092\u5f97\u307e\u3059\u3002Plugin\u3092\u5f97\u305f\u3089Library\u306f\u4e0d\u8981\u306b\u306a\u308b\u3088\u3046\u306b\u898b\u3048\u307e\u3059\u304c\u3001Plugin\u306e\u30d0\u30a4\u30ca\u30ea\u306e\u5b9f\u4f53\u306fLibrary\u304c\u4fdd\u6301\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u3053\u308c\u304cDrop\u3055\u308c\u308b\u3068Plugin\u306e\u95a2\u6570\u547c\u3073\u51fa\u3057\u306b\u5931\u6557\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081PluginManager\u306bLibrary\u3092\u4fdd\u6301\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n
impl<\/span> Drop<\/span> for<\/span> PluginManager<\/span> {<\/span>\r\n    fn<\/span> drop<\/span>(<\/span>&<\/span>mut<\/span> self<\/span>)<\/span> {<\/span>\r\n        \/\/ Plugin drop must be called before Library drop.<\/span>\r\n        self<\/span>.plugins<\/span>.clear<\/span>();<\/span>\r\n        self<\/span>.libraries<\/span>.clear<\/span>();<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u6700\u5f8c\u306bPluginManager\u306bDrop\u3092\u5b9f\u88c5\u3057\u307e\u3059\u3002\u3053\u308c\u306fPluginManager\u306e\u30e1\u30f3\u30d0\u306eDrop\u9806\u5e8f\u3092\u5236\u5fa1\u3059\u308b\u305f\u3081\u3067\u3001\u3082\u3057libraries\u304c\u5148\u306bDrop\u3055\u308c\u3066\u3057\u307e\u3046\u3068\u3001plugins\u3092Drop\u3059\u308b\u3068\u304d\u306b\u306f\u3059\u3067\u306bDrop\u7528\u306e\u30d0\u30a4\u30ca\u30ea\u306f\u89e3\u653e\u3055\u308c\u3066\u3057\u307e\u3063\u3066\u3044\u308b\u306e\u3067Drop\u306b\u5931\u6557\u3057\u307e\u3059\u3002\uff08\u624b\u5143\u306e\u74b0\u5883\u3067\u306fSEGV\u3057\u307e\u3057\u305f\uff09<\/p>\n
load_plugin<\/h2>\n
\u6700\u5f8c\u306b\u5404\u30d7\u30e9\u30b0\u30a4\u30f3\u306bPluginManager\u304c\u547c\u3073\u51fa\u3059load_plugin\u95a2\u6570\u3092\u5b9f\u88c5\u3057\u307e\u3059\u3002<\/p>\n
#[no_mangle]<\/span>\r\npub<\/span> extern<\/span> \"C\"<\/span> fn<\/span> load_plugin<\/span>()<\/span> -><\/span> Box<\/span><<\/span>dyn<\/span> Plugin<\/span>><\/span> {<\/span>\r\n    Box<\/span>::<\/span>new<\/span>(<\/span>PluginAdd<\/span>)<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
Plugin\u3092new\u3057\u3066\u30dd\u30a4\u30f3\u30bf\u3067\u8fd4\u3059\u3060\u3051\u3067\u3059\u304c\u3001cdylib\u3067\u4f7f\u3046\u5834\u5408\u306f#[no_mangle]\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n
\u30a2\u30ed\u30b1\u30fc\u30bf\u306e\u6307\u5b9a<\/h2>\n
\u30b3\u30e1\u30f3\u30c8\u6b04\u3067\u3054\u6307\u6458\u3044\u305f\u3060\u3044\u305f\u306e\u3067\u3059\u304c\u3001cdylib\/staticlib\u4ee5\u5916\u306etype\u3067\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30a2\u30ed\u30b1\u30fc\u30bf\u304c\u6c7a\u307e\u3063\u3066\u3044\u306a\u3044\u306e\u3067\u660e\u793a\u3057\u305f\u65b9\u304c\u826f\u3044\u305d\u3046\u3067\u3059\u3002\u4eca\u56de\u306e\u5834\u5408\u672c\u4f53\u3068dylib\u306b\u306a\u3063\u3066\u3044\u308bPluginMul\u304c\u8a72\u5f53\u3057\u307e\u3059\u3002<\/p>\n
use<\/span> std<\/span>::<\/span>alloc<\/span>::<\/span>System<\/span>;<\/span>\r\n\r\n#[global_allocator]<\/span>\r\nstatic<\/span> ALLOCATOR<\/span>:<\/span> System<\/span> =<\/span> System<\/span>;<\/span>\r\n<\/code><\/pre>\n
Rust\u30b3\u30f3\u30d1\u30a4\u30e9\u9593\u306e\u76f8\u4e92\u904b\u7528\u6027\u306b\u3064\u3044\u3066<\/h1>\n
Twitter\u3067\u306e\u30b3\u30e1\u30f3\u30c8\u3092\u898b\u3066\u3044\u3066\u6c17\u4ed8\u304d\u307e\u3057\u305f\u304c\u3001\u91cd\u8981\u306a\u524d\u63d0\u3092\u66f8\u304d\u5fd8\u308c\u3066\u3044\u307e\u3057\u305f\u2026\u3002
\n\u3053\u306e\u30b7\u30b9\u30c6\u30e0\u306f\u672c\u4f53\u3068\u30d7\u30e9\u30b0\u30a4\u30f3\u3067\u540c\u3058\u30d0\u30fc\u30b8\u30e7\u30f3\u306eRust\u30b3\u30f3\u30d1\u30a4\u30e9\u3092\u4f7f\u3046\u524d\u63d0\u3067\u3059\u3002<\/p>\n
\u672c\u4f53\u3068\u30d7\u30e9\u30b0\u30a4\u30f3\u3067\u540c\u3058\u30e1\u30e2\u30ea\u30ec\u30a4\u30a2\u30a6\u30c8\u3084\u30e1\u30e2\u30ea\u30a2\u30ed\u30b1\u30fc\u30bf\u304c\u63a1\u7528\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u60f3\u5b9a\u3057\u3066\u3044\u308b\u7b87\u6240\u304c\u3044\u304f\u3064\u304b\u3042\u308a\uff08\u4f8b\u3048\u3070Plugin\u30c8\u30ec\u30a4\u30c8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30e1\u30e2\u30ea\u30ec\u30a4\u30a2\u30a6\u30c8\u306a\u3069\uff09\u3001\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u98df\u3044\u9055\u3046\u3068\u6b63\u3057\u304f\u52d5\u304b\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u3082\u3057\u4efb\u610f\u306eRust\u30b3\u30f3\u30d1\u30a4\u30e9\u9593\u3067\u76f8\u4e92\u904b\u7528\u6027\u3092\u4fdd\u8a3c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u306a\u3089\u3001Plugin\u30c8\u30ec\u30a4\u30c8\u306e\u3088\u3046\u306a\u4ed5\u7d44\u307f\u306f\u8ae6\u3081\u3066\u666e\u901a\u306eC-FFI\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n
\u203b\u30b3\u30e1\u30f3\u30c8\u6b04\u306bC-FFI\u3092\u4f7f\u3063\u305f\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u66f8\u3044\u3066\u3044\u305f\u3060\u304d\u307e\u3057\u305f\u3002\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3059\u3002<\/p>\n
\u30ea\u30f3\u30af<\/h1>\n
\u672c\u8a18\u4e8b\u306e\u6d3e\u751f\u8a18\u4e8b\u3078\u306e\u30ea\u30f3\u30af\u3092\u8f09\u305b\u3066\u304a\u304d\u307e\u3059\u3002\u3044\u305a\u308c\u3082<\/p>\n
\u307e\u3068\u3081<\/h1>\n
\u3053\u308c\u3067\u30b5\u30f3\u30d7\u30eb\u306e\u96fb\u5353\u304c\u5b9f\u88c5\u3067\u304d\u307e\u3057\u305f\u3002
\n\u7279\u306bcrate-type\u3042\u305f\u308a\u306e\u4ed5\u69d8\u306f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u8aad\u3093\u3067\u3082\u3044\u307e\u3044\u3061\u3088\u304f\u5206\u304b\u3089\u306a\u304b\u3063\u305f\u306e\u3067\u3001\u8a73\u3057\u3044\u65b9\u304c\u3044\u305f\u3089\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u306f\u3058\u3081\u306b \u3053\u306e\u8a18\u4e8b\u306fRust\u305d\u306e3 Advent Calendar 2019 23\u65e5\u76ee\u3067\u3059\u3002\uff08\u7a7a\u3044\u3066\u3044\u305f\u306e\u3067\u98db […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-45610","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n- Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/45610-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"\u306f\u3058\u3081\u306b \u3053\u306e\u8a18\u4e8b\u306fRust\u305d\u306e3 Advent Calendar 2019 23\u65e5\u76ee\u3067\u3059\u3002\uff08\u7a7a\u3044\u3066\u3044\u305f\u306e\u3067\u98db […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/45610-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-10-28T17:13:23+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-28T23:47:31+00:00\" \/>\n<meta name=\"author\" content=\"\u79d1, \u9896\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u79d1, \u9896\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/45610-2\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/45610-2\/\",\"name\":\"- Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\"},\"datePublished\":\"2023-10-28T17:13:23+00:00\",\"dateModified\":\"2024-04-28T23:47:31+00:00\",\"author\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/8ca01ba7f7362ad4edb7da206a12f29e\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/zh\/blog\/45610-2\/\"]}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/\",\"name\":\"Blog - Silicon Cloud\",\"description\":\"\",\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/8ca01ba7f7362ad4edb7da206a12f29e\",\"name\":\"\u79d1, \u9896\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/8a6fb3cc7ba2f69d2189ba532aec4633ea7ed75ac0af162ec367cb3abc0fb2af?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/8a6fb3cc7ba2f69d2189ba532aec4633ea7ed75ac0af162ec367cb3abc0fb2af?s=96&d=mm&r=g\",\"caption\":\"\u79d1, \u9896\"},\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/author\/keying\/\"},{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/45610-2\/#local-main-organization-logo\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"Blog - Silicon Cloud\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"- Blog - Silicon Cloud","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.silicloud.com\/zh\/blog\/45610-2\/","og_locale":"zh_CN","og_type":"article","og_description":"\u306f\u3058\u3081\u306b \u3053\u306e\u8a18\u4e8b\u306fRust\u305d\u306e3 Advent Calendar 2019 23\u65e5\u76ee\u3067\u3059\u3002\uff08\u7a7a\u3044\u3066\u3044\u305f\u306e\u3067\u98db […]","og_url":"https:\/\/www.silicloud.com\/zh\/blog\/45610-2\/","og_site_name":"Blog - Silicon Cloud","article_published_time":"2023-10-28T17:13:23+00:00","article_modified_time":"2024-04-28T23:47:31+00:00","author":"\u79d1, \u9896","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"\u79d1, \u9896","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"2 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/zh\/blog\/45610-2\/","url":"https:\/\/www.silicloud.com\/zh\/blog\/45610-2\/","name":"- Blog - Silicon Cloud","isPartOf":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/#website"},"datePublished":"2023-10-28T17:13:23+00:00","dateModified":"2024-04-28T23:47:31+00:00","author":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/8ca01ba7f7362ad4edb7da206a12f29e"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.silicloud.com\/zh\/blog\/45610-2\/"]}]},{"@type":"WebSite","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#website","url":"https:\/\/www.silicloud.com\/zh\/blog\/","name":"Blog - Silicon Cloud","description":"","inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/8ca01ba7f7362ad4edb7da206a12f29e","name":"\u79d1, \u9896","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/8a6fb3cc7ba2f69d2189ba532aec4633ea7ed75ac0af162ec367cb3abc0fb2af?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/8a6fb3cc7ba2f69d2189ba532aec4633ea7ed75ac0af162ec367cb3abc0fb2af?s=96&d=mm&r=g","caption":"\u79d1, \u9896"},"url":"https:\/\/www.silicloud.com\/zh\/blog\/author\/keying\/"},{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.silicloud.com\/zh\/blog\/45610-2\/#local-main-organization-logo","url":"","contentUrl":"","caption":"Blog - Silicon Cloud"}]}},"_links":{"self":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/45610","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/comments?post=45610"}],"version-history":[{"count":2,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/45610\/revisions"}],"predecessor-version":[{"id":83970,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/45610\/revisions\/83970"}],"wp:attachment":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/media?parent=45610"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/categories?post=45610"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/tags?post=45610"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}