{"id":31515,"date":"2023-10-27T06:34:13","date_gmt":"2023-01-25T18:02:42","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/java%e7%9a%84%e8%bd%ac%e4%b9%89%e8%a7%a3%e6%9e%90%e6%98%af%e4%bb%80%e4%b9%88%e6%84%8f%e6%80%9d%ef%bc%9f\/"},"modified":"2024-05-04T06:12:17","modified_gmt":"2024-05-03T22:12:17","slug":"java%e7%9a%84%e8%bd%ac%e4%b9%89%e8%a7%a3%e6%9e%90%e6%98%af%e4%bb%80%e4%b9%88%e6%84%8f%e6%80%9d%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java%e7%9a%84%e8%bd%ac%e4%b9%89%e8%a7%a3%e6%9e%90%e6%98%af%e4%bb%80%e4%b9%88%e6%84%8f%e6%80%9d%ef%bc%9f\/","title":{"rendered":"Java\u7684\u8f6c\u4e49\u89e3\u6790\u662f\u4ec0\u4e48\u610f\u601d\uff1f"},"content":{"rendered":"

\u5f15\u8a00<\/h2>\n

\u5728\u4f7f\u7528Graal\u65f6\uff0c\u6211\u9047\u5230\u4e86\u90e8\u5206\u8f6c\u4e49\u89e3\u6790\u7684\u95ee\u9898\uff0c\u5b8c\u5168\u4e0d\u77e5\u9053\u8be5\u600e\u4e48\u5904\u7406\uff0c\u4e8e\u662f\u505a\u4e86\u4e00\u4e9b\u8c03\u67e5\u8bb0\u5f55\u4e0b\u6765\u7684\u7b14\u8bb0\u3002<\/p>\n

\u4ee5\u4e0b\u662f\u4e00\u7bc7\u5173\u4e8eGraal\u30fbGraalVM\u7684\u6587\u7ae0\u3002
\nhttps:\/\/qiita.com\/kinshotomoya\/items\/39a821dd6a6a52202c0a<\/p>\n

\u793a\u4f8b\u4ee3\u7801\u4f7f\u7528scala\u7f16\u5199\u3002<\/p>\n

\u9003\u9038\u662f\u6307<\/h2>\n

\u5f53\u5bf9\u8c61\u7684\u5f15\u7528\u5b58\u5728\u4e8e\u65b9\u6cd5\u4e4b\u5916\u6216\u4e0d\u540c\u7684\u7ebf\u7a0b\u65f6\u3002
\n\u5982\u679c\u8fdb\u884c\u9003\u9038\uff0c\u5c31\u53ef\u4ee5\u4ece\u591a\u4e2a\u4e0d\u7279\u5b9a\u7684\u5730\u65b9\u5f15\u7528\u5230\u5bf9\u8c61\u3002<\/p>\n

\u9003\u9038\u7684\u6761\u4ef6<\/h2>\n

\u5728\u5b9e\u9645\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u5982\u4f55\u786e\u5b9a\u5bf9\u8c61\u4f55\u65f6\u88ab\u9003\u9038\uff1f
\n\u4e3b\u8981\u6709\u4ee5\u4e0b\u4e09\u4e2a\u6761\u4ef6\u3002<\/p>\n

    \n
  1. \n
      \u5728\u65b9\u6cd5\u7684\u53c2\u6570\u4e2d\u6307\u5b9a<\/ol>\n<\/li>\n<\/ol>\n

       <\/p>\n

        \u901a\u8fc7return\u8bed\u53e5\u8fd4\u56de\uff08\u6307\u5b9a\u8fd4\u56de\u503c\uff09<\/ol>\n

        1. \u5728\u65b9\u6cd5\u7684\u53c2\u6570\u4e2d\u6307\u5b9a<\/h3>\n

        \u5bf9\u4e8e\u4f5c\u4e3aObject\u5b9e\u4f8b\u7684a\u7684\u5f15\u7528\uff0c\u53ef\u4ee5\u5728hoge\u65b9\u6cd5\u4e4b\u5916\u5f15\u7528\u3002
        \n\u4e5f\u53ef\u4ee5\u5728foo\u65b9\u6cd5\u4e2d\u5f15\u7528\u3002<\/p>\n

        case<\/span> class<\/span> Object<\/span>()<\/span>\r\n\r\nobject<\/span> Test<\/span> {<\/span>\r\n  def<\/span> hoge<\/span>:<\/span> Object<\/span> =<\/span> {<\/span>\r\n    val<\/span> a<\/span> =<\/span> Object<\/span>()<\/span>\r\n    foo<\/span>(<\/span>a<\/span>)<\/span>\r\n  }<\/span>\r\n\r\n  def<\/span> foo<\/span>(<\/span>obj<\/span>:<\/span> Object<\/span>)<\/span> =<\/span> ???<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
        2. \u4f7f\u7528return\u8fd4\u56de\uff08\u6307\u5b9a\u4e3a\u8fd4\u56de\u503c\uff09<\/h3>\n
        \u5bf9\u8c61b\u5bf9\u5b9e\u4f8b\u7684\u5f15\u7528\u53ef\u4ee5\u901a\u8fc7hoge\u65b9\u6cd5\u6765\u5f15\u7528\u3002
        \n\u53d8\u91cfb2\u6301\u6709\u5bf9\u5bf9\u8c61a\u7684\u5f15\u7528\u3002<\/p>\n
        case<\/span> class<\/span> Object<\/span>()<\/span>\r\n\r\nobject<\/span> Test<\/span> {<\/span>\r\n  def<\/span> hoge<\/span>:<\/span> Object<\/span> =<\/span> {<\/span>\r\n    val<\/span> b<\/span> =<\/span> Object<\/span>()<\/span>\r\n    b<\/span>\r\n  }<\/span>\r\n\r\n  val<\/span> b2<\/span> =<\/span> hoge<\/span>()<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
        \u6362\u53e5\u8bdd\u8bf4\uff0c\u4e0a\u8ff0\u4f8b\u5b50\u4e2d\u7684\u5b9e\u4f8ba\u548cb\u53ef\u4ee5\u5728\u65b9\u6cd5\u4e4b\u5916\u8fdb\u884c\u5f15\u7528\u3002<\/p>\n
        \u8f6c\u4e49\u89e3\u6790\u662f\u4ec0\u4e48\uff1f<\/h2>\n
        \u5206\u6790\u5b9e\u4f8b\u5f15\u7528\u662f\u5426\u9038\u51fa\u5230\u65b9\u6cd5\u5916\u6216\u5176\u4ed6\u7ebf\u7a0b\u4e2d\u3002\u6709\u5404\u79cd\u7b97\u6cd5\u3002<\/p>\n
        \u5982\u679c\u6ca1\u6709\u7ecf\u8fc7\u8f6c\u4e49\u4f1a\u88ab\u89e3\u6790\u6210\u4ec0\u4e48\uff1f<\/h2>\n
        \u900f\u904e\u9032\u884c\u8f6c\u4e49\u5206\u6790\u540e\uff0c\u53d1\u73b0\u5f15\u7528\u5df2\u88ab\u5c01\u95ed\u5728\u65b9\u6cd5\u5185\u90e8\u3002<\/p>\n
        1. \u5c06\u5b9e\u4f8b\u5b58\u50a8\u5728\u6808\u4e2d\u800c\u4e0d\u662f\u5806\u4e2d\u3002<\/h3>\n
        \u5982\u679c\u53ea\u5728\u65b9\u6cd5\u5185\u90e8\u4f7f\u7528\u5b9e\u4f8b\uff0c\u5c06\u5176\u5b58\u50a8\u5728\u65b9\u6cd5\u7ed3\u675f\u540e\u4f1a\u88ab\u91ca\u653e\u7684\u5806\u6808\u7a7a\u95f4\u4e2d\u4f1a\u66f4\u6709\u6548\u3002<\/p>\n
        2. \u5728\u6267\u884c\u65b9\u6cd5\u65f6\uff0c\u5ffd\u7565\u4e0d\u5fc5\u8981\u7684\u540c\u6b65\u3002<\/h3>\n
        \u5982\u679c\u53ea\u4ece\u5355\u4e2a\u7ebf\u7a0b\u8fdb\u884c\u5f15\u7528\uff0c\u5219\u4e0d\u9700\u8981\u7ebf\u7a0b\u95f4\u540c\u6b65\u3002<\/p>\n
        \u6700\u4f18\u5316\u6848\u4f8b<\/h2>\n
        \u9003\u9038\u5206\u6790\u7684\u7ed3\u679c\uff0c\u7f16\u8bd1\u5668\u4f1a\u5bf9\u4ee3\u7801\u8fdb\u884c\u4f18\u5316\u3002\u8fd9\u662f\u4e00\u4e2a\u4f8b\u5b50\u3002<\/p>\n
        \u5c06\u5176\u5185\u8054\u5316<\/h3>\n
        \u6709\u5982\u4e0b\u4ee3\u7801\u3002<\/p>\n
        \r\nclass<\/span> Person<\/span> {<\/span>\r\n  def<\/span> get<\/span>(<\/span>name<\/span>:<\/span> String<\/span>)<\/span> =<\/span> {<\/span>\r\n    val<\/span> person<\/span>:<\/span> Person<\/span> =<\/span> Person<\/span>(<\/span>name<\/span>)<\/span>\r\n    if<\/span> (<\/span>person<\/span>.<\/span>name<\/span> ===<\/span> \"hoge\"<\/span>)<\/span> {<\/span>\r\n    }<\/span>\r\n    ...<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n\r\ncase<\/span> class<\/span> Person<\/span>(<\/span>name<\/span>:<\/span> String<\/span>)<\/span>\r\n\r\n<\/code><\/pre>\n
        \u5bf9\u4e8e\u4f5c\u4e3aPerson\u5bf9\u8c61\u7684\u5b9e\u4f8b\u7684person\u672a\u88ab\u8f6c\u4e49\u3002
        \n\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u7f16\u8bd1\u5668\u4f1a\u8fdb\u884c\u5185\u8054\u548c\u4f18\u5316\u3002<\/p>\n
        class<\/span> Person<\/span> {<\/span>\r\n  def<\/span> get<\/span>(<\/span>name<\/span>:<\/span> String<\/span>)<\/span> =<\/span> {<\/span>\r\n    \/\/ val person: Person = Person(name)<\/span>\r\n    if<\/span> (<\/span>name<\/span> ===<\/span> \"hoge\"<\/span>)<\/span> {<\/span> \/\/ \u30a4\u30f3\u30e9\u30a4\u30f3\u5316<\/span>\r\n\r\n    }<\/span>\r\n    ...<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n\r\ncase<\/span> class<\/span> Person<\/span>(<\/span>name<\/span>:<\/span> String<\/span>)<\/span>\r\n\r\n\r\n<\/code><\/pre>\n
        \u67d0\u4e9b\u9003\u9038\u5206\u6790<\/h3>\n
        Graal\u662f\u65b0\u4e00\u4ee3\u7684JIT\u7f16\u8bd1\u5668\uff0c\u5176\u7279\u70b9\u4e4b\u4e00\u662f\u53ef\u4ee5\u8fdb\u884c\u90e8\u5206\u4f18\u5316\u3002<\/p>\n
        \u5982\u679c\u6709\u4ee5\u4e0b\u7684\u4ee3\u7801\u3002<\/p>\n
        class<\/span> Person<\/span> {<\/span>\r\n  def<\/span> get<\/span>(<\/span>name<\/span>:<\/span> String<\/span>)<\/span> =<\/span> {<\/span>\r\n    val<\/span> person<\/span>:<\/span> Person<\/span> =<\/span> Person<\/span>(<\/span>name<\/span>)<\/span>\r\n    val<\/span> cachePerson<\/span> =<\/span> Cache<\/span>.<\/span>get<\/span>(<\/span>name<\/span>)<\/span>\r\n    if<\/span> (<\/span>cachePerson<\/span>.<\/span>isDefined<\/span>)<\/span> {<\/span>\r\n      cachePerson<\/span>\r\n    }<\/span> else<\/span> {<\/span>\r\n     addToCache<\/span>(<\/span>person<\/span>)<\/span>\r\n     person<\/span>\r\n    }<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n\r\ncase<\/span> class<\/span> Person<\/span>(<\/span>name<\/span>:<\/span> String<\/span>)<\/span>\r\n\r\n<\/code><\/pre>\n
        \u5982\u679c\u5b58\u5728cachePerson\uff0c\u5219\u5bf9\u8c61person\u4e0d\u4f1a\u88ab\u9003\u9038\u3002
        \n\u7f16\u8bd1\u5668\u4f1a\u5206\u6790\u6b64\u60c5\u51b5\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u4ee5\u4e0b\u4ee3\u7801\u3002<\/p>\n
        \r\nclass<\/span> Person<\/span> {<\/span>\r\n  def<\/span> get<\/span>(<\/span>name<\/span>:<\/span> String<\/span>)<\/span> =<\/span> {<\/span>\r\n    val<\/span> cachePerson<\/span> =<\/span> Cache<\/span>.<\/span>get<\/span>(<\/span>name<\/span>)<\/span>\r\n    if<\/span> (<\/span>cachePerson<\/span>.<\/span>isDefined<\/span>)<\/span> {<\/span>\r\n      cachePerson<\/span>\r\n    }<\/span> else<\/span> {<\/span>\r\n    \u3000<\/span>val<\/span> person<\/span>:<\/span> Person<\/span> =<\/span> Person<\/span>(<\/span>name<\/span>)<\/span>\r\n    \u3000<\/span>addToCache<\/span>(<\/span>person<\/span>)<\/span>\r\n      person<\/span>\r\n    }<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n\r\ncase<\/span> class<\/span> Person<\/span>(<\/span>name<\/span>:<\/span> String<\/span>)<\/span>\r\n\r\n<\/code><\/pre>\n
        \u5982\u679c\u5b58\u5728cachePerson, \u53ef\u4ee5\u5c06person: Person = Person(name)\u79fb\u52a8\u5230else\u8bed\u53e5\u4e2d\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u7701\u53bb\u5728\u5806\u5185\u5b58\u4e2d\u5206\u914d\u5185\u5b58\u7684\u64cd\u4f5c\u3002\u76f8\u53cd\uff0c\u5b83\u4f1a\u88ab\u5b58\u50a8\u5728\u6808\u5185\u5b58\u4e2d\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u5904\u7406\u6548\u7387\u3002<\/p>\n
        \u5982\u679ccachePerson\u4e0d\u5b58\u5728\uff0cperson\u4f1a\u88ab\u9003\u9038\u5e76\u5b58\u50a8\u5728\u5806\u533a\u57df\u3002<\/p>\n
        \u8bf7\u53c2\u8003<\/h2>\n
          \n
        • \n
            https:\/\/www.slideshare.net\/jyukutyo\/graal-in-graalvm-a-new-jit-compiler<\/ul>\n<\/li>\n<\/ul>\n
             <\/p>\n
              \n
            • \n
                https:\/\/docs.oracle.com\/javase\/jp\/11\/vm\/java-hotspot-virtual-machine-performance-enhancements.html#GUID-6BD8FCB5-995B-4AE9-BFAA-B2C7DE2BA5CD<\/ul>\n<\/li>\n<\/ul>\n
                 <\/p>\n
                  \n
                • \n
                    https:\/\/www.weblio.jp\/wkpja\/content\/%E3%82%A8%E3%82%B9%E3%82%B1%E3%83%BC%E3%83%97%E8%A7%A3%E6%9E%90_%E3%82%A8%E3%82%B9%E3%82%B1%E3%83%BC%E3%83%97%E8%A7%A3%E6%9E%90%E3%81%AE%E6%A6%82%E8%A6%81<\/ul>\n<\/li>\n<\/ul>\n
                     <\/p>\n
                      https:\/\/gist.github.com\/kawasima\/32b8097163029d452553e4ae5b8e070b<\/ul>\n","protected":false},"excerpt":{"rendered":"
                      \u5f15\u8a00 \u5728\u4f7f\u7528Graal\u65f6\uff0c\u6211\u9047\u5230\u4e86\u90e8\u5206\u8f6c\u4e49\u89e3\u6790\u7684\u95ee\u9898\uff0c\u5b8c\u5168\u4e0d\u77e5\u9053\u8be5\u600e\u4e48\u5904\u7406\uff0c\u4e8e\u662f\u505a\u4e86\u4e00\u4e9b\u8c03\u67e5\u8bb0\u5f55\u4e0b\u6765\u7684\u7b14\u8bb0\u3002  […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-31515","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nJava\u7684\u8f6c\u4e49\u89e3\u6790\u662f\u4ec0\u4e48\u610f\u601d\uff1f - 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\/java\u7684\u8f6c\u4e49\u89e3\u6790\u662f\u4ec0\u4e48\u610f\u601d\uff1f\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java\u7684\u8f6c\u4e49\u89e3\u6790\u662f\u4ec0\u4e48\u610f\u601d\uff1f\" \/>\n<meta property=\"og:description\" content=\"\u5f15\u8a00 \u5728\u4f7f\u7528Graal\u65f6\uff0c\u6211\u9047\u5230\u4e86\u90e8\u5206\u8f6c\u4e49\u89e3\u6790\u7684\u95ee\u9898\uff0c\u5b8c\u5168\u4e0d\u77e5\u9053\u8be5\u600e\u4e48\u5904\u7406\uff0c\u4e8e\u662f\u505a\u4e86\u4e00\u4e9b\u8c03\u67e5\u8bb0\u5f55\u4e0b\u6765\u7684\u7b14\u8bb0\u3002 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/java\u7684\u8f6c\u4e49\u89e3\u6790\u662f\u4ec0\u4e48\u610f\u601d\uff1f\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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