{"id":2352,"date":"2022-06-28T21:59:29","date_gmt":"2022-06-28T13:59:29","guid":{"rendered":"https:\/\/lonelinerd.com\/?p=2352"},"modified":"2022-06-28T23:17:20","modified_gmt":"2022-06-28T15:17:20","slug":"csharp_destructor_call_timing","status":"publish","type":"post","link":"https:\/\/lonelinerd.com\/index.php\/2022\/06\/28\/csharp_destructor_call_timing\/","title":{"rendered":"[C#] \u6dfa\u8ac7\u5c0d\u8c61\u6790\u69cb\u5668\u7684\u8abf\u7528\u6642\u6a5f\u8207\u4f5c\u7528\u57df\u7684\u554f\u984c"},"content":{"rendered":"\t\t
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\u00a0 \u00a0 \u00a0 \u00a0 \u4eca\u5929\u548c\u7fa4\u53cb\u5076\u7136\u804a\u5230\u4e86\u4e00\u500b\u95dc\u65bc\u975c\u614b\u5b57\u6bb5\u5c0e\u81f4\u7684\u5167\u5b58\u6cc4\u9732\uff08\u7fa4\u53cb\u300c\u6d77\u661f\u300d\u7684\u6587\u7ae0\uff1ahttps:\/\/starfishpeter.cn\/archives\/8497<\/a>\uff09\u3002\u804a\u5230\u9019\u500b\u5167\u5b58\u4e0a\u7684\u554f\u984c\uff0c\u5c31\u5f88\u5bb9\u6613\u5c0e\u5411\u5230\u5c0dCLR\u7684GC\u6a5f\u5236\u7684\u8a0e\u8ad6\u3002<\/p>

\u00a0 \u00a0 \u00a0 \u00a0 \u800c\u6211\u5011\u90fd\u77e5\u9053\uff0cCLR\u5728\u56de\u6536\u5c0d\u8c61\u524d\uff0c\u5982\u679c\u5c0d\u8c61\u901a\u904e\u6790\u69cb\u51fd\u6578\uff08~className()\uff09\u4f86\u91cd\u5beb\u4e86Finalize\u65b9\u6cd5\uff0c\u7b2c\u4e00\u6b21GC\u6642\u5c31\u6703\u5148\u5c07\u5b83\u5f9e\u300c\u7d42\u7d50\u5217\u8868\u300d\u4e2d\u79fb\u9664\uff0c\u6dfb\u52a0\u5230freachable\u968a\u5217\u4e2d\u4e26\u8abf\u7528\u5b83\u5011\u7684Finalize\u65b9\u6cd5\u3002<\/span>\u9019\u90e8\u5206\u7684\u5167\u5bb9\u6211\u4e5f\u505a\u4e86\u76f8\u61c9\u7684\u7b46\u8a18\uff08CLR\u300c\u6258\u7ba1\u5806\u548c\u5783\u573e\u56de\u6536\u300d- \u7d42\u7d50\u7684\u5167\u90e8\u5de5\u4f5c\u539f\u7406<\/a>\uff09\u3002<\/p>

\u00a0 \u00a0 \u00a0 \u00a0\u7136\u800c\u4eca\u5929\u5728\u7fa4\u53cb\u505a\u6790\u69cb\u51fd\u6578\u7684\u6e2c\u8a66\u6642\uff08\u770b\u5167\u5b58\u6709\u6c92\u6709\u88ab\u56de\u6536\uff09\u6642\uff0c\u537b\u767c\u73fe\u7121\u8ad6\u5982\u4f55\uff0c\u90fd\u6c92\u6709\u8fa6\u6cd5\u56de\u6536\u8cc7\u6e90\u3002\u7121\u8ad6\u624b\u52d5\u8abf\u7528\u591a\u5c11\u6b21GC.Collect\uff0c\u751a\u81f3\u9019\u500b\u5c0d\u8c61\u6a21\u578b\u4e2d\u6c92\u6709\u4e00\u500b\u975c\u614b\u6210\u54e1\uff0c\u9019\u500b\u5c0d\u8c61\u4e5f\u6c92\u6709\u88ab\u56de\u6536\uff08\u7576\u7136\uff0c\u9019\u500b\u5c0d\u8c61\u5df2\u7d93\u662f\u7f6e\u70banull\u7684\u4e86\uff09\uff0c\u4e0b\u5716\u70ba\u7fa4\u53cb\u7684\u6848\u4f8b\uff1a<\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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    1. Microsoft\u7684C#\u5b98\u65b9\u6587\u6a94\u2014\u2014Object.Finalize\u65b9\u6cd5<\/a>\uff1a\u9019\u500b\u6587\u6a94\u88e1\u63d0\u5230\u4e86Finalize\u65b9\u6cd5\u7684\u9650\u5236\u4ee5\u53ca\u53ef\u80fd\u4e0d\u6703\u57f7\u884c\u7684\u539f\u56e0<\/li>
    2. MSDN\u4e0amanuelalonge\u7684\u4e00\u500b\u8a0e\u8ad6\u689d\u76ee\u2014\u2014\u300cWhy is the destructor not making his job?\u300d<\/a><\/li><\/ol><\/li><\/ol>

      \u00a0 \u00a0 \u00a0 \u00a0 \u9019\u5169\u500b\u689d\u76ee\uff0c\u5c24\u5176\u662f\u7b2c\u4e8c\u500b\uff0c\u63d0\u5230\u4e86\u4e00\u500b\u5f88\u91cd\u8981\u7684\u9ede\uff1a<\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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      “The destructor will not be called until p1 and p2 go out of scope. Because they are declared in the Main method, this will not happen until the program has ended, so you will not have a chance to see “Destructor called”.”<\/em><\/span><\/h5>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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      \u00a0 \u00a0 \u00a0 \u00a0 \u7c21\u55ae\u4f86\u8aaa\uff0c\u5c31\u662f\u4f5c\u7528\u57df<\/span>\u7684\u554f\u984c\u3002\u5982\u679c\u5c0d\u8c61\u7684\u4f5c\u7528\u57df\u662f\u5728\u50cfMain\u51fd\u6578\u9019\u6a23\u8207\u7a0b\u5e8f\u904b\u884c\u540c\u751f\u5171\u6b7b\u7684\u5340\u57df\u4e2d\uff0c\u9019\u500b\u5c0d\u8c61\u7684\u5167\u5b58\uff08\u90a3\u6015\u8b8a\u91cf\u5df2\u7d93\u7f6e\u7a7a\u4e86\uff09\u6703\u5728\u7a0b\u5e8f\u7d50\u675f\u904b\u884c\u5f8c\u624d\u88ab\u56de\u6536\uff0c\u800c\u6790\u69cb\u5668\u4e5f\u6703\u5728\u7a0b\u5e8f\u7d50\u675f\u7684\u6642\u5019\u624d\u88ab\u8abf\u7528\u3002<\/span><\/p>

      \u00a0 \u00a0 \u00a0 \u00a0 \u63db\u800c\u8a00\u4e4b\uff0c\u5982\u679c\u5c0d\u8c61\u7684\u4f5c\u7528\u57df\u662f\u5728\u55ae\u7368\u7684\u4e00\u500b\u51fd\u6578<\/span>\uff08\u5982\uff1astatic void DoStuff()\uff09\u4e2d\uff0c\u518d\u5728Main\u88e1\u8abf\u7528\u9019\u500b\u51fd\u6578DoStuff()\uff0c\u7136\u5f8c\u8abf\u7528GC.Collect()\uff0c\u90a3\u4e00\u5207\u5c07\u80fd\u6b63\u5e38\u904b\u884c\u3002\u56e0\u70ba\u5c0d\u8c61\u7684\u4f5c\u7528\u57df\u662f\u5728DoStuff\u51fd\u6578\u5167\uff0cDoStuff\u51fd\u6578\u57f7\u884c\u5b8c\u7562\u5f8c\uff0c\u51fd\u6578\u88e1\u8072\u660e\u7684\u5c0d\u8c61\u5167\u5b58\u4e5f\u6703\u96a8\u4e4b\u88ab\u56de\u6536\uff0c\u6790\u69cb\u51fd\u6578\u4e5f\u80fd\u6b63\u5e38\u88ab\u8abf\u7528<\/span>\u3002\u5982\u4ee5\u4e0b\u6e2c\u8a66\u7528\u4f8b\uff1a<\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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      \n\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

      \u5728CLR\u8a0e\u8ad6GC\u7684\u7ae0\u7bc0\u4e2d\uff0c\u6211\u5011\u77e5\u9053\u5c0d\u8c61\u88ab\u56de\u6536\u524d\u6703\u8abf\u7528\u5176Finalize\u65b9\u6cd5\u3002\u800c\u6211\u5011\u4e5f\u53ef\u4ee5\u4f7f\u7528\u6790\u69cb\u51fd\u5f0f\u4f86\u9054\u5230\u91cd\u5bebFinalize\u65b9\u6cd5\u7684\u6548\u679c\u3002
      \n\u4f46\u4e8b\u5be6\u662f\u5426\u771f\u7684\u9019\u9ebc\u7406\u60f3\u5462\uff1fFinalize\u65b9\u6cd5\u662f\u5426\u4e5f\u80fd\u9806\u5229\u88ab\u8abf\u7528\u5462\uff1f\u4f3c\u4e4e\u4e0d\u7136\u3002<\/p>\n","protected":false},"author":1,"featured_media":2355,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,17],"tags":[],"class_list":["post-2352","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-programming-notes","category-devnotes"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/lonelinerd.com\/wp-content\/uploads\/2022\/06\/FeatureCover_Destructor.png","_links":{"self":[{"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/posts\/2352","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/comments?post=2352"}],"version-history":[{"count":13,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/posts\/2352\/revisions"}],"predecessor-version":[{"id":2371,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/posts\/2352\/revisions\/2371"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/media\/2355"}],"wp:attachment":[{"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/media?parent=2352"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/categories?post=2352"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/tags?post=2352"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}