{"id":203527,"date":"2025-05-22T12:28:49","date_gmt":"2025-05-22T04:28:49","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203527\/"},"modified":"2025-05-22T12:28:49","modified_gmt":"2025-05-22T04:28:49","slug":"%e5%a4%9a%e7%ba%bf%e7%a8%8b%e8%ae%bf%e9%97%ae%e5%85%b1%e4%ba%ab%e6%88%90%e5%91%98%e5%8f%98%e9%87%8f%e5%af%bc%e8%87%b4%e6%89%93%e5%8d%b0%e7%bb%93%e6%9e%9c%e7%9b%b8%e5%90%8c%ef%bc%8c%e5%a6%82%e4%bd%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203527\/","title":{"rendered":"\u591a\u7ebf\u7a0b\u8bbf\u95ee\u5171\u4eab\u6210\u5458\u53d8\u91cf\u5bfc\u81f4\u6253\u5370\u7ed3\u679c\u76f8\u540c\uff0c\u5982\u4f55\u89e3\u51b3\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u591a\u7ebf\u7a0b\u8bbf\u95ee\u5171\u4eab\u6210\u5458\u53d8\u91cf\u5bfc\u81f4\u6253\u5370\u7ed3\u679c\u76f8\u540c\uff0c\u5982\u4f55\u89e3\u51b3\uff1f<\/h1>\n<p>\u79ef\u7d2f\u77e5\u8bc6\uff0c\u80dc\u8fc7\u79ef\u84c4\u91d1\u94f6\uff01\u6bd5\u7adf\u5728\u6587\u7ae0\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4f1a\u9047\u5230\u5404\u79cd\u5404\u6837\u7684\u95ee\u9898\uff0c\u5f80\u5f80\u90fd\u662f\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u6ca1\u6709\u638c\u63e1\u597d\u800c\u5bfc\u81f4\u7684\uff0c\u56e0\u6b64\u57fa\u7840\u77e5\u8bc6\u70b9\u7684\u79ef\u7d2f\u662f\u5f88\u91cd\u8981\u7684\u3002\u4e0b\u9762\u672c\u6587\u300a\u591a\u7ebf\u7a0b\u8bbf\u95ee\u5171\u4eab\u6210\u5458\u53d8\u91cf\u5bfc\u81f4\u6253\u5370\u7ed3\u679c\u76f8\u540c\uff0c\u5982\u4f55\u89e3\u51b3\uff1f\u300b\uff0c\u5c31\u5e26\u5927\u5bb6\u8bb2\u89e3\u4e00\u4e0b\u77e5\u8bc6\u70b9\uff0c\u82e5\u662f\u4f60\u5bf9\u672c\u6587\u611f\u5174\u8da3\uff0c\u6216\u8005\u662f\u60f3\u641e\u61c2\u5176\u4e2d\u67d0\u4e2a\u77e5\u8bc6\u70b9\uff0c\u5c31\u8bf7\u4f60\u7ee7\u7eed\u5f80\u4e0b\u770b\u5427~<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241110\/17312452646730b4d0a7b57.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u89e3\u51b3\u591a\u7ebf\u7a0b\u8bbf\u95ee\u6210\u5458\u53d8\u91cf\u6253\u5370\u7ed3\u679c\u76f8\u540c\u7684\u95ee\u9898<\/strong><\/p>\n<p>\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e2d\uff0c\u5f53\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u8bbf\u95ee\u5171\u4eab\u6210\u5458\u53d8\u91cf\u65f6\uff0c\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\u3002\u5728\u672c\u6848\u4f8b\u4e2d\uff0c\u4e09\u4e2a\u7ebf\u7a0b\u540c\u65f6\u8bbf\u95ee test3 \u7c7b\u7684 temp \u6210\u5458\u53d8\u91cf\uff0c\u5e76\u4e14\u90fd\u6267\u884c temp++ \u64cd\u4f5c\u3002\u6b63\u5e38\u60c5\u51b5\u4e0b\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u6267\u884c\u5b8c\u8be5\u64cd\u4f5c\u540e\uff0ctemp \u503c\u5e94\u52a0\u4e00\u3002\u7136\u800c\uff0c\u672c\u6848\u4f8b\u4e2d\u6253\u5370\u7684\u7ed3\u679c\u5747\u4e3a 129\u3002<\/p>\n<p>\u8be5\u95ee\u9898\u7684\u539f\u56e0\u5728\u4e8e\uff0ctemp++ \u64cd\u4f5c\u6d89\u53ca\u8bfb\u53d6\u3001\u4fee\u6539\u548c\u5199\u5165 temp \u503c\uff0c\u8fd9\u662f\u4e00\u4e2a\u4e0d\u53ef\u5206\u5272\u7684\u64cd\u4f5c\u3002\u4f46\u662f\uff0c\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e2d\uff0c\u591a\u4e2a\u7ebf\u7a0b\u53ef\u80fd\u540c\u65f6\u6267\u884c temp++ \u64cd\u4f5c\uff0c\u5bfc\u81f4\u8be5\u64cd\u4f5c\u88ab\u5206\u5272\u6267\u884c\uff0c\u9020\u6210\u6570\u636e\u4e0d\u4e00\u81f4\u3002<\/p>\n<p>\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u9700\u8981\u4f7f\u7528 java \u4e2d\u7684 synchronized \u5173\u952e\u5b57\u6765\u540c\u6b65\u5bf9 temp \u6210\u5458\u53d8\u91cf\u7684\u8bbf\u95ee\uff0c\u4ee5\u786e\u4fdd\u6bcf\u6b21\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u53ef\u4ee5\u6267\u884c temp++ \u64cd\u4f5c\u3002\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre>class Test2 implements Runnable {\n\n    @Override\n    public void run() {\n        Test3 test3 = Test3.getInstance();\n        try {\n            Thread.sleep(1000);\n        } catch (InterruptedException e) {\n            e.printStackTrace();\n        }\n        synchronized (test3) {\n            test3.temp = test3.temp + 1;\n            System.out.println(test3.temp);\n        }\n    }\n}<\/pre>\n<p>\u901a\u8fc7\u4f7f\u7528 synchronized \u5173\u952e\u5b57\uff0c\u6211\u4eec\u786e\u4fdd\u4e86\u5bf9 temp \u6210\u5458\u53d8\u91cf\u7684\u8bbf\u95ee\u662f\u540c\u6b65\u7684\uff0c\u5373\u6bcf\u6b21\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u53ef\u4ee5\u6267\u884c temp++ \u64cd\u4f5c\uff0c\u4ece\u800c\u907f\u514d\u4e86\u6570\u636e\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\u3002\u6b64\u5916\uff0c\u8fd8\u987b\u6ce8\u610f\uff0cvolatile 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