{"id":203667,"date":"2025-05-22T10:38:15","date_gmt":"2025-05-22T02:38:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203667\/"},"modified":"2025-05-22T10:38:15","modified_gmt":"2025-05-22T02:38:15","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e5%a4%9a%e7%ba%bf%e7%a8%8b%e6%a8%a1%e6%8b%9f%e5%85%ac%e5%b9%b3%e6%8a%a2%e7%a5%a8%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203667\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528\u591a\u7ebf\u7a0b\u6a21\u62df\u516c\u5e73\u62a2\u7968\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u5982\u4f55\u4f7f\u7528\u591a\u7ebf\u7a0b\u6a21\u62df\u516c\u5e73\u62a2\u7968\uff1f<\/h1>\n<p>\u76ee\u524d\u4e0a\u5df2\u7ecf\u6709\u5f88\u591a\u5173\u4e8e<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u7684\u6587\u7ae0\u4e86\uff0c\u81ea\u5df1\u5728\u521d\u6b21\u9605\u8bfb\u8fd9\u4e9b\u6587\u7ae0\u4e2d\uff0c\u4e5f\u89c1\u8bc6\u5230\u4e86\u5f88\u591a\u5b66\u4e60\u601d\u8def\uff1b\u90a3\u4e48\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u5982\u4f55\u4f7f\u7528\u591a\u7ebf\u7a0b\u6a21\u62df\u516c\u5e73\u62a2\u7968\uff1f\u300b<\/span>\uff0c\u4e5f\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\uff0c\u5982\u679c\u9605\u8bfb\u5b8c\u540e\u771f\u7684\u5bf9\u4f60\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u6709\u5e2e\u52a9\uff0c\u6b22\u8fce\u52a8\u52a8\u624b\u6307\uff0c\u8bc4\u8bba\u7559\u8a00\u5e76\u5206\u4eab~<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241117\/17318070346739473ac345c.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u591a\u7ebf\u7a0b\u6a21\u62df\u516c\u5e73\u62a2\u7968<\/strong><\/p>\n<p>\u4e3a\u4e86\u89e3\u51b3\u5982\u4f55\u6a21\u62df 100 \u4e2a\u4eba\u62a2 10 \u5f20\u7968\u7684\u95ee\u9898\uff0c\u9700\u8981\u786e\u4fdd\u516c\u5e73\u6027\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u53ef\u4f9b\u53c2\u8003\u7684\u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n<ul>\n<li><strong>concurrenthashset<\/strong> \u548c <strong>atomicinteger<\/strong>\uff1aconcurrenthashset \u662f\u4e00\u4e2a\u5e76\u53d1\u7ebf\u7a0b\u5b89\u5168\u7684\u96c6\u5408\uff0c\u800c atomicinteger \u662f\u4e00\u4e2a\u539f\u5b50\u6027\u7684\u6574\u6570\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 concurrenthashset \u6765\u8bb0\u5f55\u5df2\u552e\u51fa\u7684\u7968\u53f7\uff0c\u5e76\u4f7f\u7528 atomicinteger \u6765\u8bb0\u5f55\u5269\u4f59\u7968\u6570\u3002\u5f53\u7ebf\u7a0b\u62a2\u7968\u65f6\uff0c\u5b83\u4eec\u53ef\u4ee5\u5c1d\u8bd5\u4ece concurrenthashset \u4e2d\u83b7\u53d6\u4e00\u4e2a\u968f\u673a\u7968\u53f7\uff0c\u5e76\u4e14\u5982\u679c\u7968\u53f7\u53ef\u7528\uff0c\u5219\u4f7f\u7528 atomicinteger \u9012\u51cf\u5269\u4f59\u7968\u6570\u3002<\/li>\n<li><strong>\u516c\u5e73\u9501<\/strong>\uff1a\u516c\u5e73\u9501\u662f\u4e00\u79cd\u9501\uff0c\u5b83\u53ef\u4ee5\u4fdd\u8bc1\u7ebf\u7a0b\u4ee5\u7533\u8bf7\u9501\u7684\u987a\u5e8f\u83b7\u53d6\u9501\u3002\u5728\u62a2\u7968\u573a\u666f\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 reentrantlock \u548c\u5176 fair=true \u9009\u9879\u6765\u5b9e\u73b0\u516c\u5e73\u9501\u3002\u8fd9\u6837\uff0c\u7ebf\u7a0b\u5c06\u6309\u987a\u5e8f\u83b7\u53d6\u9501\uff0c\u4ee5\u786e\u4fdd\u516c\u5e73\u6027\u3002\u4ee5\u4e0b\u4ee3\u7801\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528\u516c\u5e73\u9501\u5b9e\u73b0\u62a2\u7968\uff1a<\/li>\n<\/ul>\n<pre>import java.util.concurrent.locks.ReentrantLock;\n\npublic class FairTicket\u6436\u7968 {\n    private static final int TOTAL_TICKETS = 10;\n    private static final int TOTAL_USERS = 100;\n\n    \/\/ \u4f7f\u7528\u516c\u5e73\u9501\n    private static ReentrantLock fairLock = new ReentrantLock(true);\n\n    public static void main(String[] args) {\n        for (int i = 0; i &lt; TOTAL_USERS; i++) {\n            new Thread(() -&gt; {\n                fairLock.lock();\n                try {\n                    if (TOTAL_TICKETS &gt; 0) {\n                        System.out.println(\"\u7528\u6237\" + Thread.currentThread().getName() + \"\u62a2\u5230\u4e86\u7b2c\" + TOTAL_TICKETS + \"\u5f20\u7968\");\n                        TOTAL_TICKETS--;\n                    } else {\n                        System.out.println(\"\u7528\u6237\" + Thread.currentThread().getName() + \"\u6ca1\u6709\u62a2\u5230\u7968\");\n                    }\n                } finally {\n                    fairLock.unlock();\n                }\n            }).start();\n        }\n    }\n}<\/pre>\n<p>\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300a\u5982\u4f55\u4f7f\u7528\u591a\u7ebf\u7a0b\u6a21\u62df\u516c\u5e73\u62a2\u7968\uff1f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4f7f\u7528\u591a\u7ebf\u7a0b\u6a21\u62df\u516c\u5e73\u62a2\u7968\uff1f \u76ee&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-203667","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203667","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=203667"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203667\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203667"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203667"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203667"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}