{"id":1353,"date":"2024-08-26T10:53:24","date_gmt":"2024-08-26T02:53:24","guid":{"rendered":"http:\/\/www.spiceandwolf.com.cn\/?p=1353"},"modified":"2026-03-16T19:32:00","modified_gmt":"2026-03-16T11:32:00","slug":"juc-interview","status":"publish","type":"post","link":"http:\/\/www.spiceandwolf.com.cn\/index.php\/juc-interview\/","title":{"rendered":"java\u5e76\u53d1\u7f16\u7a0b\u57fa\u7840\u9762\u8bd5\u9898"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u8bf4\u8bf4\u504f\u5411\u9501\u3001\u8f7b\u91cf\u7ea7\u9501\u548c\u91cd\u91cf\u7ea7\u9501<\/h2>\n\n\n\n<h4 class=\"wp-block-heading\">synchronized\u57fa\u672c\u52a0\u9501\u65b9\u5f0f<\/h4>\n\n\n\n<p>\u90fd\u662fjava\u540c\u6b65\u5173\u952e\u5b57synchronized\u7684\u9501\u673a\u5236\uff0csynchronized\u662f\u5728jvm\u865a\u62df\u673a\u5c42\u9762\u5b9e\u73b0\u7684\u5e76\u53d1\u63a7\u5236\uff0c\u662f\u57fa\u4e8e\u9501\u5bf9\u8c61\u8fdb\u884c\u7684\u52a0\u9501\u89e3\u9501\uff0c\u7f16\u8bd1\u5668\u4f1a\u5728synchronized\u540c\u6b65\u4ee3\u7801\u5757\u524d\u540e\u63d2\u5165monitorenter\u548cmonitorexit\u6307\u4ee4\uff0c\u5f53\u865a\u62df\u673a\u6267\u884c\u5230monitorenter\u65f6\u4f1a\u5c1d\u8bd5\u83b7\u53d6\u9501\uff0c\u6267\u884c\u5230monitorexit\u65f6\u4f1a\u5c1d\u8bd5\u91ca\u653e\u9501\uff0c\u8fd9\u5c31\u662fsynchronized\u7684\u57fa\u672c\u9501\u673a\u5236\u3002<br>synchronized\u6709\u4e09\u79cd\u9501\u673a\u5236\uff0c\u5176\u4e2d\u8f7b\u91cf\u7ea7\u9501\u548c\u504f\u5411\u9501\u662fjava 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class=\"wp-block-list\">\n<li>\u5728\u7ebf\u7a0b\u6808\u5e27\u4e2d\u589e\u52a0\u9501\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li>\u5224\u65ad\u662f\u5426\u662f\u504f\u5411\u9501\u3002\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u65e0\u9501\uff0cCAS\u5c1d\u8bd5\u83b7\u53d6\u9501\u3002<\/li>\n\n\n\n<li>\u4e0d\u662f\u504f\u5411\u9501\uff0c\u8d70\u9501\u5347\u7ea7\u64cd\u4f5c\u3002<\/li>\n\n\n\n<li>\u662f\u504f\u5411\u9501\uff0c\u5219\u5224\u65admarkword\u662f\u5426\u504f\u5411\u5f53\u524d\u7ebf\u7a0b\n<ul class=\"wp-block-list\">\n<li>\u662f\uff0c\u83b7\u53d6\u9501\u3002<\/li>\n\n\n\n<li>\u4e0d\u662f\uff08\u8bf4\u660e\u5b58\u5728\u9501\u7ade\u4e89\uff09\uff0c\u8d70\u64a4\u9500\u504f\u5411\u9501\u6d41\u7a0b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u64a4\u9500\u9501\u6d41\u7a0b\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5728\u5168\u5c40\u5b89\u5168\u70b9\uff0c\u6682\u505c\u6301\u9501\u7ebf\u7a0b\u3002<\/li>\n\n\n\n<li>\u5224\u65ad\u6301\u9501\u7ebf\u7a0b\u662f\u5426\u5b58\u6d3b\u3002\n<ul class=\"wp-block-list\">\n<li>\u5426\uff0c\u5c06\u5bf9\u8c61\u5934\u7f6e\u4e3a\u65e0\u9501\u72b6\u6001\uff0c\u5e76\u6839\u636e\u7ade\u4e89\u7684\u6fc0\u70c8\u7a0b\u5ea6\u51b3\u5b9a\u662f\u5426\u8fdb\u884c\u9501\u5347\u7ea7\uff08\u8f7b\u6216\u91cd\uff09\uff0c\u6700\u540e\u5524\u9192\u5176\u4ed6\u963b\u585e\u7ebf\u7a0b\u3002<\/li>\n\n\n\n<li>\u662f\uff0c\u5219\u8fdb\u884c\u9501\u5347\u7ea7\uff08\u8f7b\u6216\u91cd\uff09\uff0c\u5524\u9192\u6301\u9501\u7ebf\u7a0b\u5728\u5185\u7684\u963b\u585e\u7ebf\u7a0b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u8f7b\u91cf\u7ea7\u9501\u3002\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528\u573a\u666f\u3002\u5b58\u5728\u9501\u7ade\u4e89\uff0c\u4f46\u662f\u9501\u7ade\u4e89\u8f83\u5c11\u4e14\u7ade\u4e89\u65f6\u95f4\u4e0d\u957f\u7684\u60c5\u51b5\u3002<\/li>\n\n\n\n<li>\u7279\u70b9\u3002\u5728\u57fa\u672c\u4e0a\u6ca1\u6709\u7ade\u4e89\u51b2\u7a81\u65f6\u6027\u80fd\u8f83\u597d\uff0c\u907f\u514d\u4e86\u963b\u585e\u524d\u540e\u4e0a\u4e0b\u6587\u5207\u6362\u7684\u65f6\u95f4\u3002<\/li>\n\n\n\n<li>\u83b7\u53d6\u9501\u6d41\u7a0b\u3002\n<ul class=\"wp-block-list\">\n<li>\u5728\u7ebf\u7a0b\u6808\u5e27\u4e2d\u6dfb\u52a0\u9501\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li>\u5c06\u9501\u5bf9\u8c61\u5934\u4e2d\u7684Markword\uff08\u5982\u679c\u9501\u88ab\u5176\u4ed6\u7ebf\u7a0b\u6301\u6709\uff0c\u901a\u8fc7\u6307\u9488\u627e\u5230\u6808\u5e27\u4e2d\u7684\u9501\u8bb0\u5f55\u540e\uff0c\u4ece\u9501\u8bb0\u5f55\u4e2d\u83b7\u53d6\uff09\u5b58\u50a8\u5230\u9501\u8bb0\u5f55\u4e2d\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528CAS\u64cd\u4f5c\u5c1d\u8bd5\u5c06\u9501\u5bf9\u8c61\u5934\u7684Markword\u66ff\u6362\u4e3a\u9501\u8bb0\u5f55\u7684\u5730\u5740\u3002\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u6210\u529f\uff0c\u5219\u5f53\u524d\u7ebf\u7a0b\u83b7\u53d6\u9501\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u5931\u8d25\uff0c\u8868\u793a\u5176\u4ed6\u7ebf\u7a0b\u6301\u6709\u9501\uff0c\u4fbf\u901a\u8fc7\u81ea\u65cb\u5c1d\u8bd5\u83b7\u53d6\u9501\u3002\u81ea\u65cb\u4e00\u5b9a\u6b21\u6570\u540e\u4ecd\u6ca1\u6709\u83b7\u53d6\u9501\uff0c\u5219\u4fee\u6539\u9501\u6807\u5fd7\u4f4d\uff0c\u81a8\u80c0\u4e3a\u91cd\u91cf\u7ea7\u9501\uff0c\u5f53\u524d\u7ebf\u7a0b\u963b\u585e\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u91ca\u653e\u9501\u6d41\u7a0b\u3002\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528CAS\u5c1d\u8bd5\u5c06\u9501\u8bb0\u5f55\u4e2d\u7684markword\u66ff\u6362\u56de\u5bf9\u8c61\u5934\u4e2d\u3002\n<ul class=\"wp-block-list\">\n<li>\u6210\u529f\u3002\u91ca\u653e\u9501\uff0c\u5524\u9192\u5176\u4ed6\u7ebf\u7a0b\u3002<\/li>\n\n\n\n<li>\u5931\u8d25\u3002\u8bf4\u660e\u9501\u5df2\u7ecf\u81a8\u80c0\u4e3a\u91cd\u91cf\u7ea7\u9501\uff0c\u540c\u6837\u91ca\u653e\u9501\uff0c\u5524\u9192\u5176\u4ed6\u7ebf\u7a0b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u91cd\u91cf\u7ea7\u9501\u3002\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528\u573a\u666f\u3002\u591a\u7ebf\u7a0b\u7ade\u4e89\u9891\u7e41\u7684\u573a\u666f\u3002<\/li>\n\n\n\n<li>\u7279\u70b9\u3002\n<ul class=\"wp-block-list\">\n<li>\u7ade\u4e89\u5931\u8d25\u5373\u963b\u585e\u3002<\/li>\n\n\n\n<li>\u5b58\u5728\u4e0a\u4e0b\u6587\u5207\u6362\uff0c\u4f1a\u635f\u8017\u5e76\u53d1\u6027\u80fd\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u83b7\u53d6\u9501\u6d41\u7a0b\u3002\n<ul class=\"wp-block-list\">\n<li>\u5224\u65ad\u9501\u5bf9\u8c61\u7684monitor\u5bf9\u8c61\u7684owner\u662f\u5426\u4e3anull\u3002\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u662f\uff0c\u5219\u5c06monitor\u5bf9\u8c61\u7684owner\u4fee\u6539\u4e3a\u5f53\u524d\u7ebf\u7a0b\u5730\u5740\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u4e0d\u662f\uff0c\u5219\u5c06\u5f53\u524d\u7ebf\u7a0b\u653e\u5165EntryList\u961f\u5217\u4e2d\uff0c\u5e76\u963b\u585e\u5f53\u524d\u7ebf\u7a0b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u91ca\u653e\u9501\u6d41\u7a0b\u3002\n<ul class=\"wp-block-list\">\n<li>\u5c06owner\u7f6e\u4e3anull\uff0c\u5e76\u5524\u9192\u963b\u585e\u961f\u5217\u548c\u7b49\u5f85\u961f\u5217\u4e2d\u7684\u7ebf\u7a0b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u8bf4\u8bf4Lock\u548csynchronized<\/h2>\n\n\n\n<h4 class=\"wp-block-heading\">\u76f8\u540c\u70b9<\/h4>\n\n\n\n<p>Lock\u662fJUC\u4e2d\u7684\u4e00\u4e2a\u63a5\u53e3\uff0csynchronized\u662fjava\u7684\u4e00\u4e2a\u5e76\u53d1\u540c\u6b65\u5173\u952e\u5b57\u3002\u529f\u80fd\u4e0a\u6765\u8bf4\u90fd\u662f\u89e3\u51b3\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u7684\u5de5\u5177\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u533a\u522b<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b9e\u73b0\u65b9\u5f0f\u3002\n<ul class=\"wp-block-list\">\n<li>synchronized\u662fJVM\u5c42\u9762\u5b9e\u73b0\u7684\u9501\u540c\u6b65\u673a\u5236\u3002<\/li>\n\n\n\n<li>Lock\u662fJDK API\u5c42\u9762\u5b9e\u73b0\u7684\u9501\u540c\u6b65\u673a\u5236\uff0c\u53ef\u4ee5\u81ea\u5b9a\u4e49\u5b9e\u73b0\u7c7b\uff0c\u5178\u578b\u7684ReentrantLock\u5c31\u662f\u540c\u6b65\u5668AQS\u5b9e\u73b0\u7684\u540c\u6b65\u9501\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u52a0\u9501\u7c92\u5ea6\u3002\n<ul class=\"wp-block-list\">\n<li>synchronized\u52a0\u9501\u65b9\u5f0f\u6709\u4e09\u79cd\uff0c\u666e\u901a\u65b9\u6cd5\u3001\u9759\u6001\u65b9\u6cd5\u548c\u540c\u6b65\u4ee3\u7801\u5757\uff0c\u52a0\u9501\u7c92\u5ea6\u5206\u522b\u662f\u65b9\u6cd5\u4ee3\u7801\u548c\u5305\u56ca\u7684\u540c\u6b65\u4ee3\u7801\u5757\u4e2d\u7684\u4ee3\u7801\u3002<\/li>\n\n\n\n<li>Lock\u52a0\u9501\u7c92\u5ea6\u5219\u53d6\u51b3\u4e8elock()\u548cunlock()\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5e94\u7528\u7075\u6d3b\u6027\u3002\n<ul class=\"wp-block-list\">\n<li>Lock\u53ef\u4f7f\u7528\u975e\u963b\u585e\u52a0\u9501\u65b9\u5f0f\uff0c\u800cSynchronized\u4e0d\u884c\u3002<\/li>\n\n\n\n<li>Lock\u53ef\u81ea\u884c\u51b3\u5b9a\u52a0\u9501\u89e3\u9501\u65f6\u673a\uff0c\u800cSynchronized\u5219\u662f\u5728\u8fdb\u5165\u79bb\u5f00\u540c\u6b65\u4ee3\u7801\u5757\u65f6\u81ea\u52a8\u8fdb\u884c\u52a0\u9501\u89e3\u9501\u3002<\/li>\n\n\n\n<li>\u53ef\u6269\u5c55\u6027\u4e0aLock\u8fdc\u4f18\u4e8esynchronized\uff0cLock\u53ef\u4ee5\u5b9e\u73b0\u516c\u5e73\u9501\u3001\u975e\u516c\u5e73\u9501\u3001\u81ea\u65cb\u9501\u3001\u8bfb\u5199\u9501\u6765\u5e94\u5bf9\u5404\u79cd\u4f7f\u7528\u573a\u666f\uff0c\u800csynchronized\u5b9e\u73b0\u5219\u662f\u8026\u5408\u5230\u4e86JVM\u4e2d\uff0c\u6ca1\u6709\u6269\u5c55\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u6027\u80fd\u4e0a\u76f8\u5dee\u65e0\u51e0\u3002\n<ul class=\"wp-block-list\">\n<li>synchronized\u5f15\u5165\u4e86\u504f\u5411\u9501\u3001\u8f7b\u91cf\u7ea7\u9501\u548c\u9501\u5347\u7ea7\u673a\u5236\u6765\u5b9e\u73b0\u6027\u80fd\u4f18\u5316\u3002<\/li>\n\n\n\n<li>Lock\u5219\u53ef\u4ee5\u901a\u8fc7\u81ea\u65cb\u9501\u6765\u5b9e\u73b0\u6027\u80fd\u4f18\u5316\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u9501\uff08ReentrantLock\uff09\u7684\u5b9e\u73b0\u539f\u7406\uff08AQS\uff09<\/h2>\n\n\n\n<p>JUC\u4e2d\u5f88\u591a\u7c7b\u90fd\u662f\u57fa\u4e8eAQS\u5b9e\u73b0\u7684\u540c\u6b65\u673a\u5236\uff0cDoug Lea\u5e0c\u671b\u5b83\u80fd\u4f5c\u4e3a\u6784\u5efa\u9501\u6216\u5176\u4ed6\u540c\u6b65\u7ec4\u4ef6\u7684\u57fa\u7840\u6846\u67b6\u6765\u5b9e\u73b0\u5927\u90e8\u5206\u540c\u6b65\u9700\u6c42\u3002AQS\u662f\u57fa\u4e8e\u6a21\u7248\u65b9\u6cd5\u53bb\u8bbe\u8ba1\u5b9e\u73b0\u7684\u3002<\/p>\n\n\n\n<p>AQS\u89e3\u51b3\u4e86\u56db\u4e2a\u6838\u5fc3\u95ee\u9898\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4e92\u65a5\u53d8\u91cf\u7684\u7684\u8bbe\u8ba1\u3002\u901a\u8fc7\u5355\u4e2aint\u7c7b\u578b\u53d8\u91cf\u5b9e\u73b0\uff0c\u5e76\u4e14\u901a\u8fc7volatile\u4fdd\u8bc1\u5176\u53ef\u89c1\u6027\uff0c\u57fa\u4e8eCAS\u64cd\u4f5c\u4fdd\u8bc1\u6570\u503c\u64cd\u4f5c\u7684\u539f\u5b50\u6027\u3002\u4e00\u822c\u5b9e\u73b0\u601d\u8def\u662f0\u8868\u793a\u6ca1\u6709\u7ebf\u7a0b\u6301\u6709\u9501\uff0c\u5927\u4e8e0\u8868\u793a\u5b58\u5728\u7ebf\u7a0b\u6301\u6709\u9501\uff0c\u503c\u662f\u91cd\u5165\u6b21\u6570\u3002<\/li>\n\n\n\n<li>\u5982\u4f55\u5b9e\u73b0\u7ebf\u7a0b\u7684\u7b49\u5f85\u548c\u5524\u9192\u3002\n<ul class=\"wp-block-list\">\n<li>\u540c\u6b65\u961f\u5217\u3002AQS\u4f9d\u8d56\u540c\u6b65\u961f\u5217\uff08\u4e00\u4e2a\u53cc\u5411\u961f\u5217\uff09\u6765\u5b8c\u6210\u540c\u6b65\u72b6\u6001\u7684\u7ba1\u7406\u3002\n<ul class=\"wp-block-list\">\n<li>\u5f53\u7ebf\u7a0b\u83b7\u53d6\u540c\u6b65\u72b6\u6001\u5931\u8d25\u65f6\uff0c\u4f1a\u57fa\u4e8e\u5f53\u524d\u7ebf\u7a0b\u53ca\u7b49\u5f85\u72b6\u6001\u521b\u5efa\u4e00\u4e2a\u8282\u70b9\u5e76\u63d2\u5165\u5230\u540c\u6b65\u961f\u5217\u7684\u961f\u5c3e\uff0c\u5e76\u963b\u585e\u5f53\u524d\u7ebf\u7a0b\u3002<\/li>\n\n\n\n<li>\u5f53\u6301\u6709\u540c\u6b65\u72b6\u6001\u7684\u7ebf\u7a0b\u91ca\u653e\u540c\u6b65\u72b6\u6001\u65f6\uff0c\u4f1a\u5524\u9192\u5934\u8282\u70b9\u7684\u540e\u7ee7\u8282\u70b9\uff0c\u5e76\u5c1d\u8bd5\u8ba9\u540e\u7ee7\u8282\u70b9\u83b7\u53d6\u540c\u6b65\u72b6\u6001\uff0c\u6210\u529f\u5219\u5c06\u5934\u8282\u70b9\u79fb\u51fa\u961f\u5217\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u901a\u8fc7JUC\u7684\u540c\u6b65\u7c7bLockSupport\u5b9e\u73b0\u5e95\u5c42\u7684\u7b49\u5f85\u548c\u5524\u9192\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u7ade\u4e89\u7684\u516c\u5e73\u6027\u3002\n<ul class=\"wp-block-list\">\n<li>\u975e\u516c\u5e73\u3002\u5f53\u7ebf\u7a0b\u5c1d\u8bd5\u83b7\u53d6\u540c\u6b65\u72b6\u6001\u65f6\u4f1a\u8ba9\u5f53\u524d\u7ebf\u7a0b\u5c1d\u8bd5\u83b7\u53d6\u4e00\u6b21\u540c\u6b65\u72b6\u6001\uff0c\u5982\u679c\u5931\u8d25\u4e86\u5219\u63d2\u5165\u5230\u540c\u6b65\u961f\u5217\u4e2d\uff0c\u5982\u679c\u6210\u529f\u4e86\u5219\u76f4\u63a5\u6267\u884c\u7ebf\u7a0b\u903b\u8f91\u3002<\/li>\n\n\n\n<li>\u516c\u5e73\u9501\u3002\u5f53\u7ebf\u7a0b\u5c1d\u8bd5\u83b7\u53d6\u540c\u6b65\u72b6\u6001\u65f6\u8ba9\u5176\u76f4\u63a5\u63d2\u5165\u5230\u540c\u6b65\u961f\u5217\uff0c\u4e0d\u4f1a\u8fdb\u884c\u4e00\u6b21\u540c\u6b65\u72b6\u6001\u83b7\u53d6\u7684\u5c1d\u8bd5\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u53ef\u91cd\u5165\u6027\u3002\u53ef\u91cd\u5165\u6027\u9700\u8981\u6839\u636etryAcquire\u7b49\u62bd\u8c61\u65b9\u6cd5\u7684\u5177\u4f53\u5b9e\u73b0\u6765\u51b3\u5b9a\uff0c\u4e00\u822c\u662f\u57fa\u4e8estate\u548cexclusiveOwnerThread\u4e24\u4e2a\u6210\u5458\u53d8\u91cf\u6765\u6784\u7b51\u53ef\u91cd\u5165\u6027\u903b\u8f91\u3002\n<ul class=\"wp-block-list\">\n<li>\u53ef\u91cd\u5165\u4e00\u822c\u903b\u8f91\u3002\u5f53state\u5927\u4e8e0\u65f6\uff0c\u5982\u679c\u5f53\u524d\u7ebf\u7a0b\u7b49\u4e8eexclusiveOwnerThread\uff0c\u57fa\u4e8e\u91cd\u5165\u6b21\u6570\u7d2f\u8ba1state\u3002<\/li>\n\n\n\n<li>\u4e0d\u53ef\u91cd\u5165\uff08\u57fa\u4e8eAQS\u7ed9\u7684\u6a21\u7248\u65b9\u6cd5\u4e0d\u80fd\u5b9e\u73b0\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">AQS\u4e3a\u4ec0\u4e48\u91c7\u7528\u53cc\u5411\u961f\u5217\uff1f<\/h2>\n\n\n\n<p>\u53cc\u5411\u961f\u5217\u5bf9\u6bd4\u666e\u901a\u961f\u5217\u7684\u597d\u5904\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u53cc\u5411\u961f\u5217\u5bf9\u6bd4\u666e\u901a\u961f\u5217\u591a\u4e86\u4e00\u4e2a\u6307\u5411\u524d\u7eed\u8282\u70b9\u7684\u6307\u9488\u3002\n<ul class=\"wp-block-list\">\n<li>\u80fd\u76f4\u63a5\u83b7\u53d6\u76f4\u63a5\u524d\u9a71\u8282\u70b9\u3002<\/li>\n\n\n\n<li>\u80fd\u8fdb\u884c\u524d\u5e8f\u904d\u5386\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u53cc\u5411\u961f\u5217\u80fd\u5728\u4efb\u610f\u8282\u70b9\u7684\u63d2\u5165\u6216\u5220\u9664\u76f4\u63a5\u524d\u9a71\u8282\u70b9\u548c\u76f4\u63a5\u540e\u7ee7\u8282\u70b9\uff0c\u4e14\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(1)\u3002<\/li>\n<\/ul>\n\n\n\n<p>AQS\u5728\u54ea\u4e9b\u5730\u65b9\u4f7f\u7528\u4e86\u4ee5\u4e0a\u7279\u6027\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>acquireQueued\u65b9\u6cd5\u4e2d\uff0c\u5728\u81ea\u65cb\u4f53\u4e2d\u9700\u8981<strong><em>\u83b7\u53d6\u5f53\u524d\u8282\u70b9\u7684\u524d\u9a71\u8282\u70b9<\/em><\/strong>\uff0c\u5224\u65ad\u524d\u9a71\u8282\u70b9\u662f\u5426\u662f\u5934\u8282\u70b9\uff0c\u5982\u679c\u662f\u5934\u8282\u70b9\u5c31\u5c1d\u8bd5\u83b7\u53d6\u540c\u6b65\u72b6\u6001\uff0c\u5982\u679c\u4e0d\u662f\u5934\u8282\u70b9\uff0c\u5219\u7ee7\u7eed\u963b\u585e\u3002<\/li>\n\n\n\n<li>shouldParkAfterFailedAcquire\u65b9\u6cd5\u4e2d\uff0c\u4f1a\u5224\u65ad\u5f53\u524d\u8282\u70b9\u7684\u524d\u9a71\u8282\u70b9\u662f\u5426\u662fcancelled\u72b6\u6001\uff0c\u5982\u679c\u662f\u5219\u9700\u8981<strong><em>\u5220\u9664\u524d\u9a71\u8282\u70b9<\/em><\/strong>\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u8bfb\u5199\u9501\u7684\u5b9e\u73b0\u539f\u7406<\/h2>\n\n\n\n<p>\u8bfb\u5199\u9501\u662f\u57fa\u4e8eAQS\u540c\u6b65\u5668\u5b9e\u73b0\u7684\u8bfb\u5199\u540c\u6b65\u7ec4\u4ef6\uff0c\u5b83\u5b9e\u73b0\u4e86\u5171\u4eab\u8bfb\u3001\u8bfb\u5199\u4e92\u65a5\u548c\u5199\u5199\u4e92\u65a5\u7684\u8bfb\u5199\u673a\u5236\u3002\u89e3\u51b3\u4e86\u4e09\u4e2a\u6838\u5fc3\u95ee\u9898\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8bfb\u5199\u72b6\u6001\u7684\u8bbe\u8ba1\u3002\u57fa\u4e8eAQS\u540c\u6b65\u72b6\u6001\u5b9e\u73b0\u4e86\u8bfb\u5199\u72b6\u6001\u7684\u8868\u793a\uff1a\n<ul class=\"wp-block-list\">\n<li>\u7528state\u53d8\u91cf\u7684\u9ad816\u4f4d\u8868\u793a\u8bfb\u72b6\u6001\u3002\u901a\u8fc7\u5411\u53f316\u4f4d\u4f4d\u8fd0\u7b97\u5f97\u5230\u8bfb\u72b6\u6001\u503c\uff1b\u5171\u4eab\u8bfb\u65f6\u8ba1\u7b97\u6240\u6709\u7ebf\u7a0b\u83b7\u53d6\u8bfb\u72b6\u6001\u6b21\u6570\u7684\u603b\u548c\u3002<\/li>\n\n\n\n<li>\u7528state\u53d8\u91cf\u7684\u4f4e16\u4f4d\u8868\u793a\u5199\u72b6\u6001\u3002\u901a\u8fc7\u548c0x0000FFFF\u4f5c&amp;\u8fd0\u7b97\u5f97\u5230\u5199\u72b6\u6001\u503c\uff1b\u5f53\u5199\u72b6\u6001\u5927\u4e8e0\u65f6\uff0c\u901a\u8fc7\u5199\u72b6\u6001\u503c\u83b7\u53d6\u5199\u9501\u7684\u91cd\u5165\u6b21\u6570\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u8bfb\u9501\u7684\u83b7\u53d6\u4e0e\u91ca\u653e\u3002\n<ul class=\"wp-block-list\">\n<li>\u83b7\u53d6\u3002\u5982\u679c\u5176\u4ed6\u7ebf\u7a0b\u5df2\u7ecf\u83b7\u53d6\u5199\u9501\uff0c\u5219\u83b7\u53d6\u5931\u8d25\uff0c\u8fdb\u5165\u540c\u6b65\u961f\u5217\uff1b\u5982\u679c\u5f53\u524d\u7ebf\u7a0b\u5df2\u7ecf\u83b7\u5f97\u5199\u9501\u6216\u65e0\u7ebf\u7a0b\u6301\u6709\u5199\u9501\uff0c\u5219\u5f53\u524d\u7ebf\u7a0b\u6210\u529f\u83b7\u53d6\u8bfb\u72b6\u6001\uff0c\u8bfb\u72b6\u6001\u589e\u52a0\u3002<\/li>\n\n\n\n<li>\u91ca\u653e\u3002\u51cf\u5c11\u8bfb\u72b6\u6001\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5199\u9501\u7684\u83b7\u53d6\u4e0e\u91ca\u653e\uff08\u4e0e\u4e00\u822c\u6392\u4ed6\u9501\u7c7b\u4f3c\uff09\u3002\n<ul class=\"wp-block-list\">\n<li>\u83b7\u53d6\u3002\u5982\u679c\u6ca1\u6709\u7ebf\u7a0b\u6301\u6709\u5199\u9501\u4e14\u65e0\u7ebf\u7a0b\u6301\u6709\u8bfb\u9501\uff0c\u5219\u5c1d\u8bd5\u83b7\u53d6\u5199\u9501\uff0c\u6210\u529f\u5219\u589e\u52a0\u5199\u72b6\u6001\uff0c\u5931\u8d25\u5219\u8fdb\u5165\u540c\u6b65\u961f\u5217\u3002<\/li>\n\n\n\n<li>\u91ca\u653e\u3002\u51cf\u5c11\u5199\u72b6\u6001\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">\u9501\u964d\u7ea7\u662f\u5982\u4f55\u5b9e\u73b0\u7684<\/h2>\n\n\n\n<p>\u9501\u964d\u7ea7\u662f\u83b7\u53d6\u5199\u9501\u7684\u7ebf\u7a0b\u76f4\u63a5\u964d\u7ea7\u5230\u8bfb\u9501\u7684\u8fc7\u7a0b\u3002<\/p>\n\n\n\n<p>\u9700\u8981\u901a\u8fc7\u83b7\u53d6\u5199\u9501-&gt;\u83b7\u53d6\u8bfb\u9501-&gt;\u91ca\u653e\u5199\u9501\u7684\u6d41\u7a0b\u6765\u5b9e\u73b0\u3002<\/p>\n\n\n\n<p>\u5728\u5199\u9501\u91ca\u653e\u540e\u518d\u83b7\u53d6\u8bfb\u9501\u662f\u4e0d\u884c\u7684\uff0c\u539f\u56e0\u5728\u4e8e\u4e3a\u4e86\u4fdd\u8bc1\u6570\u636e\u64cd\u4f5c\u7684\u539f\u5b50\u6027\u548c\u53ef\u89c1\u6027\uff0c\u4e0d\u540c\u7ebf\u7a0b\u95f4\u7684\u8bfb\u5199\u64cd\u4f5c\u662f\u4e92\u65a5\u7684\uff0c\u5373\u5728\u8fdb\u884c\u8bfb\u64cd\u4f5c\u65f6\u5176\u4ed6\u7ebf\u7a0b\u4e0d\u80fd\u8fdb\u884c\u5199\u64cd\u4f5c\uff0c\u800c\u5728\u8fdb\u884c\u5199\u64cd\u4f5c\u65f6\u5176\u4ed6\u7ebf\u7a0b\u4e0d\u80fd\u8fdb\u884c\u8bfb\u64cd\u4f5c\u3002\u6240\u4ee5\u4e3a\u4e86\u907f\u514d\u5728\u5199\u9501\u91ca\u653e\u540e\u5176\u4ed6\u7ebf\u7a0b\u62a2\u5360\u5230\u5199\u9501\uff0c\u5bfc\u81f4\u83b7\u53d6\u8bfb\u9501\u540e\u8bfb\u51fa\u7684\u6570\u636e\u4e0e\u5199\u64cd\u4f5c\u65f6\u4e0d\u4e00\u81f4\uff0c\u5c31\u9700\u8981\u5728\u6301\u6709\u5199\u9501\u7684\u540c\u65f6\u6765\u83b7\u53d6\u8bfb\u9501\uff0c\u4fdd\u8bc1\u6570\u636e\u8bfb\u53d6\u7684\u53ef\u89c1\u6027\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Condition\u7684\u5b9e\u73b0\u539f\u7406<\/h2>\n\n\n\n<p>condition\u662f\u57fa\u4e8eLock\u63a5\u53e3\u7684\u4e00\u79cd\u590d\u6570\u9501\u5b9e\u73b0\u673a\u5236\u3002\u4e3b\u8981\u529f\u80fd\u5305\u62ec\u4e3b\u52a8\u7b49\u5f85\u548c\u4e3b\u52a8\u5524\u9192\u3002\u6240\u4ee5\u5b9e\u73b0condition\u9700\u8981\u89e3\u51b3\u7684\u6838\u5fc3\u95ee\u9898\u6709\u4e8c\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5982\u4f55\u5b9e\u73b0\u590d\u6570\u9501\u673a\u5236\u3002\u5728Lock\u63a5\u53e3\u4e2d\u7ed9\u51fa\u4e86\u4e00\u4e2anewCondition()\u65b9\u6cd5\u7528\u4e8e\u8fd4\u56de\u4e00\u4e2aCondition\u5b9e\u73b0\u7c7b\u7684\u5b9e\u4f8b\uff0cCondition\u5b9e\u4f8b\u4f1a\u7ef4\u62a4\u4e00\u4e2a\u7b49\u5f85\u961f\u5217\uff0c\u8fd9\u5c31\u80fd\u901a\u8fc7\u521b\u5efa\u591a\u4e2aCondition\u5b9e\u4f8b\u6765\u8fbe\u5230\u590d\u6570\u9501\u7684\u76ee\u7684\u3002<\/li>\n\n\n\n<li>\u5982\u4f55\u5b9e\u73b0\u7b49\u5f85\u548c\u5524\u9192\u64cd\u4f5c\u3002\n<ul class=\"wp-block-list\">\n<li>\u7b49\u5f85\u961f\u5217\u3002AQS\u4f9d\u8d56Condition\u5b9e\u73b0\u7c7bConditionObject\u6765\u7ba1\u7406\u7ebf\u7a0b\u7684\u7b49\u5f85\u548c\u5524\u9192\u3002\n<ul class=\"wp-block-list\">\n<li>\u5f53\u83b7\u53d6\u9501\u7684\u7ebf\u7a0b\u65f6\u8c03\u7528await()\u65b9\u6cd5\u65f6\uff0c\u4f1a\u5c06\u5f53\u524d\u7ebf\u7a0b\u63d2\u5165\u7b49\u5f85\u961f\u5217\uff0c\u5982\u679c\u540c\u6b65\u961f\u5217\u4e2d\u5b58\u5728\u5f53\u524d\u7ebf\u7a0b\u7684\u8282\u70b9\uff0c\u5c06\u4f1a\u8282\u70b9\u79fb\u51fa\u540c\u6b65\u961f\u5217\uff0c\u6700\u540e\u963b\u585e\u5f53\u524d\u7ebf\u7a0b\u3002<\/li>\n\n\n\n<li>\u5f53\u5f53\u524d\u7ebf\u7a0b\u4ece\u7b49\u5f85\u961f\u5217\u5524\u9192\u65f6\uff0c\u4f1a\u4ece\u7b49\u5f85\u961f\u5217\u4e2d\u5220\u9664\uff0c\u5e76\u52a0\u5165\u540c\u6b65\u961f\u5217\u961f\u5c3e\uff0c\u7b49\u5f85\u83b7\u53d6\u540c\u6b65\u72b6\u6001\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Object\u76d1\u89c6\u5668\u548cCondition\u7684\u533a\u522b<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u76f8\u540c\u70b9\u3002\u90fd\u80fd\u5b9e\u73b0\u7ebf\u7a0b\u95f4\u7684\u7b49\u5f85\u5524\u9192\u64cd\u4f5c\uff0c\u662f\u89e3\u51b3\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u7684\u5de5\u5177\u3002<\/li>\n\n\n\n<li>\u4e0d\u540c\u70b9\u3002\n<ul class=\"wp-block-list\">\n<li>\u5b9e\u73b0\u65b9\u5f0f\u3002\n<ul class=\"wp-block-list\">\n<li>Object\u76d1\u89c6\u5668\u662f\u5728JVM\u5c42\u9762\u5b9e\u73b0\u7b49\u5f85\u5524\u9192\u673a\u5236\u7684\uff0c\u53ea\u662f\u5728Object\u7c7b\u4e0a\u63d0\u4f9b\u4e86\u65b9\u6cd5\u8c03\u7528\u63a5\u53e3\u3002<\/li>\n\n\n\n<li>Condition\u5219\u662f\u57fa\u4e8eJava API\u5b9e\u73b0\u7684\uff0c\u5e95\u5c42\u7684\u963b\u585e\u548c\u5524\u9192\u64cd\u4f5c\u5219\u662f\u8c03\u7528\u4e86LockSupport\u7684\u76f8\u5173\u65b9\u6cd5\u5b9e\u73b0\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u4f7f\u7528\u3002\n<ul class=\"wp-block-list\">\n<li>Object\u76d1\u89c6\u5668\u9700\u8981\u548cSynchronized\u5173\u952e\u5b57\u914d\u5408\u4f7f\u7528\uff0c\u53ea\u80fd\u57fa\u4e8eSynchronized\u52a0\u9501\u7684\u5bf9\u8c61\u53bb\u8fdb\u884c\u7b49\u5f85\u548c\u5524\u9192\u64cd\u4f5c\u3002<\/li>\n\n\n\n<li>Condition\u9700\u8981\u548cLock\u914d\u5408\u4f7f\u7528\uff0c\u53ef\u4ee5\u5728\u4e00\u4e2aLock\u5bf9\u8c61\u4e0a\u521b\u5efa\u5bf9\u4e2aCondition\u9501\u5bf9\u8c61\uff0c\u6bcf\u4e2a\u9501\u5bf9\u8c61\u7ef4\u62a4\u5404\u81ea\u7684\u7b49\u4ee3\u961f\u5217\uff0c\u9002\u7528\u4e8e\u66f4\u590d\u6742\u7684\u5e76\u53d1\u573a\u666f\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">ConcurrentHashMap\u5b9e\u73b0\u539f\u7406<\/h2>\n\n\n\n<p>ConcurrentHashMap\u662fJUC\u4e2d\u7684\u4e00\u4e2a\u7c7b\uff0c\u80fd\u5b9e\u73b0\u7ebf\u7a0b\u5b89\u5168\u7684\u6570\u636e\u8bfb\u5199\u64cd\u4f5c\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6570\u636e\u7ed3\u6784\u3002ConcurrentHashMap\u6570\u7ec4\u4e0e\u94fe\u8868\u548c\u7ea2\u9ed1\u6811\u7684\u65b9\u5f0f\u6765\u5b58\u50a8\u6570\u636e\u3002\u521d\u59cb\u5316\u65f6\u6570\u7ec4\u7684\u9ed8\u8ba4\u957f\u5ea6\u4e3a16\u3002\u56e0\u4e3a\u662f\u57fa\u4e8ekey\u7684hash\u503c\u8fdb\u884c\u7684\u5bfb\u5740\uff0c\u6240\u4ee5\u5fc5\u7136\u5b58\u5728hash\u51b2\u7a81\u95ee\u9898\uff0c\u4f7f\u7528\u4e86\u4e24\u79cd\u65b9\u5f0f\u6765\u89e3\u51b3hash\u51b2\u7a81\u3002\n<ul class=\"wp-block-list\">\n<li>\u518d\u54c8\u5e0c\u3002\u91c7\u7528XOR\uff08\u5f02\u6216\uff09\u7684\u65b9\u5f0f\u8fdb\u884c\u518d\u54c8\u5e0c\uff0c\u8ba9\u5143\u7d20\u5747\u5300\u5206\u5e03\u5728\u6570\u7ec4\u4e2d\uff0c\u964d\u4f4ehash\u51b2\u7a81\u7684\u53d1\u751f\u6982\u7387\u3002<\/li>\n\n\n\n<li>\u94fe\u5730\u5740\u6cd5\u3002\u5f53\u53d1\u751fhash\u51b2\u7a81\u65f6\uff0c\u5c06\u51b2\u7a81\u8282\u70b9\u7ef4\u62a4\u6210\u94fe\u8868\uff08\u6216\u7ea2\u9ed1\u6811\uff09\u6765\u89e3\u51b3hash\u51b2\u7a81\u3002\u5f53\u94fe\u8868\u7684\u957f\u5ea6\u5927\u4e8e\u7b49\u4e8e8\u65f6\uff0c\u4f1a\u8f6c\u6362\u6210\u7ea2\u9ed1\u6811\uff0c\u800c\u5f53\u94fe\u8868\u957f\u5ea6\u5c0f\u4e8e8\u65f6\uff0c\u5c06\u4f1a\u9000\u5316\u6210\u94fe\u8868\u8fdb\u884c\u5b58\u50a8\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u52a0\u9501\u673a\u5236\u3002\n<ul class=\"wp-block-list\">\n<li>jdk1.8\u53ca\u4e4b\u540e\uff0c\u4f7f\u7528CAS\u52a0synchronized\u65b9\u5f0f\u5b9e\u73b0\u5e76\u53d1\u63a7\u5236\u3002\n<ul class=\"wp-block-list\">\n<li>\u73b0\u5c06\u6570\u7ec4\u4e2d\u6bcf\u4e2a\u5143\u7d20\u6bd4\u505a\u4e00\u4e2a\u6876\u3002\u5f53\u6876\u4e3a\u7a7a\u65f6\uff0c\u91c7\u7528CAS\u65b9\u5f0f\u6dfb\u52a0\u589e\u52a0\u8282\u70b9\u3002<\/li>\n\n\n\n<li>\u5f53\u6876\u5143\u7d20\u603b\u6570\u5927\u4e8e1\u65f6\uff08\u5f62\u6210\u4e86\u94fe\u8868\u6216\u7ea2\u9ed1\u6811\u65f6\uff09\uff0c\u91c7\u7528synchronized\u7ed9\u94fe\u8868\u5934\uff08\u6839\u8282\u70b9\uff09\u5143\u7d20\u52a0\u9501\u7684\u65b9\u5f0f\u6765\u6dfb\u52a0\u6216\u5220\u9664\u8282\u70b9\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>jdk1.8\u4e4b\u524d\uff0c\u4f7f\u7528\u5206\u6bb5\u9501\u673a\u5236\u3002\n<ul class=\"wp-block-list\">\n<li>Segment\u7ee7\u627fReentrantLock\u3002\u5bf9\u8282\u70b9\u7684\u6570\u636e\u8fdb\u884c\u4fee\u6539\u65f6\uff0c\u4f1a\u5148\u83b7\u53d6\u5bf9\u8c61segment\u5143\u7d20\u7684\u9501\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Java\u7ebf\u7a0b\u6c60\u539f\u7406<\/h2>\n\n\n\n<p>\u7ebf\u7a0b\u6c60\u662f\u4e00\u79cd\u7528\u4e8e\u7ebf\u7a0b\u7ba1\u7406\u548c\u8c03\u5ea6\u7684\u5e38\u7528\u5e76\u53d1\u6846\u67b6\uff0c\u901a\u8fc7\u5bf9\u7ebf\u7a0b\u81ea\u52a8\u5316\u7684\u521b\u5efa\u548c\u7ba1\u7406\uff0c\u907f\u514d\u9891\u7e41\u521b\u5efa\u548c\u9500\u6bc1\u7ebf\u7a0b\u5e26\u6765\u7684\u5f00\u9500\uff0c\u8fbe\u5230\u63d0\u9ad8\u6027\u80fd\u548c\u54cd\u5e94\u901f\u5ea6\u7684\u76ee\u7684\u3002<\/p>\n\n\n\n<p>\u7ebf\u7a0b\u6c60\u5173\u952e\u53c2\u6570\u6709\uff1a\u6838\u5fc3\u7ebf\u7a0b\u6570\uff0c\u6700\u5927\u7ebf\u7a0b\u6570\uff0c\u7a7a\u95f2\u7ebf\u7a0b\u5b58\u6d3b\u65f6\u95f4\uff0c\u65f6\u95f4\u5355\u4f4d\uff0c\u963b\u585e\u961f\u5217\uff0c\u7ebf\u7a0b\u5de5\u5382\uff0c\u62d2\u7edd\u7b56\u7565\u3002<\/p>\n\n\n\n<p>\u7ebf\u7a0b\u6c60\u7684\u9075\u5faa\u4e00\u5957\u4efb\u52a1\u5904\u7406\u6d41\u7a0b\uff0c\u901a\u8fc7\u8fd9\u5957\u6d41\u7a0b\u6765\u5b9e\u73b0\u7ebf\u7a0b\u7684\u7ba1\u7406\u548c\u8c03\u5ea6\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4efb\u52a1\u6570\u5c0f\u4e8e\u6838\u5fc3\u7ebf\u7a0b\u6570\u65f6\uff0c\u65e0\u8bba\u7ebf\u7a0b\u662f\u5426\u7a7a\u95f2\uff0c\u90fd\u4f1a\u65b0\u521b\u5efa\u4e00\u4e2a\u7ebf\u7a0b\u6267\u884c\u4efb\u52a1\u3002<\/li>\n\n\n\n<li>\u4efb\u52a1\u6570\u5927\u4e8e\u6838\u5fc3\u7ebf\u7a0b\u6570\u65f6\uff0c\u65b0\u6765\u7684\u7ebf\u7a0b\u4efb\u52a1\u4f1a\u5230\u963b\u585e\u961f\u5217\u4e2d\u7b49\u5f85\uff0c\u6838\u5fc3\u7ebf\u7a0b\u4f1a\u4f9d\u6b21\u4ece\u963b\u585e\u961f\u5217\u4e2d\u53d6\u51fa\u4efb\u52a1\u6267\u884c\u3002<\/li>\n\n\n\n<li>\u5f53\u963b\u585e\u961f\u5217\u6ee1\uff0c\u7ebf\u7a0b\u6570\u5c0f\u4e8e\u6700\u5927\u7ebf\u7a0b\u6570\u65f6\uff0c\u4f1a\u521b\u5efa\u975e\u6838\u5fc3\u7ebf\u7a0b\u6267\u884c\u4efb\u52a1\u3002<\/li>\n\n\n\n<li>\u5f53\u963b\u585e\u961f\u5217\u6ee1\uff0c\u4e14\u7ebf\u7a0b\u6570\u8fbe\u5230\u6700\u5927\u7ebf\u7a0b\u6570\u65f6\uff0c\u8fd9\u65f6\u4f1a\u91c7\u7528\u62d2\u7edd\u7b56\u7565\u5904\u7406\u4efb\u52a1\u3002<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">\u6b7b\u9501\u5982\u4f55\u4ea7\u751f\u7684\uff1f\u8be5\u5982\u4f55\u907f\u514d\uff1f<\/h2>\n\n\n\n<p>\u6b7b\u9501\u662f\u591a\u4e2a\u7ebf\u7a0b\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u4e89\u593a\u540c\u4e00\u4e2a\u5171\u4eab\u8d44\u6e90\u9020\u6210\u7684\u76f8\u4e92\u7b49\u5f85\uff0c\u5728\u6ca1\u6709\u5916\u5728\u4eba\u5de5\u5e72\u9884\u7684\u60c5\u51b5\u4e0b\u4f1a\u4e00\u76f4\u963b\u585e\u7684\u73b0\u8c61\u3002<\/p>\n\n\n\n<p>\u9020\u6210\u6b7b\u9501\u7684\u6761\u4ef6\u6709\u56db\u4e2a\uff0c\u5f53\u8fd9\u56db\u4e2a\u6761\u4ef6\u540c\u65f6\u6ee1\u8db3\u65f6\u5c31\u4f1a\u4ea7\u751f\u6b7b\u9501\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4e92\u65a5\u6761\u4ef6\u3002\u5171\u4eab\u8d44\u6e90A\u548cB\u53ea\u80fd\u88ab\u4e00\u4e2a\u7ebf\u7a0b\u5360\u7528\u3002<\/li>\n\n\n\n<li>\u8bf7\u6c42\u548c\u4fdd\u6301\u6761\u4ef6\u3002\u7ebf\u7a0bT1\u5df2\u7ecf\u53d6\u5f97\u5171\u4eab\u8d44\u6e90A\uff0c\u5728\u7b49\u5f85\u5171\u4eab\u8d44\u6e90B\u7684\u65f6\u5019\uff0c\u4e0d\u91ca\u653e\u5171\u4eab\u8d44\u6e90A\u3002<\/li>\n\n\n\n<li>\u4e0d\u53ef\u62a2\u5360\u6761\u4ef6\u3002\u5176\u4ed6\u7ebf\u7a0b\u4e0d\u80fd\u5f3a\u884c\u62a2\u5360\u7ebf\u7a0bT1\u5360\u6709\u7684\u8d44\u6e90\u3002<\/li>\n\n\n\n<li>\u5faa\u73af\u7b49\u5f85\u6761\u4ef6\u3002\u7ebf\u7a0bT1\u7b49\u5f85\u7ebf\u7a0bT2\u5360\u6709\u7684\u8d44\u6e90\uff0c\u7ebf\u7a0bT2\u7b49\u5f85\u7ebf\u7a0bT1\u5360\u6709\u7684\u8d44\u6e90\u5c31\u662f\u5faa\u73af\u7b49\u5f85\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u6b7b\u9501\u4ea7\u751f\u540e\u9700\u8981\u8ba4\u4e3a\u5e72\u9884\u6765\u89e3\u51b3\u6b7b\u9501\u95ee\u9898\uff0c\u6bd4\u5982\u6740\u6389\u6b7b\u9501\u7ebf\u7a0b\u6216\u91cd\u542f\u670d\u52a1\u3002<\/p>\n\n\n\n<p>\u7f16\u7801\u9636\u6bb5\u53ea\u8981\u7834\u73af\u6b7b\u9501\u4ea7\u751f\u6761\u4ef6\u7684\u5176\u4e2d\u4e00\u4e2a\u5c31\u80fd\u907f\u514d\u6b7b\u9501\u4ea7\u751f\uff08\u4e92\u65a5\u6761\u4ef6\u6216\u56e0\u4e1a\u52a1\u9700\u6c42\u7834\u574f\u4e0d\u4e86\uff09\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u540c\u65f6\u7533\u8bf7\u6240\u6709\u8d44\u6e90\u3002<\/li>\n\n\n\n<li>\u5728\u7ebf\u7a0b\u83b7\u53d6\u8d44\u6e90A\u65f6\uff0c\u5982\u679c\u53d1\u73b0\u8d44\u6e90B\u5df2\u7ecf\u88ab\u5176\u4ed6\u7684\u7ebf\u7a0b\u62a2\u5360\u4e86\uff0c\u5219\u91ca\u653e\u9501\u8fdb\u884c\u7b49\u5f85\u3002<\/li>\n\n\n\n<li>\u6309\u5e8f\u7533\u8bf7\u8d44\u6e90\u3002\u5373\u5c06\u8d44\u6e90\u6309\u7279\u5b9a\u987a\u5e8f\u9700\u6392\u5217\uff0c\u53ea\u6709\u7533\u8bf7\u5230\u5c0f\u5e8f\u53f7\u8d44\u6e90\u540e\u624d\u80fd\u7533\u8bf7\u66f4\u5927\u5e8f\u53f7\u7684\u8d44\u6e90\uff0c\u8fd9\u6837\u5c31\u80fd\u7834\u73af\u6210\u73af\u6761\u4ef6\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u7f16\u7801\u8fc7\u7a0b\u4e2d\u7684\u5b9e\u9645\u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6ce8\u610f\u67b7\u9501\u987a\u5e8f\uff0c\u4fdd\u8bc1\u6bcf\u4e2a\u7ebf\u7a0b\u6309\u540c\u6837\u7684\u987a\u5e8f\u8fdb\u884c\u52a0\u9501\u3002<\/li>\n\n\n\n<li>\u6ce8\u610f\u52a0\u9501\u65f6\u9650\uff0c\u53ef\u4ee5\u7ed9\u9501\u52a0\u4e0a\u4e00\u4e2a\u8d85\u65f6\u65f6\u95f4\uff0c\u6301\u6709\u9501\u4e00\u6bb5\u65f6\u95f4\u540e\u4f1a\u81ea\u52a8\u91ca\u653e\u9501\u8d44\u6e90\u3002<\/li>\n\n\n\n<li>\u6b7b\u9501\u68c0\u67e5\u3002\u7f16\u7801\u8fc7\u7a0b\u4e2d\u63d0\u524d\u9884\u9632\u4ee3\u7801\u6b7b\u9501\uff0c\u5e76\u5728\u53d1\u73b0\u6b7b\u9501\u7684\u7b2c\u4e00\u65f6\u95f4\u5185\u8fdb\u884c\u89e3\u51b3\u3002<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">\u5982\u4f55\u7406\u89e3\u7ebf\u7a0b\u5b89\u5168\uff1f<\/h2>\n\n\n\n<p>\u7ebf\u7a0b\u5b89\u5168\u5c31\u662f\u5728\u4e0d\u505a\u4efb\u4f55\u4eba\u5de5\u5e72\u9884\u7684\u60c5\u51b5\u4e0b\uff0c\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u7a0b\u5e8f\u80fd\u6309\u9884\u671f\u903b\u8f91\u6267\u884c\uff0c\u8fd9\u6837\u7684\u7a0b\u5e8f\u6211\u4eec\u5c31\u79f0\u4e3a\u7ebf\u7a0b\u5b89\u5168\u7684\u3002<\/p>\n\n\n\n<p>\u7ebf\u7a0b\u5b89\u5168\u6027\u8868\u73b0\u5728\u4e09\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u53ef\u89c1\u6027\u3002\u53ef\u89c1\u6027\u662f\u6307\u5185\u5b58\u53ef\u89c1\u6027\uff0c\u5373\u7ebf\u7a0b\u5bf9\u5171\u4eab\u53d8\u91cf\u7684\u4fee\u6539\u5bf9\u5176\u4ed6\u7ebf\u7a0b\u662f\u5426\u7acb\u5373\u53ef\u89c1\u3002\n<ul class=\"wp-block-list\">\n<li>\u53ef\u89c1\u6027\u5728java\u5185\u5b58\u6a21\u578b\u4e2d\u7684\u4f53\u73b0\u3002java\u5185\u5b58\u6a21\u578b\u5c06\u5185\u5b58\u5206\u4e3a\u5171\u4eab\u5185\u5b58\u548c\u5de5\u4f5c\u5185\u5b58\uff0c\u5171\u4eab\u53d8\u91cf\u653e\u5728\u5171\u4eab\u5185\u5b58\u4e2d\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u5728\u81ea\u5df1\u7684\u5de5\u4f5c\u5185\u5b58\u5b58\u50a8\u5171\u4eab\u53d8\u91cf\u7684\u526f\u672c\u3002\u7ebf\u7a0b\u901a\u4fe1\u662f\u591a\u4e2a\u7ebf\u7a0b\u901a\u8fc7\u5bf9\u540c\u4e00\u4e2a\u5171\u4eab\u53d8\u91cf\u7684\u8bfb\u53d6\u548c\u4fee\u6539\u64cd\u4f5c\u5b9e\u73b0\u7684\u3002\u800c\u53ef\u89c1\u6027\u5c31\u662f\u5728\u4e00\u4e2a\u7ebf\u7a0b\u4fee\u6539\u4e86\u5de5\u4f5c\u5185\u5b58\u7684\u672c\u5730\u53d8\u91cf\u4e4b\u540e\uff0c\u5e76\u6ca1\u6709\u53ca\u65f6\u5237\u65b0\u5230\u5171\u4eab\u5185\u5b58\u7684\u5171\u4eab\u53d8\u91cf\u4e0a\uff0c\u5bfc\u81f4\u5176\u4ed6\u7ebf\u7a0b\u62ff\u5230\u7684\u4ecd\u7136\u662f\u5171\u4eab\u5185\u5b58\u4e0a\u7684\u65e7\u503c\u5bfc\u81f4\u7684\u3002<\/li>\n\n\n\n<li>\u5bfc\u81f4\u5185\u5b58\u53ef\u89c1\u6027\u7684\u539f\u56e0\u3002\n<ul class=\"wp-block-list\">\n<li>CPU\u9ad8\u901f\u7f13\u5b58\u3002<\/li>\n\n\n\n<li>CPU\u6307\u4ee4\u91cd\u6392\u3002<\/li>\n\n\n\n<li>\u7f16\u8bd1\u5668\u6307\u4ee4\u91cd\u6392\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u89e3\u51b3\u5185\u5b58\u53ef\u89c1\u6027\u95ee\u9898\u7684\u65b9\u6848\u3002volatile\uff0c\u9501\u7b49\u673a\u5236\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u539f\u5b50\u6027\u3002\u8868\u793a\u5728\u6267\u884c\u4e00\u4e2a\u6216\u4e00\u7cfb\u5217\u6307\u4ee4\u65f6\uff0c\u9700\u8981\u662f\u4e0d\u53ef\u4e2d\u65ad\u7684\uff0c\u8981\u4e48\u540c\u65f6\u6267\u884c\uff0c\u8981\u4e48\u540c\u65f6\u4e0d\u6267\u884c\u3002\u5177\u5907\u539f\u5b50\u6027\u7684\u8fd9\u4e9b\u64cd\u4f5c\u88ab\u79f0\u4e3a\u539f\u5b50\u64cd\u4f5c\u3002\n<ul class=\"wp-block-list\">\n<li>\u5bfc\u81f4\u539f\u5b50\u6027\u95ee\u9898\u7684\u539f\u56e0\u3002CPU\u7684\u65f6\u95f4\u7247\u62a2\u5360\u3002<\/li>\n\n\n\n<li>\u89e3\u51b3\u539f\u5b50\u6027\u95ee\u9898\u7684\u65b9\u6848\u3002\u539f\u5b50\u6027\u64cd\u4f5c\u548c\u9501\u673a\u5236\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u6709\u5e8f\u6027\u3002\u8868\u793a\u7a0b\u5e8f\u7f16\u5199\u7684\u6307\u4ee4\u987a\u5e8f\u548c\u7a0b\u5e8f\u8fd0\u884c\u7684\u6307\u4ee4\u987a\u5e8f\u53ef\u80fd\u51fa\u73b0\u4e0d\u4e00\u81f4\u95ee\u9898\u3002\n<ul class=\"wp-block-list\">\n<li>\u5bfc\u81f4\u6709\u5e8f\u6027\u7684\u95ee\u9898\u7684\u539f\u56e0\u3002\n<ul class=\"wp-block-list\">\n<li>\u7f16\u8bd1\u5668\u6307\u4ee4\u91cd\u6392\u3002<\/li>\n\n\n\n<li>CPU\u6307\u4ee4\u91cd\u6392\u3002<\/li>\n\n\n\n<li>\u5185\u5b58\u7cfb\u7edf\u6307\u4ee4\u91cd\u6392\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u89e3\u51b3\u65b9\u6cd5\u3002volatile\u3001\u9501\u3001final\u57df\u624b\u6bb5\u6765\u9632\u6b62\u5173\u952e\u6307\u4ee4\u91cd\u6392\u3002\u56e0\u4e3ajava\u7f16\u8bd1\u5668\u5728\u751f\u6210\u6307\u4ee4\u5e8f\u5217\u7684\u9002\u5f53\u4f4d\u7f6e\u4f1a\u63d2\u5165\u5185\u5b58\u5c4f\u969c\u6307\u4ee4\u6765\u7981\u6b62\u7279\u5b9a\u7c7b\u578b\u7684\u6307\u4ee4\u91cd\u6392\u5e8f\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u53ef\u89c1\u6027\u3001\u539f\u5b50\u6027\u548c\u6709\u5e8f\u6027\u4ea7\u751f\u7684\u6839\u672c\u539f\u56e0\u5728\u4e8e\u8f6f\u786c\u4ef6\u5de5\u7a0b\u5e08\u4e3a\u4e86\u6709\u6548\u63d0\u9ad8CPU\u6027\u80fd\u5bf9\u5176\u8fdb\u884c\u7684\u4e00\u7cfb\u5217\u4f18\u5316\u5bfc\u81f4\u7684\u3002\u6bd4\u5982\u4e3a\u4e86\u63d0\u9ad8CPU\u7684\u5b58\u53d6\u6548\u7387\u8bbe\u8ba1\u4e86\u4e09\u7ea7\u7f13\u5b58\uff0cStoreBuffer\u3001\u7f13\u5b58\u884c\u7b49\u673a\u5236\uff0c\u4e3a\u4e86\u63d0\u9ad8\u6307\u4ee4\u6027\u80fd\u800c\u8bbe\u8ba1\u7684\u7f16\u8bd1\u5668\u6307\u4ee4\u4f18\u5316\u7b49\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4ec0\u4e48\u662f\u963b\u585e\u961f\u5217\uff1f<\/h2>\n\n\n\n<p>\u963b\u585e\u961f\u5217\u662f\u4e00\u79cd\u7ebf\u7a0b\u5b89\u5168\u7684\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u8fdb\u884c\u6570\u636e\u4ea4\u6362\uff0c\u652f\u6301\u963b\u585e\u5f97\u63d2\u5165\u548c\u79fb\u51fa\u5143\u7d20\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\u65b9\u6cd5\/\u5904\u7406\u65b9\u5f0f<\/td><td>\u629b\u51fa\u5f02\u5e38<\/td><td>\u8fd4\u56de\u7279\u6b8a\u503c<\/td><td>\u4e00\u76f4\u963b\u585e<\/td><td>\u8d85\u65f6\u9000\u51fa<\/td><\/tr><tr><td>\u63d2\u5165\u65b9\u6cd5<\/td><td>add(e)<\/td><td>offer(e)<\/td><td>put(e)<\/td><td>offer(e, time, unit)<\/td><\/tr><tr><td>\u79fb\u51fa\u65b9\u6cd5<\/td><td>remove()<\/td><td>poll()<\/td><td>take()<\/td><td>poll(time, unit)<\/td><\/tr><tr><td>\u68c0\u67e5\u65b9\u6cd5<\/td><td>element()<\/td><td>peek()<\/td><td><\/td><td><\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">\u63d2\u5165\u548c\u79fb\u9664\u64cd\u4f5c\u7684\u56db\u79cd\u5904\u7406\u65b9\u5f0f<\/figcaption><\/figure>\n\n\n\n<p>\u963b\u585e\u961f\u5217\u63a5\u53e3\u7684\u5b9e\u73b0\u7c7b\u6709\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\u7c7b\u540d<\/td><td>\u7279\u70b9<\/td><\/tr><tr><td>ArrayBlockingQueue<\/td><td>\u7531\u6570\u7ec4\u7ed3\u6784\u6784\u6210\u7684\u6709\u754c\u963b\u585e\u961f\u5217<\/td><\/tr><tr><td>LinkedBlockingQueue<\/td><td>\u7531\u94fe\u8868\u7ed3\u6784\u6784\u6210\u7684\u6709\u754c\uff08\u9ed8\u8ba4\u503c\u4e3aInteger.MAX_VALUE\uff09\u963b\u585e\u961f\u5217<\/td><\/tr><tr><td>PriorityBlockingQueue<\/td><td>\u652f\u6301\u4f18\u5148\u7ea7\u6392\u5e8f\u7684\u65e0\u754c\u963b\u585e\u961f\u5217<\/td><\/tr><tr><td>DelayQueue<\/td><td>\u4f7f\u7528\u4f18\u5148\u7ea7\u961f\u5217\u5b9e\u73b0\u7684\u5ef6\u8fdf\u65e0\u754c\u963b\u585e\u961f\u5217<\/td><\/tr><tr><td>SynchronousQueue<\/td><td>\u4e0d\u5b58\u50a8\u5143\u7d20\u7684\u963b\u585e\u961f\u5217\uff0c\u4e5f\u5373\u5355\u4e2a\u5143\u7d20\u7684\u961f\u5217<\/td><\/tr><tr><td>LinkedTransferQueue<\/td><td>\u7531\u94fe\u8868\u6784\u6210\u7684\u65e0\u754c\u963b\u585e\u961f\u5217<\/td><\/tr><tr><td>LinkedBlockingDeque<\/td><td>\u7531\u94fe\u8868\u6784\u6210\u7684\u53cc\u5411\u963b\u585e\u961f\u5217<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">7\u4e2a\u963b\u585e\u961f\u5217\u53ca\u7279\u70b9<\/figcaption><\/figure>\n\n\n\n<p>\u4e3b\u8981\u7528\u4e8e\u751f\u4ea7\u8005\u6d88\u8d39\u8005\u6a21\u5f0f\u4e2d\uff0c\u53ef\u4ee5\u5b9e\u73b0\u4ee5\u4e0b\u7279\u6027\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728\u961f\u5217\u4e3a\u7a7a\u65f6\uff0c\u4ece\u961f\u5217\u4e2d\u83b7\u53d6\u5143\u7d20\u4f1a\u963b\u585e\uff1b\u5f53\u751f\u4ea7\u8005\u5411\u961f\u5217\u4e2d\u6dfb\u52a0\u5143\u7d20\u65f6\uff0c\u963b\u585e\u7684\u6d88\u8d39\u8005\u961f\u5217\u4f1a\u88ab\u5524\u9192\u3002<\/li>\n\n\n\n<li>\u5728\u961f\u5217\u6ee1\u65f6\uff0c\u5411\u961f\u5217\u4e2d\u6dfb\u52a0\u5143\u7d20\u4f1a\u963b\u585e\uff1b\u5f53\u6d88\u8d39\u8005\u4ece\u961f\u5217\u4e2d\u6d88\u8017\u5143\u7d20\u65f6\uff0c\u963b\u585e\u7684\u751f\u4ea7\u8005\u961f\u5217\u4f1a\u88ab\u5524\u9192\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">JAVA\u4e2d\u521b\u5efa\u7ebf\u7a0b\u7684\u65b9\u6cd5<\/h2>\n\n\n\n<p>\u7ee7\u627fThread\u7c7b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class MyThread extends Thread {\n    public void run() {\n        \/\/ TODO\n    }\n    \n    public static void main(String&#91;] args) {\n        MyThread myThread = new MyThread();\n        myThread.start();\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u5b9e\u73b0Runnable\u63a5\u53e3<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class MyRunnable implements Runnable {\n    @Override\n    public void run() {\n        \/\/ TODO\n    }\n\n    public static void main(String&#91;] args) {\n        Thread thread = new Thread(new MyRunnable());\n        thread.start();\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u4f7f\u7528\u533f\u540d\u5185\u90e8\u7c7b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class NoNameThread {\n    public static void main(String&#91;] args) {\n        Thread thread = new Thread(new Runnable() {\n            @Override\n            public void run() {\n                \/\/ TODO\n            }\n        });\n        thread.start();\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u4f7f\u7528Lambda\u8868\u8fbe\u5f0f<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class LambdaThread {\n    public static void main(String&#91;] args) {\n        Thread thread = new Thread(() -&gt; {\n            \/\/ TODO\n        });\n        thread.start();\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u4f7f\u7528\u7ebf\u7a0b\u6c60<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class ExecutorThread {\n    public static void main(String&#91;] args) {\n        ExecutorService executorService = Executors.newFixedThreadPool(5);\n        executorService.submit(() -&gt; {\n            \/\/ TODO\n        });\n        \n    }\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u4ec0\u4e48\u662f\u5b88\u62a4\u7ebf\u7a0b<\/h2>\n\n\n\n<p>java\u7ebf\u7a0b\u5206\u4e3a\u7528\u6237\u7ebf\u7a0b\u548c\u5b88\u62a4\u7ebf\u7a0b\uff0c\u7528\u6237\u7ebf\u7a0b\u5c31\u662f\u666e\u901a\u7684\u7ebf\u7a0b\uff0c\u5b88\u62a4\u7ebf\u7a0b\u662fjvm\u7684\u540e\u53f0\u7ebf\u7a0b\uff0c\u5728\u6240\u6709\u7528\u6237\u7ebf\u7a0b\u7ed3\u675f\u4e4b\u540e\u5b88\u62a4\u7ebf\u7a0b\u4f1a\u81ea\u52a8\u5173\u95ed\u3002\u53ef\u4ee5\u901a\u8fc7thread.setDeamon(true)\u7684\u65b9\u5f0f\u5c06\u4e00\u4e2a\u7ebf\u7a0b\u8bbe\u7f6e\u4e3a\u5b88\u62a4\u7ebf\u7a0b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">CountDownLatch\u7528\u6cd5\u53ca\u5176\u5e95\u5c42\u539f\u7406<\/h2>\n\n\n\n<p>CountDownLatch\u8868\u793a\u8ba1\u6570\u5668\uff0c\u521b\u5efaCountDownLatch\u5bf9\u8c61\u65f6\u53ef\u4ee5\u8bbe\u7f6e\u4e00\u4e2a\u6570\u5b57\uff0c\u5b83\u6709\u4e24\u4e2a\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>await()\u3002\u5f53\u4e00\u4e2a\u7ebf\u7a0b\u8c03\u7528await()\u65f6\u5c06\u4f1a\u963b\u585e\u3002<\/li>\n\n\n\n<li>countDown()\u3002\u5f53\u4e00\u4e2a\u7ebf\u7a0b\u8c03\u7528countDown()\u65b9\u6cd5\u65f6\uff0cCountDownLatch\u8bbe\u7f6e\u7684\u6570\u5b57\u4f1a\u5efa\u51cf1\uff0c\u5f53\u6570\u5b57\u51cf\u4e3a0\u65f6\uff0cawait()\u7684\u7ebf\u7a0b\u4f1a\u88ab\u5524\u9192\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5e95\u5c42\u539f\u7406\uff1a\u8c03\u7528await()\u65b9\u6cd5\u7684\u7ebf\u7a0b\u4f1a\u5229\u7528AQS\u6392\u961f\uff0c\u4e00\u65e6\u6570\u5b57\u88ab\u51cf\u4e3a0\uff0c\u5219\u4f1a\u5c06AQS\u4e2d\u6392\u961f\u7684\u7ebf\u7a0b\u4f9d\u6b21\u5524\u9192\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Semaphore\u7528\u6cd5\u53ca\u5e95\u5c42\u539f\u7406<\/h2>\n\n\n\n<p>Semaphore\u8868\u793a\u4fe1\u53f7\u91cf\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u8bb8\u53ef\u7684\u4e2a\u6570\uff0c\u8868\u793a\u540c\u4e8b\u5141\u8bb8\u6700\u591a\u591a\u5c11\u4e2a\u7ebf\u7a0b\u4f7f\u7528\u8be5\u4fe1\u53f7\u91cf\uff0c\u901a\u8fc7acquire()\u6765\u83b7\u53d6\u8bb8\u53ef\uff0c\u5982\u679c\u6ca1\u6709\u8bb8\u53ef\u53ef\u7528\u5219\u7ebf\u7a0b\u963b\u585e\uff0c\u5e76\u901a\u8fc7AQS\u6392\u961f\uff0c\u53ef\u4ee5\u901a\u8fc7release()\u65b9\u6cd5\u6765\u91ca\u653e\u8bb8\u53ef\uff0c\u5f53\u67d0\u4e2a\u7ebf\u7a0b\u91ca\u653e\u4e86\u67d0\u4e2a\u8bb8\u53ef\u540e\uff0c\u4f1a\u4eceAQS\u4e2d\u6b63\u5728\u6392\u961f\u7684\u7b2c\u4e00\u4e2a\u7ebf\u7a0b\u5f00\u59cb\u4f9d\u6b21\u5524\u9192\uff0c\u77e5\u9053\u6ca1\u6709\u7a7a\u95f2\u8bb8\u53ef\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">ReentrantLock\u4e2d\u7684\u516c\u5e73\u9501\u548c\u975e\u516c\u5e73\u9501\u7684\u5e95\u5c42\u5b9e\u73b0<\/h2>\n\n\n\n<p>\u9996\u5148ReentrantLock\u662f\u57fa\u4e8eAQS\u505a\u4ee3\u7801\u7684\u540c\u6b65\u63a7\u5236\u7684\uff0c\u5728\u521b\u5efaReentrantLock\u9501\u5bf9\u8c61\u65f6\uff0c\u901a\u8fc7\u53ef\u4ee5\u901a\u8fc7\u6784\u9020\u51fd\u6570\u51b3\u5b9a\u662f\u521b\u5efa\u516c\u5e73\u9501\u8fd8\u662f\u975e\u516c\u5e73\u9501\uff0c\u5982\u679c\u662f\u65e0\u53c2\u6784\u9020\u51fd\u6570\u5219\u9ed8\u8ba4\u662f\u975e\u516c\u5e73\u9501\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"429\" src=\"http:\/\/www.spiceandwolf.com.cn\/wp-content\/uploads\/2024\/08\/image-43-1024x429.png\" alt=\"\" class=\"wp-image-1753\" srcset=\"http:\/\/www.spiceandwolf.com.cn\/wp-content\/uploads\/2024\/08\/image-43-1024x429.png 1024w, http:\/\/www.spiceandwolf.com.cn\/wp-content\/uploads\/2024\/08\/image-43-300x126.png 300w, http:\/\/www.spiceandwolf.com.cn\/wp-content\/uploads\/2024\/08\/image-43-768x322.png 768w, http:\/\/www.spiceandwolf.com.cn\/wp-content\/uploads\/2024\/08\/image-43.png 1212w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u5176\u4e2dsync\u53d8\u91cf\u5219\u8868\u793a\u7684\u662f\u540c\u6b65\u5668\uff0c\u5373AQS\u7684\u5b9e\u73b0\u7c7b<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"786\" src=\"http:\/\/www.spiceandwolf.com.cn\/wp-content\/uploads\/2024\/08\/image-48-1024x786.png\" alt=\"\" class=\"wp-image-1760\" srcset=\"http:\/\/www.spiceandwolf.com.cn\/wp-content\/uploads\/2024\/08\/image-48-1024x786.png 1024w, http:\/\/www.spiceandwolf.com.cn\/wp-content\/uploads\/2024\/08\/image-48-300x230.png 300w, http:\/\/www.spiceandwolf.com.cn\/wp-content\/uploads\/2024\/08\/image-48-768x590.png 768w, http:\/\/www.spiceandwolf.com.cn\/wp-content\/uploads\/2024\/08\/image-48.png 1440w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u4f46\u662f\u8fd9\u91cc\u7684Sync\u5176\u5b9e\u5e76\u4e0d\u5b8c\u6574\uff0c\u53ea\u91cd\u5199\u4e86tryRelease\u548cisHeldExclusively\u65b9\u6cd5\uff0c\u8981\u4f5c\u4e3a\u540c\u6b65\u5668\u4f7f\u7528\u5f97\u81f3\u5c11\u73b0\u5b9e\u4e00\u4e2atryAcquire\u65b9\u6cd5\u3002\u4e3a\u5565\u5462\uff1f\u6211\u60f3Doug Lea\u5728\u6709\u4e24\u70b9\u8003\u91cf\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u901a\u8fc7\u62bd\u8c61\u7c7b\u505a\u4e86\u4e00\u5c42\u5171\u7528\u4ee3\u7801\u7684\u63d0\u53d6\u3002\u8fd9\u91ccnonfairTryAcquire\u3001tryRelease\u3001isHeldExclusively\u5305\u62ec\u5e95\u4e0b\u4e00\u4f17\u65b9\u6cd5\u7684\u903b\u8f91\u4e0d\u7ba1\u5728\u516c\u5e73\u9501\u4e2d\u8fd8\u662f\u975e\u516c\u5e73\u9501\u4e2d\u90fd\u662f\u4e00\u6837\u7684\uff0c\u5176\u4e2dnonfaireTryAcquire\u672c\u8eab\u8fd8\u4e3a\u540e\u9762\u7684\u5b9e\u73b0\u7c7b\u63d0\u4f9b\u4e86tryAcquire\u65b9\u6cd5\u7684\u5e95\u5c42\u5b9e\u73b0\uff0c\u6240\u4ee5\u8fd9\u91cc\u5176\u5b9e\u662f\u505a\u4e86\u4e00\u6b21\u516c\u5171\u65b9\u6cd5\u7684\u62bd\u53d6\uff0c\u5c06\u5b9e\u73b0\u7c7b\u4e2d\u53ef\u80fd\u51fa\u73b0\u7684\u516c\u5171\u903b\u8f91\u63d0\u53d6\u5230\u4e86\u62bd\u8c61\u7c7b\u4e2d\u3002<\/li>\n\n\n\n<li>lock\u65b9\u6cd5\u7684\u62bd\u8c61\uff08\u7b56\u7565\u6a21\u5f0f\u601d\u7ef4\uff09\u3002ReenTrantLock\u5e76\u53d1\u7ec4\u4ef6\u6db5\u76d6\u4e86\u516c\u5e73\u9501\u548c\u975e\u516c\u5e73\u9501\uff0c\u5176\u4e2d\u516c\u5e73\u9501\u548c\u975e\u516c\u5e73\u9501\u7684\u9501\u65b9\u6cd5(lock)\u662f\u57fa\u4e8e\u4e24\u7c7b\u540c\u6b65\u5668\u6765\u5b9e\u73b0\uff0c\u5206\u522b\u662fNonfaireSync\u548cFairSync\uff0c\u516c\u5e73\u9501\u548c\u975e\u516c\u5e73\u9501\u7684\u4e3b\u8981\u903b\u8f91\u533a\u522b\u5c31\u5728lock\u65b9\u6cd5\u548ctryAcquire\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">\u975e\u516c\u5e73\u9501\u7684\u5b9e\u73b0<\/h5>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"534\" src=\"http:\/\/www.spiceandwolf.com.cn\/wp-content\/uploads\/2024\/08\/image-49-1024x534.png\" alt=\"\" class=\"wp-image-1763\" srcset=\"http:\/\/www.spiceandwolf.com.cn\/wp-content\/uploads\/2024\/08\/image-49-1024x534.png 1024w, http:\/\/www.spiceandwolf.com.cn\/wp-content\/uploads\/2024\/08\/image-49-300x156.png 300w, http:\/\/www.spiceandwolf.com.cn\/wp-content\/uploads\/2024\/08\/image-49-768x400.png 768w, http:\/\/www.spiceandwolf.com.cn\/wp-content\/uploads\/2024\/08\/image-49.png 1362w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u9996\u5148\u6211\u4eec\u53d1\u73b0\uff0cReenTrantLock\u5728Sync\u5b9e\u73b0\u7c7b\u8fd9\u4e00\u5c42\u624d\u91cd\u5199\u4e86tryAcquire\u65b9\u6cd5\uff0c\u6240\u4ee5\u6211\u4eec\u8981\u77e5\u9053Sync\u5b9e\u73b0\u7c7b\u8fd9\u4e00\u5c42\u624d\u662f\u771f\u6b63\u53ef\u7528\u4e8e\u4ee3\u7801\u5e76\u53d1\u63a7\u5236\u7684\u540c\u6b65\u5668\u3002\u5728\u770b\u5230lock\u65b9\u6cd5\u7684\u5177\u4f53\u5b9e\u73b0\uff0c\u8fd9\u91cc\u76f4\u63a5\u8fdb\u884c\u4e86\u4e00\u6b21state\u503c\u7684CAS\u64cd\u4f5c\uff0c\u6211\u4eec\u5148\u8bb0\u4f4f\u8fd9\u6b21\u83b7\u53d6\u9501\u7684\u5c1d\u8bd5\u5e76\u7ee7\u7eed\u5f80\u4e0b\u770b\uff0c\u5f53\u8fd9\u6b21\u5c1d\u8bd5\u5931\u8d25\u65f6\u4f1a\u6267\u884cacquire(1)<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"324\" src=\"http:\/\/www.spiceandwolf.com.cn\/wp-content\/uploads\/2024\/08\/image-50-1024x324.png\" alt=\"\" class=\"wp-image-1764\" 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