{"id":3294,"date":"2018-10-31T18:42:22","date_gmt":"2018-10-31T10:42:22","guid":{"rendered":"http:\/\/www.xttblog.com\/?p=3294"},"modified":"2018-10-31T18:42:22","modified_gmt":"2018-10-31T10:42:22","slug":"java-%e4%b8%ad%e7%9a%84%e9%94%81%e6%b1%a0monitor%e5%92%8c%e7%ad%89%e5%be%85%e6%b1%a0waitset","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=3294","title":{"rendered":"java \u4e2d\u7684\u9501\u6c60(monitor)\u548c\u7b49\u5f85\u6c60(waitset)"},"content":{"rendered":"

\n\t\u7a0b\u5e8f\u5c31\u662f\u6a21\u4eff\u4e16\u754c\uff01\u6bd4\u5982\u961f\u5217\u5c31\u662f\u6a21\u4eff\u4eba\u4eec\u7684\u6392\u961f\u573a\u666f\uff0c\u518d\u6bd4\u5982\u5de5\u5382\u6a21\u5f0f\uff0c\u4ee3\u7406\u6a21\u5f0f\u7b49\u90fd\u662f\u548c\u73b0\u5b9e\u751f\u6d3b\u606f\u606f\u76f8\u5173\u7684\u573a\u666f\u884d\u751f\u800c\u6765\u3002\u5728\u524d\u9762\u8fd8\u8bb0\u5f97\u6211\u4eec\u7684 synchronized \u9501\u5417\uff1f\u8fd8\u8bb0\u5f97 Object \u7684 wait \u65b9\u6cd5\u5417\uff1f\u5b83\u4eec\u5206\u522b\u6709\u5404\u81ea\u7684\u6c60\uff0c\u53ca\uff1a\u9501\u6c60\u548c\u7b49\u5f85\u6c60\u3002\u672c\u6587\u7ed3\u5408\u524d\u9762\u7684\u5185\u5bb9\u6765\u8bf4\u8bf4 java \u4e2d\u7684\u9501\u6c60\u548c\u7b49\u5f85\u6c60\u3002\n<\/p>\n

\n\t\"java\n<\/p>\n

\n\twait()\u65b9\u6cd5
\n<\/h2>\n

\n\twait() \u4f7f\u5f53\u524d\u7ebf\u7a0b\u5904\u4e8e\u7b49\u5f85\u72b6\u6001\uff0c\u76f4\u5230\u53e6\u5916\u7684\u7ebf\u7a0b\u8c03\u7528 notify \u6216 notifyAll \u5c06\u5b83\u5524\u9192\u3002\u4f46\u662f\u5728\u7b49\u5f85\u5524\u9192\u7684\u671f\u95f4\uff0c\u5b83\u5904\u5728\u7b49\u5f85\u5524\u9192\u7684\u6c60\u5b50\u4e2d\uff0c\u4e5f\u5c31\u662f\u6211\u4eec\u6240\u8bf4\u7684\u7b49\u5f85\u6c60\u4e2d\u3002\u5f53\u8c03\u7528 wait() \u65b9\u6cd5\u540e\uff0c\u4f1a\u91ca\u653e\u9501\uff0c\u8fdb\u5165\u7b49\u5f85\u6c60\u3002\u5f53\u8c03\u7528 notify() \u6216 notifyAll() \u540e\u5524\u9192\u8be5\u5bf9\u8c61\u76d1\u542c\u7684\u5176\u4e2d\u4e00\u4e2a\u6216\u6240\u6709\u7ebf\u7a0b\uff08\u89c4\u5219\u53d6\u51b3\u4e8eJVM\u5382\u5546\uff0cFILO,FIFO,\u968f\u673a…\uff09\u3002\n<\/p>\n

\n\t\u7b49\u5f85\u6c60
\n<\/h2>\n

\n\t\u5047\u8bbe\u7ebf\u7a0b xttblog \u8c03\u7528\u4e86\u67d0\u4e2a\u5bf9\u8c61\u7684 wait() \u65b9\u6cd5\uff0c\u5219 xttblog \u7ebf\u7a0b\u5c31\u4f1a\u91ca\u653e\u8be5\u5bf9\u8c61\u7684\u9501(\u56e0\u4e3a wait() \u65b9\u6cd5\u5fc5\u987b\u51fa\u73b0\u5728 synchronized \u4e2d\uff0c\u6240\u4ee5\u5728\u6267\u884c wait() \u65b9\u6cd5\u4e4b\u524d xttblog \u7ebf\u7a0b\u5c31\u5df2\u7ecf\u62e5\u6709\u4e86\u8be5\u5bf9\u8c61\u7684\u9501)\uff0c\u540c\u65f6\u7ebf\u7a0b xttblog \u8fdb\u5165\u5230\u4e86\u8be5\u5bf9\u8c61\u7684\u7b49\u5f85\u6c60\u4e2d\u3002\u5982\u679c\u6709\u5176\u5b83\u7ebf\u7a0b\u8c03\u7528\u4e86\u76f8\u540c\u5bf9\u8c61\u7684 notifyAll() \u65b9\u6cd5\uff0c\u90a3\u4e48\u5904\u4e8e\u8be5\u5bf9\u8c61\u7684\u7b49\u5f85\u6c60\u4e2d\u7684\u7ebf\u7a0b\u5c31\u4f1a\u5168\u90e8\u8fdb\u5165\u8be5\u5bf9\u8c61\u7684\u9501\u6c60\u4e2d\uff0c\u4ece\u65b0\u4e89\u593a\u9501\u7684\u62e5\u6709\u6743\u3002\u5982\u679c\u53e6\u5916\u7684\u4e00\u4e2a\u7ebf\u7a0b\u8c03\u7528\u4e86\u76f8\u540c\u5bf9\u8c61\u7684 notify() \u65b9\u6cd5\uff0c\u90a3\u4e48\u4ec5\u4ec5\u6709\u4e00\u4e2a\u5904\u4e8e\u8be5\u5bf9\u8c61\u7684\u7b49\u5f85\u6c60\u4e2d\u7684\u7ebf\u7a0b(\u968f\u673a)\u4f1a\u8fdb\u5165\u8be5\u5bf9\u8c61\u7684\u9501\u6c60\u3002\n<\/p>\n

\n\twait() \u5bf9\u5e94\u7b49\u5f85\u6c60\uff0csynchronized \u5bf9\u5e94\u9501\u6c60\u3002\n<\/p>\n

\n\t\u52a0\u4e86 synchronized \u5173\u952e\u5b57\u7684\u5730\u65b9\u5c31\u4f1a\u6709\u76f8\u5e94\u7684\u83b7\u53d6\u9501\u7684\u6b65\u9aa4\u3002\u672a\u7ade\u4e89\u5230\u9501\u7684\u7ebf\u7a0b\u4f1a\u52a0\u5165\u5230\u9501\u6c60\u3002\n<\/p>\n

\n\t\u9501\u6c60
\n<\/h2>\n

\n\t\u5047\u8bbe\u7ebf\u7a0b xttblog \u5df2\u7ecf\u62e5\u6709\u4e86\u67d0\u4e2a\u5bf9\u8c61(\u6ce8\u610f:\u4e0d\u662f\u7c7b)\u7684\u9501\uff0c\u800c\u5176\u5b83\u7684\u7ebf\u7a0b\u60f3\u8981\u8c03\u7528\u8be5\u5bf9\u8c61\u7684 synchronized \u65b9\u6cd5(\u6216\u8005 synchronized \u5757)\uff0c\u5176\u4ed6\u672a\u83b7\u5f97\u9501\u7684\u7ebf\u7a0b\u5728\u8fdb\u5165\u5bf9\u8c61\u7684 synchronized \u65b9\u6cd5\u4e4b\u524d\u90fd\u9700\u8981\u5148\u83b7\u5f97\u8be5\u5bf9\u8c61\u7684\u9501\u7684\u62e5\u6709\u6743\uff0c\u4f46\u662f\u8be5\u5bf9\u8c61\u7684\u9501\u76ee\u524d\u6b63\u88ab xttblog \u7ebf\u7a0b\u62e5\u6709\uff0c\u6240\u4ee5\u8fd9\u4e9b\u7ebf\u7a0b\u5c31\u8fdb\u5165\u4e86\u8be5\u5bf9\u8c61\u7684\u9501\u6c60\u4e2d\u3002\n<\/p>\n

\n\t\u7b49\u5f85\u6c60\u548c\u9501\u6c60\u4e2d\u7684\u8d44\u6e90\u53ea\u8981\u91cd\u65b0\u83b7\u5f97\u4e86\u5bf9\u8c61\u7684\u62e5\u6709\u6743\uff0c\u90a3\u4e48\u5c31\u4f1a\u88ab\u5bf9\u5e94\u7684\u6c60\u5254\u9664\u3002\n<\/p>\n

\n\t\u4e0a\u9762\u8fd9\u4e24\u4e2a\u5185\u5bb9\u4e5f\u662f\u5f88\u591a\u9ad8\u7ea7\u5f00\u53d1\u4eba\u5458\u7684\u77e5\u8bc6\u6f0f\u6d1e\uff0c\u7ebf\u7a0b\u65b9\u9762\u95ee\u7684\u6df1\u4e86\uff0c\u95ee\u7684\u7ec6\u4e86\u7167\u6837\u6f0f\u6d1e\u767e\u51fa\uff01<\/p>\n

\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/<\/p>

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\u672c\u6587\u539f\u6587\u51fa\u5904\uff1a\u4e1a\u4f59\u8349<\/a>\uff1a » java \u4e2d\u7684\u9501\u6c60(monitor)\u548c\u7b49\u5f85\u6c60(waitset)<\/a><\/p>","protected":false},"excerpt":{"rendered":"

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