{"id":8331,"date":"2023-11-28T20:24:46","date_gmt":"2023-11-28T12:24:46","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=8331"},"modified":"2023-11-28T20:26:09","modified_gmt":"2023-11-28T12:26:09","slug":"java-zhongwait-fang-fasleep-fang-fayield-fang-f","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/java-zhongwait-fang-fasleep-fang-fayield-fang-f\/","title":{"rendered":"Java\u4e2dwait()\u65b9\u6cd5\u3001sleep()\u65b9\u6cd5\u3001yield()\u65b9\u6cd5\u7684\u533a\u522b\uff1f"},"content":{"rendered":"

Java\u4e2dwait\u3001sleep\u7684\u533a\u522b\u6216\u8005Java\u4e2dsleep\u3001yield\u7684\u533a\u522b\u662fJava\u9762\u8bd5\u6216\u8005\u591a\u7ebf\u7a0b\u9762\u8bd5\u4e2d\u6700\u5e38\u95ee\u7684\u95ee\u9898\u4e4b\u4e00\u3002\u5728\u8fd93\u4e2a\u5728Java\u4e2d\u80fd\u591f\u7528\u6765\u6682\u505c\u7ebf\u7a0b\u7684\u65b9\u6cd5\u4e2d\uff0csleep()\u548cyield()\u65b9\u6cd5\u662f\u5b9a\u4e49\u5728 Thread\u7c7b\u4e2d\uff0c\u800cwait()\u65b9\u6cd5\u662f\u5b9a\u4e49\u5728Object\u7c7b\u4e2d\u7684\uff0c\u8fd9\u4e5f\u662f\u9762\u8bd5\u4e2d\u5e38\u95ee\u7684\u4e00\u4e2a\u95ee\u9898\u3002
\nwait()\u548csleep()\u7684\u5173\u952e\u7684\u533a\u522b\u5728\u4e8e, wait()\u662f\u7528\u4e8e\u7ebf\u7a0b\u95f4\u901a\u4fe1\u7684,\u800csleep()\u662f\u7528\u4e8e\u77ed\u65f6\u95f4\u6682\u505c\u5f53\u524d\u7ebf\u7a0b\u3002\u66f4\u52a0\u660e\u663e\u7684\u4e00\u4e2a\u533a\u522b\u5728\u4e8e,\u5f53\u4e00\u4e2a\u7ebf\u7a0b\u8c03\u7528wait()\u65b9\u6cd5\u7684\u65f6\u5019\uff0c\u4f1a\u91ca\u653e\u5b83\u6240\u6301\u6709\u7684\u5bf9\u8c61\u7684\u7ba1\u7a0b\u548c\u9501\uff0c\u4f46\u662f\u8c03\u7528sleep()\u65b9\u6cd5\u7684\u65f6\u5019,\u4e0d\u4f1a\u91ca\u653e\u4ed6\u6240\u6301\u6709\u7684\u7ba1\u7a0b\u3002
\n\u56de\u5230yield()\u65b9\u6cd5\u4e0a\u6765\uff0c\u4e0ewait()\u548csleep()\u65b9\u6cd5\u6709\u4e00\u4e9b\u533a\u522b\uff0c\u5b83\u4ec5\u4ec5\u91ca\u653e\u7ebf\u7a0b\u6240\u5360\u6709\u7684CPU\u8d44\u6e90\uff0c\u4ece\u800c\u8ba9\u5176\u4ed6\u7ebf\u7a0b\u6709\u673a\u4f1a\u8fd0\u884c\uff0c\u4f46\u662f\u5e76\u4e0d\u80fd\u4fdd\u8bc1\u67d0\u4e2a\u7279\u5b9a\u7684\u7ebf\u7a0b\u80fd\u591f\u83b7\u5f97CPU\u8d44\u6e90\u3002\u8c01\u80fd\u83b7\u5f97CPU\u5b8c\u5168\u53d6\u51b3\u4e8e\u8c03\u5ea6\u5668\uff0c\u5728\u6709\u4e9b\u60c5\u51b5\u4e0b\u8c03\u7528yield\u65b9\u6cd5\u7684\u7ebf\u7a0b\u751a\u81f3\u4f1a\u518d\u6b21\u5f97\u5230CPU\u8d44\u6e90\u3002\u6240\u4ee5\uff0c\u4f9d\u8d56\u4e8eyield\u65b9\u6cd5\u662f\u4e0d\u53ef\u9760\u7684,\u5b83\u53ea\u80fd\u5c3d\u529b\u800c\u4e3a\u3002
\nJava\u4e2dwait\u548csleep\u7684\u533a\u522b
\nwait\u548csleep\u7684\u4e3b\u8981\u533a\u522b\u662f\u8c03\u7528wait\u65b9\u6cd5\u65f6\uff0c\u7ebf\u7a0b\u5728\u7b49\u5f85\u7684\u65f6\u5019\u4f1a\u91ca\u653e\u6389\u5b83\u6240\u83b7\u5f97\u7684monitor\uff0c\u4f46\u662f\u8c03\u7528Thread.sleep()\u65b9\u6cd5\u65f6\uff0c\u7ebf\u7a0b\u5728\u7b49\u5f85\u7684\u65f6\u5019\u4ecd\u7136\u4f1a\u6301\u6709monitor\u6216\u8005\u9501\u3002\u53e6\u5916\uff0cJava\u4e2d\u7684wait\u65b9\u6cd5\u5e94\u5728\u540c\u6b65\u4ee3\u7801\u5757\u4e2d\u8c03\u7528,\u4f46\u662fsleep\u65b9\u6cd5\u4e0d\u9700\u8981\u3002
\n\u53e6\u4e00\u4e2a\u533a\u522b\u662fThread.sleep()\u65b9\u6cd5\u662f\u4e00\u4e2a\u9759\u6001\u65b9\u6cd5\uff0c\u4f5c\u7528\u5728\u5f53\u524d\u7ebf\u7a0b\u4e0a;\u4f46\u662fwait\u65b9\u6cd5\u662f\u4e00\u4e2a\u5b9e\u4f8b\u65b9\u6cd5,\u5e76\u4e14\u53ea\u80fd\u5728\u5176\u4ed6\u7ebf\u7a0b\u8c03\u7528\u672c\u5b9e\u4f8b\u7684notify()\u65b9\u6cd5\u65f6\u88ab\u5524\u9192\u3002\u53e6\u5916\uff0c\u4f7f\u7528sleep\u65b9\u6cd5\u65f6,\u88ab\u6682\u505c\u7684\u7ebf\u7a0b\u5728\u88ab\u5524\u9192\u4e4b\u540e\u4f1a\u7acb\u5373\u8fdb\u5165\u5c31\u7eea\u6001(Runnable state),\u4f46\u662f\u4f7f\u7528wait\u65b9\u6cd5\u7684\u65f6\u5019,\u88ab\u6682\u505c\u7684\u7ebf\u7a0b\u4f1a\u9996\u5148\u83b7\u5f97\u9501(\u8bd1\u8005\u6ce8:\u963b\u585e\u6001\uff09,\u7136\u540e\u518d\u8fdb\u5165\u5c31\u7eea\u6001\u3002\u6240\u4ee5,\u6839\u636e\u4f60\u7684\u9700\u6c42,\u5982\u679c\u4f60\u9700\u8981\u6682\u5b9a\u4f60\u7684\u7ebf\u7a0b\u4e00\u6bb5\u7279\u5b9a\u7684\u65f6\u95f4\u5c31\u4f7f\u7528sleep()\u65b9\u6cd5,\u5982\u679c\u4f60\u60f3\u8981\u5b9e\u73b0\u7ebf\u7a0b\u95f4\u901a\u4fe1\u5c31\u4f7f\u7528wait()\u65b9\u6cd5\u3002
\n\u603b\u7ed3:
\n1\u3001wait\u53ea\u80fd\u5728\u540c\u6b65\uff08synchronize\uff09\u73af\u5883\u4e2d\u88ab\u8c03\u7528,\u800csleep\u4e0d\u9700\u8981\u3002
\n2\u3001\u8fdb\u5165wait\u72b6\u6001\u7684\u7ebf\u7a0b\u80fd\u591f\u88abnotify\u548cnotifyAll\u7ebf\u7a0b\u5524\u9192,\u4f46\u662f\u8fdb\u5165sleeping\u72b6\u6001\u7684\u7ebf\u7a0b\u4e0d\u80fd\u88abnotify\u65b9\u6cd5\u5524\u9192\u3002
\n3\u3001wait\u901a\u5e38\u6709\u6761\u4ef6\u5730\u6267\u884c,\u7ebf\u7a0b\u4f1a\u4e00\u76f4\u5904\u4e8ewait\u72b6\u6001,\u76f4\u5230\u67d0\u4e2a\u6761\u4ef6\u53d8\u4e3a\u771f\u3002\u4f46\u662fsleep\u4ec5\u4ec5\u8ba9\u4f60\u7684\u7ebf\u7a0b\u8fdb\u5165\u7761\u7720\u72b6\u6001\u3002
\n4\u3001wait\u65b9\u6cd5\u5728\u8fdb\u5165wait\u72b6\u6001\u7684\u65f6\u5019\u4f1a\u91ca\u653e\u5bf9\u8c61\u7684\u9501\uff0c\u4f46\u662fsleep\u65b9\u6cd5\u4e0d\u4f1a\u3002
\n5\u3001wait\u65b9\u6cd5\u662f\u9488\u5bf9\u4e00\u4e2a\u88ab\u540c\u6b65\u4ee3\u7801\u5757\u52a0\u9501\u7684\u5bf9\u8c61,\u800csleep\u662f\u9488\u5bf9\u4e00\u4e2a\u7ebf\u7a0b\u3002
\nyield\u548csleep\u7684\u533a\u522b
\nyield\u548csleep\u7684\u4e3b\u8981\u662f\uff0cyield\u65b9\u6cd5\u4f1a\u4e34\u65f6\u6682\u505c\u5f53\u524d\u6b63\u5728\u6267\u884c\u7684\u7ebf\u7a0b\uff0c\u6765\u8ba9\u6709\u540c\u6837\u4f18\u5148\u7ea7\u7684\u6b63\u5728\u7b49\u5f85\u7684\u7ebf\u7a0b\u6709\u673a\u4f1a\u6267\u884c\u3002\u5982\u679c\u6ca1\u6709\u6b63\u5728\u7b49\u5f85\u7684\u7ebf\u7a0b\uff0c\u6216\u8005\u6240\u6709\u6b63\u5728\u7b49\u5f85\u7684\u7ebf\u7a0b\u7684\u4f18\u5148\u7ea7\u90fd\u6bd4\u8f83\u4f4e,\u90a3\u4e48\u8be5\u7ebf\u7a0b\u4f1a\u7ee7\u7eed\u8fd0\u884c\u3002\u6267\u884c\u4e86yield\u65b9\u6cd5\u7684\u7ebf\u7a0b\u4ec0\u4e48\u65f6\u5019\u4f1a\u7ee7\u7eed\u8fd0\u884c\u7531\u7ebf\u7a0b\u8c03\u5ea6\u5668\u6765\u51b3\u5b9a\uff0c\u4e0d\u540c\u7684\u5382\u5546\u53ef\u80fd\u6709\u4e0d\u540c\u7684\u884c\u4e3a\u3002yield\u65b9\u6cd5\u4e0d\u4fdd\u8bc1\u5f53\u524d\u7684\u7ebf\u7a0b\u4f1a\u6682\u505c\u6216\u8005\u505c\u6b62\uff0c\u4f46\u662f\u53ef\u4ee5\u4fdd\u8ba9\u5f53\u524d\u7ebf\u7a0b\u5728\u8c03\u7528yield\u65b9\u6cd5\u65f6\u4f1a\u653e\u5f03 CPU\u3002
\n\u5728Java\u4e2dSleep\u65b9\u6cd5\u6709\u4e24\u4e2a,\u4e00\u4e2a\u53ea\u6709\u4e00\u4e2a\u6beb\u79d2\u53c2\u6570\uff0c\u53e6\u4e00\u4e2a\u6709\u6beb\u79d2\u548c\u7eb3\u79d2\u4e24\u4e2a\u53c2\u6570\u3002
\nsleep(long millis)
\nor
\nsleep(long millis,int nanos)
\n\u4f1a\u8ba9\u5f53\u524d\u6267\u884c\u7684\u7ebf\u7a0bsleep\u6307\u5b9a\u7684\u65f6\u95f4\u3002
\n\u4e0b\u9762\u8fd9\u5f20\u56fe\u5f88\u597d\u5730\u5c55\u793a\u4e86\u5728\u8c03\u7528wait\u3001sleep\u3001yield\u65b9\u6cd5\u7684\u65f6\u5019\uff0c\u7ebf\u7a0b\u72b6\u6001\u5982\u4f55\u8f6c\u6362
\n\"\"<\/p>\n

Java\u4e2dsleep\u65b9\u6cd5\u7684\u51e0\u4e2a\u6ce8\u610f\u70b9:
\n1\u3001Thread.sleep()\u65b9\u6cd5\u7528\u6765\u6682\u505c\u7ebf\u7a0b\u7684\u6267\u884c\uff0c\u5c06CPU\u653e\u7ed9\u7ebf\u7a0b\u8c03\u5ea6\u5668\u3002
\n2\u3001Thread.sleep()\u65b9\u6cd5\u662f\u4e00\u4e2a\u9759\u6001\u65b9\u6cd5\uff0c\u5b83\u6682\u505c\u7684\u662f\u5f53\u524d\u6267\u884c\u7684\u7ebf\u7a0b\u3002
\n3\u3001Java\u6709\u4e24\u79cdsleep\u65b9\u6cd5\uff0c\u4e00\u4e2a\u53ea\u6709\u4e00\u4e2a\u6beb\u79d2\u53c2\u6570\uff0c\u53e6\u4e00\u4e2a\u6709\u6beb\u79d2\u548c\u7eb3\u79d2\u4e24\u4e2a\u53c2\u6570\u3002
\n4\u3001\u4e0ewait\u65b9\u6cd5\u4e0d\u540c,sleep\u65b9\u6cd5\u4e0d\u4f1a\u91ca\u653e\u9501
\n5\u3001\u5982\u679c\u5176\u4ed6\u7684\u7ebf\u7a0b\u4e2d\u65ad\u4e86\u4e00\u4e2a\u4f11\u7720\u7684\u7ebf\u7a0b\uff0csleep\u65b9\u6cd5\u4f1a\u629b\u51faInterruptedException\u3002
\n6\u3001\u4f11\u7720\u7684\u7ebf\u7a0b\u5728\u5524\u9192\u4e4b\u540e\u4e0d\u4fdd\u8bc1\u80fd\u83b7\u53d6\u5230CPU\uff0c\u5b83\u4f1a\u5148\u8fdb\u5165\u5c31\u7eea\u6001\uff0c\u4e0e\u5176\u4ed6\u7ebf\u7a0b\u7ade\u4e89CPU.
\n7\u3001\u6709\u4e00\u4e2a\u6613\u9519\u7684\u5730\u65b9\uff0c\u5f53\u8c03\u7528t.sleep()\u7684\u65f6\u5019\uff0c\u4f1a\u6682\u505c\u7ebf\u7a0bt\u3002\u8fd9\u662f\u4e0d\u5bf9\u7684\uff0c\u56e0\u4e3aThread.sleep\u662f\u4e00\u4e2a\u9759\u6001\u65b9\u6cd5\uff0c\u5b83\u4f1a\u4f7f\u5f53\u524d\u7ebf\u7a0b\u800c\u4e0d\u662f\u7ebf\u7a0bt\u8fdb\u5165\u4f11\u7720\u72b6\u6001\u3002
\n\u2043\t\u8fd9\u5c31\u662fjava\u4e2d\u7684sleep\u65b9\u6cd5\uff0c\u6211\u4eec\u5df2\u7ecf\u770b\u5230\u4e86java\u4e2dsleep\u3001wait\u4ee5\u53cayield\u65b9\u6cd5\u7684\u533a\u522b\u3002\u603b\u4e4b\uff0c\u8bb0\u4f4fsleep\u548cyield\u4f5c\u7528\u4e8e\u5f53\u524d\u7ebf\u7a0b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

Java\u4e2dwait\u3001sleep\u7684\u533a\u522b\u6216\u8005Java\u4e2dsleep\u3001yield\u7684\u533a\u522b\u662fJava\u9762\u8bd5\u6216\u8005\u591a\u7ebf\u7a0b\u9762\u8bd5\u4e2d\u6700 […]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[99],"tags":[],"class_list":["post-8331","post","type-post","status-publish","format-standard","hentry","category-javabase"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/8331","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=8331"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/8331\/revisions"}],"predecessor-version":[{"id":8359,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/8331\/revisions\/8359"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=8331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=8331"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=8331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}