{"id":9774,"date":"2023-11-28T21:10:45","date_gmt":"2023-11-28T13:10:45","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=9774"},"modified":"2023-11-28T21:10:48","modified_gmt":"2023-11-28T13:10:48","slug":"java-zhong-wait-notify-notifyall-dou-shi-shen-me","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/java-zhong-wait-notify-notifyall-dou-shi-shen-me\/","title":{"rendered":"Java \u4e2d wait, notify, notifyAll \u90fd\u662f\u4ec0\u4e48?"},"content":{"rendered":"<pre><code class=\"language-plain_text\">wait() \u3001notify\/notifyAll()\u65b9\u6cd5\u662f Object \u7684\u672c\u5730 final \u65b9\u6cd5\uff0c\u65e0\u6cd5\u88ab\u91cd\u5199\u3002\nwait()\u4f7f\u5f53\u524d\u7ebf\u7a0b\u963b\u585e\uff0c\u524d\u63d0\u662f\u5fc5\u987b\u5148\u83b7\u5f97\u9501\uff0c\u4e00\u822c\u914d\u5408synchronized\u5173\u952e\u5b57\u4f7f\u7528\uff0c\u5373\uff0c \u4e00\u822c\u5728 synchronized \u540c\u6b65\u4ee3\u7801\u5757\u91cc\u4f7f\u7528 wait() \u3001 notify\/notifyAll()\u65b9\u6cd5\u3002\n<\/code><\/pre>\n<p>3\u3001\t\u7531\u4e8ewait() \u3001 notify\/notifyAll()\u5728synchronized\u4ee3\u7801\u5757\u6267\u884c\uff0c\u8bf4\u660e\u5f53\u524d\u7ebf\u7a0b\u4e00\u5b9a\u662f \u83b7\u53d6\u4e86\u9501\u7684\u3002<br \/>\n\u5f53\u7ebf\u7a0b\u6267\u884cwait()\u65b9\u6cd5\u65f6\u5019\uff0c\u4f1a\u91ca\u653e\u5f53\u524d\u7684\u9501\uff0c\u7136\u540e\u8ba9\u51faCPU,\u8fdb\u5165\u7b49\u5f85\u72b6\u6001\u3002<br \/>\n\u53ea\u6709\u5f53notify\/notifyAll()\u88ab\u6267\u884c\u65f6\u5019\uff0c\u624d\u4f1a\u5524\u9192\u4e00\u4e2a\u6216\u591a\u4e2a\u6b63\u5904\u4e8e\u7b49\u5f85\u72b6\u6001\u7684\u7ebf\u7a0b,<br \/>\n\u7136\u540e\u7ee7\u7eed\u5f80\u4e0b\u6267\u884c\uff0c\u76f4\u5230\u6267\u884c\u5b8csynchronized\u4ee3\u7801\u5757\u7684\u4ee3\u7801\u6216\u662f\u4e2d\u9014\u9047\u5230wait(),\u518d\u6b21\u91ca \u653e\u9501\u3002<br \/>\n3.3\u3001\u4e5f\u5c31\u662f\u8bf4\uff0cnotify\/notifyAll()\u7684\u6267\u884c\u53ea\u662f\u5524\u9192\u6c89\u7761\u7684\u7ebf\u7a0b\uff0c\u800c\u4e0d\u4f1a\u7acb\u5373\u91ca\u653e\u9501\uff0c\u9501\u7684 \u91ca\u653e\u8981\u770b\u4ee3\u7801\u5757\u7684\u5177\u4f53\u6267\u884c\u60c5\u51b5\u3002\u6240\u4ee5\u5728\u7f16\u7a0b\u4e2d\uff0c\u5c3d\u91cf\u5728\u4f7f\u7528\u4e86 notify\/notifyAll()\u540e\u7acb\u5373 \u9000\u51fa\u4e34\u754c\u533a\uff0c\u4ee5\u5524\u9192\u5176\u4ed6\u7ebf\u7a0b\u8ba9\u5176\u83b7\u5f97\u9501<br \/>\n4\u3001\twait()\u9700\u8981\u88abtry catch\u5305\u56f4\uff0c\u4ee5\u4fbf\u53d1\u751f\u5f02\u5e38\u4e2d\u65ad\u4e5f\u53ef\u4ee5\u4f7fwait\u7b49\u5f85\u7684\u7ebf\u7a0b\u5524\u9192\u3002<br \/>\n5\u3001\tnotify\u548cwait\u7684\u987a\u5e8f\u4e0d\u80fd\u9519\uff0c\u5982\u679cA\u7ebf\u7a0b\u5148\u6267\u884cnotify\u65b9\u6cd5\uff0cB\u7ebf\u7a0b\u5728\u6267\u884cwait\u65b9\u6cd5, \u90a3\u4e48B\u7ebf\u7a0b\u662f\u65e0\u6cd5\u88ab\u5524\u9192\u7684\u3002<br \/>\n6\u3001\tnotify\u548cnotifyAll\u7684\u533a\u522b\uff1anotify\u65b9\u6cd5\u53ea\u5524\u9192\u4e00\u4e2a\u7b49\u5f85\uff08\u5bf9\u8c61\u7684\uff09\u7ebf\u7a0b\u5e76\u4f7f\u8be5\u7ebf\u7a0b\u5f00 \u59cb\u6267\u884c\u3002\u6240\u4ee5\u5982\u679c\u6709\u591a\u4e2a\u7ebf\u7a0b\u7b49\u5f85\u4e00\u4e2a\u5bf9\u8c61\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u53ea\u4f1a\u5524\u9192\u5176\u4e2d\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u9009\u62e9\u54ea\u4e2a\u7ebf\u7a0b \u53d6\u51b3\u4e8e\u64cd\u4f5c\u7cfb\u7edf\u5bf9\u591a\u7ebf\u7a0b\u7ba1\u7406\u7684\u5b9e\u73b0\u3002 notifyAll\u4f1a\u5524\u9192\u6240\u6709\u7b49\u5f85\uff08\u5bf9\u8c61\u7684\uff09\u7ebf\u7a0b\uff0c\u5c3d\u7ba1\u54ea\u4e00\u4e2a \u7ebf\u7a0b\u5c06\u4f1a\u7b2c\u4e00\u4e2a\u5904\u7406\u53d6\u51b3\u4e8e\u64cd\u4f5c\u7cfb\u7edf\u7684\u5b9e\u73b0\u3002\u5982\u679c\u5f53\u524d\u60c5\u51b5\u4e0b\u6709\u591a\u4e2a\u7ebf\u7a0b\u9700\u8981\u88ab\u5524\u9192\uff0c\u63a8\u8350\u4f7f \u7528notifyAll\u65b9\u6cd5\u3002\u6bd4\u5982\u5728\u751f\u4ea7\u8005-\u6d88\u8d39\u8005\u91cc\u9762\u7684\u4f7f\u7528\uff0c\u6bcf\u6b21\u90fd\u9700\u8981\u5524\u9192\u6240\u6709\u7684\u6d88\u8d39\u8005\u6216\u662f\u751f \u4ea7\u8005\uff0c\u4ee5\u5224\u65ad\u7a0b\u5e8f\u662f\u5426\u53ef\u4ee5\u7ee7\u7eed\u5f80\u4e0b\u6267\u884c\u3002<br \/>\n7\u3001\t\u5728\u591a\u7ebf\u7a0b\u4e2d\u8981\u6d4b\u8bd5\u67d0\u4e2a\u6761\u4ef6\u7684\u53d8\u5316\uff0c\u4f7f\u7528if\u8fd8\u662fwhile?<br \/>\n\u8981\u6ce8\u610f\uff0cnotify\u5524\u9192\u6c89\u7761\u7684\u7ebf\u7a0b\u540e\uff0c\u7ebf\u7a0b\u4f1a\u63a5\u7740\u4e0a\u6b21\u7684\u6267\u884c\u7ee7\u7eed\u5f80\u4e0b\u6267\u884c\u3002\u6240\u4ee5\u5728\u8fdb\u884c\u6761\u4ef6 \u5224\u65ad\u65f6\u5019\uff0c\u53ef\u4ee5\u5148\u628await\u8bed\u53e5\u5ffd\u7565\u4e0d\u8ba1\u6765\u8fdb\u884c\u8003\u8651;\u663e\u7136\uff0c\u8981\u786e\u4fdd\u7a0b\u5e8f\u4e00\u5b9a\u8981\u6267\u884c\uff0c\u5e76\u4e14\u8981 \u4fdd\u8bc1\u7a0b\u5e8f\u76f4\u5230\u6ee1\u8db3\u4e00\u5b9a\u7684\u6761\u4ef6\u518d\u6267\u884c\uff0c\u8981\u4f7f\u7528while\u8fdb\u884c\u7b49\u5f85\uff0c\u76f4\u5230\u6ee1\u8db3\u6761\u4ef6\u624d\u7ee7\u7eed\u5f80\u4e0b\u6267\u884c<\/p>\n","protected":false},"excerpt":{"rendered":"<p>wait() \u3001notify\/notifyAll()\u65b9\u6cd5\u662f Object \u7684\u672c\u5730 final \u65b9\u6cd5\uff0c\u65e0\u6cd5\u88ab\u91cd\u5199 [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[118],"tags":[],"class_list":["post-9774","post","type-post","status-publish","format-standard","hentry","category-java"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9774","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\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=9774"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9774\/revisions"}],"predecessor-version":[{"id":9775,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9774\/revisions\/9775"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=9774"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=9774"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=9774"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}