CopyOnWriteArrayList\uff08\u514d\u9501\u5bb9\u5668\uff09\u7684\u597d\u5904\u4e4b\u4e00\u9577\u5f53\u591a\u4e2a\u8fed\u4ee3\u5668\u540c\u65f6\u904d\u5386\u548c\u4fee\u6539\u8fd9\u4e2a\u5217\u8868\u65f6\uff0c\u4e0d \u4f1a\u629b\u51fa ConcurrentModificationException\u3002\u5728 CopyOnWriteArrayList \u4e2d\uff0c\u5199\u5165\u5c06\u5bfc\u81f4\u521b\u5efa \u6574\u4e2a\u5e95\u5c42\u6570\u7ec4\u7684\u526f\u672c\uff0c\u800c\u6e90\u6570\u7ec4\u5c06\u4fdd\u7559\u5728\u539f\u5730\uff0c\u4f7f\u5f97\u590d\u5236\u7684\u6570\u7ec4\u5728\u88ab\u4fee\u6539\u65f6\uff0c\u8bfb\u53d6\u64cd\u4f5c\u53ef\u4ee5\u5b89 \u5168\u5730\u6267\u884c\u3002
\n1\u3001\t\u7531\u4e8e\u5199\u64cd\u4f5c\u7684\u65f6\u5019\uff0c\u9700\u8981\u62f7\u8d1d\u6570\u7ec4\uff0c\u4f1a\u6d88\u8017\u5185\u5b58\uff0c\u5982\u679c\u539f\u6570\u7ec4\u7684\u5185\u5bb9\u6bd4\u8f83\u591a\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef \u80fd\u5bfc\u81f4young gc\u6216\u8005full gc;
\n2\u3001\t\u4e0d\u80fd\u7528\u4e8e\u5b9e\u65f6\u8bfb\u7684\u573a\u666f\uff0c\u50cf\u62f7\u8d1d\u6570\u7ec4\u3001\u65b0\u589e\u5143\u7d20\u90fd\u9700\u8981\u65f6\u95f4\uff0c\u6240\u4ee5\u8c03\u7528\u4e00\u4e2aset\u64cd\u4f5c\u540e\uff0c \u8bfb\u53d6\u5230\u6570\u636e\u53ef\u80fd\u8fd8\u662f\u65e7\u7684\uff0c\u867d\u7136CopyOnWriteArrayList\u80fd\u505a\u5230\u6700\u7ec8\u4e00\u81f4\u6027\uff0c\u4f46\u662f\u8fd8\u662f\u6ca1\u6cd5 \u6ee1\u8db3\u5b9e\u65f6\u6027\u8981\u6c42;
\nCopyOnWriteArrayList \u900f\u9732\u7684\u601d\u60f3<\/p>\n
1\u3001\t\u8bfb\u5199\u5206\u79bb\uff0c\u8bfb\u548c\u5199\u5206\u5f00
\n2\u3001\t\u6700\u7ec8\u4e00\u81f4\u6027
\n3\u3001\t\u4f7f\u7528\u53e6\u5916\u5f00\u8f9f\u7a7a\u95f4\u7684\u601d\u8def\uff0c\u6765\u89e3\u51b3\u5e76\u53d1\u51b2\u7a81
\n3\u3001\t\u5c31\u7eea\u6001\u8be5\u72b6\u6001\u4e0b\u7684\u7ebf\u7a0b\u5df2\u7ecf\u83b7\u5f97\u6267\u884c\u6240\u9700\u7684\u6240\u6709\u8d44\u6e90\uff0c\u53ea\u8981CPU\u5206\u914d\u6267\u884c\u6743\u5c31\u80fd\u8fd0\u884c\u3002 \u6240\u6709\u5c31\u7eea\u6001\u7684\u7ebf\u7a0b\u5b58\u653e\u5728\u5c31\u7eea\u961f\u5217\u4e2d\u3002
\n4\u3001\t\u8fd0\u884c\u6001\u83b7\u5f97CPU\u6267\u884c\u6743\uff0c\u6b63\u5728\u6267\u884c\u7684\u7ebf\u7a0b\u3002\u7531\u4e8e\u4e00\u4e2aCPU\u540c\u4e00\u65f6\u523b\u53ea\u80fd\u6267\u884c\u4e00\u6761\u7ebf\u7a0b\uff0c \u56e0\u6b64\u6bcf\u4e2aCPU\u6bcf\u4e2a\u65f6\u523b\u53ea\u6709\u4e00\u6761\u8fd0\u884c\u6001\u7684\u7ebf\u7a0b\u3002
\n\u963b\u585e\u6001\uff1a
\n\u5f53\u4e00\u6761\u6b63\u5728\u6267\u884c\u7684\u7ebf\u7a0b\u8bf7\u6c42\u67d0\u4e00\u8d44\u6e90\u5931\u8d25\u65f6\uff0c\u5c31\u4f1a\u8fdb\u5165\u963b\u585e\u6001\u3002\u800c\u5728Java\u4e2d\uff0c\u963b\u585e\u6001\u4e13\u6307\u8bf7 \u6c42\u9501\u5931\u8d25\u65f6\u8fdb\u5165\u7684\u72b6\u6001\u3002\u7531\u4e00\u4e2a\u963b\u585e\u961f\u5217\u5b58\u653e\u6240\u6709\u963b\u585e\u6001\u7684\u7ebf\u7a0b\u3002\u5904\u4e8e\u963b\u585e\u6001\u7684\u7ebf\u7a0b\u4f1a\u4e0d\u65ad\u8bf7 \u6c42\u8d44\u6e90\uff0c\u4e00\u65e6\u8bf7\u6c42\u6210\u529f\uff0c\u5c31\u4f1a\u8fdb\u5165\u5c31\u7eea\u961f\u5217\uff0c\u7b49\u5f85\u6267\u884c\u3002PS\uff1a\u9501\u3001I0\u3001Socket\u7b49\u90fd\u8d44\u6e90\u3002
\n\u7b49\u5f85\u6001\uff1a
\n\u5f53\u524d\u7ebf\u7a0b\u4e2d\u8c03\u7528wait\u3001join\u3001park\u51fd\u6570\u65f6\uff0c\u5f53\u524d\u7ebf\u7a0b\u5c31\u4f1a\u8fdb\u5165\u7b49\u5f85\u6001\u3002\u4e5f\u6709\u4e00\u4e2a\u7b49\u5f85\u961f\u5217\u5b58 \u653e\u6240\u6709\u7b49\u5f85\u6001\u7684\u7ebf\u7a0b\u3002\u7ebf\u7a0b\u5904\u4e8e\u7b49\u5f85\u6001\u8868\u793a\u5b83\u9700\u8981\u7b49\u5f85\u5176\u4ed6\u7ebf\u7a0b\u7684\u6307\u793a\u624d\u80fd\u7ee7\u7eed\u8fd0\u884c\u3002\u8fdb\u5165\u7b49 \u5f85\u6001\u7684\u7ebf\u7a0b\u4f1a\u91ca\u653eCPU\u6267\u884c\u6743\uff0c\u5e76\u91ca\u653e\u8d44\u6e90(\u5982\uff1a\u9501)
\n\u8d85\u65f6\u7b49\u5f85\u6001\uff1a
\n\u5f53\u8fd0\u884c\u4e2d\u7684\u7ebf\u7a0b\u8c03\u7528sleep (time), wait, join\u3001parkNanos, parkUntil\u65f6\uff0c\u5c31\u4f1a\u8fdb\u5165\u8be5\u72b6\u6001; \u5b83\u548c\u7b49\u5f85\u6001\u4e00\u6837\uff0c\u5e76\u4e0d\u662f\u56e0\u4e3a\u8bf7\u6c42\u4e0d\u5230\u8d44\u6e90\uff0c\u800c\u662f\u4e3b\u52a8\u8fdb\u5165\uff0c\u5e76\u4e14\u8fdb\u5165\u540e\u9700\u8981\u5176\u4ed6\u7ebf\u7a0b\u5524\u9192; \u8fdb\u5165\u8be5\u72b6\u6001\u540e\u91ca\u653eCPU\u6267\u884c\u6743\u548c\u5360\u6709\u7684\u8d44\u6e90\u3002\u4e0e\u7b49\u5f85\u6001\u7684\u533a\u522b\uff1a\u5230\u4e86\u8d85\u65f6\u65f6\u95f4\u540e\u81ea\u52a8\u8fdb\u5165\u963b \u585e\u961f\u5217\uff0c\u5f00\u59cb\u7ade\u4e89\u9501\u3002
\n\u7ec8\u6b62\u6001\uff1a
\n\u7ebf\u7a0b\u6267\u884c\u7ed3\u675f\u540e\u7684\u72b6\u6001\u3002
\n\u6ce8\u610f\uff1a
\n1\u3001\twait()\u65b9\u6cd5\u4f1a\u91ca\u653eCPU\u6267\u884c\u6743\u548c\u5360\u6709\u7684\u9501\u3002
\n2\u3001\tsleep (long)\u65b9\u6cd5\u4ec5\u91ca\u653eCPU\u4f7f\u7528\u6743\uff0c\u9501\u4ecd\u7136\u5360\u7528;\u7ebf\u7a0b\u88ab\u653e\u5165\u8d85\u65f6\u7b49\u5f85\u961f\u5217\uff0c\u4e0eyield \u76f8\u6bd4\uff0c\u5b83\u4f1a\u4f7f\u7ebf\u7a0b\u8f83\u957f\u65f6\u95f4\u5f97\u4e0d\u5230\u8fd0\u884c\u3002
\n3\u3001\tyield()\u65b9\u6cd5\u4ec5\u91ca\u653eCPU\u6267\u884c\u6743\uff0c\u9501\u4ecd\u7136\u5360\u7528\uff0c\u7ebf\u7a0b\u4f1a\u88ab\u653e\u5165\u5c31\u7eea\u961f\u5217\uff0c\u4f1a\u5728\u77ed\u65f6\u95f4\u5185\u518d \u6b21\u6267\u884c\u3002
\n4\u3001\twait\u548cnotify\u5fc5\u987b\u914d\u5957\u4f7f\u7528\uff0c\u5373\u5fc5\u987b\u4f7f\u7528\u540c\u4e00\u628a\u9501\u8c03\u7528;<\/p>\n","protected":false},"excerpt":{"rendered":"
CopyOnWriteArrayList\uff08\u514d\u9501\u5bb9\u5668\uff09\u7684\u597d\u5904\u4e4b\u4e00\u9577\u5f53\u591a\u4e2a\u8fed\u4ee3\u5668\u540c\u65f6\u904d\u5386\u548c\u4fee\u6539\u8fd9\u4e2a\u5217\u8868\u65f6\uff0c\u4e0d \u4f1a\u629b […]<\/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-11047","post","type-post","status-publish","format-standard","hentry","category-java"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11047","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=11047"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11047\/revisions"}],"predecessor-version":[{"id":11048,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11047\/revisions\/11048"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=11047"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=11047"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=11047"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}