{"id":35747,"date":"2024-11-26T09:26:27","date_gmt":"2024-11-26T01:26:27","guid":{"rendered":"https:\/\/fwq.ai\/blog\/35747\/"},"modified":"2024-11-26T09:26:27","modified_gmt":"2024-11-26T01:26:27","slug":"linkedblockingqueue-%e4%b8%ad-h-next-h-%e7%9a%84%e4%bd%9c%e7%94%a8%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/35747\/","title":{"rendered":"LinkedBlockingQueue \u4e2d h.next = h \u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"

\"LinkedBlockingQueue<\/p>\n

linkedblockingqueue \u6e90\u7801\u7591\u60d1<\/strong><\/p>\n

\u5728 linkedblockingqueue \u7684\u6e90\u7801\u4e2d\u5e38\u4f1a\u770b\u5230\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n

Node<E> h = head;\nNode<E> first = h.next;\nh.next = h; \/\/ help GC<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u884c\u4ee3\u7801\u7684\u76ee\u7684\u662f\u5e2e\u52a9\uff08gc\uff09\u51cf\u5c11\u6d6e\u52a8\u5783\u573e\u7684\u4ea7\u751f\u3002<\/p>\n
\u6d6e\u52a8\u5783\u573e\u662f\u6307\u4e0d\u518d\u53ef\u8fbe\uff08\u4ece gc \u6839\u8282\u70b9\u65e0\u6cd5\u8bbf\u95ee\uff09\u4f46\u5c1a\u672a\u88ab gc \u56de\u6536\u7684\u5bf9\u8c61\u3002\u5728\u5e76\u53d1\u7684 gc \u573a\u666f\u4e2d\uff0c\u5f53\u7ebf\u7a0b\u6b63\u5728\u904d\u5386\u94fe\u8868\u5e76\u6301\u6709\u5bf9\u94fe\u8868\u5143\u7d20\u7684\u5f15\u7528\u65f6\uff0c\u53ef\u80fd\u4f1a\u4ea7\u751f\u6d6e\u52a8\u5783\u573e\u3002\u5982\u679c gc \u6b64\u65f6\u56de\u6536\u4e86\u8fd9\u4e9b\u5143\u7d20\uff0c\u4f1a\u5bfc\u81f4\u904d\u5386\u8fc7\u7a0b\u51fa\u9519\u3002<\/p>\n
h.next = h \u8fd9\u884c\u4ee3\u7801\u5c06 head \u8282\u70b9\u7684 next \u5f15\u7528\u6307\u5411\u81ea\u8eab\uff0c\u5f62\u6210\u4e00\u4e2a\u5faa\u73af\u5f15\u7528\u3002\u8fd9\u4f7f\u5f97 gc \u65e0\u6cd5\u901a\u8fc7 head \u8282\u70b9\u8bbf\u95ee\u94fe\u8868\u4e2d\u7684\u5176\u4ed6\u5143\u7d20\uff0c\u4ece\u800c\u907f\u514d\u4e86\u4e0a\u8ff0\u573a\u666f\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u51cf\u5c11\u6d6e\u52a8\u5783\u573e\u7684\u4ea7\u751f\uff0c\u63d0\u9ad8 gc \u6548\u7387\u3002<\/p>\n
\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u8be5\u4ee3\u7801\u4ec5\u5728 openjdk 6 \u53ca\u66f4\u65b0\u7248\u672c\u4e2d\u4f7f\u7528\uff0c\u56e0\u4e3a\u4ece openjdk 7 \u5f00\u59cb\uff0ccms \u6536\u96c6\u5668\u5df2\u4e0d\u518d\u4f7f\u7528\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662fLinkedBlockingQueue \u4e2d h.next = h \u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
linkedblockingqueue \u6e90\u7801\u7591\u60d1 \u5728 linkedblockingqueue \u7684\u6e90\u7801\u4e2d\u5e38\u4f1a\u770b\u5230\u4ee5\u4e0b\u4ee3\u7801\uff1a Node<E> h = head; Node<E> first = h.next; h.next = h; \/\/ help GC \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u884c\u4ee3\u7801\u7684\u76ee\u7684\u662f\u5e2e\u52a9\uff08gc\uff09\u51cf\u5c11\u6d6e\u52a8\u5783\u573e\u7684\u4ea7\u751f\u3002 \u6d6e\u52a8\u5783\u573e\u662f\u6307\u4e0d\u518d\u53ef\u8fbe\uff08\u4ece gc \u6839\u8282\u70b9\u65e0\u6cd5\u8bbf\u95ee\uff09\u4f46\u5c1a\u672a\u88ab gc \u56de\u6536\u7684\u5bf9\u8c61\u3002\u5728\u5e76\u53d1\u7684 gc \u573a\u666f\u4e2d\uff0c\u5f53\u7ebf\u7a0b\u6b63\u5728\u904d\u5386\u94fe\u8868\u5e76\u6301\u6709\u5bf9\u94fe\u8868\u5143\u7d20\u7684\u5f15\u7528\u65f6\uff0c\u53ef\u80fd\u4f1a\u4ea7\u751f\u6d6e\u52a8\u5783\u573e\u3002\u5982\u679c gc \u6b64\u65f6\u56de\u6536\u4e86\u8fd9\u4e9b\u5143\u7d20\uff0c\u4f1a\u5bfc\u81f4\u904d\u5386\u8fc7\u7a0b\u51fa\u9519\u3002 h.next = h \u8fd9\u884c\u4ee3\u7801\u5c06 head \u8282\u70b9\u7684 next \u5f15\u7528\u6307\u5411\u81ea\u8eab\uff0c\u5f62\u6210\u4e00\u4e2a\u5faa\u73af\u5f15\u7528\u3002\u8fd9\u4f7f\u5f97 gc \u65e0\u6cd5\u901a\u8fc7 head \u8282\u70b9\u8bbf\u95ee\u94fe\u8868\u4e2d\u7684\u5176\u4ed6\u5143\u7d20\uff0c\u4ece\u800c\u907f\u514d\u4e86\u4e0a\u8ff0\u573a\u666f\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u51cf\u5c11\u6d6e\u52a8\u5783\u573e\u7684\u4ea7\u751f\uff0c\u63d0\u9ad8 gc \u6548\u7387\u3002 \u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u8be5\u4ee3\u7801\u4ec5\u5728 openjdk 6 \u53ca\u66f4\u65b0\u7248\u672c\u4e2d\u4f7f\u7528\uff0c\u56e0\u4e3a\u4ece openjdk 7 \u5f00\u59cb\uff0ccms \u6536\u96c6\u5668\u5df2\u4e0d\u518d\u4f7f\u7528\u3002 \u4ee5\u4e0a\u5c31\u662fLinkedBlockingQueue \u4e2d h.next […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-35747","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/35747","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=35747"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/35747\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=35747"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=35747"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=35747"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}