{"id":10433,"date":"2023-11-28T21:34:40","date_gmt":"2023-11-28T13:34:40","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=10433"},"modified":"2023-11-28T21:34:46","modified_gmt":"2023-11-28T13:34:46","slug":"java-zhongvolatile-neng-shi-de-yi-ge-fei-yuan-zi-c","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/java-zhongvolatile-neng-shi-de-yi-ge-fei-yuan-zi-c\/","title":{"rendered":"Java\u4e2dvolatile\u80fd\u4f7f\u5f97\u4e00\u4e2a\u975e\u539f\u5b50\u64cd\u4f5c\u53d8\u6210\u539f\u5b50\u64cd\u4f5c\u5417?"},"content":{"rendered":"<p>1\u3001\u5173\u952e\u5b57 volatile \u7684\u4e3b\u8981\u4f5c\u7528\u662f\u4f7f\u53d8\u91cf\u5728\u591a\u4e2a\u7ebf\u7a0b\u95f4\u53ef\u89c1\uff0c\u4f46\u65e0\u6cd5\u4fdd\u8bc1\u539f\u5b50\u6027\uff0c\u5bf9\u4e8e\u591a\u4e2a\u7ebf\u7a0b\u8bbf\u95ee\u540c\u4e00\u4e2a\u5b9e\u4f8b\u53d8\u91cf\u9700\u8981\u52a0\u9501\u8fdb\u884c\u540c\u6b65\u3002<br \/>\n2\u3001\u867d\u7136 volatile \u53ea\u80fd\u4fdd\u8bc1\u53ef\u89c1\u6027\u4e0d\u80fd\u4fdd\u8bc1\u539f\u5b50\u6027\uff0c\u4f46\u7528 volatile \u4fee\u9970 long\u548c double \u53ef\u4ee5\u4fdd\u8bc1\u5176\u64cd\u4f5c\u539f\u5b50\u6027\u3002<br \/>\n\u6240\u4ee5\u4ece Oracle JavaSpec \u91cc\u9762\u53ef\u4ee5\u770b\u5230\uff1a<br \/>\n1\u3001\u5bf9\u4e8e 64 \u4f4d\u7684 long \u548c double\uff0c\u5982\u679c\u6ca1\u6709\u88ab volatile \u4fee\u9970\uff0c\u90a3\u4e48\u5bf9\u5176\u64cd\u4f5c\u53ef\u4ee5\u4e0d\u662f\u539f\u5b50\u7684\u3002\u5728\u64cd\u4f5c\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u5206\u6210\u4e24\u6b65\uff0c\u6bcf\u6b21\u5bf9 32 \u4f4d\u64cd\u4f5c\u3002<br \/>\n2\u3001\u5982\u679c\u4f7f\u7528 volatile \u4fee\u9970 long \u548c double\uff0c\u90a3\u4e48\u5176\u8bfb\u5199\u90fd\u662f\u539f\u5b50\u64cd\u4f5c<br \/>\n3\u3001\u5bf9\u4e8e 64 \u4f4d\u7684\u5f15\u7528\u5730\u5740\u7684\u8bfb\u5199\uff0c\u90fd\u662f\u539f\u5b50\u64cd\u4f5c<br \/>\n4\u3001\u5728\u5b9e\u73b0 JVM \u65f6\uff0c\u53ef\u4ee5\u81ea\u7531\u9009\u62e9\u662f\u5426\u628a\u8bfb\u5199 long \u548c double \u4f5c\u4e3a\u539f\u5b50\u64cd\u4f5c<br \/>\n5\u3001\u63a8\u8350 JVM \u5b9e\u73b0\u4e3a\u539f\u5b50\u64cd\u4f5c<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001\u5173\u952e\u5b57 volatile \u7684\u4e3b\u8981\u4f5c\u7528\u662f\u4f7f\u53d8\u91cf\u5728\u591a\u4e2a\u7ebf\u7a0b\u95f4\u53ef\u89c1\uff0c\u4f46\u65e0\u6cd5\u4fdd\u8bc1\u539f\u5b50\u6027\uff0c\u5bf9\u4e8e\u591a\u4e2a\u7ebf\u7a0b\u8bbf\u95ee\u540c\u4e00\u4e2a\u5b9e\u4f8b [&hellip;]<\/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-10433","post","type-post","status-publish","format-standard","hentry","category-javabase"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10433","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=10433"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10433\/revisions"}],"predecessor-version":[{"id":10434,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10433\/revisions\/10434"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=10433"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=10433"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=10433"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}