{"id":65031,"date":"2025-05-03T14:04:04","date_gmt":"2025-05-03T06:04:04","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65031\/"},"modified":"2025-05-03T14:04:04","modified_gmt":"2025-05-03T06:04:04","slug":"%e4%bd%bf%e7%94%a8-volatile-%e5%8f%98%e9%87%8f%e6%8e%a7%e5%88%b6%e5%a4%9a%e7%ba%bf%e7%a8%8b%e9%80%bb%e8%be%91%ef%bc%8c%e4%b8%ba%e4%bb%80%e4%b9%88%e5%87%ba%e7%8e%b0%e5%8d%a1%e6%ad%bb%e7%8e%b0-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65031\/","title":{"rendered":"\u4f7f\u7528 volatile \u53d8\u91cf\u63a7\u5236\u591a\u7ebf\u7a0b\u903b\u8f91\uff0c\u4e3a\u4ec0\u4e48\u51fa\u73b0\u5361\u6b7b\u73b0\u8c61\uff1f"},"content":{"rendered":"

\"\u4f7f\u7528<\/p>\n

\u591a\u7ebf\u7a0b\u9898\u76ee\u6c42\u52a9\uff1a\u4f7f\u7528 volatile \u53d8\u91cf\u51fa\u73b0\u5361\u6b7b\u95ee\u9898<\/strong><\/p>\n

\u95ee\u9898\uff1a<\/strong><\/p>\n

\u4f7f\u7528 volatile \u53d8\u91cf\u63a7\u5236\u591a\u7ebf\u7a0b\u903b\u8f91\uff0c\u5374\u5728\u8fd0\u884c\u65f6\u5361\u6b7b\u5728 while \u5faa\u73af\u4e2d\u3002 volatile \u673a\u5236\u4e0b\u4e0d\u4f1a\u6307\u4ee4\u91cd\u6392\u5e8f\uff0c\u5374\u4ecd\u7136\u4f1a\u51fa\u73b0\u5361\u6b7b\u73b0\u8c61\uff1f<\/p>\n

\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><\/p>\n

volatile \u53d8\u91cf\u786e\u5b9e\u53ef\u4ee5\u9632\u6b62\u6307\u4ee4\u91cd\u6392\u5e8f\uff0c\u4f46\u6709\u4ee5\u4e0b\u51e0\u4e2a\u53ef\u80fd\u7684\u539f\u56e0\u5bfc\u81f4\u5361\u6b7b\uff1a<\/p>\n

    \n
  1. \u5fd9\u7b49\u5f85\uff1a<\/strong> \u4f60\u7684 while \u5faa\u73af\u4f7f\u7528\u4e86\u5fd9\u7b49\u5f85\uff0c\u5373\u7ebf\u7a0b\u4e0d\u65ad\u68c0\u67e5\u6761\u4ef6\u662f\u5426\u6ee1\u8db3\u3002\u8fd9\u4f1a\u6301\u7eed\u5360\u7528 CPU \u8d44\u6e90\uff0c\u53ef\u80fd\u5bfc\u81f4\u5361\u6b7b\u3002<\/li>\n
  2. \u7f3a\u5c11\u5524\u9192\u673a\u5236\uff1a<\/strong> volatile \u53d8\u91cf\u7684\u4f5c\u7528\u662f\u4fdd\u8bc1\u53d8\u91cf\u5728\u6240\u6709\u7ebf\u7a0b\u4e2d\u90fd\u662f\u53ef\u89c1\u7684\uff0c\u4f46\u5b83\u672c\u8eab\u65e0\u6cd5\u5524\u9192\u7b49\u5f85\u7684\u7ebf\u7a0b\u3002\u5728\u4f60\u7684\u4f8b\u5b50\u4e2d\uff0c\u7ebf\u7a0b\u65e0\u6cd5\u77e5\u9053\u6761\u4ef6\u4f55\u65f6\u6ee1\u8db3\uff0c\u5bfc\u81f4\u5361\u6b7b\u3002<\/li>\n
  3. \u9501\u987a\u5e8f\u95ee\u9898\uff1a<\/strong> \u5982\u679c\u4f60\u7684\u4ee3\u7801\u4e2d\u8fd8\u6709\u5176\u4ed6\u9501\uff0c\u8bf7\u68c0\u67e5\u9501\u7684\u83b7\u53d6\u987a\u5e8f\u662f\u5426\u6b63\u786e\u3002\u9519\u8bef\u7684\u9501\u987a\u5e8f\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6b7b\u9501\u3002<\/li>\n<\/ol>\n

    \u4f18\u5316\u5efa\u8bae\uff1a<\/strong><\/p>\n

    \u4e3a\u4e86\u89e3\u51b3\u5361\u6b7b\u95ee\u9898\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u5176\u4ed6\uff0c\u4f8b\u5982\uff1a<\/p>\n

      \n
    1. wt() \u548c notify()\/notifyAll()\uff1a<\/strong> \u8fd9\u662f\u4e00\u79cd\u7ecf\u5178\u7684\u7ebf\u7a0b\u540c\u6b65\u673a\u5236\uff0c\u53ef\u4ee5\u907f\u514d\u5fd9\u7b49\u5f85\uff0c\u8ba9\u7ebf\u7a0b\u5728\u6761\u4ef6\u4e0d\u6ee1\u8db3\u65f6\u8fdb\u5165\u7b49\u5f85\u72b6\u6001\uff0c\u5e76\u5728\u6761\u4ef6\u6ee1\u8db3\u65f6\u88ab\u5524\u9192\u3002<\/li>\n
    2. \u9501\uff1a<\/strong> \u5982\u679c\u5b58\u5728\u591a\u4e2a\u7ebf\u7a0b\u5171\u4eab\u8d44\u6e90\uff0c\u53ef\u4ee5\u4f7f\u7528\u9501\u6765\u4fdd\u8bc1\u7ebf\u7a0b\u95f4\u7684\u4e92\u65a5\u8bbf\u95ee\u3002\u786e\u4fdd\u4ee5\u6b63\u786e\u7684\u987a\u5e8f\u83b7\u53d6\u548c\u91ca\u653e\u9501\uff0c\u907f\u514d\u6b7b\u9501\u3002<\/li>\n<\/ol>\n

      \u4ee5\u4e0a\u5c31\u662f\u4f7f\u7528 volatile \u53d8\u91cf\u63a7\u5236\u591a\u7ebf\u7a0b\u903b\u8f91\uff0c\u51fa\u73b0\u5361\u6b7b\u73b0\u8c61\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

      \u591a\u7ebf\u7a0b\u9898\u76ee\u6c42\u52a9\uff1a\u4f7f\u7528 volatile \u53d8\u91cf\u51fa\u73b0\u5361\u6b7b\u95ee\u9898 \u95ee\u9898\uff1a \u4f7f\u7528 volatile \u53d8\u91cf\u63a7\u5236\u591a\u7ebf\u7a0b\u903b\u8f91\uff0c\u5374\u5728\u8fd0\u884c\u65f6\u5361\u6b7b\u5728 while \u5faa\u73af\u4e2d\u3002 volatile \u673a\u5236\u4e0b\u4e0d\u4f1a\u6307\u4ee4\u91cd\u6392\u5e8f\uff0c\u5374\u4ecd\u7136\u4f1a\u51fa\u73b0\u5361\u6b7b\u73b0\u8c61\uff1f \u89e3\u51b3\u65b9\u6848\uff1a volatile \u53d8\u91cf\u786e\u5b9e\u53ef\u4ee5\u9632\u6b62\u6307\u4ee4\u91cd\u6392\u5e8f\uff0c\u4f46\u6709\u4ee5\u4e0b\u51e0\u4e2a\u53ef\u80fd\u7684\u539f\u56e0\u5bfc\u81f4\u5361\u6b7b\uff1a \u5fd9\u7b49\u5f85\uff1a \u4f60\u7684 while \u5faa\u73af\u4f7f\u7528\u4e86\u5fd9\u7b49\u5f85\uff0c\u5373\u7ebf\u7a0b\u4e0d\u65ad\u68c0\u67e5\u6761\u4ef6\u662f\u5426\u6ee1\u8db3\u3002\u8fd9\u4f1a\u6301\u7eed\u5360\u7528 CPU \u8d44\u6e90\uff0c\u53ef\u80fd\u5bfc\u81f4\u5361\u6b7b\u3002 \u7f3a\u5c11\u5524\u9192\u673a\u5236\uff1a volatile \u53d8\u91cf\u7684\u4f5c\u7528\u662f\u4fdd\u8bc1\u53d8\u91cf\u5728\u6240\u6709\u7ebf\u7a0b\u4e2d\u90fd\u662f\u53ef\u89c1\u7684\uff0c\u4f46\u5b83\u672c\u8eab\u65e0\u6cd5\u5524\u9192\u7b49\u5f85\u7684\u7ebf\u7a0b\u3002\u5728\u4f60\u7684\u4f8b\u5b50\u4e2d\uff0c\u7ebf\u7a0b\u65e0\u6cd5\u77e5\u9053\u6761\u4ef6\u4f55\u65f6\u6ee1\u8db3\uff0c\u5bfc\u81f4\u5361\u6b7b\u3002 \u9501\u987a\u5e8f\u95ee\u9898\uff1a \u5982\u679c\u4f60\u7684\u4ee3\u7801\u4e2d\u8fd8\u6709\u5176\u4ed6\u9501\uff0c\u8bf7\u68c0\u67e5\u9501\u7684\u83b7\u53d6\u987a\u5e8f\u662f\u5426\u6b63\u786e\u3002\u9519\u8bef\u7684\u9501\u987a\u5e8f\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6b7b\u9501\u3002 \u4f18\u5316\u5efa\u8bae\uff1a \u4e3a\u4e86\u89e3\u51b3\u5361\u6b7b\u95ee\u9898\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u5176\u4ed6\uff0c\u4f8b\u5982\uff1a wt() \u548c notify()\/notifyAll()\uff1a \u8fd9\u662f\u4e00\u79cd\u7ecf\u5178\u7684\u7ebf\u7a0b\u540c\u6b65\u673a\u5236\uff0c\u53ef\u4ee5\u907f\u514d\u5fd9\u7b49\u5f85\uff0c\u8ba9\u7ebf\u7a0b\u5728\u6761\u4ef6\u4e0d\u6ee1\u8db3\u65f6\u8fdb\u5165\u7b49\u5f85\u72b6\u6001\uff0c\u5e76\u5728\u6761\u4ef6\u6ee1\u8db3\u65f6\u88ab\u5524\u9192\u3002 \u9501\uff1a \u5982\u679c\u5b58\u5728\u591a\u4e2a\u7ebf\u7a0b\u5171\u4eab\u8d44\u6e90\uff0c\u53ef\u4ee5\u4f7f\u7528\u9501\u6765\u4fdd\u8bc1\u7ebf\u7a0b\u95f4\u7684\u4e92\u65a5\u8bbf\u95ee\u3002\u786e\u4fdd\u4ee5\u6b63\u786e\u7684\u987a\u5e8f\u83b7\u53d6\u548c\u91ca\u653e\u9501\uff0c\u907f\u514d\u6b7b\u9501\u3002 \u4ee5\u4e0a\u5c31\u662f\u4f7f\u7528 volatile \u53d8\u91cf\u63a7\u5236\u591a\u7ebf\u7a0b\u903b\u8f91\uff0c\u51fa\u73b0\u5361\u6b7b\u73b0\u8c61\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/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-65031","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65031","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=65031"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65031\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65031"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65031"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65031"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}