{"description":"\u4e0a\u306e\u307b\u3046\u3067 wait \u3068 notify \u306b\u3064\u3044\u3066\u89e6\u308c\u307e\u3057\u305f\u304c\u3001\u4f55\u3082\u4f8b\u793a\u3057\u3066\u3044\u306a\u304b\u3063\u305f\u306e\u3067\u3061\u3087\u3063\u3068\u66f8\u3044\u3066\u307f\u307e\u3059\u3002 wait \u3068 notify \u3092\u5229\u7528\u3057\u305f\u30d1\u30bf\u30fc\u30f3\u3067\u79c1\u304c\u3088\u304f\u884c\u306a\u3046\u306e\u306f\u3001busy-wait \u306a\u30eb\u30fc\u30d7\u306e\u4ee3\u308f\u308a\u306b wait \u3068 notify \u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u305f\u3068\u3048\u3070 flag \u304c true \u306b\u306a\u308b\u307e\u3067\u5f85\u3064\u3068\u3044\u3046 busy-wait \u306a\u30eb\u30fc\u30d7\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 while( !flag ) Thread.sleep( 500 ); \u4e0a\u8a18\u306e\u5834\u5408\u3001500ms \u6bce\u306b flag \u306b\u5bfe\u3059\u308b\u691c\u67fb\u51e6\u7406\u304c\u8d70\u308a\u3001CPU\u3092\u7121\u99c4\u306b\u6d88\u8cbb\u3057\u307e\u3059\u3002 synchronized, wait \u3092\u5229\u7528\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u3088\u2026","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","author_name":"NetPenguin","categories":["JAVA"],"height":"190","version":"1.0","blog_url":"https://netpenguin.hatenadiary.org/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnetpenguin.hatenadiary.org%2Fentry%2F20040616%2F1087402143\" title=\"wait \u3068 notify - NetPenguin\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_url":"https://blog.hatena.ne.jp/NetPenguin/","blog_title":"NetPenguin\u306e\u65e5\u8a18","title":"wait \u3068 notify","type":"rich","url":"https://netpenguin.hatenadiary.org/entry/20040616/1087402143","width":"100%","published":"2004-06-16 01:09:03","image_url":null}