{"height":"190","version":"1.0","image_url":null,"blog_url":"https://amachang.hatenablog.com/","provider_url":"https://hatena.blog","title":" spin_lock \u3068\u306f","provider_name":"Hatena Blog","url":"https://amachang.hatenablog.com/entry/20080618/1213763948","blog_title":"IT\u6226\u8a18","description":"\u4e00\u65e5\u4e00\u56de\u30b9\u30ec\u30c3\u30c9\u306e\u52c9\u5f37 spin_lock \u3068\u306f \u4eca\u306e\u3068\u3053\u308d\u306e\u7406\u89e3\u3067\u3059\u3002\u9593\u9055\u3063\u3066\u3044\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002 \u30b9\u30ec\u30c3\u30c9\u304c\u4f11\u6b62\u72b6\u614b\u306b\u306a\u3089\u306a\u3044\u3002 \u30ed\u30c3\u30af\u304c\u53d6\u5f97\u3067\u304d\u306a\u3044\u5834\u5408\u306f\u3001 while (1) trylock() \u306e\u3088\u3046\u306b\u30b9\u30ec\u30c3\u30c9\u304c\u7121\u9650\u30eb\u30fc\u30d7\u306e\u3088\u3046\u306a\u72b6\u614b\u3067\u30ed\u30c3\u30af\u304c\u53d6\u5f97\u3067\u304d\u308b\u306e\u3092\u5f85\u3061\u7d9a\u3051\u308b\u3002 \u5229\u70b9 \u30b9\u30ec\u30c3\u30c9\u304c\u4f11\u6b62\u72b6\u614b\u306b\u306a\u3089\u306a\u3044\u306e\u3067 mutex \u3092\u4f7f\u3046\u3088\u308a CPU \u3092\u5360\u6709\u3057\u3066\u3044\u308b\u6642\u9593\u304c\u9577\u3044\u306e\u3067\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30b9\u30a4\u30c3\u30c1\u304c\u767a\u751f\u3059\u308b\u56de\u6570\u304c\u5c11\u306a\u3044\u3002 \u6b20\u70b9 \u30b9\u30ec\u30c3\u30c9\u304c\u4f11\u6b62\u72b6\u614b\u306b\u306a\u3089\u306a\u3044\u306e\u3067\u3001 lock \u4e2d\u306f\uff08\u5272\u308a\u8fbc\u307f\u304c\u767a\u751f\u3057\u306a\u3044\u3068\uff09\u4ed6\u306e\u30b9\u30ec\u30c3\u30c9\u3084\u30d7\u30ed\u30bb\u30b9\u304c\u305d\u306e CPU \u3092\u4f7f\u3048\u306a\u304f\u306a\u308b\u3002 \u6628\u65e5\u306e mutex \u3067\u4f5c\u3063\u305f\u30ad\u30e5\u2026","width":"100%","author_url":"https://blog.hatena.ne.jp/amachang/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Famachang.hatenablog.com%2Fentry%2F20080618%2F1213763948\" title=\" spin_lock \u3068\u306f - IT\u6226\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_name":"amachang","categories":["C++"],"type":"rich","published":"2008-06-18 13:39:08"}