{"width":"100%","blog_url":"https://rubytips86.hatenablog.com/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Frubytips86.hatenablog.com%2Fentry%2F2014%2F03%2F31%2F133921\" title=\"\u30d5\u30a1\u30a4\u30eb\u3092\u30ed\u30c3\u30af\u3059\u308b - Ruby Tips!\" 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":"rubytips86","description":"\u30d5\u30a1\u30a4\u30eb\u306e\u30ed\u30c3\u30af\u306b\u306f\u5171\u6709\u30ed\u30c3\u30af\u3068\u6392\u4ed6\u30ed\u30c3\u30af\u304c\u3042\u308b\u3002\u5171\u6709\u30ed\u30c3\u30af\u306f\u4e3b\u306b\u8aad\u307f\u8fbc\u307f\u6642\u306b\u4f7f\u7528\u3057\u3001\u6392\u4ed6\u30ed\u30c3\u30af\u306f\u4e3b\u306b\u66f8\u304d\u8fbc\u307f\u6642\u306b\u4f7f\u7528\u3059\u308b\u3002Ruby\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u30ed\u30c3\u30af\u3059\u308b\u306b\u306fFile#flock\u3092\u4f7f\u3046\u3002\u5171\u6709\u30ed\u30c3\u30af\u3092\u884c\u3046\u306b\u306fFile::LOCK_SH\u3092\u3001\u6392\u4ed6\u30ed\u30c3\u30af\u3092\u884c\u3046\u306b\u306fFile::LOCK_EX\u3092\u6307\u5b9a\u3059\u308b\u3002 open('foo.txt'){|f| f.flock(File::LOCK_SH) # \u5171\u6709\u30ed\u30c3\u30af f.read } open('foo.txt'){|f| f.flock(File::LOCK_EX) # \u6392\u4ed6\u30ed\u30c3\u30af f.write \"hoge\" } \u30d5\u30a1\u30a4\u30eb\u306e\u30ed\u30c3\u30af\u306f\u30d5\u30a1\u30a4\u30eb\u304c\u9589\u3058\u3089\u308c\u308b\u3068\u81ea\u52d5\u7684\u306b\u2026","published":"2014-03-31 13:39:21","height":"190","url":"https://rubytips86.hatenablog.com/entry/2014/03/31/133921","type":"rich","provider_url":"https://hatena.blog","title":"\u30d5\u30a1\u30a4\u30eb\u3092\u30ed\u30c3\u30af\u3059\u308b","provider_name":"Hatena Blog","image_url":null,"categories":[],"blog_title":"Ruby Tips!","author_url":"https://blog.hatena.ne.jp/rubytips86/","version":"1.0"}