eBPF ã®ç´¹ä»‹ - Qiita
富士通ã®éžå…¬å¼Advent Calendar 2018 9日目 ã®è¨˜äº‹ã§ã™ã€‚記事ã®å†…容ã¯å€‹äººã®è¦‹è§£ã§ã‚ã‚Šã€æ‰€å±žã™ã‚‹çµ„織を代表ã™ã‚‹ã‚‚ã®ã§ã¯ã‚ã‚Šã¾ã›ã‚“。 ã¯ã˜ã‚ã« Linux kernel ã®æ¯”較的新ã—ã„機能ã§ã‚ã‚‹ eBPF ã«ã¤ã„ã¦ç°¡å˜ã«èª¿ã¹ã¦ã¿ãŸã®ã§ã€ãã®æ¦‚è¦ã¨ä½¿ã„方を紹介ã—ã¾ã™ã€‚ eBPF 㯠extended Berkeley Packet Filter ã®ç•¥ã§ã€ã–ã£ãり言ã†ã¨ã€ãƒ¦ãƒ¼ã‚¶ç©ºé–“ã§ä½œæˆã—ãŸãƒ—ãƒã‚°ãƒ©ãƒ をカーãƒãƒ«ã«é€ã‚Šè¾¼ã‚“ã§ã€ç‹¬è‡ªã®å‘½ä»¤ã‚»ãƒƒãƒˆ ã‚’æŒã¤ã‚«ãƒ¼ãƒãƒ«å†…部ã®ä»®æƒ³ãƒžã‚·ãƒ³(以下VM)上ã§å®Ÿè¡Œã§ãる機能ã§ã™ã€‚åå‰ã®é€šã‚Šã€eBPF 㯠BPF(Berkeley Packet Filter)ã¨å‘¼ã°ã‚Œã‚‹å¤ãã‹ã‚‰ã‚るパケットフィルタã®æŠ€è¡“ã‚’æ‹¡å¼µã—ãŸã‚‚ã®ã§ã€ãƒ‘ケットフィルタã«é™ã‚‰ãš OS 用途一般ã«ä½¿ãˆã‚‹ã‚ˆã†ã«ãªã£ã¦ã„ã¾ã™ã€‚ システムã«å±é™ºã‚’åŠã¼ã™å¯èƒ½æ€§ã®ã‚るコードã¯ã€äº‹å‰ã®ãƒã‚§ãƒƒã‚¯ã§æ¤œå‡º
OSSã¸ã®è²¢çŒ®ãƒŽã‚¦ãƒã‚¦ - Cybozu Inside Out | サイボウズエンジニアã®ãƒ–ãƒã‚°
ã¯ã˜ã‚ã« ã“ã‚“ã«ã¡ã¯ã€Necoプãƒã‚¸ã‚§ã‚¯ãƒˆã®satã¨ç”³ã—ã¾ã™ã€‚本記事ã¯ä¸–é–“ã§ä½•ã‹ã¨é‡è¦ã¨ã„ã‚ã‚Œã¤ã¤ã‚‚ãªãœé‡è¦ãªã®ã‹ãŒã‚ã‹ã‚Šã«ããã€ã‹ã¤ã€åºƒãã‚„ã‚Šã‹ãŸãŒçŸ¥ã‚‰ã‚Œã¦ã„ãªã„OSSã¸ã®è²¢çŒ®ãƒŽã‚¦ãƒã‚¦ã«ã¤ã„ã¦è¿°ã¹ã¾ã™ã€‚本記事ã¯ç†è€…ãŒéŽåŽ»ã«ã¯Linuxカーãƒãƒ«ã€ç¾åœ¨ã§ã¯Rookã¨ã„ã†OSSã¸ã®è²¢çŒ®ã«æ¥å‹™ã§å–り組んã§ããŸçµŒé¨“ã«åŸºã¥ã„ã¦æ›¸ãã¾ã—ãŸã€‚ ã²ã¨ãã¡ã«è²¢çŒ®ã¨ã„ã£ã¦ã‚‚様々ãªæ–¹æ³•ãŒã‚ã‚Šã¾ã™ãŒã€ã“ã“ã§ã¯issue発行やPR発行ãªã©ã®OSSã®é–‹ç™ºã¸é–‹ç™ºè€…ãŒç›´æŽ¥ã‹ã‹ã‚るよã†ãªè²¢çŒ®ã«ç„¦ç‚¹ã‚’絞りã¾ã™ã€‚ 本記事ã®æƒ³å®šèªè€…ã¯æ¬¡ã®ã‚ˆã†ãªã‹ãŸãŒãŸã§ã™ã€‚ æ¥å‹™ã§Linuxã‚„Kubernetes,MySQLãªã©ã®æœ‰åã©ã“ã‚ã®OSSを使ã£ã¦ã„ã‚‹ ãƒã‚°ã‚„機能ä¸è¶³ã§å›°ã£ã¦ã„ã‚‹ OSSã¸è²¢çŒ®ã—ãŸã“ã¨ãŒãªã„ 貢献ã™ã‚‹å¿…è¦æ€§ãŒãŒã‚ã‹ã‚‰ãªã„ 自分ã§ã¯å¿…è¦æ€§ãŒã‚ã‹ã£ã¦ã„ã‚‹ãŒã€ä¼šç¤¾ã«ã†ã¾ãä¼ãˆã‚‰ã‚Œãªã„ 貢献ã—ãŸã„ã‚‚ã®ã®ã€ã‚„ã‚Šã‹ãŸãŒã‚ã‹ã‚‰ãªã„ è²¢
C言語ã‹ã‚‰0番地ã¸ã‚¢ã‚¯ã‚»ã‚¹ã™ã‚‹æ–¹æ³•ã«ã¤ã„ã¦ã®å€‹äººçš„ã¾ã¨ã‚ - /var/log/hikalium
発端ã¯uchan_nosæ°ã«ã‚ˆã‚‹ã“ã®ãƒ„イートã§ã—ãŸã€‚ C言語ã§ã€æœ¬å½“ã«ãƒ¡ãƒ¢ãƒªã®0番地ã«ãƒ‡ãƒ¼ã‚¿ã‚’書ããŸã„ã¨ãã¯ã©ã†ã™ã‚Šã‚ƒãˆãˆã®ï¼Ÿâ€” ã†ãƒ¼@技術書典8 Day1ã†31 BitNOS (@uchan_nos) 2020å¹´2月12æ—¥ ãã‚Œã«å¯¾ã™ã‚‹ç§ã®ãƒªãƒ—ライ： uint8_t *p = 1; p--; *p = v;— hikalium (@hikalium) 2020å¹´2月12æ—¥ ç§ã¯ã“ã‚Œã§è©±ãŒçµ‚ã‚ã‚‹ã¨æ€ã£ã¦ã„ãŸã®ã ãŒã€ã©ã†ã‚„らãã†ã§ã¯ãªã‹ã£ãŸã‚‰ã—ãã€è‰²ã€…ãªè¦–点ã‹ã‚‰ã®æ„見ãŒåŠ ã‚ã‚ŠãªãŒã‚‰ã€è©±ã¯æ··æ²Œã‚’極ã‚ãŸã®ã§ã—ãŸâ€¦ã€‚ ã¨ã„ã†ã“ã¨ã§ã€ã“ã“ã«ç§ã®ã“ã®ãƒ„イートã«å¯¾ã—ã¦ã®è¦‹è§£ã¨ã‹ã€ã‚ã‹ã£ãŸã“ã¨ã‚’ã¾ã¨ã‚ã¦ãŠã“ã†ã¨æ€ã„ã¾ã™ã€‚ ç§ã®ãƒªãƒ—ライã®èƒŒæ™¯ã«ã¤ã„㦠uchanã•ã‚“ãŒæ±‚ã‚る「0番地ã«ãƒ‡ãƒ¼ã‚¿ã‚’書ããŸã„ã€ã¨ã„ã†èª²é¡Œè¨å®šã‚’ã€ç§ã¯ã“ã®ã‚ˆã†ã«è§£é‡ˆã—ã¾ã—ãŸã€‚ C言語ã«ãŠã„ã¦ã€æ•´æ•°0ã‚’ãƒã‚¤ãƒ³ã‚¿ã«å¤‰æ›ã™ã‚‹ã¨ã€ãã‚Œã¯NULL
マイクãƒã‚½ãƒ•ãƒˆã€ã€ŒWindows Terminalã€æ©Ÿèƒ½ç¢ºå®šç‰ˆãƒªãƒªãƒ¼ã‚¹ã€‚複数タブã€ãƒšã‚¤ãƒ³åˆ†å‰²ã€ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ç”¨ãƒ•ã‚©ãƒ³ãƒˆãªã©ã‚’å«ã‚€ã€4月æ£å¼ãƒªãƒªãƒ¼ã‚¹äºˆå®š
マイクãƒã‚½ãƒ•ãƒˆã€ã€ŒWindows Terminalã€æ©Ÿèƒ½ç¢ºå®šç‰ˆãƒªãƒªãƒ¼ã‚¹ã€‚複数タブã€ãƒšã‚¤ãƒ³åˆ†å‰²ã€ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ç”¨ãƒ•ã‚©ãƒ³ãƒˆãªã©ã‚’å«ã‚€ã€4月æ£å¼ãƒªãƒªãƒ¼ã‚¹äºˆå®š マイクãƒã‚½ãƒ•ãƒˆãŒã‚ªãƒ¼ãƒ—ンソースã¨ã—ã¦é–‹ç™ºä¸ã®ã€ŒWindows Terminalã€ãƒãƒ¼ã‚¸ãƒ§ãƒ³0.9ãŒãƒªãƒªãƒ¼ã‚¹ã•ã‚Œã¾ã—ãŸã€‚今年4月ã«æ£å¼ãƒªãƒªãƒ¼ã‚¹ãŒäºˆå®šã•ã‚Œã¦ãŠã‚Šã€ä»Šå›žãƒªãƒªãƒ¼ã‚¹ã•ã‚ŒãŸãƒãƒ¼ã‚¸ãƒ§ãƒ³0.9ã¯æ£å¼ãƒªãƒªãƒ¼ã‚¹ã«å‘ã‘ã¦æ–°æ©Ÿèƒ½ãŒè¿½åŠ ã•ã‚ŒãŸæœ€å¾Œã®ç‰ˆã¨ãªã‚Šã¾ã™ã€‚ Windows Terminalã¯2019å¹´5月ã«Windows 10ã®æ–°æ©Ÿèƒ½ã¨ã—ã¦ç™ºè¡¨ã•ã‚ŒãŸã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã§ã™ã€‚ タブã«ã‚ˆã£ã¦ã„ãã¤ã§ã‚‚ç”»é¢ã‚’é–‹ãã“ã¨ãŒã§ãã€ãã‚Œãžã‚Œã®ç”»é¢ã§ã‚³ãƒžãƒ³ãƒ‰ãƒ—ãƒãƒ³ãƒ—トやPowerShellã€Windows Subsystem for Linuxã‚„SSH経由ã§ã»ã‹ã®ã‚µãƒ¼ãƒã¸ã®æŽ¥ç¶šãªã©ã€Windows 10上ã§ã®ã™ã¹ã¦ã®ã‚³ãƒžãƒ³ãƒ‰ãƒ©ã‚¤ãƒ³ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ•ã‚§ã‚¤ã‚¹ãŒçµ±åˆå¯èƒ½ã¨ãªã‚Šã¾ã™
WebAssembly Threads ready to try in Chrome 70  | Articles  | web.dev
WebAssembly Threads ready to try in Chrome 70 Stay organized with collections Save and categorize content based on your preferences. WebAssembly (Wasm) enables compilation of code written in C++ and other languages to run on the web. One very useful feature of native applications is the ability to use threads - a primitive for parallel computation. Most C and C++ developers would be familiar with
~sircmpwn/shit - An implementation of git in (almost) pure POSIX shell - sourcehut git
#shit shit == Shell Git This is an implementation of Git using (almost) entirely POSIX shell. Caveats: There are a couple of GNU coreutilsisms, which are marked with "XXX: GNUism" throughout. They have been tested on BusyBox as well. A native zlib implementation is required: zlib Why the fuck would you use this #Status Enough plumbing commands are written to make this write the initial commit with
リリースã€éšœå®³æƒ…å ±ãªã©ã®ã‚µãƒ¼ãƒ“スã®ãŠçŸ¥ã‚‰ã›
最新ã®äººæ°—エントリーã®é…ä¿¡
j次ã®ãƒ–ックマーク
kå‰ã®ãƒ–ックマーク
lã‚ã¨ã§èªã‚€
eコメント一覧を開ã
oページを開ã
AIãŒç”»åƒã‚’高画質化ã™ã‚‹ã‚¢ãƒ—リ「Reminiã€ã§æ‡ã‹ã—ã®ãƒãƒƒãƒˆãƒŸãƒ¼ãƒ ç”»åƒã‚’å†ç”Ÿã—始ã‚る人ãŸã¡
GitHub - massysett/squeather: Haskell interface to SQLite C library
GitHub - kowainik/colourista: ‎ï¸â€ðŸŒˆ Convenient interface for printing colourful messages
GitHub - igrep/denite-mapping: denite.nvim source for key mappings. Partial port of the mapping source of unite.vim
{{#tags}}- {{label}}
{{/tags}}