{"id":1171295,"date":"2023-08-14T10:12:23","date_gmt":"2023-08-14T14:12:23","guid":{"rendered":"https:\/\/www.prime-wow.com\/?p=1171295"},"modified":"2023-08-14T10:12:23","modified_gmt":"2023-08-14T14:12:23","slug":"a-new-futex-api","status":"publish","type":"post","link":"https:\/\/www.prime-wow.com\/?p=1171295","title":{"rendered":"[$] A new futex API"},"content":{"rendered":"<p>The Linux fast user-space mutex (&#8220;futex&#8221;) subsystem debuted with the 2.6.0<br \/>\nkernel; it provides a mechanism that can be used to implement user-space<br \/>\nlocking.  Since futexes avoid calling into the kernel whenever possible,<br \/>\nthey can indeed be fast, especially in the uncontended case.  The API used<br \/>\nto access futexes has never been seen as one of Linux&#8217;s strongest points,<br \/>\nthough, so there has long been a desire to improve it.  <a href=\"https:\/\/lwn.net\/ml\/linux-kernel\/20230807121843.710612856@infradead.org\/\">This patch<br \/>\nseries<\/a> from Peter Zijlstra shows what the future of futexes may look<br \/>\nlike.&#013;<br \/>\n&#013;<br \/>\nSource: LWN.net &#8211; <a href=\"https:\/\/lwn.net\/Articles\/940944\/\" target=\"_blank\" rel=\"noopener\">[$] A new futex API<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Linux fast user-space mutex (&#8220;futex&#8221;) subsystem debuted with the 2.6.0 kernel; it provides a mechanism that can be used to implement user-space locking. Since futexes avoid calling into the kernel whenever possible, they can indeed be fast, especially in &hellip; <a href=\"https:\/\/www.prime-wow.com\/?p=1171295\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[72],"tags":[75],"class_list":["post-1171295","post","type-post","status-publish","format-standard","hentry","category-linux","tag-linux"],"_links":{"self":[{"href":"https:\/\/www.prime-wow.com\/index.php?rest_route=\/wp\/v2\/posts\/1171295","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.prime-wow.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.prime-wow.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.prime-wow.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.prime-wow.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1171295"}],"version-history":[{"count":0,"href":"https:\/\/www.prime-wow.com\/index.php?rest_route=\/wp\/v2\/posts\/1171295\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.prime-wow.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1171295"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.prime-wow.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1171295"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.prime-wow.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1171295"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}