May 2015

Subtle signal-delivery behavior on OS X (and some other BSD systems)

An online article discussed a subtle behavior on OS X, NetBSD, and OpenBSD delivering the SIGPROF signal to multithreaded programs: http://research.swtch.com/macpprof. In a nutshell, the current implementations in…

If the Photos app for Mac stuck on “Updating”…

If you have enabled iCloud Photo Library, and just restored your whole system from a Time-Machine backup, you would very likely see your Photos app keeps showing “Updating”,…