Yes. Thank you for pointing me out this. I was looking into SIGEV_THREAD with a callback posting a semaphore, but sigtimedwait() seems to be exactly what I'm looking for.
Best regards, Petro On Thu, Dec 2, 2021, 12:20 AM Gregory Nutt <spudan...@gmail.com> wrote: > > Yeah, I used a wrong term when was asking about "callback". Actually I > need > > asynchronous notification, so I can pend a task on some primitive like a > > semaphore. > > > > Semaphore is not a good choice to OS/application signaling due to memory > access issues in some build configurations. And semapores are not easilty > shareable in the case of multiple waiters. > > > > Again, a signal is what you want. Your applications can wait on a signal > primitive for any mount related event to occur. This is the strategy used > everywhere and is intended just for what you are doing. >
