Anonymous
syscall of the day: get/setiti(...) 02/07/26(Sat)10:54:10 No.108084144

File: signal-2024-07-07-15-23-53-541.png (118 KB, 1019x1372)

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syscall of the day: get/setitimer Anonymous 02/07/26(Sat)10:54:10 No.108084144

previous: >>108075578

#define __NR_getitimer            36
#define __NR_setitimer            38

https://man7.org/linux/man-pages/man2/setitimer.2.html

these are pretty neat because of their ability to differentiate been real time and virtual time (as well as the user/system split of the virtual time). aside from profiling, though... idk, maybe it's fine? good for timing stuff? i guess it's convenient that it interrupts you with a signal, so you don't have to dedicate a thread to sleeping in a loop or whatever. but getting interrupted in the middle of other stuff could also be annoying. guess it just comes down to the specifics of your use case. anyone here used these for anything other than profiling?

relevant resources:

man man

man syscalls

https://man7.org/linux/man-pages/
https://linux.die.net/man/
https://elixir.bootlin.com/linux/
https://elixir.bootlin.com/musl/
https://elixir.bootlin.com/glibc/