/g/ - syscall of the day: rt_sigtimedwait - Technology

Anonymous

syscall of the day: rt_sigtime(...) 03/30/26(Mon)08:47:17 No.108485406

File: IMG_4053.jpg (943 KB, 1170x1159)

syscall of the day: rt_sigtimedwait Anonymous 03/30/26(Mon)08:47:17 No.108485406 Archived

previous: >>108479107
#define __NR_rt_sigtimedwait    128
https://man7.org/linux/man-pages/man2/sigtimedwait.2.html

tl;dr:
wait for a signal

it's pretty nice that this gives the option to provide a timeout. i am always a little wary about calling functions that perform a blocking wait without the ability to provide a timeout. if even one tiny little thing goes wrong, boom deadlock.
so for that reason, this syscall is decently nice.
it's a bit unfortunate that it can't wait for synchronous signals, but then again, you wouldn't really be waiting for those, anyway. in most cases, i think you're probably better off with signal handlers, but i guess i could see some use cases for this guy. it's just a bit annoying that you have to block the signals in all other threads first. god, that's actually one thing about signals that's always really, really grossed me out: it's totally arbitrary which thread handles a signal. uhh, excuse me? fucking why? well, i know why. it would be marginally less performant to have any sort of sane logic apply, and well we wouldn't want that, now would we, silly? so we as developers are left to work around this, gross hacks be damned

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/

Anonymous
03/30/26(Mon)08:52:30 No.108485423

Anonymous 03/30/26(Mon)08:52:30 No.108485423

What’s wrong with you people?

Anonymous
03/30/26(Mon)08:58:53 No.108485451

Anonymous 03/30/26(Mon)08:58:53 No.108485451

>>108485406
sudo kill yourself

Anonymous
03/30/26(Mon)09:04:25 No.108485472

Anonymous 03/30/26(Mon)09:04:25 No.108485472

doas love syscall anon

Anonymous
03/30/26(Mon)09:05:11 No.108485478

Anonymous 03/30/26(Mon)09:05:11 No.108485478

>>108485472
thank u for being nice ;___;

Anonymous
03/30/26(Mon)10:59:13 No.108486036

Anonymous 03/30/26(Mon)10:59:13 No.108486036

>>108485423
Wtf is syscall? What's the purpose of this thread?

Anonymous
03/30/26(Mon)11:07:45 No.108486079

Anonymous 03/30/26(Mon)11:07:45 No.108486079

>>108485423
>>108485451
>>108485406
Tell me

Anonymous
03/30/26(Mon)11:17:08 No.108486120

Anonymous 03/30/26(Mon)11:17:08 No.108486120

I for one like syscall anon and his threads

Anonymous
03/30/26(Mon)11:18:59 No.108486127

Anonymous 03/30/26(Mon)11:18:59 No.108486127

>>108486120
What's a syscall and why are people hating?

Anonymous
03/30/26(Mon)11:32:41 No.108486199

Anonymous 03/30/26(Mon)11:32:41 No.108486199

>that's actually one thing about signals that's always really, really grossed me out: it's totally arbitrary which thread handles a signal
Yeah, it's fucked. But unix was designed in a world without multithreading.
Anything involving signals is just fucked in general. I try to avoid them

Anonymous
03/30/26(Mon)11:55:18 No.108486364

Anonymous 03/30/26(Mon)11:55:18 No.108486364

>>108486127
>why are people hating?
salty for OP's perky little tits

Anonymous
03/30/26(Mon)12:04:21 No.108486439

Anonymous 03/30/26(Mon)12:04:21 No.108486439

>>108486364
Is it some gooner pdf shit?

Anonymous
03/30/26(Mon)12:19:28 No.108486524

Anonymous 03/30/26(Mon)12:19:28 No.108486524

>>108486439
doubt, OP is in late 20s

Anonymous
03/30/26(Mon)12:23:14 No.108486547

Anonymous 03/30/26(Mon)12:23:14 No.108486547

>grooming thread

Anonymous
03/30/26(Mon)12:35:20 No.108486629

Anonymous 03/30/26(Mon)12:35:20 No.108486629

i kiss you whole body, love from Pakistan

Anonymous
03/30/26(Mon)12:39:26 No.108486655

Anonymous 03/30/26(Mon)12:39:26 No.108486655

>>108485406
cute rape victim

Anonymous
03/30/26(Mon)16:38:09 No.108488202

Anonymous 03/30/26(Mon)16:38:09 No.108488202

>>108486120
i would trade all the AI and pajeettech cellphone mac threads for more random knowledge threads like this.

Anonymous
03/30/26(Mon)17:13:26 No.108488426

Anonymous 03/30/26(Mon)17:13:26 No.108488426

>>108485406
well, signals have been there from the very beginning, whereas threads were sort of bolted on later

Anonymous
03/30/26(Mon)19:53:27 No.108489237

Anonymous 03/30/26(Mon)19:53:27 No.108489237

>>108486120
i'm a girl btw

Anonymous
03/31/26(Tue)01:28:49 No.108490502

Anonymous 03/31/26(Tue)01:28:49 No.108490502

bampu

Anonymous
03/31/26(Tue)01:29:31 No.108490506

Anonymous 03/31/26(Tue)01:29:31 No.108490506

>>108490502
bumping!!!!!

Anonymous
03/31/26(Tue)03:19:15 No.108490933

Anonymous 03/31/26(Tue)03:19:15 No.108490933

>>108485406
The girl in the OP image is pleasant, but the caption gives off major tranny vibes.

Anonymous
03/31/26(Tue)08:55:50 No.108492289

Anonymous 03/31/26(Tue)08:55:50 No.108492289

>>108485406
can't wait till we get to rseq

Anonymous
03/31/26(Tue)09:06:14 No.108492344

Anonymous 03/31/26(Tue)09:06:14 No.108492344

>>108490933
you're not gonna believe this