(Multi-) Threading

[Baker]

[revelator]

gcc itself does not but the debugger gdb does to some degree and then the old apple compilers where it was called fix and continue .
its planned for clang i hear but its a long term solution due to the massive ammount of targets it supports so dont expect a full fledged solution anytime soon.

[Baker]

Nothing useful to say except pthreads is awesome from everything I see.

It's very clean.

[revelator]

easier to work with than windows threads also the winpthreads version is actually just a wrapper around the windows thread stuff.
Only reason the mingw64 people use it is that the g++ c++11 extentions and openmp needs pthreads, having gcc rely on another dll was just a bit much for me to swallow,
so i patched mingw64 with the patchset from TDM to allow linking it statically and be done with it.

but nice to know that it has other uses

[Baker]

[Baker]

[revelator]

nice.

i guess thread sleep would be something nasty to avoid then atleast from examples i seen.

[Baker]

[revelator]

Just seems commented in several sources that thread functions behave badly if they are put on hold,
something about them going out of sync so that it takes a while for things to catch up when resuming.

From the top of my head last time i seen this was in the cygwin core of all places ...

[revelator]

Ok dug up something about it.

It seems when using thread sleep it will block execution even in the main thread so things can pretty easily fuck up,
so if you dont want it to totally grind everything to a halt a non blocking sleep function might be the better alternative.

Ill see if i can find some examples.

[revelator]

[Baker]

[revelator]

mostly in windows threads which are not a lot of fun to toy with xD

in pthreads you use pthread_sigmask to set wait flags but im still reading into it myself, i do hope to have something useable soon though.

[jitspoe]

[revelator]

Good stuff in both archs and aye dont just use threading if something does not perform to well sometimes its just better to optimize your code a bit more for single threading.
IN the end it depends on what you want to do multithreading works well if you have several performance intensive code targets, but can be a pain in the arse to sync up.
Pthreads are easy but its not always a good thing, still its nice to have have but more experience in how things work is allways better.