Re: [OT] PIDs for Linux threads (was Re: pid ranges)

On Mon, 07 Oct 2024 18:29:00 +0200, Janis Papanagnou wrote:

[ This is getting off-topic, sorry. ]
 
On 07.10.2024 15:31, Richard Kettlewell wrote:

 
_On Linux_ process IDs and thread IDs share the same number space which
changes the picture quite a bit: [...]

 
This is interesting.
Since processes are handled by the OS kernel what does that imply...?
A common process/thread interface in Linux?

Exactly.
In the early 2000's, the Linux kernel moved to supporting 1:1 threads,
and provided the NPTL ("Native Posix Threading Library") to provide the
POSIX application-level API to this new kernel capability.

Is that defined by POSIX threads, or is it something specific?

It is how Linux implements the kernel-level responsibilities of POSIX
threads.

Is there any good link to read more about that?

Plenty. Google "NPTL and Linux"

(My thread times have long passed; I used it from C++, and there were
a lot of things to consider when programming with threads back then.)
 
Janis

--
Lew Pitcher
"In Skills We Trust"