Default thread library

nuxrl · 03-06-2007, 08:06 PM

Not sure if this is the right forum to post this question...

When pthread_create() is called from user code, how can I find out which version of the implementation is used, LinuxThreads or NPTL?

If

Code:

$getconf GNU_LIBPTHREAD_VERSION

doesn't print anything, can I assume LinuxThreads is used as the default thread library?

Thank,

-n

studioj · 03-07-2007, 01:57 PM

that command gives a return on both.

Code:

$ getconf GNU_LIBPTHREAD_VERSION
linuxthreads-0.10

Code:

$ getconf GNU_LIBPTHREAD_VERSION
NPTL 2.3.6

like that so i guess you can just parse the output and determine the default.
for now at least most all linux systems use NPTL as default but also have linuxthreads as a fallback unless someone specifically compiles their glibc without linuxthreads or the system is very old and has linuxthreads only.