../
pthread-offsets.h
pthread_spin_init.c
pthread_spin_lock.S
pthread_spin_trylock.S
pthread_spin_unlock.S
pthreaddef.h
tls.h

What is this ?

This is an online code browser that allows you to browse C/C++ code just like in your IDE, with semantic highlighting and contextual tooltips that show you the usages and cross references.
Open a C or C++ file and try it by hovering over the symbols!
Or take the feature tour.