/* TID of the helper thread. */
-extern __lwpid_t __helper_tid attribute_hidden;
+extern pid_t __helper_tid attribute_hidden;
(in kernel-posix-timers.h and timer_routines.c)
lwpid_t happens to match pid_t but AFAICT they're supposed to be
different things. Nothing prevents upstream from eventually diverging
them:
sys/sys/_types.h:typedef __int32_t __lwpid_t; /* Thread
ID (a.k.a. LWP) */
sys/sys/_types.h:typedef __int32_t __pid_t; /*
process [group] */
In theory yes, but in practice, both pid and tid are limited
to range 1 .. (2^30-1) due to other constrains in kernel.
Moreover, even currently the TID value is in some places
(thr_exit, thr_self) passed as long.
See $SVN-glibc-bsd/glibc-ports/fbtl-misc/pid-tid.txt
I choose to sync with NPTL linux version as much as possible.
Petr
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