I looked quickly at the patch, please note that linuxthreads library uses
internally signals 32-34 in a different way to NPTL, I doubt they can be
reused for timers.
That sounds problematic. Only 32 and 33 are reserved for userland. 34 isn't.
Not really, see <bits/signum.h>
#define SIGRTMIN (__libc_current_sigrtmin ())
#define SIGRTMAX (__libc_current_sigrtmax ())
/* These are the hard limits of the kernel. These values should not be
used directly at user level. */
#define __SIGRTMIN 65 /* be in sync with FreeBSD kernel */
#define __SIGRTMAX 126 /* be in sync with FreeBSD kernel */
Otherwise, how about setting PTHREAD_SIGBASE to something higher to
avoid collision?
The other way around: use 35 and higher internally for timers.
Petr
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