[PATCH] Fix linuxthreads when spawned from programs using NPTL
Jakub Jelinek
jakub@redhat.com
Thu Apr 3 14:03:00 GMT 2003
Hi!
If a linuxthreads programs is spawned from a threaded NPTL program
(such as gnome-terminal, konsole etc.), bad things happen as
since 2003-03-25 NPTL blocks __SIGRTMIN+1, so all LT threads
but the manager (which does SIG_SETMASK at the very end) never receive
__pthread_sig_cancel.
2003-04-03 Jakub Jelinek <jakub@redhat.com>
* pthread.c (pthread_initialize): Unblock __pthread_sig_cancel
in case the parent blocked it.
--- linuxthreads/pthread.c.jj 2003-04-03 07:16:43.000000000 -0500
+++ linuxthreads/pthread.c 2003-04-03 08:38:29.000000000 -0500
@@ -550,6 +550,10 @@ static void pthread_initialize(void)
sigemptyset(&mask);
sigaddset(&mask, __pthread_sig_restart);
sigprocmask(SIG_BLOCK, &mask, NULL);
+ /* And unblock __pthread_sig_cancel if it has been blocked. */
+ sigdelset(&mask, __pthread_sig_restart);
+ sigaddset(&mask, __pthread_sig_cancel);
+ sigprocmask(SIG_UNBLOCK, &mask, NULL);
/* Register an exit function to kill all other threads. */
/* Do it early so that user-registered atexit functions are called
before pthread_*exit_process. */
Jakub
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