From 697568d1b48a497024bca234483a157cee79c7a2 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 21 Jun 2000 04:35:29 +0000 Subject: Update. 2000-06-20 Jes Sorensen * sysdeps/unix/sysv/linux/ia64/syscalls.list: New file. 2000-06-20 Jes Sorensen * sysdeps/unix/sysv/linux/ia64/machine-gmon.h: New file. * sysdeps/unix/sysv/linux/ia64/profil-counter.h: New file. 2000-06-20 David Mosberger-Tang * sysdeps/unix/sysv/linux/ia64/getpagesize.c: New file. 2000-06-20 Jes Sorensen * sysdeps/unix/sysv/linux/ia64/sys/ucontext.h: Fix typo. --- linuxthreads/Examples/ex9.c | 94 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 94 insertions(+) create mode 100644 linuxthreads/Examples/ex9.c (limited to 'linuxthreads/Examples') diff --git a/linuxthreads/Examples/ex9.c b/linuxthreads/Examples/ex9.c new file mode 100644 index 0000000000..0c08741003 --- /dev/null +++ b/linuxthreads/Examples/ex9.c @@ -0,0 +1,94 @@ +/* Tests for pthread_barrier_* functions. + Copyright (C) 2000 Free Software Foundation, Inc. + Contributed by Kaz Kylheku , 2000. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include +#include +#include +#include +#include + +#define NUM_THREADS 10 +#define NUM_ITERS 500 + +static void *thread (void *); +static pthread_barrier_t barrier; + +int +main (void) +{ + pthread_t th; + int i; + + if (pthread_barrier_init (&barrier, NULL, NUM_THREADS + 1) != 0) + error (EXIT_FAILURE, 0, "cannot initialize barrier"); + + for (i = 0; i < NUM_THREADS; i++) + { + if (pthread_create (&th, NULL, thread, NULL) != 0) + error (EXIT_FAILURE, 0, "cannot create thread"); + } + + (void) thread (NULL); + /* notreached */ + return 0; +} + + +static void * +thread (void *arg) +{ + int i; + pthread_t self = pthread_self (); + static pthread_t last_serial_thread; + static int linecount; /* protected by flockfile(stdout) */ + + for (i = 0; i < NUM_ITERS; i++) + { + switch (pthread_barrier_wait (&barrier)) + { + case 0: + flockfile (stdout); + printf ("%04d: non-serial thread %lu\n", ++linecount, + (unsigned long) self); + funlockfile (stdout); + break; + case PTHREAD_BARRIER_SERIAL_THREAD: + flockfile (stdout); + printf ("%04d: serial thread %lu\n", ++linecount, + (unsigned long) self); + funlockfile (stdout); + last_serial_thread = self; + break; + default: + /* Huh? */ + error (EXIT_FAILURE, 0, "unexpected return value from barrier wait"); + } + } + + if (pthread_equal (self, last_serial_thread)) + { + flockfile (stdout); + printf ("%04d: last serial thread %lu terminating process\n", + ++linecount, (unsigned long) self); + funlockfile (stdout); + exit (0); + } + + pthread_exit(NULL); +} -- cgit 1.4.1