From 3724f268b15bdbd322cda97f88a965a68f2fd3ef Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Mon, 24 Feb 2003 08:50:25 +0000 Subject: Update. 2003-02-24 Ulrich Drepper * Makefile (tests): Add tst-rwlock8 and tst-rwlock9. * tst-rwlock8.c: New file. * tst-rwlock9.c: New file. * sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S: Fix complete broken rwlock implementation. * sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedrdlock.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedwrlock.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_unlock.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_wrlock.S: Likewise. --- nptl/tst-rwlock8.c | 161 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 161 insertions(+) create mode 100644 nptl/tst-rwlock8.c (limited to 'nptl/tst-rwlock8.c') diff --git a/nptl/tst-rwlock8.c b/nptl/tst-rwlock8.c new file mode 100644 index 0000000000..c280c927ec --- /dev/null +++ b/nptl/tst-rwlock8.c @@ -0,0 +1,161 @@ +/* Test program for timedout read/write lock functions. + Copyright (C) 2000, 2003 Free Software Foundation, Inc. + Contributed by Ulrich Drepper , 2000. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser 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 +#include +#include + + +#define NWRITERS 15 +#define WRITETRIES 10 +#define NREADERS 15 +#define READTRIES 15 + +#define DELAY 1000000 + +static pthread_rwlock_t lock = PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP; + + +static void * +writer_thread (void *nr) +{ + struct timespec delay; + int n; + + delay.tv_sec = 0; + delay.tv_nsec = DELAY; + + for (n = 0; n < WRITETRIES; ++n) + { + printf ("writer thread %ld tries again\n", (long int) nr); + + if (pthread_rwlock_wrlock (&lock) != 0) + { + puts ("wrlock failed"); + exit (1); + } + + printf ("writer thread %ld succeeded\n", (long int) nr); + + nanosleep (&delay, NULL); + + if (pthread_rwlock_unlock (&lock) != 0) + { + puts ("unlock for writer failed"); + exit (1); + } + + printf ("writer thread %ld released\n", (long int) nr); + } + + return NULL; +} + + +static void * +reader_thread (void *nr) +{ + struct timespec ts; + struct timespec delay; + int n; + + delay.tv_sec = 0; + delay.tv_nsec = DELAY; + + for (n = 0; n < READTRIES; ++n) + { + printf ("reader thread %ld tries again\n", (long int) nr); + + if (pthread_rwlock_rdlock (&lock) != 0) + { + puts ("rdlock failed"); + exit (1); + } + + printf ("reader thread %ld succeeded\n", (long int) nr); + + nanosleep (&delay, NULL); + + if (pthread_rwlock_unlock (&lock) != 0) + { + puts ("unlock for reader failed"); + exit (1); + } + + printf ("reader thread %ld released\n", (long int) nr); + } + + return NULL; +} + + +static int +do_test (void) +{ + pthread_t thwr[NWRITERS]; + pthread_t thrd[NREADERS]; + int n; + void *res; + + /* Make standard error the same as standard output. */ + dup2 (1, 2); + + /* Make sure we see all message, even those on stdout. */ + setvbuf (stdout, NULL, _IONBF, 0); + + for (n = 0; n < NWRITERS; ++n) + if (pthread_create (&thwr[n], NULL, writer_thread, + (void *) (long int) n) != 0) + { + puts ("writer create failed"); + exit (1); + } + + for (n = 0; n < NREADERS; ++n) + if (pthread_create (&thrd[n], NULL, reader_thread, + (void *) (long int) n) != 0) + { + puts ("reader create failed"); + exit (1); + } + + /* Wait for all the threads. */ + for (n = 0; n < NWRITERS; ++n) + if (pthread_join (thwr[n], &res) != 0) + { + puts ("writer join failed"); + exit (1); + } + for (n = 0; n < NREADERS; ++n) + if (pthread_join (thrd[n], &res) != 0) + { + puts ("reader join failed"); + exit (1); + } + + return 0; +} + +#define TIMEOUT 30 +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" -- cgit v1.2.3