diff options
author | Austin Foxley <austinf@cetoncorp.com> | 2009-10-17 12:39:06 -0700 |
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committer | Austin Foxley <austinf@cetoncorp.com> | 2009-10-17 12:39:06 -0700 |
commit | 75accc3bc3c164ac6063c384c98f0dfa7d489dcc (patch) | |
tree | a17543fc0ddbfd1478f4b68123bc32f12a31176f /test/nptl/tst-rwlock8.c | |
parent | a319d590551ff74bbc4de51243e2d5f20ac4c7fd (diff) |
test/nptl/: tests for NPTL
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
Diffstat (limited to 'test/nptl/tst-rwlock8.c')
-rw-r--r-- | test/nptl/tst-rwlock8.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/test/nptl/tst-rwlock8.c b/test/nptl/tst-rwlock8.c new file mode 100644 index 000000000..7eeaea885 --- /dev/null +++ b/test/nptl/tst-rwlock8.c @@ -0,0 +1,164 @@ +/* Test program for timedout read/write lock functions. + Copyright (C) 2000, 2003 Free Software Foundation, Inc. + Contributed by Ulrich Drepper <drepper@redhat.com>, 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 <errno.h> +#include <error.h> +#include <pthread.h> +#include <stdio.h> +#include <stdlib.h> +#include <time.h> +#include <unistd.h> + + +#define NWRITERS 15 +#define WRITETRIES 10 +#define NREADERS 15 +#define READTRIES 15 + +#define DELAY 1000000 + +#ifndef INIT +# define INIT PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP +#endif + +static pthread_rwlock_t lock = INIT; + + +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 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" |