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author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-02-09 19:17:51 +0000 |
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committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-02-09 19:24:44 +0000 |
commit | d8f1f2d9ab2144b589fdac3e381cd86e71871e43 (patch) | |
tree | 586832da5c77a4635006cfecb4515e23956ddaa6 /sysdeps/pthread/tst-cond18.c | |
parent | faae4b2bdd692d929037c80c3315f716f02f3b00 (diff) | |
download | glibc-d8f1f2d9ab2144b589fdac3e381cd86e71871e43.tar.gz glibc-d8f1f2d9ab2144b589fdac3e381cd86e71871e43.tar.xz glibc-d8f1f2d9ab2144b589fdac3e381cd86e71871e43.zip |
pthread: Move most cond tests from nptl to sysdeps/pthread
So they can be checked with htl too.
Diffstat (limited to 'sysdeps/pthread/tst-cond18.c')
-rw-r--r-- | sysdeps/pthread/tst-cond18.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/sysdeps/pthread/tst-cond18.c b/sysdeps/pthread/tst-cond18.c new file mode 100644 index 0000000000..38c35d7602 --- /dev/null +++ b/sysdeps/pthread/tst-cond18.c @@ -0,0 +1,121 @@ +/* Copyright (C) 2004-2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>, 2004. + + 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; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <limits.h> +#include <fcntl.h> +#include <pthread.h> +#include <stdbool.h> +#include <stdlib.h> +#include <stdio.h> +#include <unistd.h> + +pthread_cond_t cv = PTHREAD_COND_INITIALIZER; +pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; +bool exiting; +int fd, spins, nn; +enum { count = 8 }; /* Number of worker threads. */ + +void * +tf (void *id) +{ + pthread_mutex_lock (&lock); + + if ((long) id == 0) + { + while (!exiting) + { + if ((spins++ % 1000) == 0) + write (fd, ".", 1); + pthread_mutex_unlock (&lock); + + pthread_mutex_lock (&lock); + int njobs = rand () % (count + 1); + nn = njobs; + if ((rand () % 30) == 0) + pthread_cond_broadcast (&cv); + else + while (njobs--) + pthread_cond_signal (&cv); + } + + pthread_cond_broadcast (&cv); + } + else + { + while (!exiting) + { + while (!nn && !exiting) + pthread_cond_wait (&cv, &lock); + --nn; + pthread_mutex_unlock (&lock); + + pthread_mutex_lock (&lock); + } + } + + pthread_mutex_unlock (&lock); + return NULL; +} + +int +do_test (void) +{ + fd = open ("/dev/null", O_WRONLY); + if (fd < 0) + { + printf ("couldn't open /dev/null, %m\n"); + return 1; + } + + pthread_t th[count + 1]; + pthread_attr_t attr; + int i, ret, sz; + pthread_attr_init (&attr); + sz = sysconf (_SC_PAGESIZE); +#ifdef PTHREAD_STACK_MIN + if (sz < PTHREAD_STACK_MIN) + sz = PTHREAD_STACK_MIN; +#endif + pthread_attr_setstacksize (&attr, sz); + + for (i = 0; i <= count; ++i) + if ((ret = pthread_create (&th[i], &attr, tf, (void *) (long) i)) != 0) + { + errno = ret; + printf ("pthread_create %d failed: %m\n", i); + return 1; + } + + struct timespec ts = { .tv_sec = 20, .tv_nsec = 0 }; + while (nanosleep (&ts, &ts) != 0); + + pthread_mutex_lock (&lock); + exiting = true; + pthread_mutex_unlock (&lock); + + for (i = 0; i < count; ++i) + pthread_join (th[i], NULL); + + close (fd); + return 0; +} + +#define TEST_FUNCTION do_test () +#define TIMEOUT 40 +#include "../test-skeleton.c" |