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Diffstat (limited to 'nptl/tst-cnd-broadcast.c')
-rw-r--r-- | nptl/tst-cnd-broadcast.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/nptl/tst-cnd-broadcast.c b/nptl/tst-cnd-broadcast.c new file mode 100644 index 0000000000..90d6843154 --- /dev/null +++ b/nptl/tst-cnd-broadcast.c @@ -0,0 +1,83 @@ +/* C11 threads condition broadcast variable tests. + Copyright (C) 2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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 + <http://www.gnu.org/licenses/>. */ + +#include <threads.h> +#include <stdio.h> +#include <unistd.h> + +#include <support/check.h> + +/* Condition variable where child threads will wait. */ +static cnd_t cond; + +/* Mutex to control wait on cond. */ +static mtx_t mutex; + +/* Code executed by each thread. */ +static int +child_wait (void* data) +{ + /* Wait until parent thread sends broadcast here. */ + mtx_lock (&mutex); + cnd_wait (&cond, &mutex); + mtx_unlock (&mutex); + + thrd_exit (thrd_success); +} + +#define N 5 + +static int +do_test (void) +{ + thrd_t ids[N]; + unsigned char i; + + if (cnd_init (&cond) != thrd_success) + FAIL_EXIT1 ("cnd_init failed"); + if (mtx_init (&mutex, mtx_plain) != thrd_success) + FAIL_EXIT1 ("mtx_init failed"); + + /* Create N new threads. */ + for (i = 0; i < N; ++i) + { + if (thrd_create (&ids[i], child_wait, NULL) != thrd_success) + FAIL_EXIT1 ("thrd_create failed"); + } + + /* Wait for other threads to reach their wait func. */ + thrd_sleep (&((struct timespec){.tv_sec = 2}), NULL); + + mtx_lock (&mutex); + if (cnd_broadcast (&cond) != thrd_success) + FAIL_EXIT1 ("cnd_broadcast failed"); + mtx_unlock (&mutex); + + for (i = 0; i < N; ++i) + { + if (thrd_join (ids[i], NULL) != thrd_success) + FAIL_EXIT1 ("thrd_join failed"); + } + + mtx_destroy (&mutex); + cnd_destroy (&cond); + + return 0; +} + +#include <support/test-driver.c> |