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/* Copyright (C) 2002-2021 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
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
static void *
tf (void *arg)
{
if (pthread_mutex_lock (&lock) != 0)
{
puts ("child: mutex_lock failed");
return NULL;
}
return (void *) 42l;
}
static int
do_test (void)
{
pthread_t th;
if (pthread_mutex_lock (&lock) != 0)
{
puts ("mutex_lock failed");
exit (1);
}
if (pthread_create (&th, NULL, tf, NULL) != 0)
{
puts ("mutex_create failed");
exit (1);
}
void *status;
int val = pthread_tryjoin_np (th, &status);
if (val == 0)
{
puts ("1st tryjoin succeeded");
exit (1);
}
else if (val != EBUSY)
{
puts ("1st tryjoin didn't return EBUSY");
exit (1);
}
if (pthread_mutex_unlock (&lock) != 0)
{
puts ("mutex_unlock failed");
exit (1);
}
while ((val = pthread_tryjoin_np (th, &status)) != 0)
{
if (val != EBUSY)
{
printf ("tryjoin returned %s (%d), expected only 0 or EBUSY\n",
strerror (val), val);
exit (1);
}
/* Delay minimally. */
struct timespec ts = { .tv_sec = 0, .tv_nsec = 10000000 };
nanosleep (&ts, NULL);
}
if (status != (void *) 42l)
{
printf ("return value %p, expected %p\n", status, (void *) 42l);
exit (1);
}
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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