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/* Check if printf like functions does not disable asynchronous cancellation
mode (BZ#29214).
Copyright (C) 2022 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 <support/check.h>
#include <support/xstdio.h>
#include <support/xthread.h>
#include <sys/syscall.h>
#include <unistd.h>
static pthread_barrier_t b;
static void *
tf (void *arg)
{
int old;
TEST_COMPARE (pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, NULL), 0);
TEST_COMPARE (pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, &old), 0);
TEST_COMPARE (old, PTHREAD_CANCEL_ASYNCHRONOUS);
/* Check if internal lock cleanup routines restore the cancellation type
correctly. */
printf ("...\n");
TEST_COMPARE (pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, &old), 0);
TEST_COMPARE (old, PTHREAD_CANCEL_ASYNCHRONOUS);
xpthread_barrier_wait (&b);
/* Wait indefinitely for cancellation, which only works if asynchronous
cancellation is enabled. */
#ifdef SYS_pause
syscall (SYS_pause);
#elif defined SYS_ppoll || defined SYS_ppoll_time64
# ifndef SYS_ppoll_time64
# define SYS_ppoll_time64 SYS_ppoll
# endif
syscall (SYS_ppoll_time64, NULL, 0, NULL, NULL);
#else
for (;;);
#endif
return 0;
}
static int
do_test (void)
{
xpthread_barrier_init (&b, NULL, 2);
pthread_t th = xpthread_create (NULL, tf, NULL);
xpthread_barrier_wait (&b);
xpthread_cancel (th);
void *status = xpthread_join (th);
TEST_VERIFY (status == PTHREAD_CANCELED);
return 0;
}
/* There is no need to wait full TIMEOUT if asynchronous is not working. */
#define TIMEOUT 3
#include <support/test-driver.c>
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