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/* Cancel a thread.
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 <pthread.h>
#include <hurd/signal.h>
#include <pt-internal.h>
#include <pthreadP.h>
static void
call_exit (void)
{
__pthread_exit (0);
}
int
__pthread_do_cancel (struct __pthread *p)
{
mach_port_t ktid;
int me;
assert (p->cancel_pending == 1);
assert (p->cancel_state == PTHREAD_CANCEL_ENABLE);
__pthread_mutex_unlock (&p->cancel_lock);
ktid = __mach_thread_self ();
me = p->kernel_thread == ktid;
__mach_port_deallocate (__mach_task_self (), ktid);
if (me)
call_exit ();
else
{
error_t err;
struct hurd_sigstate *ss = _hurd_thread_sigstate (p->kernel_thread);
__spin_lock (&ss->critical_section_lock);
__spin_lock (&ss->lock);
err = __thread_suspend (p->kernel_thread);
assert_perror (err);
__spin_unlock (&ss->lock);
err = __thread_abort (p->kernel_thread);
assert_perror (err);
err = __thread_set_pcsptp (p->kernel_thread,
1, (void *) call_exit, 0, 0, 0, 0);
assert_perror (err);
err = __thread_resume (p->kernel_thread);
assert_perror (err);
_hurd_critical_section_unlock (ss);
}
return 0;
}
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