summaryrefslogtreecommitdiff
path: root/sysdeps/mach/hurd/htl/pt-docancel.c
blob: 93961060a2e5f05da63b140163f5638ac42d5ec6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
/* Cancel a thread.
   Copyright (C) 2002-2020 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 <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;

      err = __thread_suspend (p->kernel_thread);
      assert_perror (err);

      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);
    }

  return 0;
}