blob: 1545f788bd48edf706b721c88435e3c3d71abbe5 (
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
|
/* interrupt_operation
Copyright (C) 1995, 1996 Free Software Foundation, Inc.
Written by Miles Bader <miles@gnu.ai.mit.edu>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2, or (at
your option) any later version.
This program 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "ports.h"
#include "interrupt_S.h"
/* Cause a pending request on this object to immediately return. The
exact semantics are dependent on the specific object. */
kern_return_t
ports_S_interrupt_operation (mach_port_t port,
mach_port_seqno_t seqno)
{
struct port_info *pi = ports_lookup_port (0, port, 0);
if (!pi)
return EOPNOTSUPP;
mutex_lock (&_ports_lock);
if (pi->cancel_threshold < seqno)
pi->cancel_threshold = seqno;
mutex_unlock (&_ports_lock);
ports_interrupt_rpcs (pi);
ports_port_deref (pi);
return 0;
}
|
