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
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
/* ---------------------------------------------------------------- */
/* A port bucket to handle SOCK_USERs and ADDRs. */
static struct port_bucket *sock_port_bucket;
/* True if there are threads servicing sock requests. */
static int sock_server_active = 0;
static spin_lock_t sock_server_active_lock = SPIN_LOCK_INITIALIZER;
/* A demuxer for socket operations. */
static int
sock_demuxer (mach_msg_header_t *inp, mach_msg_header_t *outp)
{
extern int socket_server (mach_msg_header_t *inp, mach_msg_header_t *outp);
extern int io_server (mach_msg_header_t *inp, mach_msg_header_t *outp);
extern int interrupt_server (mach_msg_header_t *, mach_msg_header_t *);
extern int notify_server (mach_msg_header_t *, mach_msg_header_t *);
return
socket_server (inp, outp)
|| io_server (inp, outp)
|| interrupt_server (inp, outp)
|| notify_server (inp, outp);
}
/* Handle socket requests while there are sockets around. */
static void
handle_sock_requests ()
{
while (ports_count_bucket (sock_port_bucket) > 0)
{
ports_enable_bucket (sock_port_bucket);
ports_manage_port_operations_multithread (sock_port_bucket, sock_demuxer,
30*1000, 2*60*1000,
1, MACH_PORT_NULL);
}
/* The last service thread is about to exist; make this known. */
spin_lock (&sock_server_active_lock);
sock_server_active = 0;
spin_unlock (&sock_server_active_lock);
/* Let the whole joke start once again. */
ports_enable_bucket (sock_port_bucket);
}
/* Makes sure there are some request threads for sock operations, and starts
a server if necessary. This routine should be called *after* creating the
port(s) which need server, as the server routine only operates while there
are any ports. */
static void
ensure_sock_server ()
{
spin_lock (&sock_server_active_lock);
if (sock_server_active)
spin_unlock (&sock_server_active_lock);
else
{
sock_server_active = 1;
spin_unlock (&sock_server_active_lock);
cthread_detach (cthread_fork ((cthread_fn_t)handle_sock_requests,
(any_t)0));
}
}
/* ---------------------------------------------------------------- */
/* Notify stubs. */
error_t
do_mach_notify_no_senders (mach_port_t port, mach_port_mscount_t count)
{
void *pi = ports_lookup_port (sock_port_bucket, port, 0);
debug (pi, "count: %ul", count);
if (!pi)
return EOPNOTSUPP;
ports_no_senders (pi, count);
ports_port_deref (pi);
return 0;
}
error_t
do_mach_notify_port_deleted (mach_port_t notify, mach_port_t name)
{
return 0;
}
error_t
do_mach_notify_msg_accepted (mach_port_t notify, mach_port_t name)
{
return 0;
}
error_t
do_mach_notify_port_destroyed (mach_port_t notify, mach_port_t name)
{
return 0;
}
error_t
do_mach_notify_send_once (mach_port_t notify)
{
return 0;
}
error_t
do_mach_notify_dead_name (mach_port_t notify, mach_port_t deadport)
{
return 0;
}
|