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
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/*
* libev solaris event port backend
*
* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modifica-
* tion, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License ("GPL") version 2 or any later version,
* in which case the provisions of the GPL are applicable instead of
* the above. If you wish to allow the use of your version of this file
* only under the terms of the GPL and not to allow others to use your
* version of this file under the BSD license, indicate your decision
* by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL. If you do not delete the
* provisions above, a recipient may use your version of this file under
* either the BSD or the GPL.
*/
#include <sys/types.h>
#include <sys/time.h>
#include <poll.h>
#include <port.h>
#include <string.h>
#include <errno.h>
void inline_speed
port_associate_and_check (EV_P_ int fd, int ev)
{
if (0 >
port_associate (
backend_fd, PORT_SOURCE_FD, fd,
(ev & EV_READ ? POLLIN : 0)
| (ev & EV_WRITE ? POLLOUT : 0),
0
)
)
{
if (errno == EBADFD)
fd_kill (EV_A_ fd);
else
ev_syserr ("(libev) port_associate");
}
}
static void
port_modify (EV_P_ int fd, int oev, int nev)
{
/* we need to reassociate no matter what, as closes are
* once more silently being discarded.
*/
if (!nev)
{
if (oev)
port_dissociate (backend_fd, PORT_SOURCE_FD, fd);
}
else
port_associate_and_check (EV_A_ fd, nev);
}
static void
port_poll (EV_P_ ev_tstamp timeout)
{
int res, i;
struct timespec ts;
uint_t nget = 1;
EV_SUSPEND_CB;
ts.tv_sec = (time_t)timeout;
ts.tv_nsec = (long)(timeout - (ev_tstamp)ts.tv_sec) * 1e9;
res = port_getn (backend_fd, port_events, port_eventmax, &nget, &ts);
EV_RESUME_CB;
if (res == -1)
{
if (errno != EINTR && errno != ETIME)
ev_syserr ("(libev) port_getn");
return;
}
for (i = 0; i < nget; ++i)
{
if (port_events [i].portev_source == PORT_SOURCE_FD)
{
int fd = port_events [i].portev_object;
fd_event (
EV_A_
fd,
(port_events [i].portev_events & (POLLOUT | POLLERR | POLLHUP) ? EV_WRITE : 0)
| (port_events [i].portev_events & (POLLIN | POLLERR | POLLHUP) ? EV_READ : 0)
);
port_associate_and_check (EV_A_ fd, anfds [fd].events);
}
}
if (expect_false (nget == port_eventmax))
{
ev_free (port_events);
port_eventmax = array_nextsize (sizeof (port_event_t), port_eventmax, port_eventmax + 1);
port_events = (port_event_t *)ev_malloc (sizeof (port_event_t) * port_eventmax);
}
}
int inline_size
port_init (EV_P_ int flags)
{
/* Initalize the kernel queue */
if ((backend_fd = port_create ()) < 0)
return 0;
fcntl (backend_fd, F_SETFD, FD_CLOEXEC); /* not sure if necessary, hopefully doesn't hurt */
backend_fudge = 1e-3; /* needed to compensate for port_getn returning early */
backend_modify = port_modify;
backend_poll = port_poll;
port_eventmax = 64; /* intiial number of events receivable per poll */
port_events = (port_event_t *)ev_malloc (sizeof (port_event_t) * port_eventmax);
return EVBACKEND_PORT;
}
void inline_size
port_destroy (EV_P)
{
ev_free (port_events);
}
void inline_size
port_fork (EV_P)
{
close (backend_fd);
while ((backend_fd = port_create ()) < 0)
ev_syserr ("(libev) port");
fcntl (backend_fd, F_SETFD, FD_CLOEXEC);
/* re-register interest in fds */
fd_rearm_all (EV_A);
}
|
