2 * Copyright (c) 1995, Index Data
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.20 1996-02-21 12:52:55 quinn
10 * Revision 1.19 1995/12/05 11:17:30 quinn
11 * Moved some paranthesises around. Sigh.
13 * Revision 1.18 1995/11/13 09:27:41 quinn
14 * Fiddling with the variant stuff.
16 * Revision 1.17 1995/11/07 12:37:44 quinn
17 * Added support for forcing TIMEOUT event.
19 * Revision 1.16 1995/11/01 13:54:56 quinn
22 * Revision 1.15 1995/09/15 14:44:15 quinn
23 * *** empty log message ***
25 * Revision 1.14 1995/08/29 14:44:50 quinn
28 * Revision 1.13 1995/08/29 11:17:56 quinn
29 * Added code to receive close
31 * Revision 1.12 1995/08/29 10:41:18 quinn
34 * Revision 1.11 1995/06/19 12:39:09 quinn
35 * Fixed bug in timeout code. Added BER dumper.
37 * Revision 1.10 1995/06/16 10:31:33 quinn
38 * Added session timeout.
40 * Revision 1.9 1995/06/05 10:53:31 quinn
41 * Added a better SCAN.
43 * Revision 1.8 1995/05/16 08:51:01 quinn
44 * License, documentation, and memory fixes
46 * Revision 1.7 1995/03/27 15:02:01 quinn
47 * Added some includes for better portability
49 * Revision 1.6 1995/03/27 08:34:21 quinn
50 * Added dynamic server functionality.
51 * Released bindings to session.c (is now redundant)
53 * Revision 1.5 1995/03/15 08:37:41 quinn
54 * Now we're pretty much set for nonblocking I/O.
56 * Revision 1.4 1995/03/14 16:59:48 quinn
59 * Revision 1.3 1995/03/14 11:30:14 quinn
62 * Revision 1.2 1995/03/14 10:27:59 quinn
63 * More work on demo server.
65 * Revision 1.1 1995/03/10 18:22:44 quinn
66 * The rudiments of an asynchronous server.
73 #include <sys/types.h>
79 #include <sys/select.h>
86 static IOCHAN iochans = 0;
88 IOCHAN iochan_getchan(void)
93 IOCHAN iochan_create(int fd, IOC_CALLBACK cb, int flags)
97 if (!(new = xmalloc(sizeof(*new))))
104 new->force_event = 0;
105 new->last_event = new->max_idle = 0;
112 do /* loop as long as there are active associations to process */
115 fd_set in, out, except;
117 static struct timeval nullto = {0, 0}, to;
118 struct timeval *timeout;
123 timeout = &to; /* hang on select */
127 for (p = iochans; p; p = p->next)
130 timeout = &nullto; /* polling select */
131 if (p->flags & EVENT_INPUT)
133 if (p->flags & EVENT_OUTPUT)
135 if (p->flags & EVENT_EXCEPT)
136 FD_SET(p->fd, &except);
140 if ((res = select(max + 1, &in, &out, &except, timeout)) < 0)
146 for (p = iochans; p; p = p->next)
148 int force_event = p->force_event;
149 time_t now = time(0);
152 if (!p->destroyed && FD_ISSET(p->fd, &in) || force_event ==
156 (*p->fun)(p, EVENT_INPUT);
158 if (!p->destroyed && (FD_ISSET(p->fd, &out) ||
159 force_event == EVENT_OUTPUT))
162 (*p->fun)(p, EVENT_OUTPUT);
164 if (!p->destroyed && (FD_ISSET(p->fd, &except) ||
165 force_event == EVENT_EXCEPT))
168 (*p->fun)(p, EVENT_EXCEPT);
170 if (!p->destroyed && ((p->max_idle && now - p->last_event >
171 p->max_idle) || force_event == EVENT_TIMEOUT))
174 (*p->fun)(p, EVENT_TIMEOUT);
177 for (p = iochans; p; p = nextp)
189 for (pr = iochans; pr; pr = pr->next)
192 assert(pr); /* grave error if it weren't there */