2 * Copyright (c) 1995, Index Data
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.19 1995-12-05 11:17:30 quinn
8 * Moved some paranthesises around. Sigh.
10 * Revision 1.18 1995/11/13 09:27:41 quinn
11 * Fiddling with the variant stuff.
13 * Revision 1.17 1995/11/07 12:37:44 quinn
14 * Added support for forcing TIMEOUT event.
16 * Revision 1.16 1995/11/01 13:54:56 quinn
19 * Revision 1.15 1995/09/15 14:44:15 quinn
20 * *** empty log message ***
22 * Revision 1.14 1995/08/29 14:44:50 quinn
25 * Revision 1.13 1995/08/29 11:17:56 quinn
26 * Added code to receive close
28 * Revision 1.12 1995/08/29 10:41:18 quinn
31 * Revision 1.11 1995/06/19 12:39:09 quinn
32 * Fixed bug in timeout code. Added BER dumper.
34 * Revision 1.10 1995/06/16 10:31:33 quinn
35 * Added session timeout.
37 * Revision 1.9 1995/06/05 10:53:31 quinn
38 * Added a better SCAN.
40 * Revision 1.8 1995/05/16 08:51:01 quinn
41 * License, documentation, and memory fixes
43 * Revision 1.7 1995/03/27 15:02:01 quinn
44 * Added some includes for better portability
46 * Revision 1.6 1995/03/27 08:34:21 quinn
47 * Added dynamic server functionality.
48 * Released bindings to session.c (is now redundant)
50 * Revision 1.5 1995/03/15 08:37:41 quinn
51 * Now we're pretty much set for nonblocking I/O.
53 * Revision 1.4 1995/03/14 16:59:48 quinn
56 * Revision 1.3 1995/03/14 11:30:14 quinn
59 * Revision 1.2 1995/03/14 10:27:59 quinn
60 * More work on demo server.
62 * Revision 1.1 1995/03/10 18:22:44 quinn
63 * The rudiments of an asynchronous server.
70 #include <sys/types.h>
76 #include <sys/select.h>
83 static IOCHAN iochans = 0;
85 IOCHAN iochan_getchan(void)
90 IOCHAN iochan_create(int fd, IOC_CALLBACK cb, int flags)
94 if (!(new = xmalloc(sizeof(*new))))
101 new->force_event = 0;
102 new->last_event = new->max_idle = 0;
109 do /* loop as long as there are active associations to process */
112 fd_set in, out, except;
114 static struct timeval nullto = {0, 0}, to;
115 struct timeval *timeout;
120 timeout = &to; /* hang on select */
124 for (p = iochans; p; p = p->next)
127 timeout = &nullto; /* polling select */
128 if (p->flags & EVENT_INPUT)
130 if (p->flags & EVENT_OUTPUT)
132 if (p->flags & EVENT_EXCEPT)
133 FD_SET(p->fd, &except);
137 if ((res = select(max + 1, &in, &out, &except, timeout)) < 0)
143 for (p = iochans; p; p = p->next)
145 int force_event = p->force_event;
146 time_t now = time(0);
149 if (FD_ISSET(p->fd, &in) || force_event == EVENT_INPUT)
152 (*p->fun)(p, EVENT_INPUT);
154 if (!p->destroyed && (FD_ISSET(p->fd, &out) ||
155 force_event == EVENT_OUTPUT))
158 (*p->fun)(p, EVENT_OUTPUT);
160 if (!p->destroyed && (FD_ISSET(p->fd, &except) ||
161 force_event == EVENT_EXCEPT))
164 (*p->fun)(p, EVENT_EXCEPT);
166 if (!p->destroyed && ((p->max_idle && now - p->last_event >
167 p->max_idle) || force_event == EVENT_TIMEOUT))
170 (*p->fun)(p, EVENT_TIMEOUT);
173 for (p = iochans; p; p = nextp)
185 for (pr = iochans; pr; pr = pr->next)
188 assert(pr); /* grave error if it weren't there */