2 * Copyright (c) 1995, Index Data
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.12 1995-08-29 10:41:18 quinn
10 * Revision 1.11 1995/06/19 12:39:09 quinn
11 * Fixed bug in timeout code. Added BER dumper.
13 * Revision 1.10 1995/06/16 10:31:33 quinn
14 * Added session timeout.
16 * Revision 1.9 1995/06/05 10:53:31 quinn
17 * Added a better SCAN.
19 * Revision 1.8 1995/05/16 08:51:01 quinn
20 * License, documentation, and memory fixes
22 * Revision 1.7 1995/03/27 15:02:01 quinn
23 * Added some includes for better portability
25 * Revision 1.6 1995/03/27 08:34:21 quinn
26 * Added dynamic server functionality.
27 * Released bindings to session.c (is now redundant)
29 * Revision 1.5 1995/03/15 08:37:41 quinn
30 * Now we're pretty much set for nonblocking I/O.
32 * Revision 1.4 1995/03/14 16:59:48 quinn
35 * Revision 1.3 1995/03/14 11:30:14 quinn
38 * Revision 1.2 1995/03/14 10:27:59 quinn
39 * More work on demo server.
41 * Revision 1.1 1995/03/10 18:22:44 quinn
42 * The rudiments of an asynchronous server.
48 #include <sys/types.h>
54 #include <sys/select.h>
61 static IOCHAN iochans = 0;
63 IOCHAN iochan_getchan(void)
68 IOCHAN iochan_create(int fd, IOC_CALLBACK cb, int flags)
72 if (!(new = malloc(sizeof(*new))))
80 new->last_event = new->max_idle = 0;
90 fd_set in, out, except;
92 static struct timeval nullto = {0, 0}, to;
93 struct timeval *timeout;
98 timeout = &to; /* hang on select */
102 for (p = iochans; p; p = p->next)
105 timeout = &nullto; /* polling select */
106 if (p->flags & EVENT_INPUT)
108 if (p->flags & EVENT_OUTPUT)
110 if (p->flags & EVENT_EXCEPT)
111 FD_SET(p->fd, &except);
115 if ((res = select(max + 1, &in, &out, &except, timeout)) < 0)
121 for (p = iochans; p; p = p->next)
123 int force_event = p->force_event;
124 time_t now = time(0);
127 if (FD_ISSET(p->fd, &in) || force_event == EVENT_INPUT)
130 (*p->fun)(p, EVENT_INPUT);
132 if (!p->destroyed && (FD_ISSET(p->fd, &out) ||
133 force_event == EVENT_OUTPUT))
136 (*p->fun)(p, EVENT_OUTPUT);
138 if (!p->destroyed && (FD_ISSET(p->fd, &except) ||
139 force_event == EVENT_EXCEPT))
142 (*p->fun)(p, EVENT_EXCEPT);
144 if (!p->destroyed && p->max_idle && now - p->last_event >
148 (*p->fun)(p, EVENT_TIMEOUT);
151 for (p = iochans; p; p = nextp)
163 for (pr = iochans; pr; pr = pr->next)
166 assert(pr); /* grave error if it weren't there */