2 * Copyright (C) 1994, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.4 1995-03-14 16:59:48 quinn
10 * Revision 1.3 1995/03/14 11:30:14 quinn
13 * Revision 1.2 1995/03/14 10:27:59 quinn
14 * More work on demo server.
16 * Revision 1.1 1995/03/10 18:22:44 quinn
17 * The rudiments of an asynchronous server.
23 #include <sys/types.h>
31 IOCHAN iochan_create(int fd, IOC_CALLBACK cb, int flags)
35 if (!(new = malloc(sizeof(*new))))
52 fd_set in, out, except;
54 static struct timeval nullto = {0, 0};
55 struct timeval *timeout;
60 timeout = 0; /* hang on select */
62 for (p = iochans; p; p = p->next)
66 if (p->flags & EVENT_INPUT)
68 if (p->flags & EVENT_OUTPUT)
70 if (p->flags & EVENT_EXCEPT)
71 FD_SET(p->fd, &except);
75 if ((res = select(max + 1, &in, &out, &except, timeout)) < 0)
83 for (p = iochans; p; p = nextp)
85 int force_event = p->force_event;
89 if (FD_ISSET(p->fd, &in) || force_event == EVENT_INPUT)
90 (*p->fun)(p, EVENT_INPUT);
91 if (!p->destroyed && (FD_ISSET(p->fd, &in) ||
92 force_event == EVENT_OUTPUT))
93 (*p->fun)(p, EVENT_OUTPUT);
94 if (!p->destroyed && (FD_ISSET(p->fd, &except) ||
95 force_event == EVENT_EXCEPT))
96 (*p->fun)(p, EVENT_EXCEPT);
105 for (pr = iochans; pr; pr = pr->next)