1 /* This file is part of Pazpar2.
2 Copyright (C) 2006-2008 Index Data
4 Pazpar2 is free software; you can redistribute it and/or modify it under
5 the terms of the GNU General Public License as published by the Free
6 Software Foundation; either version 2, or (at your option) any later
9 Pazpar2 is distributed in the hope that it will be useful, but WITHOUT ANY
10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 * Based on ParaZ - a simple tool for harvesting performance data for
22 * parallel operations using Z39.50.
23 * Copyright (c) 2000-2004 Index Data ApS
24 * See LICENSE file for details.
28 * Based on revision YAZ' server/eventl.c 1.29.
51 #include <yaz/yconfig.h>
53 #include <yaz/comstack.h>
54 #include <yaz/xmalloc.h>
56 #include <yaz/statserv.h>
58 IOCHAN iochan_create(int fd, IOC_CALLBACK cb, int flags)
62 if (!(new_iochan = (IOCHAN)xmalloc(sizeof(*new_iochan))))
64 new_iochan->destroyed = 0;
66 new_iochan->flags = flags;
68 new_iochan->force_event = 0;
69 new_iochan->last_event = new_iochan->max_idle = 0;
70 new_iochan->next = NULL;
74 int event_loop(IOCHAN *iochans)
76 do /* loop as long as there are active associations to process */
79 fd_set in, out, except;
81 static struct timeval nullto = {0, 0}, to;
82 struct timeval *timeout;
87 timeout = &to; /* hang on select */
91 for (p = *iochans; p; p = p->next)
96 timeout = &nullto; /* polling select */
97 if (p->flags & EVENT_INPUT)
99 if (p->flags & EVENT_OUTPUT)
101 if (p->flags & EVENT_EXCEPT)
102 FD_SET(p->fd, &except);
105 if (p->max_idle && p->max_idle < to.tv_sec)
106 to.tv_sec = p->max_idle;
108 if ((res = select(max + 1, &in, &out, &except, timeout)) < 0)
115 for (p = *iochans; p; p = p->next)
117 int force_event = p->force_event;
118 time_t now = time(0);
121 if (!p->destroyed && ((p->max_idle && now - p->last_event >
122 p->max_idle) || force_event == EVENT_TIMEOUT))
125 (*p->fun)(p, EVENT_TIMEOUT);
129 if (!p->destroyed && (FD_ISSET(p->fd, &in) ||
130 force_event == EVENT_INPUT))
133 (*p->fun)(p, EVENT_INPUT);
135 if (!p->destroyed && (FD_ISSET(p->fd, &out) ||
136 force_event == EVENT_OUTPUT))
139 (*p->fun)(p, EVENT_OUTPUT);
141 if (!p->destroyed && (FD_ISSET(p->fd, &except) ||
142 force_event == EVENT_EXCEPT))
145 (*p->fun)(p, EVENT_EXCEPT);
148 for (p = *iochans; p; p = nextp)
156 /* Now reset the pointers */
161 for (pr = *iochans; pr; pr = pr->next)
164 assert(pr); /* grave error if it weren't there */
180 * indent-tabs-mode: nil
182 * vim: shiftwidth=4 tabstop=8 expandtab