2 ashd - A Sane HTTP Daemon
3 Copyright (C) 2008 Fredrik Tolf <fredrik@dolda2000.com>
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include <sys/select.h>
32 static struct blocker *blockers;
35 struct blocker *n, *p;
42 int block(int fd, int ev, time_t to)
51 bl->to = time(NULL) + to;
71 fd_set rfds, wfds, efds;
72 struct blocker *bl, *nbl;
78 while(blockers != NULL) {
85 for(bl = blockers; bl; bl = bl->n) {
87 FD_SET(bl->fd, &rfds);
89 FD_SET(bl->fd, &wfds);
90 FD_SET(bl->fd, &efds);
93 if((bl->to != 0) && ((timeout == 0) || (timeout > bl->to)))
96 toval.tv_sec = timeout - now;
98 ret = select(maxfd + 1, &rfds, &wfds, &efds, timeout?(&toval):NULL);
101 flog(LOG_CRIT, "ioloop: select errored out: %s", strerror(errno));
102 /* To avoid CPU hogging in case it's bad, which it
108 for(bl = blockers; bl; bl = nbl) {
111 if(FD_ISSET(bl->fd, &rfds))
113 if(FD_ISSET(bl->fd, &wfds))
115 if(FD_ISSET(bl->fd, &efds))
117 if((ev < 0) || (ev & bl->ev))
119 else if((bl->to != 0) && (bl->to <= now))