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)
47 if(fd >= FD_SETSIZE) {
48 flog(LOG_ERR, "tried to use more file descriptors than select() can handle: fd %i", fd);
56 bl->to = time(NULL) + to;
76 fd_set rfds, wfds, efds;
77 struct blocker *bl, *nbl;
83 while(blockers != NULL) {
90 for(bl = blockers; bl; bl = bl->n) {
92 FD_SET(bl->fd, &rfds);
94 FD_SET(bl->fd, &wfds);
95 FD_SET(bl->fd, &efds);
98 if((bl->to != 0) && ((timeout == 0) || (timeout > bl->to)))
101 toval.tv_sec = timeout - now;
103 ret = select(maxfd + 1, &rfds, &wfds, &efds, timeout?(&toval):NULL);
106 flog(LOG_CRIT, "ioloop: select errored out: %s", strerror(errno));
107 /* To avoid CPU hogging in case it's bad, which it
113 for(bl = blockers; bl; bl = nbl) {
116 if(FD_ISSET(bl->fd, &rfds))
118 if(FD_ISSET(bl->fd, &wfds))
120 if(FD_ISSET(bl->fd, &efds))
122 if((ev < 0) || (ev & bl->ev))
124 else if((bl->to != 0) && (bl->to <= now))