| 1 | /* |
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| 2 | * poller_select.c: select() polling mechanis, |
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| 3 | * |
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| 4 | * Copyright 2002 the Ithildin Project. |
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| 5 | * See the COPYING file for more information on licensing and use. |
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| 6 | */ |
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| 7 | |
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| 8 | IDSTRING(poller_rcsid, "$Id$"); |
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| 9 | |
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| 10 | int poll_sockets(time_t timeout) { |
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| 11 | fd_set rfds, wfds; |
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| 12 | struct timeval tv = {timeout, 0}; /* sleep at most 50ms */ |
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| 13 | struct isocket *sp; |
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| 14 | int ret; |
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| 15 | |
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| 16 | memcpy(&rfds, &select_rfds, sizeof(fd_set)); |
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| 17 | memcpy(&wfds, &select_wfds, sizeof(fd_set)); |
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| 18 | |
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| 19 | if ((ret = select(maxsockets, &rfds, &wfds, NULL, |
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| 20 | (timeout ? &tv : NULL))) == -1 && errno != EINTR) { |
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| 21 | log_error("select(%d, %p, %p, NULL, %p) error: %s", maxsockets, &rfds, |
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| 22 | &wfds, &tv, strerror(errno)); |
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| 23 | return 0; |
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| 24 | } else if (ret <= 0) |
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| 25 | return 1; /* nothing to do, but nothing wrong */ |
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| 26 | |
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| 27 | me.now = time(NULL); |
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| 28 | LIST_FOREACH(sp, &allsockets, intlp) { |
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| 29 | if (SOCKET_DEAD(sp) || sp->fd < 0) |
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| 30 | continue; /* dead socket. */ |
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| 31 | if (FD_ISSET(sp->fd, &rfds)) |
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| 32 | sp->state |= SOCKET_FL_READ_PENDING; |
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| 33 | if (FD_ISSET(sp->fd, &wfds)) { |
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| 34 | sp->state |= SOCKET_FL_WRITE_PENDING; |
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| 35 | socket_unmonitor(sp, SOCKET_FL_WRITE); |
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| 36 | } |
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| 37 | if (sp->state & SOCKET_FL_PENDING) |
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| 38 | socket_event(sp); |
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| 39 | } |
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| 40 | |
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| 41 | return 1; |
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| 42 | } |
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| 43 | /* vi:set ts=8 sts=4 sw=4 tw=76 et: */ |
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