--- /dev/null
+/*
+ * poll.c
+ * - wrappers for poll(2)
+ */
+/*
+ * This file is part of adns, which is Copyright (C) 1997-1999 Ian Jackson
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <limits.h>
+
+#include "internal.h"
+
+#ifdef HAVE_POLL
+
+int adns_beforepoll(adns_state ads, struct pollfd *fds, int *nfds_io, int *timeout_io,
+ const struct timeval *now) {
+ struct timeval tv_nowbuf, tv_tobuf, *tv_to;
+ int space, found, timeout_ms;
+ struct pollfd fds_tmp[MAX_POLLFDS];
+
+ adns__must_gettimeofday(ads,&now,&tv_nowbuf);
+ if (!now) { *nfds_io= 0; return 0; }
+
+ timeout_ms= *timeout_io;
+ if (timeout_ms == -1) {
+ tv_to= 0;
+ } else {
+ tv_tobuf.tv_sec= timeout_ms / 1000;
+ tv_tobuf.tv_usec= (timeout_ms % 1000)*1000;
+ tv_to= &tv_tobuf;
+ }
+
+ adns__timeouts(ads, 1, &tv_to,&tv_tobuf, *now);
+
+ if (tv_to) {
+ assert(tv_to == &tv_tobuf);
+ timeout_ms= (tv_tobuf.tv_usec+999)/1000;
+ assert(tv_tobuf.tv_sec < (INT_MAX-timeout_ms)/1000);
+ timeout_ms += tv_tobuf.tv_sec*1000;
+ } else {
+ timeout_ms= -1;
+ }
+ *timeout_io= timeout_ms;
+
+ space= *nfds_io;
+ if (space >= MAX_POLLFDS) {
+ found= adns__pollfds(ads,fds);
+ *nfds_io= found;
+ } else {
+ found= adns__pollfds(ads,fds_tmp);
+ *nfds_io= found;
+ if (found < space) return space ? ERANGE : 0;
+ memcpy(fds,fds_tmp,sizeof(struct pollfd)*found);
+ }
+ return 0;
+}
+
+void adns_afterpoll(adns_state ads, const struct pollfd *fds, int nfds,
+ const struct timeval *now) {
+ struct timeval tv_buf;
+
+ adns__must_gettimeofday(ads,&now,&tv_buf);
+ if (!now) return;
+
+ adns__timeouts(ads,1, 0,0, *now);
+ adns__fdevents(ads, fds,nfds, 0,0,0,0, *now,0);
+}
+
+#endif