mirror of https://github.com/diegocr/libnix.git
108 lines
2.2 KiB
C
108 lines
2.2 KiB
C
/* ***** BEGIN LICENSE BLOCK *****
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* Version: APL License
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*
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* Copyright (c) 2009 Diego Casorran <dcasorran@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* ***** END LICENSE BLOCK ***** */
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#include <stdlib.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <poll.h>
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#include <errno.h>
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#include <proto/exec.h>
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#include <proto/socket.h>
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extern void __chkabort(void);
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int poll( struct pollfd *pfds, unsigned int nfds, int timeout )
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{
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unsigned int i;
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int maxfd = -1, ret;
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fd_set rset,wset,xset;
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struct timeval timeout_tv, *tvp = NULL;
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if (timeout >= 0)
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{
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timeout_tv.tv_sec = (timeout / 1000);
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timeout_tv.tv_usec = (timeout % 1000) * 1000;
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tvp = &timeout_tv;
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}
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if(pfds==NULL||nfds<1)
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{
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if(pfds==NULL&&nfds<1&&timeout>=0)
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{
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ret = WaitSelect(0,NULL,NULL,NULL,tvp,NULL);
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__chkabort();
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return(ret);
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}
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errno=EINVAL;
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return -1;
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}
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FD_ZERO (&rset);
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FD_ZERO (&wset);
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FD_ZERO (&xset);
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for (i = 0; i < nfds; i++)
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{
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pfds[i].revents = 0;
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if (pfds[i].events == 0)
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continue;
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if (pfds[i].fd > maxfd)
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maxfd = pfds[i].fd;
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if (pfds[i].events & POLLIN)
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FD_SET (pfds[i].fd, &rset);
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if (pfds[i].events & POLLOUT)
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FD_SET (pfds[i].fd, &wset);
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if (pfds[i].events & POLLERR)
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FD_SET (pfds[i].fd, &xset);
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}
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ret = WaitSelect (maxfd + 1, &rset, &wset, &xset, tvp, NULL);
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__chkabort ( ) ;
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if(ret == -1)
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return ret;
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for (i = 0; i < nfds; i++)
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{
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if (pfds[i].events == 0)
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continue;
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if (FD_ISSET (pfds[i].fd, &rset))
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pfds[i].revents |= POLLIN;
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if (FD_ISSET (pfds[i].fd, &wset))
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pfds[i].revents |= POLLOUT;
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if (FD_ISSET (pfds[i].fd, &xset))
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pfds[i].revents |= POLLERR;
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}
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return ret;
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}
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