On 10 Feb 2003, Florin Malita wrote:
> TIP: Se poate face blocking read cu timeout - bagi un select inainte de
> read:
>
> ssize_t read_tout(int fd, void *buf, size_t count, int tout_sec){
> fd_set rd_set;
> struct timeval tv;
> int res;
>
> FD_ZERO(&rd_set);
> FD_SET(fd, &rd_set);
>
> tv.tv_sec = tout_sec;
> tv.tv_usec = 0;
>
> /* blocking cel mult tout_sec */
> if((res = select(fd + 1, &rd_set, NULL, NULL, &tv)) <= 0){
> /* error or timeout */
> return res;
> }
>
Dar nu avem aici a race condition ?
Teoretic intre select si read se poate intampla ceva ca read-ul sa se
blocheze. So O_NONBLOCK ramane de baza (chiar daca faci select() inainte)
> /* acum read nu mai e blocking */
> return read(sock, buf, count);
> }
>
>
> spor
>
> --
> Florin Malita web: http://www.malinux.net
> public key: http://www.malinux.net/data/fmalita.gpg
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