By Sean Eric Fagan

Dr. Dobb's Journal September 1998

(a)
ioctl(fd, PIOCWAIT, &procfs_status);
(b)
/* Copy because select modifies it */
ifds = process_fds; 
select(maxfd+1, &ifds, NULL, NULL, NULL);

Example 4: How truss checks for a stopped process: (a) Old version, using ioctl; (b) new version, using select.

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