getdtablehi(3C)

getdtablehi - get largest open file descriptor index

As shipped in IRIX 6.5.5. Unchanged since IRIX 6.5.

NAME
     getdtablehi - get largest open file descriptor index

SYNOPSIS
     #include <unistd.h>

     int getdtablehi(void);

DESCRIPTION
     getdtablehi returns the index of the largest open descriptor for the
     calling process plus one.  The 'plus one' makes getdtablehi an ideal
     replacement for getdtablesize(2) when the program wishes simply to loop
     through and act on all open file descriptors, rather than up to the
     system maximum.

SEE ALSO
     close(2), getdtablesize(2), intro(2), open(2), select(2), setrlimit(2)
     dup(3C).