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GETDTABLESIZE(3) Library Functions Manual GETDTABLESIZE(3)

NAME

getdtablesizeget descriptor table size

SYNOPSIS

#include <unistd.h>
int
getdtablesize(void);

DESCRIPTION

Each process has a fixed size descriptor table, which is guaranteed to have at least 20 slots. The entries in the descriptor table are numbered with small integers starting at 0. The call getdtablesize() returns the size of this table.

SEE ALSO

close(2), dup(2), getdtablecount(2), getrlimit(2), open(2), select(2), setrlimit(2), sysconf(3), sysctl(3)

HISTORY

The getdtablesize() function call appeared in 4.2BSD.
December 12, 2014 OpenBSD-5.9