getdtablesize(2) BSD System Calls Manual getdtablesize(2)
NAME
getdtablesize -- get descriptor table size
LIBRARY
Standard C Library (libc, -lc)
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.
LEGACY
The getrlimit(2) function returns a value of type rlim_t. This inter-
face, returning an int, may have problems representing appropriate values
in the future. Applications should use the getrlimit(2) function
instead.
SEE ALSO
close(2), dup(2), getrlimit(2), open(2), select(2)
HISTORY
The getdtablesize() function call appeared in 4.2BSD.
BSD June 4, 1993 BSD
Mac OS X 10.9.1 - Generated Sun Jan 5 21:00:17 CST 2014