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 num-
bered 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 interface, returning an int, may have problems representing appropriate val-
ues 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
