GETDTABLESIZE(3) | Library Functions Manual | GETDTABLESIZE(3) |
getdtablesize
—
#include <unistd.h>
int
getdtablesize
(void);
getdtablesize
function is an equivalent of
sysconf
() with _SC_OPEN_MAX
.
getdtablesize
() function call appeared in
4.2BSD.
Historically, each process had 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
() used to return the size of this
table. It doesn't make much sense these days because the size of the table
is dynamic.
January 5, 2012 | NetBSD 9.2 |