NAME

getdtablesize — get the file descriptor table size (LEGACY)

SYNOPSIS

#include <unistd.h>

int getdtablesize(void);

DESCRIPTION

The getdtablesize() function is equivalent to getrlimit(3) with the RLIMIT_NOFILE option.

This interface need not be reentrant.

RETURN VALUE

The getdtablesize() function returns the current soft limit as if obtained from a call to getrlimit(3) with the RLIMIT_NOFILE option.

ERRORS

No errors are defined.

EXAMPLES

None.

APPLICATION USAGE

There is no direct relationship between the value returned by getdtablesize() and {OPEN_MAX} defined in <limits.h> .

The getrlimit() function returns a value of type rlim_t. This interface, returning an int, may have problems representing appropriate values in the future. Applications should use the getrlimit() function instead.

FUTURE DIRECTIONS

None.

SEE ALSO

close(3) , getrlimit(3) , open(3) , select(3) , setrlimit(3) , <limits.h> , <unistd.h> .