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getdtablesize(3c)

Standard C Library Functions                                 getdtablesize(3C)



NAME
       getdtablesize - get the file descriptor table size

SYNOPSIS
       #include <unistd.h>

       int getdtablesize(void);

DESCRIPTION
       The  getdtablesize()  function  is  equivalent to getrlimit(2) with the
       RLIMIT_NOFILE option.

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

ERRORS
       No errors are defined.

USAGE
       There  is  no direct relationship between the value returned by getdta‐
       blesize() and OPEN_MAX defined in <limits.h>.


       Each process has a file 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 getdtablesize() function returns  the
       current maximum size of this table by calling the getrlimit() function.

SEE ALSO
       close(2), getrlimit(2), open(2), setrlimit(2), select(3C)



Oracle Solaris 11.4               1 Mar 1996                 getdtablesize(3C)
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