Name
getdtablesize — get descriptor table size
Synopsis
#include <unistd.h>
int
getdtablesize( |
void) ; |
|
DESCRIPTION
getdtablesize
() returns the
maximum number of files a process can have open, one more
than the largest possible value for a file descriptor.
RETURN VALUE
The current limit on the number of open files per
process.
NOTES
getdtablesize
() is
implemented as a libc library function. The glibc version
calls getrlimit(2) and returns
the current RLIMIT_NOFILE
limit, or OPEN_MAX
when that
fails. The libc4 and libc5 versions return OPEN_MAX
(set to 256 since Linux
0.98.4).
CONFORMING TO
SVr4, 4.4BSD (the getdtablesize
() function first appeared in
4.2BSD). It is not specified in POSIX.1-2001; portable
applications should employ sysconf(_SC_OPEN_MAX)
instead
of this call.
SEE ALSO
close(2), dup(2), getrlimit(2), open(2)
Copyright 1993 Rickard E. Faith (faith@cs.unc.edu)
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Modified 2002-04-15 by Roger Luethi <rl@hellgate.ch> and aeb
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