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rpc_dtablesize.c revision 1.4 
      1 /*	$NetBSD: rpc_dtablesize.c,v 1.4 1996/03/29 23:00:54 jtc Exp $	*/
      2 
      3 /*
      4  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
      5  * unrestricted use provided that this legend is included on all tape
      6  * media and as a part of the software program in whole or part.  Users
      7  * may copy or modify Sun RPC without charge, but are not authorized
      8  * to license or distribute it to anyone else except as part of a product or
      9  * program developed by the user.
     10  *
     11  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
     12  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
     13  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
     14  *
     15  * Sun RPC is provided with no support and without any obligation on the
     16  * part of Sun Microsystems, Inc. to assist in its use, correction,
     17  * modification or enhancement.
     18  *
     19  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
     20  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
     21  * OR ANY PART THEREOF.
     22  *
     23  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
     24  * or profits or other special, indirect and consequential damages, even if
     25  * Sun has been advised of the possibility of such damages.
     26  *
     27  * Sun Microsystems, Inc.
     28  * 2550 Garcia Avenue
     29  * Mountain View, California  94043
     30  */
     31 
     32 #if defined(LIBC_SCCS) && !defined(lint)
     33 /*static char *sccsid = "from: @(#)rpc_dtablesize.c 1.2 87/08/11 Copyr 1987 Sun Micro";*/
     34 /*static char *sccsid = "from: @(#)rpc_dtablesize.c	2.1 88/07/29 4.0 RPCSRC";*/
     35 static char *rcsid = "$NetBSD: rpc_dtablesize.c,v 1.4 1996/03/29 23:00:54 jtc Exp $";
     36 #endif
     37 
     38 #include <sys/types.h>
     39 
     40 /*
     41  * Cache the result of getdtablesize(), so we don't have to do an
     42  * expensive system call every time.
     43  */
     44 int
     45 _rpc_dtablesize()
     46 {
     47 	static int size;
     48 
     49 	if (size == 0) {
     50 		size = getdtablesize();
     51 #ifdef FD_SETSIZE
     52 		/* prevent select() from breaking */
     53 		if (size > FD_SETSIZE)
     54 			size = FD_SETSIZE;
     55 #endif
     56 	}
     57 	return (size);
     58 }
     59