sunrpc/rpc_dtable.c

   1 /* @(#)rpc_dtablesize.c 2.1 88/07/29 4.0 RPCSRC */
   2 /*
   3  * Redistribution and use in source and binary forms, with or without
   4  * modification, are permitted provided that the following conditions are
   5  * met:
   6  *
   7  *     * Redistributions of source code must retain the above copyright
   8  *       notice, this list of conditions and the following disclaimer.
   9  *     * Redistributions in binary form must reproduce the above
  10  *       copyright notice, this list of conditions and the following
  11  *       disclaimer in the documentation and/or other materials
  12  *       provided with the distribution.
  13  *     * Neither the name of Sun Microsystems, Inc. nor the names of its
  14  *       contributors may be used to endorse or promote products derived
  15  *       from this software without specific prior written permission.
  16  *
  17  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  18  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  19  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  20  *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  21  *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  22  *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  24  *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  25  *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  26  *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  27  *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include <unistd.h>
  32 #include <rpc/clnt.h>
  33
  34 /*
  35  * Cache the result of getdtablesize(), so we don't have to do an
  36  * expensive system call every time.
  37  */
  38 int
  39 _rpc_dtablesize (void)
  40 {
  41   static int size;
  42
  43   if (size == 0)
  44     size = __getdtablesize ();
  45
  46   return size;
  47 }
  48 libc_hidden_def (_rpc_dtablesize)