1 /*
   2  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "runtime/orderAccess.hpp"
  27 #include "runtime/stubRoutines.hpp"
  28 #include "runtime/thread.hpp"
  29 
  30 void OrderAccess::StubRoutines_fence() {
  31   // Use a stub if it exists.  It may not exist during bootstrap so do
  32   // nothing in that case but assert if no fence code exists after threads have been created
  33   void (*func)() = CAST_TO_FN_PTR(void (*)(), StubRoutines::fence_entry());
  34 
  35   if (func != NULL) {
  36     (*func)();
  37     return;
  38   }
  39   assert(Threads::number_of_threads() == 0, "for bootstrap only");
  40 }