1 /*
   2  * Copyright (c) 2015, 2017, 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 #ifndef SHARE_GC_Z_ZFUTURE_INLINE_HPP
  25 #define SHARE_GC_Z_ZFUTURE_INLINE_HPP
  26 
  27 #include "gc/z/zFuture.hpp"
  28 #include "runtime/interfaceSupport.inline.hpp"
  29 #include "runtime/semaphore.inline.hpp"
  30 #include "runtime/thread.hpp"
  31 
  32 template <typename T>
  33 inline void ZFuture<T>::set(T value) {
  34   // Set value
  35   _value = value;
  36 
  37   // Notify waiter
  38   _sema.signal();
  39 }
  40 
  41 template <typename T>
  42 inline T ZFuture<T>::get() {
  43   // Wait for notification
  44   Thread* const thread = Thread::current();
  45   if (thread->is_Java_thread()) {
  46     _sema.wait_with_safepoint_check((JavaThread*)thread);
  47   } else {
  48     _sema.wait();
  49   }
  50 
  51   // Return value
  52   return _value;
  53 }
  54 
  55 #endif // SHARE_GC_Z_ZFUTURE_INLINE_HPP