1 /*
   2  * Copyright (c) 2010, 2014, 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  * JDK-8046026: CompiledFunction.relinkComposableInvoker assert is being hit
  26  * JDK-8044770: crash with jdk9-dev/nashorn during global object initialization from MT test
  27  * JDK-8047770: NPE in deoptimizing recompilation in multithreaded
  28  *
  29  * @test
  30  * @run
  31  */
  32 
  33 (function() {
  34 var n = 1 << 25;
  35 var ThreadLocalRandom = java.util.concurrent.ThreadLocalRandom;
  36 var m = java.util.stream.IntStream.range(0, n)
  37  .parallel() // this is the essence of this test. We must trigger parallel execution
  38  .filter(function() {
  39      var tlr = ThreadLocalRandom.current();
  40 
  41      var x = tlr.nextDouble(-1.0, 1.0);
  42      var y = tlr.nextDouble(-1.0, 1.0);
  43 
  44      return x * x + y * y <= 1.0;
  45  })
  46  .count();
  47 var pi = (4.0 * m) / n;
  48 print(pi.toFixed(2));
  49 })()