1 /*
   2  * Copyright (c) 2015, 2018, 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 
  26 
  27 package org.graalvm.compiler.core.test.deopt;
  28 
  29 import java.util.concurrent.CountDownLatch;
  30 
  31 import org.junit.Assert;
  32 import org.junit.Assume;
  33 import org.junit.Test;
  34 
  35 import org.graalvm.compiler.core.common.GraalOptions;
  36 import org.graalvm.compiler.core.test.GraalCompilerTest;
  37 
  38 import jdk.vm.ci.code.InstalledCode;
  39 
  40 public final class SafepointRethrowDeoptTest extends GraalCompilerTest {
  41 
  42     private static final Object RETURN_VALUE = "1 2 3";
  43     private static final RuntimeException BREAK_EX = new RuntimeException();
  44     private static final RuntimeException CONTINUE_EX = new RuntimeException();
  45     private static volatile int terminate;
  46     private static volatile int entered;
  47 
  48     public static Object execute() {
  49         entered = 1;
  50         for (;;) {
  51             try {
  52                 if (terminate != 0) {
  53                     throw BREAK_EX;
  54                 } else {
  55                     throw CONTINUE_EX;
  56                 }
  57             } catch (RuntimeException e) {
  58                 if (e == BREAK_EX) {
  59                     break;
  60                 } else if (e == CONTINUE_EX) {
  61                     continue;
  62                 }
  63                 throw e;
  64             }
  65         }
  66         return RETURN_VALUE;
  67     }
  68 
  69     @Test
  70     public void test() {
  71         Assume.assumeTrue(GraalOptions.GenLoopSafepoints.getValue(getInitialOptions()));
  72         synchronized (SafepointRethrowDeoptTest.class) {
  73             // needs static fields
  74             terminate = 1;
  75 
  76             InstalledCode installed = getCode(getResolvedJavaMethod("execute"));
  77 
  78             terminate = 0;
  79             entered = 0;
  80             CountDownLatch cdl = new CountDownLatch(1);
  81             Thread t1 = new Thread(() -> {
  82                 try {
  83                     cdl.await();
  84                     while (entered == 0) {
  85                         /* spin */
  86                     }
  87                     installed.invalidate();
  88                 } catch (InterruptedException e) {
  89                     Assert.fail("interrupted");
  90                 } finally {
  91                     terminate = 1;
  92                 }
  93             });
  94             Thread t2 = new Thread(() -> {
  95                 cdl.countDown();
  96                 Object result;
  97                 try {
  98                     result = installed.executeVarargs();
  99                 } catch (Exception e) {
 100                     e.printStackTrace();
 101                     Assert.fail("exception");
 102                     return;
 103                 }
 104                 Assert.assertEquals(RETURN_VALUE, result);
 105             });
 106 
 107             t1.start();
 108             t2.start();
 109             try {
 110                 t1.join();
 111                 t2.join();
 112             } catch (InterruptedException e) {
 113                 Assert.fail("interrupted");
 114             }
 115         }
 116     }
 117 }