1 /*
   2  * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   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.
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  23 
  24 /*
  25  * @test LockCompilationTest
  26  * @bug 8059624 8152169
  27  * @library /testlibrary /test/lib /
  28  * @modules java.base/jdk.internal.misc
  29  * @modules java.management
  30  * @build LockCompilationTest
  31  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  32  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  33  * @run main/othervm -Xbootclasspath/a:. -Xmixed -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:-UseCounterDecay LockCompilationTest
  34  * @summary testing of WB::lock/unlockCompilation()
  35  */
  36 
  37 import java.io.OutputStream;
  38 import java.io.PrintWriter;
  39 import java.util.concurrent.BrokenBarrierException;
  40 import java.util.concurrent.CyclicBarrier;
  41 
  42 import compiler.whitebox.CompilerWhiteBoxTest;
  43 import jdk.test.lib.Asserts;
  44 
  45 public class LockCompilationTest extends CompilerWhiteBoxTest {
  46 
  47     public static void main(String[] args) throws Exception {
  48         // This case waits for 5 seconds and verifies that the method hasn't been
  49         // compiled during that time. Only do that for one of the test cases.
  50 
  51         // Only compile SimpleTestCaseHelper.method and exclude all other to ensure no
  52         // contention on the compile queue causes problems.
  53         String directive =
  54                 "[{ match:\"*SimpleTestCaseHelper.method\", Exclude:false}, " +
  55                 " { match:\"*.*\", Exclude:true}]";
  56         if (WHITE_BOX.addCompilerDirective(directive) != 2) {
  57             throw new RuntimeException("Could not add directive");
  58         }
  59         try {
  60             CompilerWhiteBoxTest.main(LockCompilationTest::new, new String[] {"METHOD_TEST"});
  61         } finally {
  62             WHITE_BOX.removeCompilerDirective(2);
  63         }
  64 
  65     }
  66 
  67     private LockCompilationTest(TestCase testCase) {
  68         super(testCase);
  69         // to prevent inlining of #method
  70         WHITE_BOX.testSetDontInlineMethod(method, true);
  71     }
  72 
  73     protected void test() throws Exception {
  74         checkNotCompiled();
  75 
  76         System.out.println("locking compilation");
  77         WHITE_BOX.lockCompilation();
  78 
  79         try {
  80             System.out.println("trying to compile");
  81             compile();
  82             // to check if it works correctly w/ safepoints
  83             System.out.println("going to safepoint");
  84             WHITE_BOX.fullGC();
  85             // Sleep a while and then make sure the compile is still waiting
  86             Thread.sleep(5000);
  87 
  88             Asserts.assertTrue(
  89                     WHITE_BOX.isMethodQueuedForCompilation(method),
  90                     method + " must be in queue");
  91             Asserts.assertFalse(
  92                     WHITE_BOX.isMethodCompiled(method, false),
  93                     method + " must be not compiled");
  94             Asserts.assertEQ(
  95                     WHITE_BOX.getMethodCompilationLevel(method, false), 0,
  96                     method + " comp_level must be == 0");
  97             Asserts.assertFalse(
  98                     WHITE_BOX.isMethodCompiled(method, true),
  99                     method + " must be not osr_compiled");
 100             Asserts.assertEQ(
 101                     WHITE_BOX.getMethodCompilationLevel(method, true), 0,
 102                     method + " osr_comp_level must be == 0");
 103         } finally {
 104             System.out.println("unlocking compilation");
 105             WHITE_BOX.unlockCompilation();
 106         }
 107         waitBackgroundCompilation();
 108         Asserts.assertFalse(
 109                 WHITE_BOX.isMethodQueuedForCompilation(method),
 110                 method + " must not be in queue");
 111     }
 112 }
 113