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