27  * @bug 8031320
  28  * @summary Verify that on low abort ratio method will be recompiled.
  29  * @library /test/lib /
  30  * @modules java.base/jdk.internal.misc
  31  *          java.management
  32  * @build sun.hotspot.WhiteBox
  33  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  34  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  35  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  36  *                   -XX:+WhiteBoxAPI
  37  *                   compiler.rtm.locking.TestRTMDeoptOnLowAbortRatio
  38  */
  39 
  40 package compiler.rtm.locking;
  41 
  42 import compiler.testlibrary.rtm.AbortProvoker;
  43 import compiler.testlibrary.rtm.CompilableTest;
  44 import compiler.testlibrary.rtm.RTMLockingStatistics;
  45 import compiler.testlibrary.rtm.RTMTestBase;
  46 import compiler.testlibrary.rtm.predicate.SupportedCPU;

  47 import compiler.testlibrary.rtm.predicate.SupportedVM;
  48 import jdk.internal.misc.Unsafe;
  49 import jdk.test.lib.Asserts;
  50 import jdk.test.lib.process.OutputAnalyzer;
  51 import jdk.test.lib.unsafe.UnsafeHelper;
  52 import jdk.test.lib.cli.CommandLineOptionTest;
  53 import jdk.test.lib.cli.predicate.AndPredicate;
  54 
  55 import java.util.List;
  56 
  57 /**
  58  * Test verifies that low abort ratio method will be deoptimized with
  59  * <i>rtm_state_change</i> reason and will continue to use RTM-based lock
  60  * elision after that.
  61  * This test make asserts on total locks count done by compiled method,
  62  * so in order to avoid issue with retriable locks -XX:RTMRetryCount=0 is used.
  63  * For more details on that issue see {@link TestUseRTMAfterLockInflation}.
  64  */
  65 public class TestRTMDeoptOnLowAbortRatio extends CommandLineOptionTest {
  66     private static final long LOCKING_THRESHOLD = 100L;
  67     private static final long ABORT_THRESHOLD = LOCKING_THRESHOLD / 2L;
  68 
  69     private TestRTMDeoptOnLowAbortRatio() {
  70         super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
  71     }
  72 
  73     @Override
  74     protected void runTestCases() throws Throwable {
  75         verifyRTMDeopt(false);
  76         verifyRTMDeopt(true);
  77     }
  78 
  79     private void verifyRTMDeopt(boolean useStackLock) throws Throwable {
  80         CompilableTest test = new Test();
  81         String logFileName = String.format("rtm_deopt_%s_stack_lock.xml",
  82                                            useStackLock ? "use" : "no");
  83 
  84         OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
  85                 logFileName,
  86                 test,
  87                 "-XX:+UseRTMDeopt",
  88                 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
  89                         useStackLock),
  90                 CommandLineOptionTest.prepareNumericFlag("RTMLockingThreshold",

  27  * @bug 8031320
  28  * @summary Verify that on low abort ratio method will be recompiled.
  29  * @library /test/lib /
  30  * @modules java.base/jdk.internal.misc
  31  *          java.management
  32  * @build sun.hotspot.WhiteBox
  33  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  34  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  35  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  36  *                   -XX:+WhiteBoxAPI
  37  *                   compiler.rtm.locking.TestRTMDeoptOnLowAbortRatio
  38  */
  39 
  40 package compiler.rtm.locking;
  41 
  42 import compiler.testlibrary.rtm.AbortProvoker;
  43 import compiler.testlibrary.rtm.CompilableTest;
  44 import compiler.testlibrary.rtm.RTMLockingStatistics;
  45 import compiler.testlibrary.rtm.RTMTestBase;
  46 import compiler.testlibrary.rtm.predicate.SupportedCPU;
  47 import compiler.testlibrary.rtm.predicate.SupportedOS;
  48 import compiler.testlibrary.rtm.predicate.SupportedVM;
  49 import jdk.internal.misc.Unsafe;
  50 import jdk.test.lib.Asserts;
  51 import jdk.test.lib.process.OutputAnalyzer;
  52 import jdk.test.lib.unsafe.UnsafeHelper;
  53 import jdk.test.lib.cli.CommandLineOptionTest;
  54 import jdk.test.lib.cli.predicate.AndPredicate;
  55 
  56 import java.util.List;
  57 
  58 /**
  59  * Test verifies that low abort ratio method will be deoptimized with
  60  * <i>rtm_state_change</i> reason and will continue to use RTM-based lock
  61  * elision after that.
  62  * This test make asserts on total locks count done by compiled method,
  63  * so in order to avoid issue with retriable locks -XX:RTMRetryCount=0 is used.
  64  * For more details on that issue see {@link TestUseRTMAfterLockInflation}.
  65  */
  66 public class TestRTMDeoptOnLowAbortRatio extends CommandLineOptionTest {
  67     private static final long LOCKING_THRESHOLD = 100L;
  68     private static final long ABORT_THRESHOLD = LOCKING_THRESHOLD / 2L;
  69 
  70     private TestRTMDeoptOnLowAbortRatio() {
  71         super(new AndPredicate(new SupportedCPU(), new SupportedOS(), new SupportedVM()));
  72     }
  73 
  74     @Override
  75     protected void runTestCases() throws Throwable {
  76         verifyRTMDeopt(false);
  77         verifyRTMDeopt(true);
  78     }
  79 
  80     private void verifyRTMDeopt(boolean useStackLock) throws Throwable {
  81         CompilableTest test = new Test();
  82         String logFileName = String.format("rtm_deopt_%s_stack_lock.xml",
  83                                            useStackLock ? "use" : "no");
  84 
  85         OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
  86                 logFileName,
  87                 test,
  88                 "-XX:+UseRTMDeopt",
  89                 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
  90                         useStackLock),
  91                 CommandLineOptionTest.prepareNumericFlag("RTMLockingThreshold",