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  * @test
  27  * @bug 8031320
  28  * @summary Verify that rtm locking is used for stack locks before
  29  *          inflation and after it used for inflated locks.
  30  * @library /testlibrary /test/lib /
  31  * @modules java.base/jdk.internal.misc
  32  *          java.management
  33  * @build TestUseRTMAfterLockInflation
  34  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  35  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  36  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  37  *                   -XX:+WhiteBoxAPI TestUseRTMAfterLockInflation

  38  */
  39 
  40 import java.util.List;
  41 
  42 import jdk.test.lib.*;
  43 import jdk.test.lib.cli.CommandLineOptionTest;
  44 import jdk.test.lib.cli.predicate.AndPredicate;
  45 import compiler.testlibrary.rtm.*;
  46 import compiler.testlibrary.rtm.predicate.SupportedCPU;
  47 import compiler.testlibrary.rtm.predicate.SupportedVM;




  48 


  49 /**
  50  * Test verifies that RTM is used after lock inflation by executing compiled
  51  * method with RTM-based lock elision using stack lock first, then that lock
  52  * is inflated and the same compiled method invoked again.
  53  *
  54  * Compiled method invoked {@code AbortProvoker.DEFAULT_ITERATIONS} times before
  55  * lock inflation and the same amount of times after inflation.
  56  * As a result total locks count should be equal to
  57  * {@code 2 * AbortProvoker.DEFAULT_ITERATIONS}.
  58  * It is a pretty strict assertion which could fail if some retriable abort
  59  * happened: it could be {@code AbortType.RETRIABLE} or
  60  * {@code AbortType.MEM_CONFLICT}, but unfortunately abort can has both these
  61  * reasons simultaneously. In order to avoid false negative failures related
  62  * to incorrect aborts counting, -XX:RTMRetryCount=0 is used.
  63  */
  64 public class TestUseRTMAfterLockInflation extends CommandLineOptionTest {
  65     private static final long EXPECTED_LOCKS
  66             = 2L * AbortProvoker.DEFAULT_ITERATIONS;
  67 
  68     private TestUseRTMAfterLockInflation() {

  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  * @test
  27  * @bug 8031320
  28  * @summary Verify that rtm locking is used for stack locks before
  29  *          inflation and after it used for inflated locks.
  30  * @library /testlibrary /test/lib /
  31  * @modules java.base/jdk.internal.misc
  32  *          java.management
  33  * @build compiler.rtm.locking.TestUseRTMAfterLockInflation
  34  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  35  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  36  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  37  *                   -XX:+WhiteBoxAPI
  38  *                   compiler.rtm.locking.TestUseRTMAfterLockInflation
  39  */
  40 
  41 package compiler.rtm.locking;
  42 
  43 import compiler.testlibrary.rtm.AbortProvoker;
  44 import compiler.testlibrary.rtm.AbortType;
  45 import compiler.testlibrary.rtm.RTMLockingStatistics;
  46 import compiler.testlibrary.rtm.RTMTestBase;
  47 import compiler.testlibrary.rtm.predicate.SupportedCPU;
  48 import compiler.testlibrary.rtm.predicate.SupportedVM;
  49 import jdk.test.lib.Asserts;
  50 import jdk.test.lib.OutputAnalyzer;
  51 import jdk.test.lib.cli.CommandLineOptionTest;
  52 import jdk.test.lib.cli.predicate.AndPredicate;
  53 
  54 import java.util.List;
  55 
  56 /**
  57  * Test verifies that RTM is used after lock inflation by executing compiled
  58  * method with RTM-based lock elision using stack lock first, then that lock
  59  * is inflated and the same compiled method invoked again.
  60  *
  61  * Compiled method invoked {@code AbortProvoker.DEFAULT_ITERATIONS} times before
  62  * lock inflation and the same amount of times after inflation.
  63  * As a result total locks count should be equal to
  64  * {@code 2 * AbortProvoker.DEFAULT_ITERATIONS}.
  65  * It is a pretty strict assertion which could fail if some retriable abort
  66  * happened: it could be {@code AbortType.RETRIABLE} or
  67  * {@code AbortType.MEM_CONFLICT}, but unfortunately abort can has both these
  68  * reasons simultaneously. In order to avoid false negative failures related
  69  * to incorrect aborts counting, -XX:RTMRetryCount=0 is used.
  70  */
  71 public class TestUseRTMAfterLockInflation extends CommandLineOptionTest {
  72     private static final long EXPECTED_LOCKS
  73             = 2L * AbortProvoker.DEFAULT_ITERATIONS;
  74 
  75     private TestUseRTMAfterLockInflation() {