29 import java.security.ProtectionDomain;
  30 import java.util.ArrayList;
  31 import java.util.Collections;
  32 import java.util.HashSet;
  33 import java.util.List;
  34 import java.util.Random;
  35 import java.util.Set;
  36 import java.util.concurrent.atomic.AtomicLong;
  37 import java.util.logging.Level;
  38 import java.util.logging.LogManager;
  39 import java.util.logging.Logger;
  40 
  41 
  42 /**
  43  * @test
  44  * @bug 8027670 8029281
  45  * @summary Deadlock in drainLoggerRefQueueBounded / readConfiguration
  46  *          caused by synchronization issues in Logger and LogManager.
  47  * @run main/othervm TestLogConfigurationDeadLockWithConf
  48  * @author danielfuchs

  49  */
  50 // This test is a best effort to try & detect issues. The test itself will run
  51 // for 8secs. This is usually sufficient to detect issues.
  52 // However to get a greater confidence it is recommended to run this test in a loop:
  53 // e.g. use something like:
  54 // $ while jtreg -jdk:$JDK -verbose:all  \
  55 //      test/java/util/logging/TestLogConfigurationDeadLockWithConf.java ; \
  56 //      do echo Running test again ; done
  57 // and let it run for a few hours...
  58 //
  59 public class TestLogConfigurationDeadLockWithConf {
  60 
  61     static volatile Exception thrown = null;
  62     static volatile boolean goOn = true;
  63 
  64     static final int READERS = 2;
  65     static final int LOGGERS = 2;
  66     static final long TIME = 4 * 1000; // 4 sec.
  67     static final long STEP = 1 * 1000;  // message every 1 sec.
  68     static final int  LCOUNT = 50; // 50 loggers created in a row...

  29 import java.security.ProtectionDomain;
  30 import java.util.ArrayList;
  31 import java.util.Collections;
  32 import java.util.HashSet;
  33 import java.util.List;
  34 import java.util.Random;
  35 import java.util.Set;
  36 import java.util.concurrent.atomic.AtomicLong;
  37 import java.util.logging.Level;
  38 import java.util.logging.LogManager;
  39 import java.util.logging.Logger;
  40 
  41 
  42 /**
  43  * @test
  44  * @bug 8027670 8029281
  45  * @summary Deadlock in drainLoggerRefQueueBounded / readConfiguration
  46  *          caused by synchronization issues in Logger and LogManager.
  47  * @run main/othervm TestLogConfigurationDeadLockWithConf
  48  * @author danielfuchs
  49  * @key randomness
  50  */
  51 // This test is a best effort to try & detect issues. The test itself will run
  52 // for 8secs. This is usually sufficient to detect issues.
  53 // However to get a greater confidence it is recommended to run this test in a loop:
  54 // e.g. use something like:
  55 // $ while jtreg -jdk:$JDK -verbose:all  \
  56 //      test/java/util/logging/TestLogConfigurationDeadLockWithConf.java ; \
  57 //      do echo Running test again ; done
  58 // and let it run for a few hours...
  59 //
  60 public class TestLogConfigurationDeadLockWithConf {
  61 
  62     static volatile Exception thrown = null;
  63     static volatile boolean goOn = true;
  64 
  65     static final int READERS = 2;
  66     static final int LOGGERS = 2;
  67     static final long TIME = 4 * 1000; // 4 sec.
  68     static final long STEP = 1 * 1000;  // message every 1 sec.
  69     static final int  LCOUNT = 50; // 50 loggers created in a row...