Examples of JavaMonitor

javax.tools.diagnostics.runtime.java.JavaMonitor
Represents the underlying monitor used by a Java Virtual Machine to manage locking and synchronization of a Java object.

The underlying monitor is implementation specific. Some implementations may choose to use their monitor implementations to control access to Java Virtual Machine resources that are not objects. In such cases, {@link #getObject()} will return null.

Java programmers use the synchronized modifier on methods and the synchronized block within methods to control simultaneous access to Java objects. Java uses monitors for this synchronization, which can be implemented using a variety of techniques. The JavaMonitor class presents the simple monitor abstraction that allows the caller to determine:
- Which thread currently owns the monitor
- Which threads are waiting to be woken after they have gotten ownship of the monitor and relinquished it, normally within Object.wait() within a synchronized block or method.
- The threads that waiting to get ownership of the monitor. These are typically threads waiting to enter a synchronized block or method.
This API presents only what exists at the Java Virtual Machine bytecode level. The locking facilities provided by the {@link java.util.concurrent.lock}package are expected to be implemented on top of ordinary Java monitors.

Examples of javax.tools.diagnostics.runtime.java.JavaMonitor


    assertEquals("Enters count incorrect :" + count, 2, count);
  }


  public void testCountOwners_0_2_1() throws Exception {
    JavaMonitor monitor = (JavaMonitor)setup.findMonitorThreadConfig(0, 2, 1).getMonitor();
    JavaThread owner = monitor.getOwner();


    assertNotNull("Owner count incorrect", owner);
  }

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Examples of javax.tools.diagnostics.runtime.java.JavaMonitor


    assertNotNull("Owner count incorrect", owner);
  }


  public void testNameWaiters_0_2_1() throws Exception {
    JavaMonitor monitor = (JavaMonitor)setup.findMonitorThreadConfig(0, 2, 1).getMonitor();
    int count = 0;
    Iterator waiters = monitor.getNotifyWaiters().iterator();


    while (waiters.hasNext()) {
      JavaThread next = (JavaThread) waiters.next();
      assertEquals("Waiters name incorrect", generatePrefix(0, 2, 1)
          + "-" + SetupJavaMonitor_ObjectMonitors.monitorNotifyThreadName + "-" + count, next

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Examples of javax.tools.diagnostics.runtime.java.JavaMonitor

      count++;
    }
  }


  public void testNameEnters_0_2_1() throws Exception {
    JavaMonitor monitor = (JavaMonitor)setup.findMonitorThreadConfig(0, 2, 1).getMonitor();
    Iterator enters = monitor.getEnterWaiters().iterator();


    String error = checkNames(enters, generatePrefix(0, 2, 1) + "-"
        + SetupJavaMonitor_ObjectMonitors.monitorEnterThreadName, 2);
    
    assertNull(error, error);

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Examples of javax.tools.diagnostics.runtime.java.JavaMonitor

    
    assertNull(error, error);
  }
  
  public void testNameOwners_0_2_1() throws Exception {
    JavaMonitor monitor = (JavaMonitor)setup.findMonitorThreadConfig(0, 2, 1).getMonitor();
    JavaThread owner = monitor.getOwner();


    assertEquals("Owner name incorrect", generatePrefix(0, 2, 1) + "-"
        + SetupJavaMonitor_ObjectMonitors.monitorOwnerThreadName + "-0", owner.getName());
  }

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Examples of javax.tools.diagnostics.runtime.java.JavaMonitor

  }
    
  ///////////////////////////////////////////


  public void testFindMonitor_2_2_1() throws Exception {
    JavaMonitor monitor = (JavaMonitor)setup.findMonitorThreadConfig(2, 2, 1).getMonitor();


    assertNotNull("Couldn't find monitor 2-2-1", monitor);
  }

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Examples of javax.tools.diagnostics.runtime.java.JavaMonitor


    assertNotNull("Couldn't find monitor 2-2-1", monitor);
  }


  public void testGetID_2_2_1() throws Exception {
    JavaMonitor monitor = (JavaMonitor)setup.findMonitorThreadConfig(2, 2, 1).getMonitor();


    assertNotNull("JavaMonitor.getID() for 2-2-1 is null.", monitor.getID());
  }

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Examples of javax.tools.diagnostics.runtime.java.JavaMonitor


    assertNotNull("JavaMonitor.getID() for 2-2-1 is null.", monitor.getID());
  }


  public void testGetName_2_2_1() throws Exception {
    JavaMonitor monitor = (JavaMonitor)setup.findMonitorThreadConfig(2, 2, 1).getMonitor();
    assertNotNull("JavaMonitor.getName() for 2-2-1 is null.", monitor
        .getName());
  }

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Examples of javax.tools.diagnostics.runtime.java.JavaMonitor

    assertNotNull("JavaMonitor.getName() for 2-2-1 is null.", monitor
        .getName());
  }


  public void testCountWaiters_2_2_1() throws Exception {
    JavaMonitor monitor = (JavaMonitor)setup.findMonitorThreadConfig(2, 2, 1).getMonitor();
    int count = 0;
    Iterator waiters = monitor.getNotifyWaiters().iterator();


    while (waiters.hasNext()) {
      Object next = waiters.next();
      count++;
    }

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Examples of javax.tools.diagnostics.runtime.java.JavaMonitor


    assertEquals("Waiters count incorrect :" + count, 2, count);
  }


  public void testCountEnters_2_2_1() throws Exception {
    JavaMonitor monitor = (JavaMonitor)setup.findMonitorThreadConfig(2, 2, 1).getMonitor();
    int count = 0;
    Iterator enters = monitor.getEnterWaiters().iterator();


    while (enters.hasNext()) {
      Object next = enters.next();
      count++;
    }

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Examples of javax.tools.diagnostics.runtime.java.JavaMonitor


    assertEquals("Enters count incorrect :" + count, 2, count);
  }


  public void testCountOwners_2_2_1() throws Exception {
    JavaMonitor monitor = (JavaMonitor)setup.findMonitorThreadConfig(2, 2, 1).getMonitor();
    JavaThread owner = monitor.getOwner();


    assertNotNull("Owner count incorrect", owner);
  }

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