Module jdk.jdi
Package com.sun.jdi

Interface ThreadGroupReference

All Superinterfaces:
Mirror, ObjectReference, Value

public interface ThreadGroupReference extends ObjectReference
A thread group object from the target VM. A ThreadGroupReference is an ObjectReference with additional access to threadgroup-specific information from the target VM.
Since:
1.3
  • Method Details

    • name

      String name()
      Returns the name of this thread group.
      Returns:
      the string containing the thread group name.
    • parent

      Returns the parent of this thread group.
      Returns:
      a ThreadGroupReference mirroring the parent of this thread group in the target VM, or null if this is a top-level thread group.
    • suspend

      void suspend()
      Suspends all threads in this thread group. Each thread in this group and in all of its subgroups will be suspended as described in ThreadReference.suspend(). This is not guaranteed to be an atomic operation; if the target VM is not interrupted at the time this method is called, it is possible that new threads will be created between the time that threads are enumerated and all of them have been suspended.
      Throws:
      VMCannotBeModifiedException - if the VirtualMachine is read-only - see VirtualMachine.canBeModified().
    • resume

      void resume()
      Resumes all threads in this thread group. Each thread in this group and in all of its subgroups will be resumed as described in ThreadReference.resume().
      Throws:
      VMCannotBeModifiedException - if the VirtualMachine is read-only - see VirtualMachine.canBeModified().
    • threads

      List<ThreadReference> threads()
      Returns a List containing a ThreadReference for each live thread in this thread group. Virtual threads are not considered live threads in a thread group and are not included. Only the live threads in this immediate thread group (and not its subgroups) are returned. A thread is alive if it has been started and has not yet been stopped.
      Returns:
      a List of ThreadReference objects mirroring the live threads from this thread group in the target VM.
    • threadGroups

      List<ThreadGroupReference> threadGroups()
      Returns a List containing a ThreadGroupReference for each subgroup. Only the thread groups in this immediate thread group (and not its subgroups) are returned.
      Returns:
      a List of ThreadGroupReference objects mirroring the thread groups from this thread group in the target VM.