ThreadGroupReference (Java SE 19 & JDK 19) (original) (raw)

All Superinterfaces:

[Mirror](Mirror.html "interface in com.sun.jdi"), [ObjectReference](ObjectReference.html "interface in com.sun.jdi"), [Value](Value.html "interface in com.sun.jdi")

public interface ThreadGroupReferenceextends 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

• Field Summary

• Method Summary

[name](#name%28%29)()
Returns the name of this thread group.
[parent](#parent%28%29)()
Returns the parent of this thread group.
void
[resume](#resume%28%29)()
Resumes all threads in this thread group.
void
[suspend](#suspend%28%29)()
Suspends all threads in this thread group.
[threads](#threads%28%29)()
Returns a List containing a ThreadReference for each live platform thread in this thread group.

Methods declared in interface com.sun.jdi.ObjectReference

[disableCollection](ObjectReference.html#disableCollection%28%29), [enableCollection](ObjectReference.html#enableCollection%28%29), [entryCount](ObjectReference.html#entryCount%28%29), [equals](ObjectReference.html#equals%28java.lang.Object%29), [getValue](ObjectReference.html#getValue%28com.sun.jdi.Field%29), [getValues](ObjectReference.html#getValues%28java.util.List%29), [hashCode](ObjectReference.html#hashCode%28%29), [invokeMethod](ObjectReference.html#invokeMethod%28com.sun.jdi.ThreadReference,com.sun.jdi.Method,java.util.List,int%29), [isCollected](ObjectReference.html#isCollected%28%29), [owningThread](ObjectReference.html#owningThread%28%29), [referenceType](ObjectReference.html#referenceType%28%29), [referringObjects](ObjectReference.html#referringObjects%28long%29), [setValue](ObjectReference.html#setValue%28com.sun.jdi.Field,com.sun.jdi.Value%29), [uniqueID](ObjectReference.html#uniqueID%28%29), [waitingThreads](ObjectReference.html#waitingThreads%28%29)

Methods declared in interface com.sun.jdi.Value

[type](Value.html#type%28%29)

• Method Details

  • 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](VMCannotBeModifiedException.html "class in com.sun.jdi") - 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](VMCannotBeModifiedException.html "class in com.sun.jdi") - if the VirtualMachine is read-only - see VirtualMachine.canBeModified().

  • threads

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

  • 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.