method

group

v2_6_3 - Show latest stable - Class: Thread

group()

public

Returns the ThreadGroup which contains the given thread, or returns nil if thr is not a member of any group.

Thread.main.group   #=> #<ThreadGroup:0x4029d914>

VALUE
rb_thread_group(VALUE thread)
{
    VALUE group = rb_thread_ptr(thread)->thgroup;
    return group == 0 ? Qnil : group;
}