End of Life Ruby 3.1 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

Thread#group

thr.group → thgrp or nil

VALUE
rb_thread_group(VALUE thread)
{
    return rb_thread_ptr(thread)->thgroup;
}

Returns the ThreadGroup which contains the given thread.

Example

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

See also #fetch #inspect #exit #join also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.0