Thread::SizedQueue#max=

# File tmp/rubies/ruby-4.1.0-preview1/thread_sync.rb, line 293
def max=(vmax)
  Primitive.cstmt! %{
    rb_len_t max = NUM2LEN(vmax);
    if (max <= 0) {
        rb_raise(rb_eArgError, "queue size must be positive");
    }

    rb_len_t diff = 0;
    struct rb_szqueue *sq = szqueue_ptr(self);

    if (max > sq->max) {
        diff = max - sq->max;
    }
    sq->max = max;
    sync_wakeup(szqueue_pushq(sq), diff);
    return vmax;
  }
end