instance method `wait_poll`

Ruby on Rails 4.1.16

Since v4.0.13 Private

Available in: v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

wait_poll(timeout)

Waits on the queue up to timeout seconds, then removes and returns the head of the queue.

Parameters

timeout req

Source

# File activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb, line 176
        def wait_poll(timeout)
          @num_waiting += 1

          t0 = Time.now
          elapsed = 0
          loop do
            @cond.wait(timeout - elapsed)

            return remove if any?

            elapsed = Time.now - t0
            if elapsed >= timeout
              msg = 'could not obtain a database connection within %0.3f seconds (waited %0.3f seconds)' %
                [timeout, elapsed]
              raise ConnectionTimeoutError, msg
            end
          end
        ensure
          @num_waiting -= 1
        end

Defined in activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb line 176 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::ConnectionAdapters::ConnectionPool::Queue

Signature

Parameters