Channel Buffer Full



• When channel buffer is full and a goroutine tries to send value.
• Sender Goroutine gets blocked, it is parked on sendq.
• Data will be save in the elem field of the sudog structure.
• When Receiver comes along, it dequeues the value from buffer.
• Enqueues the data from elem field to the buffer.
• Pops the goroutine in sendq, and puts it into runnable state.