class PacketQueue

Outbound packet queue. More...

Definition#include <packet_queue.hh>
Template formPacketQueue<typename A>
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Detailed Description

The queue is of fixed size and does FIFO. When the queue becomes full the eldest packet behind the head is dropped, ie since the head may be in transit.

typedef list<const RipPacket<A>*> QueueRep

QueueRep

 PacketQueue ()

PacketQueue

 ~PacketQueue ()

~PacketQueue

void  enqueue_packet (const RipPacket<A>* pkt)

enqueue_packet

Place packet in ready to sent queue. The supplied packet is expected to have been allocated with the standard new operator and will be destructed by the packet queue when it is dropped or popped from the queue.

This may cause older packets in the queue to be dropped to make sufficient space for new packet.

bool  empty ()

empty

[const]

Returns: true if no packets are queued, false otherwise.

const RipPacket<A>*  head ()

head

[const]

Peek at head packet if it exists.

Returns: pointer to head packet if it exists, 0 otherwise.

void  pop_head ()

pop_head

Remove head packet.

bool  drop_old ()

drop_old

Discard packet behind head packet to make space for new packets.

Returns: true if an old packet was dropped, false if no packets dropped.

void  flush_packets ()

flush_packets

Flush queued packets.

void  set_max_buffered_bytes (uint32_t mb)

set_max_buffered_bytes

Set the maximum amount of data to buffer.

uint32_t  max_buffered_bytes ()

max_buffered_bytes

[const]

Get the maximum amount of buffered data.

uint32_t  buffered_bytes ()

buffered_bytes

[const]

Get the current amount of buffered data.

uint32_t  drop_count ()

drop_count

[const]

Get the number of packets dropped from queue.

void  reset_drop_count ()

reset_drop_count

Reset packet drop counter.

QueueRep _ready_packets

_ready_packets

[protected]

uint32_t _buffered_bytes

_buffered_bytes

[protected]

uint32_t _max_buffered_bytes

_max_buffered_bytes

[protected]

uint32_t _drops

_drops

[protected]


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