/
stats.h
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/
stats.h
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/*
* SRT - Secure, Reliable, Transport
* Copyright (c) 2021 Haivision Systems Inc.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
*/
#ifndef INC_SRT_STATS_H
#define INC_SRT_STATS_H
#include "platform_sys.h"
#include "packet.h"
namespace srt
{
namespace stats
{
class Packets
{
public:
Packets() : m_count(0) {}
Packets(uint32_t num) : m_count(num) {}
void reset()
{
m_count = 0;
}
Packets& operator+= (const Packets& other)
{
m_count += other.m_count;
return *this;
}
uint32_t count() const
{
return m_count;
}
private:
uint32_t m_count;
};
class BytesPackets
{
public:
BytesPackets()
: m_bytes(0)
, m_packets(0)
{}
BytesPackets(uint64_t bytes, size_t n = 1)
: m_bytes(bytes)
, m_packets(n)
{}
BytesPackets& operator+= (const BytesPackets& other)
{
m_bytes += other.m_bytes;
m_packets += other.m_packets;
return *this;
}
public:
void reset()
{
m_packets = 0;
m_bytes = 0;
}
void count(uint64_t bytes, size_t n = 1)
{
m_packets += (uint32_t) n;
m_bytes += bytes;
}
uint64_t bytes() const
{
return m_bytes;
}
uint32_t count() const
{
return m_packets;
}
uint64_t bytesWithHdr() const
{
return m_bytes + m_packets * CPacket::SRT_DATA_HDR_SIZE;
}
private:
uint64_t m_bytes;
uint32_t m_packets;
};
template <class METRIC_TYPE>
struct Metric
{
METRIC_TYPE trace;
METRIC_TYPE total;
void count(METRIC_TYPE val)
{
trace += val;
total += val;
}
void reset()
{
trace.reset();
total.reset();
}
void resetTrace()
{
trace.reset();
}
};
/// Sender-side statistics.
struct Sender
{
Metric<BytesPackets> sent;
Metric<BytesPackets> sentUnique;
Metric<BytesPackets> sentRetrans; // The number of data packets retransmitted by the sender.
Metric<Packets> lost; // The number of packets reported lost (including repeated reports) to the sender in NAKs.
Metric<BytesPackets> dropped; // The number of data packets dropped by the sender.
Metric<Packets> sentFilterExtra; // The number of packets generate by the packet filter and sent by the sender.
Metric<Packets> recvdAck; // The number of ACK packets received by the sender.
Metric<Packets> recvdNak; // The number of ACK packets received by the sender.
void reset()
{
sent.reset();
sentUnique.reset();
sentRetrans.reset();
lost.reset();
dropped.reset();
recvdAck.reset();
recvdNak.reset();
sentFilterExtra.reset();
}
void resetTrace()
{
sent.resetTrace();
sentUnique.resetTrace();
sentRetrans.resetTrace();
lost.resetTrace();
dropped.resetTrace();
recvdAck.resetTrace();
recvdNak.resetTrace();
sentFilterExtra.resetTrace();
}
};
/// Receiver-side statistics.
struct Receiver
{
Metric<BytesPackets> recvd;
Metric<BytesPackets> recvdUnique;
Metric<BytesPackets> recvdRetrans; // The number of retransmitted data packets received by the receiver.
Metric<BytesPackets> lost; // The number of packets detected by the receiver as lost.
Metric<BytesPackets> dropped; // The number of packets dropped by the receiver (as too-late to be delivered).
Metric<BytesPackets> recvdBelated; // The number of belated packets received (dropped as too late but eventually received).
Metric<BytesPackets> undecrypted; // The number of packets received by the receiver that failed to be decrypted.
Metric<Packets> recvdFilterExtra; // The number of filter packets (e.g. FEC) received by the receiver.
Metric<Packets> suppliedByFilter; // The number of lost packets got from the packet filter at the receiver side (e.g. loss recovered by FEC).
Metric<Packets> lossFilter; // The number of lost DATA packets not recovered by the packet filter at the receiver side.
Metric<Packets> sentAck; // The number of ACK packets sent by the receiver.
Metric<Packets> sentNak; // The number of NACK packets sent by the receiver.
void reset()
{
recvd.reset();
recvdUnique.reset();
recvdRetrans.reset();
lost.reset();
dropped.reset();
recvdBelated.reset();
undecrypted.reset();
recvdFilterExtra.reset();
suppliedByFilter.reset();
lossFilter.reset();
sentAck.reset();
sentNak.reset();
}
void resetTrace()
{
recvd.resetTrace();
recvdUnique.resetTrace();
recvdRetrans.resetTrace();
lost.resetTrace();
dropped.resetTrace();
recvdBelated.resetTrace();
undecrypted.resetTrace();
recvdFilterExtra.resetTrace();
suppliedByFilter.resetTrace();
lossFilter.resetTrace();
sentAck.resetTrace();
sentNak.resetTrace();
}
};
} // namespace stats
} // namespace srt
#endif // INC_SRT_STATS_H