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/*
* Copyright (c) 2017 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef __ANDROID__
#include <android/log.h>
#endif
#include "icnet_transport_raaqm_data_path.h"
namespace icnet {
RaaqmDataPath::RaaqmDataPath(double drop_factor,
double minimum_drop_probability,
unsigned new_timer,
unsigned int samples,
uint64_t new_rtt,
uint64_t new_rtt_min,
uint64_t new_rtt_max,
unsigned new_pd)
: drop_factor_(drop_factor),
minimum_drop_probability_(minimum_drop_probability),
timer_(new_timer),
samples_(samples),
rtt_(new_rtt),
rtt_min_(new_rtt_min),
rtt_max_(new_rtt_max),
prop_delay_(new_pd),
new_prop_delay_(false),
drop_prob_(0),
packets_received_(0),
last_packets_received_(0),
m_packets_bytes_received_(0),
last_packets_bytes_received_(0),
raw_data_bytes_received_(0),
last_raw_data_bytes_received_(0),
average_rtt_(0),
alpha_(ALPHA) {
gettimeofday(&previous_call_of_path_reporter_, 0);
gettimeofday(&m_last_received_pkt_, 0);
}
RaaqmDataPath &RaaqmDataPath::pathReporter() {
struct timeval now;
gettimeofday(&now, 0);
double rate, delta_t;
delta_t = getMicroSeconds(now) - getMicroSeconds(previous_call_of_path_reporter_);
rate = (m_packets_bytes_received_ - last_packets_bytes_received_) * 8 / delta_t; // MB/s
#ifdef __ANDROID__
__android_log_print(ANDROID_LOG_DEBUG, "libICNet", "RaaqmDataPath status report: at time %ld . %ld \n", now.tv_sec, now.tv_usec);
__android_log_print(ANDROID_LOG_DEBUG, "libICNet", "path\n");
__android_log_print(ANDROID_LOG_DEBUG, "libICNet", "Packets Received: %lld\n", (packets_received_ - last_packets_received_));
__android_log_print(ANDROID_LOG_DEBUG, "libICNet", "delta_t %f [us]\n", delta_t);
__android_log_print(ANDROID_LOG_DEBUG, "libICNet", "rate %f [Mbps]\n", rate);
__android_log_print(ANDROID_LOG_DEBUG, "libICNet", "Last RTT %llu [us]\n", rtt_);
__android_log_print(ANDROID_LOG_DEBUG, "libICNet", "Max RTT %llu [us]\n", rtt_max_);
__android_log_print(ANDROID_LOG_DEBUG, "libICNet", "Min RTT %llu [us]\n", rtt_min_);
__android_log_print(ANDROID_LOG_DEBUG, "libICNet", "Prop delay %llu [us]\n", prop_delay_);
#else
std::cout << "RaaqmDataPath status report: " << "at time " << (long) now.tv_sec << "." << (unsigned) now.tv_usec
<< " sec:\n" << (void *) this << " path\n" << "Packets Received: "
<< (packets_received_ - last_packets_received_) << "\n" << "delta_t " << delta_t << " [us]\n" << "rate "
<< rate << " [Mbps]\n" << "Last RTT " << rtt_ << " [us]\n" << "Max RTT " << rtt_max_ << " [us]\n"
<< "Min RTT " << rtt_min_ << " [us]\n" << "Prop delay " << prop_delay_ << " [us]\n";
#endif
last_packets_received_ = packets_received_;
last_packets_bytes_received_ = m_packets_bytes_received_;
gettimeofday(&previous_call_of_path_reporter_, 0);
return *this;
}
RaaqmDataPath &RaaqmDataPath::insertNewRtt(uint64_t new_rtt) {
rtt_ = new_rtt;
rtt_samples_.get<byArrival>().push_back(new_rtt);
if (rtt_samples_.get<byArrival>().size() > samples_) {
rtt_samples_.get<byArrival>().pop_front();
}
rtt_max_ = *(rtt_samples_.get<byOrder>().rbegin());
rtt_min_ = *(rtt_samples_.get<byOrder>().begin());
if (rtt_min_ < prop_delay_) {
new_prop_delay_ = true;
prop_delay_ = rtt_min_;
}
gettimeofday(&m_last_received_pkt_, 0);
return *this;
}
RaaqmDataPath &RaaqmDataPath::updateReceivedStats(std::size_t packet_size, std::size_t data_size) {
packets_received_++;
m_packets_bytes_received_ += packet_size;
raw_data_bytes_received_ += data_size;
return *this;
}
double RaaqmDataPath::getDropFactor() {
return drop_factor_;
}
double RaaqmDataPath::getDropProb() {
return drop_prob_;
}
RaaqmDataPath &RaaqmDataPath::setDropProb(double dropProb) {
drop_prob_ = dropProb;
return *this;
}
double RaaqmDataPath::getMinimumDropProbability() {
return minimum_drop_probability_;
}
double RaaqmDataPath::getTimer() {
return timer_;
}
RaaqmDataPath &RaaqmDataPath::smoothTimer() {
timer_ = (1 - TIMEOUT_SMOOTHER) * timer_ + (TIMEOUT_SMOOTHER) * rtt_ * (TIMEOUT_RATIO);
return *this;
}
double RaaqmDataPath::getRtt() {
return rtt_;
}
double RaaqmDataPath::getAverageRtt() {
return average_rtt_;
}
double RaaqmDataPath::getRttMax() {
return rtt_max_;
}
double RaaqmDataPath::getRttMin() {
return rtt_min_;
}
unsigned RaaqmDataPath::getSampleValue() {
return samples_;
}
unsigned RaaqmDataPath::getRttQueueSize() {
return rtt_samples_.get<byArrival>().size();
}
RaaqmDataPath &RaaqmDataPath::updateDropProb() {
drop_prob_ = 0.0;
if (getSampleValue() == getRttQueueSize()) {
if (rtt_max_ == rtt_min_) {
drop_prob_ = minimum_drop_probability_;
} else {
drop_prob_ = minimum_drop_probability_ + drop_factor_ * (rtt_ - rtt_min_) / (rtt_max_ - rtt_min_);
}
}
return *this;
}
double RaaqmDataPath::getMicroSeconds(struct timeval &time) {
return (double) (time.tv_sec) * 1000000 + (double) (time.tv_usec);
}
void RaaqmDataPath::setAlpha(double alpha) {
if (alpha >= 0 && alpha <= 1) {
alpha_ = alpha;
}
}
bool RaaqmDataPath::newPropagationDelayAvailable() {
bool r = new_prop_delay_;
new_prop_delay_ = false;
return r;
}
unsigned int RaaqmDataPath::getPropagationDelay() {
return prop_delay_;
}
bool RaaqmDataPath::isStale() {
struct timeval now;
gettimeofday(&now, 0);
double time = getMicroSeconds(now) - getMicroSeconds(m_last_received_pkt_);
if (time > 2000000) {
return true;
}
return false;
}
} // end namespace icnet
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