250 lines
7.0 KiB
C++
250 lines
7.0 KiB
C++
/*
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PIP - Platform Independent Primitives
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Speed and quality in/out diagnostics
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Andrey Bychkov work.a.b@yandex.ru, Ivan Pelipenko peri4ko@yandex.ru
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "pidiagnostics.h"
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/** \class PIDiagnostics
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* \brief Connection quality diagnostics
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* \details
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* \section PIDiagnostics_sec0 Synopsis
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* This class provide abstract connection quality diagnostics and
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* counting. You should create instance of %PIDiagnostics and on
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* packet receive call function \a received(), on packet send call
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* function \a sended(). %PIDiagnostics calculates correct, wrong
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* and sended counters, packets per second, bytes per seconds,
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* immediate and integral receive frequencies and receive/send speeds
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* in human readable representation. There statistics are calculates
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* one time per period, by default 1 second. To calculate them you
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* should start %PIDiagnostics with function \a start() or pass \b true
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* to constructor.
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* */
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PIDiagnostics::State::State() {
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immediate_freq = integral_freq = 0.f;
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received_packets_per_sec = 0ull;
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received_packets = 0ull;
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received_packets_wrong = 0ull;
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received_bytes_per_sec = 0ull;
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received_bytes = 0ull;
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received_bytes_wrong = 0ull;
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sended_packets_per_sec = 0ull;
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sended_packets = 0ull;
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sended_bytes_per_sec = 0ull;
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sended_bytes = 0ull;
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receive_speed = send_speed = PIString::readableSize(0) + "/s";
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quality = PIDiagnostics::Unknown;
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}
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PIDiagnostics::PIDiagnostics(bool start_): PITimer(/*PITimer::Pool*/) {
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disconn_ = 0.;
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//piCout << "PIDiagnostics construct";
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setInterval(100);
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reset();
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setDisconnectTimeout(3.);
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changeDisconnectTimeout(3.);
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if (start_) PITimer::start(100);
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//piCout << "PIDiagnostics construct done";
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}
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PIDiagnostics::~PIDiagnostics() {
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//piCout << "~PIDiagnostics start...";
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//piCout << "~PIDiagnostics done!";
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}
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PIDiagnostics::State PIDiagnostics::state() const {
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mutex_state.lock();
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State ret = cur_state;
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mutex_state.unlock();
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return ret;
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}
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PIDiagnostics::Quality PIDiagnostics::quality() const {
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PIDiagnostics::Quality ret;
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mutex_state.lock();
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ret = cur_state.quality;
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mutex_state.unlock();
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return ret;
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}
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PIString PIDiagnostics::receiveSpeed() const {
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mutex_state.lock();
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PIString ret = cur_state.receive_speed;
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mutex_state.unlock();
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return ret;
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}
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PIString PIDiagnostics::sendSpeed() const {
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mutex_state.lock();
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PIString ret = cur_state.send_speed;
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mutex_state.unlock();
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return ret;
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}
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void PIDiagnostics::reset() {
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mutex_state.lock();
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cur_state = State();
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if (disconn_ != 0.) {
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int hist_size = history_rec.size();
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history_rec.clear();
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history_send.clear();
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history_rec.resize(hist_size);
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history_send.resize(hist_size);
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}
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mutex_state.unlock();
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}
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void PIDiagnostics::received(int size, bool correct) {
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mutex_state.lock();
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Entry & e(history_rec.front());
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if (correct) {
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e.cnt_ok++;
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e.bytes_ok += size;
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cur_state.received_packets++;
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cur_state.received_bytes += size;
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} else {
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e.cnt_fail++;
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e.bytes_fail += size;
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cur_state.received_packets_wrong++;
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cur_state.received_bytes_wrong += size;
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}
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e.empty = false;
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mutex_state.unlock();
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}
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void PIDiagnostics::sended(int size) {
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mutex_state.lock();
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Entry & e(history_send.front());
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e.cnt_ok++;
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e.bytes_ok += size;
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cur_state.sended_packets++;
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cur_state.sended_bytes += size;
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e.empty = false;
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mutex_state.unlock();
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}
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void PIDiagnostics::tick(void * , int ) {
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mutex_state.lock();
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//piCoutObj << "lock";
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int tcnt_recv = 0;
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int tcnt_send = 0;
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Entry send = calcHistory(history_send, tcnt_send);
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Entry recv = calcHistory(history_rec, tcnt_recv);
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float itr = disconn_ * (float(tcnt_recv) / history_rec.size());
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float its = disconn_ * (float(tcnt_send) / history_send.size());
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float hz = interval() / 1000.f;
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if (tcnt_recv == 0) {
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cur_state.integral_freq = cur_state.immediate_freq = 0;
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cur_state.received_packets_per_sec = cur_state.received_bytes_per_sec = 0;
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} else {
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cur_state.integral_freq = recv.cnt_ok / itr;
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cur_state.received_packets_per_sec = ullong(float(recv.cnt_ok) / itr);
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cur_state.received_bytes_per_sec = ullong(double(recv.bytes_ok) / itr);
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cur_state.immediate_freq = double(history_rec.front().cnt_ok) / hz;
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}
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if (tcnt_send == 0) {
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cur_state.sended_packets_per_sec = cur_state.sended_bytes_per_sec = 0;
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} else {
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cur_state.sended_packets_per_sec = ullong(float(send.cnt_ok) / its);
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cur_state.sended_bytes_per_sec = ullong(double(send.bytes_ok) / its);
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}
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//piCoutObj << "tick" << recv.cnt_ok << send.cnt_ok;
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cur_state.receive_speed = PIString::readableSize(cur_state.received_bytes_per_sec) + "/s";
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cur_state.send_speed = PIString::readableSize(cur_state.sended_bytes_per_sec) + "/s";
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int arc = recv.cnt_ok + recv.cnt_fail;
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float good_percents = 0.f;
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if (arc > 0) good_percents = (float)recv.cnt_ok / arc * 100.f;
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PIDiagnostics::Quality diag;
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if (tcnt_recv == 0) {
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diag = PIDiagnostics::Unknown;
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} else {
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if (good_percents == 0.f) diag = PIDiagnostics::Failure;
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else if (good_percents <= 20.f) diag = PIDiagnostics::Bad;
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else if (good_percents > 20.f && good_percents <= 80.f) diag = PIDiagnostics::Average;
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else diag = PIDiagnostics::Good;
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}
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if ((tcnt_send + tcnt_recv) != 0) {
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// piCoutObj << tcnt_recv << tcnt_send;
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history_rec.dequeue();
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history_send.dequeue();
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Entry e;
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e.empty = false;
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history_rec.enqueue(e);
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history_send.enqueue(e);
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}
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if (diag != cur_state.quality) {
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qualityChanged(diag, cur_state.quality);
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cur_state.quality = diag;
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}
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mutex_state.unlock();
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//piCoutObj << "unlock";
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}
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PIDiagnostics::Entry PIDiagnostics::calcHistory(PIQueue<Entry> & hist, int & cnt) {
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Entry e;
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cnt = 0;
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for (int i = 0; i < hist.size_s(); ++i) {
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e.bytes_ok += hist[i].bytes_ok;
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e.bytes_fail += hist[i].bytes_fail;
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e.cnt_ok += hist[i].cnt_ok;
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e.cnt_fail += hist[i].cnt_fail;
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if (!hist[i].empty) cnt++;
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}
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e.empty = false;
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// piCoutObj << hist.size() << cnt;
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return e;
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}
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void PIDiagnostics::propertyChanged(const char *) {
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float disct = property("disconnectTimeout").toFloat();
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changeDisconnectTimeout(disct);
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}
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void PIDiagnostics::changeDisconnectTimeout(float disct) {
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mutex_state.lock();
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disconn_ = piMaxf(disct, interval() / 1000.f);
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if (interval() > 0) {
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int hist_size = piClampi(int(disconn_ * 1000.f / float(interval())), 1, 65536);
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//piCoutObj << hist_size << interval();
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history_rec.resize(hist_size);
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history_send.resize(hist_size);
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} else {
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history_rec.resize(1);
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history_send.resize(1);
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}
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//piCoutObj << hist_size << disconn_ << interval();
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mutex_state.unlock();
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}
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