git-svn-id: svn://db.shs.com.ru/pip@4 12ceb7fc-bf1f-11e4-8940-5bc7170c53b5
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106
utils/system_test/main.cpp
Executable file
106
utils/system_test/main.cpp
Executable file
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/*
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PIP - Platform Independent Primitives
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System tests program
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Copyright (C) 2014 Ivan Pelipenko peri4ko@gmail.com
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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 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 General Public License for more details.
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You should have received a copy of the GNU 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 "pip.h"
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#include "pisystemtests.h"
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int main(int argc, char * argv[]) {
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#ifdef WINDOWS
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cout << "This program is useless for Windows" << endl;
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return 0;
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#else
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if (getuid() != 0) {
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cout << "You should run this program as root!" << endl;
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return 0;
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}
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PIConfig conf(
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#ifndef WINDOWS
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"/etc/pip.conf"
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#else
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"pip.conf"
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#endif
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);
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PITimeMeasurer timer, tm;
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timespec ts;
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long stc = 0;
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double st;
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llong sts = 0;
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clock_getres(CLOCK_REALTIME, &ts);
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stc = long(ts.tv_sec) * 1000000000l + long(ts.tv_nsec);
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conf.setValue("time_resolution_ns", stc);
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cout << "Timer resolution is " << stc << " ns" << endl;
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cout << "\"PITimer.elapsed_*\" test ... " << flush;
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stc = 0;
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ts.tv_sec = 0;
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ts.tv_nsec = 1000;
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PIVector<double> times;
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times.resize(8192);
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tm.reset();
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PISystemTests::time_elapsed_ns = 0;
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while (tm.elapsed_s() < 3.) {
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for (int i = 0; i < times.size_s(); ++i) {
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timer.reset();
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times[i] = timer.elapsed_m();
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times[i] = timer.elapsed_s();
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times[i] = timer.elapsed_u();
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}
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st = 0;
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for (int i = 0; i < times.size_s(); ++i)
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st += times[i];
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//cout << times[0] << endl;
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//cout << st / times.size_s() / 3. * 1000. << endl;
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sts += piRoundd(st / times.size_s() / 3. * 1000.);
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//cout << sts << endl;
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stc++;
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}
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sts /= stc;
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conf.setValue("time_elapsed_ns", long(sts));
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cout << "ok, cost " << sts << " ns, average in " << stc << " series (" << (stc * 3 * times.size_s()) << " executes)" << endl;
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cout << "\"usleep\" offset test ... " << flush;
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PISystemTests::time_elapsed_ns = sts;
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tm.reset();
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stc = 0;
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sts = 0;
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times.resize(128);
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while (tm.elapsed_s() < 3.) {
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for (int i = 0; i < times.size_s(); ++i) {
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timer.reset();
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usleep(1000);
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times[i] = timer.elapsed_u();
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}
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st = 0;
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for (int i = 0; i < times.size_s(); ++i)
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st += times[i] - 1000;
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//cout << times[0] << endl;
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//cout << st / times.size_s() / 3. * 1000. << endl;
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sts += piRoundd(st / times.size_s());
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//cout << sts << endl;
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stc++;
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}
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sts /= stc;
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conf.setValue("usleep_offset_us", long(sts));
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cout << "ok, " << sts << " us, average in " << stc << " series (" << (stc * times.size_s()) << " executes)" << endl;
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//WAIT_FOR_EXIT
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return 0;
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#endif
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};
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