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/*----------------------------------------------------------------------
Test program for edm::TypeIDBase class.
----------------------------------------------------------------------*/
#include <cassert>
#include <iostream>
#include <string>
#include <unistd.h>
#include <sys/resource.h>
#include <catch.hpp>
#include "FWCore/Utilities/interface/CPUTimer.h"
using std::cerr;
using std::endl;
TEST_CASE("CPUTimer", "[CPUTimer]") {
SECTION("testTiming") {
edm::CPUTimer timer;
REQUIRE(timer.realTime() == 0.0);
REQUIRE(timer.cpuTime() == 0.0);
timer.start();
sleep(2);
timer.stop();
if ((timer.realTime() <= 2.0) || (timer.cpuTime() + 2.0 - 0.02 > timer.realTime())) {
std::cerr << "real " << timer.realTime() << " cpu " << timer.cpuTime() << std::endl;
}
REQUIRE(timer.realTime() > 2.0);
REQUIRE(timer.cpuTime() + 2.0 - 0.02 <= timer.realTime());
timer.start();
sleep(2);
if (timer.realTime() <= 4.0) {
std::cerr << "real " << timer.realTime() << " cpu " << timer.cpuTime() << std::endl;
}
REQUIRE(timer.realTime() > 4.0);
timer.start();
REQUIRE(timer.realTime() > 4.0);
sleep(2);
timer.stop();
double real = timer.realTime();
double cpu = timer.cpuTime();
timer.stop();
REQUIRE(timer.realTime() == real);
REQUIRE(timer.cpuTime() == cpu);
timer.reset();
REQUIRE(timer.realTime() == 0.0);
REQUIRE(timer.cpuTime() == 0.0);
rusage theUsage;
getrusage(RUSAGE_SELF, &theUsage);
struct timeval startTime;
startTime.tv_sec = theUsage.ru_utime.tv_sec;
startTime.tv_usec = theUsage.ru_utime.tv_usec;
timer.start();
struct timeval nowTime;
do {
rusage theUsage2;
getrusage(RUSAGE_SELF, &theUsage2);
nowTime.tv_sec = theUsage2.ru_utime.tv_sec;
nowTime.tv_usec = theUsage2.ru_utime.tv_usec;
} while (nowTime.tv_sec - startTime.tv_sec + 1E-6 * (nowTime.tv_usec - startTime.tv_usec) < 1);
timer.stop();
if ((timer.realTime() < 1.0) || (timer.cpuTime() < 1.0)) {
std::cerr << "real " << timer.realTime() << " cpu " << timer.cpuTime() << std::endl;
}
REQUIRE(timer.realTime() >= 1.0);
REQUIRE(timer.cpuTime() >= 1.0);
}
}
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