C++ TimePoint类代码示例

TEST(EventBaseTest, RunInThread) {
  uint32_t numThreads = 50;
  uint32_t opsPerThread = 100;
  RunInThreadData data(numThreads, opsPerThread);

  deque<std::thread> threads;
  for (uint32_t i = 0; i < numThreads; ++i) {
    threads.emplace_back([i, &data] {
        for (int n = 0; n < data.opsPerThread; ++n) {
          RunInThreadArg* arg = new RunInThreadArg(&data, i, n);
          data.evb.runInEventBaseThread(runInThreadTestFunc, arg);
          usleep(10);
        }
      });
  }

  // Add a timeout event to run after 3 seconds.
  // Otherwise loop() will return immediately since there are no events to run.
  // Once the last thread exits, it will stop the loop().  However, this
  // timeout also stops the loop in case there is a bug performing the normal
  // stop.
  data.evb.tryRunAfterDelay(std::bind(&EventBase::terminateLoopSoon, &data.evb),
                         3000);

  TimePoint start;
  data.evb.loop();
  TimePoint end;

  // Verify that the loop exited because all threads finished and requested it
  // to stop.  This should happen much sooner than the 3 second timeout.
  // Assert that it happens in under a second.  (This is still tons of extra
  // padding.)

  auto timeTaken = std::chrono::duration_cast<milliseconds>(
    end.getTime() - start.getTime());
  ASSERT_LT(timeTaken.count(), 1000);
  VLOG(11) << "Time taken: " << timeTaken.count();

  // Verify that we have all of the events from every thread
  int expectedValues[numThreads];
  for (uint32_t n = 0; n < numThreads; ++n) {
    expectedValues[n] = 0;
  }
  for (deque< pair<int, int> >::const_iterator it = data.values.begin();
       it != data.values.end();
       ++it) {
    int threadID = it->first;
    int value = it->second;
    ASSERT_EQ(expectedValues[threadID], value);
    ++expectedValues[threadID];
  }
  for (uint32_t n = 0; n < numThreads; ++n) {
    ASSERT_EQ(expectedValues[n], opsPerThread);
  }

  // Wait on all of the threads.
  for (auto& thread: threads) {
    thread.join();
  }
}

// instanciate and play with gates
TEST(ALibxx, ChronoTest){

    using namespace Davix::Chrono;

    TimePoint pp;
    ASSERT_EQ(0, pp.toTimestamp());

    pp = Clock(Clock::Monolitic).now();
    TimePoint copy_time = pp;
    ASSERT_EQ(pp, copy_time);
    copy_time = copy_time + Duration(5);
    ASSERT_NE(copy_time, pp);
    ASSERT_EQ(copy_time, pp + Duration(5));
    ASSERT_GE(copy_time, pp);
    ASSERT_GE(copy_time, pp + Duration(5));
    ASSERT_GT(copy_time, pp);
    ASSERT_LE(copy_time, pp + Duration(5));
    ASSERT_LE(copy_time, pp + Duration(10));
    ASSERT_LT(copy_time, pp + Duration(10));

    ASSERT_EQ(copy_time + Duration(5), pp + Duration(10));

    copy_time = pp;
    ASSERT_EQ(copy_time, pp + Duration(10) - Duration(20) + Duration(10));

    TimePoint dd;
    ASSERT_ANY_THROW(
                 Duration res = dd - pp;
                );

// Print the spatial entities corresponding to the given time point and of the requested type
void printSpatialEntities(TimePoint &timePoint, const SubsetSpecificType &spatialEntityType) {
    for (auto it = timePoint.getSpatialEntitiesBeginIterator(spatialEntityType);
         it != timePoint.getSpatialEntitiesEndIterator(spatialEntityType); it++) {
        std::cout << "\t SpatialEntity" << std::endl;

        std::cout << (*(*it)).toString() << std::endl;
    }
}

void
SpatialTemporalDataReader::setTimePointValue(const pt::ptree &timePointTree, TimePoint &timePoint) {
    double timePointValue;

    if (timePointHasValue(timePointTree, timePointValue)) {
        timePoint.setValue(timePointValue);
    } else {
        timePoint.setValue(std::numeric_limits<double>::max());
    }
}

void TimeLine::addPoint(ofPoint _pos){
    
    if ( (startTime == -1) || (points.size() == 0) ){
        startTime = ofGetElapsedTimef();
    } 
    
    TimePoint newPoint;
    newPoint.set(_pos);
    newPoint.time = ofGetElapsedTimef() - startTime;
    
    points.push_back( newPoint );
}

int TimePoint::getTimeDiffInMinute(const TimePoint &another) const
{
    int diff = convertToMinute() - another.convertToMinute();
    if(diff < 0)
        diff = -diff;
    return diff;
}

//---------------------------------------------------------------------------
void getMeanAndStdErrorEndPoint(const std::vector<TimeSeries>& timeSeries, TimePoint& mean, TimePoint& stdError)
{
    assert(mean.isNull()==true);
    assert(stdError.isNull()==true);

    //Only set: biasA, biasB, fractionMixedPairs

    const unsigned int nTimeSeries = timeSeries.size();
    for (unsigned i=0; i<nTimeSeries; ++i)
    {
        //Get the index of the final index
        const unsigned int time = timeSeries[i].timePoints.size() - 1;
        mean += timeSeries[i].timePoints[time];
    }
    mean/=nTimeSeries;
}

    inline void setAnimationTime(const TimePoint& timePoint) {
        if (mode == MapMode::Still) {
            return;
        }

        animationTime = timePoint.time_since_epoch();
    };

static inline int32 timeSeed()
{
	using namespace chrono;
	static int32 count = 0;

	typedef high_resolution_clock::time_point TimePoint;

	typedef TimePoint::duration Duration;

	TimePoint now = high_resolution_clock::now();
	Duration sinceEpoch = now.time_since_epoch();
	seconds secs = duration_cast<seconds>(sinceEpoch);

	nanoseconds nsecs = sinceEpoch - secs;

	return (int32)secs.count() ^ (int32)nsecs.count() ^ count--;
}

// Print the given time point
void printTimePoint(TimePoint &timePoint) {
    std::cout << "Time point " << timePoint.getValue() << std::endl;

    for (std::size_t i = 0; i < NR_SUBSET_SPECIFIC_TYPES; i++) {
        std::cout << "Subset specific type " << i << ": " << std::endl;

        printSpatialEntities(timePoint, subsetspecific::computeSubsetSpecificType(i));
    }
}

const synfig::Node::time_set	& ValueNode_DynamicList::ListEntry::get_times() const
{
	synfig::ActivepointList::const_iterator 	j = timing_info.begin(),
											end = timing_info.end();

	//must remerge with all the other values because we don't know if we've changed...
	times = value_node->get_times();

	for(; j != end; ++j)
	{
		TimePoint t;
		t.set_time(j->get_time());
		t.set_guid(j->get_guid());

		times.insert(t);
	}

	return times;
}

static inline int64 OSCTime(TimePoint const & tp)
{
	using namespace chrono;
	typedef typename TimePoint::duration Duration;
	Duration sinceEpoch = tp.time_since_epoch();
	seconds secs = duration_cast<seconds>(sinceEpoch);

	nanoseconds nsecs = sinceEpoch - secs;

	return ((int64)(secs.count() + kSECONDS_FROM_1900_to_1970) << 32)
			+ (int64)(nsecs.count() * kNanosToOSCunits);
}

void
SpatialTemporalDataReader::addSpatialEntityToTimePoint(const pt::ptree &spatialEntityTree,
                                                       TimePoint &timePoint) {
    std::shared_ptr<SpatialEntity>  spatialEntity;
    SubsetSpecificType              spatialEntityType;

    createDerivedSpatialEntity(spatialEntityTree, spatialEntity, spatialEntityType);
    setSpatialEntityScaleAndSubsystem(spatialEntityTree, spatialEntity);
    setSpatialEntityMeasureValues(spatialEntityTree, spatialEntity);

    timePoint.addSpatialEntityAndType(spatialEntity, spatialEntityType);
}

void TemporalDataReader::addNumericStateVariablesToTimePoint(const std::vector<std::string> &lineTokens,
                                                             TimePoint &timePoint) {
    std::size_t nrOfTokens = lineTokens.size();

    for (std::size_t i = 1; i < nrOfTokens; i++) {
        double observableVariableValue = StringManipulator::convert<double>(lineTokens[i]);

        timePoint.addNumericStateVariable(
            numericStateVariableIds[i],
            observableVariableValue
        );
    }
}

jobject mdr::JniStationPrediction::createJniStationPrediction(JNIEnv *env,
                                                              TimePoint timePoint,
                                                              float value,
                                                              std::string timeZone) {
    auto duration = timePoint.time_since_epoch();
    auto epoch = std::chrono::duration_cast<std::chrono::milliseconds>(duration).count();
    jlong jniEpoch = static_cast<jlong>(epoch);
    jobject jniValue = mdr::JniFloat::toJni(env, value);
    jstring tz = mdr::JniString::toJni(env, timeZone);
    auto retVal = env->CallStaticObjectMethod(stationPredictionFactoryClass, factoryCtor, jniEpoch,
                                              tz, jniValue);
    mdr::Jni::checkException(env, true);
    return retVal;
}