org.bytedeco.opencv.opencv_core

Class TickMeter

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.opencv.opencv_core.TickMeter

All Implemented Interfaces:

AutoCloseable

@Namespace(value="cv")
 @NoOffset
 @Properties(inherit=opencv_core.class)
public class TickMeter
extends Pointer

\brief a Class to measure passing time.

The class computes passing time by counting the number of ticks per second. That is, the following code computes the execution time in seconds:

TickMeter tm;
tm.start();
// do something ...
tm.stop();
std::cout << tm.getTimeSec();

It is also possible to compute the average time over multiple runs:

TickMeter tm;
for (int i = 0; i < 100; i++)
{
    tm.start();
    // do something ...
    tm.stop();
}
double average_time = tm.getTimeSec() / tm.getCounter();
std::cout << "Average time in second per iteration is: " << average_time << std::endl;

See Also:

getTickCount, getTickFrequency

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer

Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.NativeDeallocator, Pointer.ReferenceCounter

Field Summary

Fields inherited from class org.bytedeco.javacpp.Pointer

address, capacity, limit, position

Constructor Summary

Constructors

Constructor and Description
TickMeter() the default constructor
TickMeter(long size) Native array allocator.
TickMeter(Pointer p) Pointer cast constructor.

Method Summary

Modifier and Type	Method and Description
long	getCounter() returns internal counter value.
double	getTimeMicro() returns passed time in microseconds.
double	getTimeMilli() returns passed time in milliseconds.
double	getTimeSec() returns passed time in seconds.
long	getTimeTicks() returns counted ticks.
TickMeter	position(long position)
void	reset() resets internal values.
void	start() starts counting ticks.
void	stop() stops counting ticks.

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asBuffer, asByteBuffer, availablePhysicalBytes, calloc, capacity, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, formatBytes, free, hashCode, isNull, isNull, limit, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetof, parseBytes, physicalBytes, position, put, realloc, referenceCount, releaseReference, retainReference, setNull, sizeof, toString, totalBytes, totalPhysicalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

TickMeter

public TickMeter(Pointer p)

Pointer cast constructor. Invokes Pointer.Pointer(Pointer).

TickMeter

public TickMeter(long size)

Native array allocator. Access with Pointer.position(long).

TickMeter

public TickMeter()

the default constructor

Method Detail

position

public TickMeter position(long position)

Overrides:

position in class Pointer

start

public void start()

starts counting ticks.

stop

public void stop()

stops counting ticks.

getTimeTicks

@Cast(value="int64")
public long getTimeTicks()

returns counted ticks.

getTimeMicro

public double getTimeMicro()

returns passed time in microseconds.

getTimeMilli

public double getTimeMilli()

returns passed time in milliseconds.

getTimeSec

public double getTimeSec()

returns passed time in seconds.

getCounter

@Cast(value="int64")
public long getCounter()

returns internal counter value.

reset

public void reset()

resets internal values.