Class for real time, CPU time and CPU cycles measuring.
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#include <TNL/Timer.h>
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| Timer () |
| Basic constructor creating a new timer and resets it.
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double | getCPUTime () const |
| Returns the elapsed CPU time on this timer.
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double | getRealTime () const |
| Returns the elapsed real time on this timer.
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void | reset () |
| Reset the CPU and real-time timers.
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void | start () |
| Starts timer.
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void | stop () |
| Stops (pauses) the CPU and the real-time timers, but does not set them to zero.
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bool | writeLog (Logger &logger, int logLevel=0) const |
| Writes a record into the logger.
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using | Duration = typename std::chrono::high_resolution_clock::duration |
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using | TimePoint = typename std::chrono::high_resolution_clock::time_point |
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static double | durationToDouble (const Duration &duration) |
| Converts the real time into seconds as a floating point number.
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static double | readCPUTime () |
| Function for measuring the CPU time.
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static TimePoint | readRealTime () |
| Function for measuring the real time.
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double | initialCPUTime |
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TimePoint | initialRealTime |
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bool | stopState |
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double | totalCPUTime |
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Duration | totalRealTime |
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Class for real time, CPU time and CPU cycles measuring.
It measures the elapsed real time and CPU time (in seconds) elapsed on the timer. The timer can be paused by calling stop and start methods and reseted by calling reset.
- Example
#include <iostream>
#include <chrono>
#include <thread>
#include <TNL/Timer.h>
int
main()
{
const int milliseconds = 0.5e3;
time.start();
time.stop();
time.reset();
}
Class for real time, CPU time and CPU cycles measuring.
Definition Timer.h:25
- Output
Elapsed real time: 0.500117
Elapsed CPU time: 2.4e-05
Real time after reset:0
CPU time after reset: 0
◆ getCPUTime()
double TNL::Timer::getCPUTime |
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const |
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inlinenodiscard |
Returns the elapsed CPU time on this timer.
This method returns the CPU time (i.e. time the CPU spent by processing this process) elapsed so far (in seconds). This method can be called while the timer is running, there is no need to use stop method first.
◆ getRealTime()
double TNL::Timer::getRealTime |
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const |
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inlinenodiscard |
Returns the elapsed real time on this timer.
This method returns the real time elapsed so far (in seconds). This method can be called while the timer is running, there is no need to use stop method first.
◆ start()
void TNL::Timer::start |
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inline |
Starts timer.
Starts the CPU and real-time timers. This method can be used also after using the stop method. The timer then continues measuring the time without reseting.
◆ writeLog()
bool TNL::Timer::writeLog |
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Logger & | logger, |
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int | logLevel = 0 ) const |
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inline |
Writes a record into the logger.
- Parameters
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logger | Name of Logger object. |
logLevel | A non-negative integer recording the log record indent. |
- Example
#include <iostream>
#include <chrono>
#include <thread>
#include <TNL/Timer.h>
#include <TNL/Logger.h>
int
main()
{
const int milliseconds = 0.5e3;
time.start();
time.stop();
time.writeLog( logger, 0 );
}
Creates calculations log in the form of a table.
Definition Logger.h:15
- Output
| Real time: 0.500117 |
| CPU time: 3.3e-05 |
The documentation for this class was generated from the following files:
- src/TNL/Timer.h
- src/TNL/Timer.hpp