On Windows, clock() returns the time in milliseconds, but on this Linux box I'm working on, it rounds it to the nearest 1000 so the precision is only to the "second" level and not to the milliseconds level. I found a solution with Qt using the QTime clas...

I wish to calculate the time it took for an API to return a value. The time taken for such an action is in the space of nano seconds. As the API is a C++ class/function, I am using the timer.h to caculate the same: #include <ctime> #include &lt...

I wish to calculate the time it took for an API to return a value. The time taken for such an action is in the space of nano seconds. As the API is a C++ class/function, I am using the timer.h to caculate the same: #include <ctime> #include &lt...

Under Windows there are some handy functions like QueryPerformanceCounter from mmsystem.h to create a high resolution timer. Is there something similar for Linux?

I'm looking to implement a simple timer mechanism in C++. The code should work in Windows and Linux. The resolution should be as precise as possible (at least millisecond accuracy). This will be used to simply track the passage of time, not to implement a...

I am using boost 1.46 which does not include boost::timer, What other way can I time my functions. I am currently doing this: time_t now = time(0); <some stuff> time_t after = time(0); cout << after - now << endl; but it just gives...

I recently decided that I needed to change from using milliseconds to microseconds for my Timer class, and after some research I've decided that QueryPerformanceCounter is probably my safest bet. (The warning on Boost::Posix that it may not works on Win32...

I'm trying to use chrono library for timers and durations. I want to be able to have a Duration frameStart; ( from app start ) and a Duration frameDelta; ( time between frames ) I need to be able to get the frameDelta duration as milliseconds and float ...

On the Atmel ATmega328P (datasheet), there are three timers available for PWM generation (timer0, timer1, and timer2). I already have what I need using the 8-bit timer2, I am just concerned with using different timer instad of timer2, because timer2 is u...

Is it safe to stop Qt's timer in it's "timeout" signal/slot function? Can't seem to find any information in Qt documentation about the QTimer. I have created a timer that is periodically sending a "keep alive" messages to the server. I want this timer to...

I am trying to start a QTimer in a specific thread. However, the timer does not seem to execute and nothing is printing out. Is it something to do with the timer, the slot or the thread? main.cpp #include "MyThread.h" #include <iostream> ...

I am trying to start a QTimer in a specific thread. However, the timer does not seem to execute and nothing is printing out. Is it something to do with the timer, the slot or the thread? main.cpp #include "MyThread.h" #include <iostream> ...

I'm trying to achieve that with an Arduino Uno board (ATmega328, 16 MHz). So I searched through the Internet and came up with something like this: unsigned long Time=0; int main (void) { Serial.begin(9600); cli(); TCCR1A = 0; TCCR1B = 0; ...

A timer in Arduino seems to run faster when using classes. But in a C version (with the same values), it works as expected. I coded a quick and dirty version for a NEC infrared protocol decoder on Arduino UNO (kind of plain C, no classes). It worked. I ...

I know that the Arduino has three timers (timer0, timer1, timer2) and one is 16bit and the other is 8 bit but i am not sure how to use them and if possible can i use all three in the same project with each one having different time intervals that should n...

#include <iostream> #include <conio.h> #include <ctime> using namespace std; double diffclock(clock_t clock1,clock_t clock2) { double diffticks=clock1-clock2; double diffms=(diffticks)/(CLOCKS_PER_SEC/1000); return diffms...

Probably the title question is not very explicit. I am using Qt5 on Windows7. In a thread (QThread) at some point, in the "process()" function/method, I must wait for the "encrypted()" SIGNAL belonging to a QSslSocket I am using in this thread. Also I su...

Probably the title question is not very explicit. I am using Qt5 on Windows7. In a thread (QThread) at some point, in the "process()" function/method, I must wait for the "encrypted()" SIGNAL belonging to a QSslSocket I am using in this thread. Also I su...

When I create a QTimer object in Qt 5, and start it using the start() member function, is a separate thread created that keeps track of the time and calls the timeout() function at regular intervals? For example, QTimer *timer = new QTimer; timer-&g...