clock

Getting the Timing of a Specific Part of Code in a Loop in C

由 会有一股神秘感。 提交于 2019-12-12 10:25:37
问题 Description of Problem Below I have a program that is performing two simple addition and multiplication operations. I am then storing the sum of these two simple operations in two respective variables called total1 and total2. In terms of computation total2 will take more time to be fully executed. The way I implemented the code, I am currently timing the entire simulation of both mathematical operations. Question Is it possible to time solely the end result of total1 and total 2 separately?

How to make a C timer expire at a particular system time in Linux

由 一笑奈何 提交于 2019-12-12 09:49:34
问题 I was trying to create a timer that depends on the system clock. That means when the system time changes it should affect the expiry of this timer too. So I thought, creating a timer based on CLOCK_REALTIME should do the trick. But when this timer is armed to expire after 60 sec and when I advanced the system clock by 32 sec (using date command), the timer expired exactly after 60 sec. It didn't expire 32 sec earlier. So I calculated the time elapsed for CLOCK_REALTIME and CLOCK_MONOTONIC

VHDL: creating a very slow clock pulse based on a very fast clock

由 时光怂恿深爱的人放手 提交于 2019-12-12 07:16:13
问题 (I'd post this in EE but it seems there are far more VHDL questions here...) Background: I'm using the Xilinx Spartan-6LX9 FPGA with the Xilinx ISE 14.4 (webpack). I stumbled upon the dreaded "PhysDesignRules:372 - Gated clock" warning today, and I see there's a LOT of discussion out there concerning that in general. The consensus seems to be to use one of the DCMs on the FPGA to do clock division but... my DCM doesn't appear to be capable of going from 32 MHz to 4.096 KHz (per the wizard it

Add MIDI Events to Clock - Java

由 和自甴很熟 提交于 2019-12-12 04:59:54
问题 I am creating a simple MIDI application in C# with an open source library that allows the user to specify a channel, pitch and velocity and add them to a Clock. This clock can then play all the notes in the sequence that they were added. Everything works great and now I am in the process of creating a Java version of the application, the only trouble I seem to be having is that I can't find any simple tutorial or explanation of how the clock system works within MIDI Java. Does the Clock exist

Simple Clock in Meteor.js or how to reload Templates?

由 冷暖自知 提交于 2019-12-12 03:46:03
问题 Hey guys I#m trying with Templates in meteor.js, but how can I reload them after a given time? , for example i want to have a Template called "time" wich has to reload every second to show the current time, also a template "date" wich has to reload every minute, because evry minute the date can change, or an calendar wich has to reload the .ics every 5 minute or so, to be always accurate. my current code looks like that: <body> <!-- TOP --> <div class="top left">{{> time }}</div> <div class=

How to use seconds (time) in C program as a counter?

由 99封情书 提交于 2019-12-12 00:35:12
问题 I am trying to get a C program to use "seconds" from clock_t as a for loop counter. How is it possible? Below is my coding which is not working, #include<stdio.h> #include <time.h> int main() { clock_t begin, end; double time_spent; begin = clock(); time_spent = (double)begin / CLOCKS_PER_SEC; for(time_spent=0.0; time_spent<62000.0; time_spent++) { printf("hello \n"); if(time_spent==5.0) break; } end = clock(); time_spent = (double)(end - begin) / CLOCKS_PER_SEC; printf(" %lf\n", time_spent);

Unexpected output of (Python) time.clock()

由 岁酱吖の 提交于 2019-12-11 23:28:35
问题 Having some trouble understanding the output from time.clock(): Linux 3.5.0-17-generic #28-Ubuntu SMP Tue Oct 9 19:31:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux Distributor ID: LinuxMint Description: Linux Mint 14 Nadia Release: 14 Codename: nadia Python 2.7.3 (default, Sep 26 2012, 21:51:14) [GCC 4.7.2] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> from time import clock, sleep, time >>> while True: sleep(1); print clock() ... 0.03 0.03 0.03 0.03 0.03

Digital clock not displaying

由 给你一囗甜甜゛ 提交于 2019-12-11 20:23:52
问题 This is really confusing me. All im trying to do is create a digital clock on a windows form, so i googled and tried this code but it refuses to show in the label. private void timer1_Tick(object sender, EventArgs e) { label1.Text = DateTime.Now.ToString("HH:mm:ss"); } What am i doing wrong? Thanks for all the help in advance 回答1: You need to set timer1.Interval to a reasonable value, like 1000. You also need to set timer1.Enabled = true; Finally you need to make sure your event handler

software Interrupt Service routine in C for windows operating system

由 故事扮演 提交于 2019-12-11 19:55:58
问题 #include <stdio.h> #include <time.h> #include <windows.h> void Task() { printf("Hi"); } int main ( ) { time_t t; clock_t start, end; long i; long count; double x = 0.0; count = 2; start = clock(); time(&t); printf(ctime(&t)); printf( "Counting to %ld\n", count ); if(count) { Task(); } end = clock(); printf( "That took %f seconds and I counted up to %ld", (((double)(end-start)/CLOCKS_PER_SEC)), count ); printf( "\nThat also took %d clock tics\n ", clock()); return 0; } I want to get the start

std::chrono doesn't seem to be giving accurate clock resolution/frequency

由 岁酱吖の 提交于 2019-12-11 16:56:36
问题 I've been reading up about this, and the numbers don't add up. On my operating system (Windows), I can check the resolution of the system clock like this: LARGE_INTEGER largeInt; // Basically a struct/union containing a long long QueryPerformanceFrequency(&largeInt); // largeInt now holds the frequency of my system's clock, it's 3903987 // This ends up being a resolution of about 256 nanoseconds All is good, but now I want to use std::chrono to check the same details. According to
订阅 clock