How to get elapsed time?
I am writting in c++ and i want to know how much time has elapsed while executing some part of code. In windows I would use GetTickCount() like this:
time=GetTickCount();
//some code
time=GetTickCount()-time;
printf("Time elapsed: %d",time);
What function can I use in linux? The function doesn't have to be portable but it must have at least millisecond resolution.
thx! even better than I needed .
Similar Messages
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How to get elapsed time in case struture?
I'm trying to get Elapsed Time VI to work but couldn't figure out how to use it properly.
I have a subVI with state machine structure to decode data stream from serial port.
State1 uses VISA read to read a byte and check if it is the Start of Frame. If TRUE, goes to State2. If FALSE, loop back to State1 and try again.
If the State1 keeps getting FALSE for certain time (e.g. 5 seconds), stop the subVI and insert custom error code.
So I have to calculate the elapsed time since State1 starts to be FALSE and keeps to be FALSE.
I tried to use Elapsed Time VI but have problem of understanding it well.
Is there any other better solution than using Elapsed Time VI? Also, how long is the execution time of Elapsed Time VI?
Any suggestion will be very much appreciated.Hi,
The Boolean output (Time Elapsed) in Elapse Time VI should give True when time got elapsed.
Else we can simulate using "Tick Count (ms)", which counts the ticks in milisecond. You can move on to state 2 when count reaches to reauired duration.
We can give you better idea if you post the code VI.
Regards
Haneef -
How to get elapsed time of the query in form 6i
hi
I used to use " set timing on " in sql to get the elapsed time
set timing on
elapsed time :XX:XX:XX ,
but i dont know how to get it in fom
its really imporant to measure the time elapsed for me cuz i am student an need to get the time
thanx alotregarding to point 1 : u know there are three modes for system ; query, enter_qeury,and normal. when the system is not noraml so it is either query or enter_query , and both are query processing ( as i think) so it the elapsed time . it also by using timer stpos when system finish query ( normal)
why you dont prefer timers ..... ( it important please to explain )
thank you very much Navnit Punj
Edited by: user8652693 on 22/07/2009 07:33 ص -
How to get elapsed time from start of current day
Hello,
I've tried to use the DateDiff function to calculate the elapsed time, starting from 00:00:00:000 (Midnight of current day), but I'm getting hung up on how to inform the function of what date values it should use. I could parse off the time section
of the
GetDate() function, but that doesn't seems a little klunky to me.
So, what I'm trying to capture is this (pseudo code):
Elapsed Time (int) = Select DateDiff(seconds, Current Day.Midnight, CurrentDay.CurrentSecond)
Any help is greatly appreciated.
CapHello,
So something like this? You can change it around, I used variables so you can see and check (and play with) the values.
DECLARE @CurDay DATE = GETDATE()
Declare @SecondsToDate INT
SELECT @SecondsToDate = DATEDIFF(SECOND, @CurDay, GETDATE())
SELECT @SecondsToDate AS SecondsPastMidnight
-- do the check
SELECT DATEADD(SECOND, @SecondsToDate, CAST(@CurDay AS DATETIME))
Sean Gallardy | Blog | Microsoft Certified Master -
How to calculate elapsed time based on user input
I'm not sure what to do next in this program. Basically, I'm not sure exactly how to get the time to output accurately, as in what forumla I should be using.
This is the question:
What comes 13 hours after 4 o'clock? Create an ElaspedTimeCalculator application that prompts the user for a starting hour, whether it is am or pm, and the number of elapsed hours. The application then displays the time after that many hours have passed. Application output should look similar to:
Enter the starting hour: 7
Enter am or pm: pm
Enter the number of elapsed hours: 10
The time is: 5:00 amHere's the code I have so far:
import java.util.Scanner;
public class ElapsedTimeCalculator
public static void main(String[] args)
int starting_hour;
int starting_minutes; /*This is added in case the user wants to add minutes as well.*/
String am_or_pm;
int elapsed_hours;
int elasped_minutes;
int time_hours;
int time_minutes;
System.out.println("Welcome. This application will give you the time based on your input.");
System.out.println(" ");
Scanner input = new Scanner(System.in);
System.out.print("Enter the starting hour: ");
starting_hour = input.nextDouble();
System.out.print("Enter the starting minutes: ");
starting_minutes = input.nextDouble();
System.out.print("Enter either 'am' or pm': ");
am_or_pm = input.nextString();
System.out.print("Enter the number of elapsed hours: ");
elapsed_hours = input.nextDouble();
input.close();
time_hours =
time_minutes =
if(am_or_pm = "am" || am_or_pm = "a.m." || am_or_pm = "AM" || am_or_pm = "A.M.")
System.out.println("The time is " + time_hours + ":" + time_minutes + "am");
if(am_or_pm = "pm" || am_or_pm = "p.m." || am_or_pm = "PM" || am_or_pm = "P.M.")
System.out.println("The time is " + time_hours + ":" + time_minutes + "pm");
}To calculate time_hours should I just calculate this by adding the elapsed hour to the starting hour? I doubt it will be accurate for all situations.
Same for the time_minutes For example, if the starting minutes and the elapsed minutes were 50, it would be greater than 60. Also, not sure if it makes sense to separate hours and minutes like this, it's not required to in the question. I initally thought it would be easier to approach like this instead of allowing the user to input a double for the starting hour. ex. 5.7
I get the feeling that this is extremely simple, but nonetheless, I'm stuck, so any help would be appreciated.Well thanks to both of you. I did a little reading up on the modulus operator and coupled it with some logic (although, truthfully, I'm not really using to there actually being an application for the remainder of a division operation, since it's never really used very much in any of my Math courses) and the hours portion works perfectly now:
import java.util.Scanner;
public class ElapsedTimeCalculator
public static void main(String[] args)
int starting_hour;
//int starting_minutes; /*This is added in case the user wants to add minutes as well.*/
String am_or_pm;
int elapsed_hours;
//int elasped_minutes;
System.out.println("Welcome. This application will give you the time based on your input.");
System.out.println(" ");
Scanner input = new Scanner(System.in);
System.out.print("Enter the starting hour: ");
starting_hour = input.nextInt();
//System.out.print("Enter the starting minutes: ");
//starting_minutes = input.nextInt();
System.out.print("Enter either 'am' or pm': ");
am_or_pm = input.next();
System.out.print("Enter the number of elapsed hours: ");
elapsed_hours = input.nextInt();
input.close();
int time_hours = 0;
//int time_minutes;
String meridien;
if(am_or_pm.equals("am"))
time_hours = (starting_hour + elapsed_hours) % 24;
//time_minutes = (starting_minutes + elapsed_minutes) % 60;
else if(am_or_pm.equals("am"))
time_hours = (starting_hour + elapsed_hours) % 24;
//time_minutes = (starting_minutes + elapsed_minutes) % 60;
else if(am_or_pm.equals("AM"))
time_hours = (starting_hour + elapsed_hours) % 24;
//time_minutes = (starting_minutes + elapsed_minutes) % 60;
else if(am_or_pm.equals("A.M."))
time_hours = (starting_hour + elapsed_hours) % 24;
//time_minutes = (starting_minutes + elapsed_minutes) % 60;
else if(am_or_pm.equals("pm"))
time_hours = (starting_hour + elapsed_hours + 12) % 24;
//time_minutes = (starting_minutes + elapsed_minutes) % 60;
else if(am_or_pm.equals("p.m."))
time_hours = (starting_hour + elapsed_hours + 12) % 24;
//time_minutes = (starting_minutes + elapsed_minutes) % 60;
else if(am_or_pm.equals("PM"))
time_hours = (starting_hour + elapsed_hours + 12) % 24;
//time_minutes = (starting_minutes + elapsed_minutes) % 60;
else if(am_or_pm.equals("P.M."))
time_hours = (starting_hour + elapsed_hours + 12) % 24;
//time_minutes = (starting_minutes + elapsed_minutes) % 60;
if(time_hours < 12)
meridien = "A.M.";
System.out.println("The time is: " + time_hours + ":00 " + meridien);
else if(time_hours > 12)
meridien = "P.M.";
System.out.println("The time is: " + time_hours + ":00 " + meridien);
}Now the only thing is the minutes. My teacher did say she wants the user to have the option to input minutes also if he/she desires, so I do need it. However, the only problem is that if say the user inputs a "starting minute" of 14 for example, and 66 minutes elapsing, then (14 + 66) int/ 60 = 1r20 but using the modulus operator would only give me 20. So how will I be able to add any extra hours if it is necessary? -
How to get current time and date??
How to get current time and date from my PC time and date to the java application??
i use java.util.* package but got error, that is:
- java.util.* and java.sql.* class are match
- abstract class cannot be instantiated
so what can i do, pls guide...thanks...There is a method in the System class that will return the current system time. You could also instantiate a Date, Time, Timestamp, or Calendar object, all of which get created with the system time by default.
Don't import *. Import the specific classes you need.
Next time, post the actual text of the exceptions/compile errors. If you make people guess, most just won't bother. -
How to get server time in Oracle Internet Directory (OID)?
Hi,
How to get current time on OID server? As in case AD, RootDSE contains currentTime attribute, Is there any attribute in OID through which I can get current time on server.
Thanks in advance for any help.
Regards,
UmeshHi,
wrong forum, use Identity Manager
Frank -
How to get a time from a NTP server in ActionScript 3 ?
Dear All,
I need your advice, how to get the time from NTP Server , I tried to do this, but I don't.
Thanks
Omar Mahmoudyou must use a server-side language supported by your server. php is a commonly supported language on most servers.
php tutorials can be found via google or any other search engine. -
Hi all,
I have problem how to get duration time between 2 date time (calendar):
example :
Calendar startDateTime
Calendar stopDateTime
how to get :
???? duration = stopDateTime - startDateTime
Thanks beforeCalendar one = new GregorianCalendar();
Thread.currentThread().sleep( 1000 );
Calendar two = new GregorianCalendar();
long time = two.getTimeInMillis() - one.getTimeInMillis();
System.out.println( "Hrs " + Math.round( time / ( 1000 * 60 * 12 ) ) );
System.out.println( "Mins " + Math.round( time / ( 1000 * 60 ) ) );
System.out.println( "Secs " + Math.round( time / 1000 ) );
System.out.println( "MSecs " + time ); -
How to get the time interveral for each status of worklow (wating,Inprocess
Hi Friends,
I have requreiemnt to get the time interval for each status of workflow.
ex.
status
workflow id | startd date | enddate | waiting | Inprocessing|Error|......
1026 10.10.2008 25.10.2008 1hr 1hr 30 min 2 hr
Please do give me idea how to get the time stam of each status of workflow.
Thanks,
D.prabhuHi,
I think the following tables would be helpful to you:-
SWW_CONT Container Contents for Work Item Data Container
SWW_CONTOB "Container Cont. for Work Item Data Container (Only Objects)"
SWWLOGHIST History of a work item
SWWORGTASK Assignment of WIs to Org.Units and Tasks
SWWUSERWI Current Work Items Assigned to a User
SWWWIHEAD Header Table for all Work Item Types
Hope it Helps!
Regards,
Kanika -
How to display elapsed time on TPC-2006 (Pocket PC 2003) as mm:ss?
The small attached PDA vi is a simple "egg timer" that measures elapsed time in minutes and seconds. I've tried every formatting trick I can think of, but cannot get my TPC-2006 to display the elapsed time as mm:ss. It always displays single digit minutes and seconds using one digit instead of 2. By this I mean that an elapsed time of 1 minute and 6 seconds will display as 1:6. My customer expects that elapsed time to display as 01:06.
I tried attaching a %t constant to the "format string" input of the "format into string" sub-vi, but the deployed display showed %t instead of elapsed time.
The second question is, how do I get rid of the up/down icons in the strip display box? They do not show in the virtual front panel, but always show up in the deployed application.
Jeff
Climbing the Labview learning curve!
Sanarus Medical
Pleasanton, CA
Attachments:
MinSecTimer.vi 12 KBHi Jeff,
I solved your first problem. The format string you were looking for to wire into the Format Into String function is %02.0f. Honestly, I can never remember what the syntax is for format strings, but I've devised a method anyone can use to make it really easy. First of all, place a numeric constant on the block diagram. Right click the constant and select Format and Precision. From that dialog, make the changes you like. You can actually see the changes propogate to the constant in real-time if you can see the block diagram constant. In your case, the change you wanted to make was Zero Padding - 2 spaces - pad with zeros on the left. After you've configured your number to look like you want, click on the Advanced Editing Mode radio button at the bottom. This is where you can manually enter in Format Strings for numeric constants or controls. The trick is, whatever changes you currently have made in the default editing mode will show up as a format string that you can copy and paste and use as you like. Hope this helps!
Message Edited by Jarrod S. on 05-25-2006 11:02 AM
Jarrod S.
National Instruments
Attachments:
double_digit_MinSecTimer-2.vi 12 KB
Default_edit.JPG 41 KB
Advanced_edit.JPG 43 KB -
How to calculate elapsed time(including time and date)?
Hi all,
I want to realize a function that can calculate the elapsed time which include time and date.Below is my thought:get the current time and date and store it to a .txt file then using the latest time and date subtract the time and date stored in the .txt file.how can realize it using the simplest way?I'm using LV7.1.Hi Idragon,
you can do it like this.
Mike
Attachments:
DateTime.PNG 12 KB -
How to get system time from cRIO?
Hello,
I have an NI cRIO-9076 chassis with an NI-9467 GPS module and an NI-9234 module.
I've downloaded the FPGA Timekeeper application which synchronises the FPGA clock to the 1PPS GPS, this works well. What I want to do is create a trigger that at a pre-defined HH:MMS the system will start to acquire and log data from the Accelerometers connected to the NI-9234 module.
I have added the controls for the entry of the HH:MMS and calculated the time in seconds. I would like to compare the system clock once it is locked to the entered timestamp and then trigger.
As I only have a value that represents seconds in the day I need to calculate the offset from EPOCH to compare against the GPS time reference. I have read that the NI system clock runs from 01/01/1904 instead of the EPOCH 01/01/1970.
The question is how do I get the current system time so that I can compare it against the entered time? I only need seconds in the day = (HH * 3600) + (MM * 60) + (SS)
Thank you,
Kind Regards,
SimonYou should use the Get Date/Time in Seconds VI which will return a timestamp. You can then format this timestamp using the Format Date/Time String to give you exactly the time format that you need. Then you can extract the numbers you need and do your math.
www.movimed.com - Custom Imaging Solutions
Attachments:
Get Seconds in Day.vi 9 KB -
How to get real time information about how many user are logged in and thei
I use tomcat as my server platform in Ubuntu for a war file.
I know in order to get real time information about how many user are logged in, we can count how many active sessions exist by a SessionCounter code. However, I have to permit HttpSessionListener in web.xml of tomcat. From other users' experiences, the configuration is complexed and has some errors.
Here's the link:http://www.stardeveloper.com/article...1112001&page=1
In order to get users' ip, in jsp, use request.getremotehost() or
request.getremoteaddress() by editing the jsp file.
I wonder if there's some open source software to use for these two purposes.
Thank you!That url is missing a few bits. The ... in the middle doesn't help.
we can count how many active sessions exist by a SessionCounter code.
However, I have to permit HttpSessionListener in web.xml of tomcat.
From other users' experiences, the configuration is complexed and has some errors.And have you tried it? The configuration isn't that complex.
What errors do you mean? Errors in tracking people, variance in the count? Probably related to internet issues and nothing you can do will alleviate them. -
How to get a time part from Date datatype
Hi,
I would like to know how to extract the timestamp alone from DATE datatype? If my input is '27-SEP-2011 23:59:00' I need the output as 23:59:00. I am surprised to see that there are no in-built functions for this or may be I am wrong. Basically I need to remove the date part from DATE data type and get the time.Please assist.
-Thanks
Edited by: user9546145 on Sep 27, 2011 2:24 PM
Edited by: user9546145 on Sep 27, 2011 2:25 PMHi,
user9546145 wrote:
Hi,
I would like to know how to extract the timestamp alone from DATE datatype? Be careful! In Oracle, TIMESTAMP means a datatype, similar to but distinct from DATE. You'll avoid confusion if you don't use the word "timestamp" to mean anything else.
There is a built-in function, TO_CHAR:
TO_CHAR (dt_col, 'HH24:MI:SS')Depending on how you plan to use the time, TRUNC is another handy built-in function:
dt_col - TRUNC (dt_col)is a NUMBER (not less than 0, but less than 1) which is suitable for many tasks, such as finding the average time.
I hope this answers your question.
If not, post a little sample data (CREATE TABLE and INSERT statements, relevant columns only) for all tables, and also post the results you want from that data.
Explain, using specific examples, how you get those results from that data.
Always say which version of Oracle you're using.
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