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Wish List: base::source() + Add Execution Time Argument

7 messages · Juan Telleria, Iñaki Ucar, William Dunlap +1 more

Original
Juan Telleria
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Dear R Developers,

Adding to source() base function a Timer which indicates the execution time
of the source code would be a very well welcome feature, and in my opinion
not difficult to implement as an additional funtion argument.

The source(timing = TRUE) function shall execute internally the following
code for each statement:

old <- Sys.time() # get start time at the beginning of source()
# source code
# print elapsed time
new <- Sys.time() - old # calculate difference
print(new) # print in nice format

Thank you.

Kind regards,

Juan Telleria
Iñaki Ucar
# 
2017-12-21 12:46 GMT+01:00 Juan Telleria <jtelleriar at gmail.com>:
system.time(source(...)) does what you want.

I?aki
Juan Telleria
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But by statement in the source file, I mean, for knowing during the
execution how much time is taking, without having to wait till the end.

2017-12-21 13:06 GMT+01:00 I?aki ?car <i.ucar86 at gmail.com>:

  
  


  


      

    

    

      
      

        


  

        

      Iñaki Ucar
    

    

      
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2017-12-21 15:05 GMT+01:00 Juan Telleria <jtelleriar at gmail.com>:

            

      
      
      
    

        
What's the ultimate purpose? Are you looking for a profiler (there are
some of them on CRAN) or some kind of progress bar (something like the
'progress' package would be useful)?

I?aki

  
  


  


      

    

    

      
      

        


  

        

      Juan Telleria
    

    

      
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I did not know "progress" package existed, thank you I?aki.

However, something like that would be nice to have by default in source(),
just something to add to R's "wish list", so that everybody can benefit
from it without extra-packages, as most of us I suppose we will spend all
day simply doing Ctrl + Run :)

Thank you,
Juan

2017-12-21 15:20 GMT+01:00 I?aki ?car <i.ucar86 at gmail.com>:

            

      
      
      
    

        

  
  


  


      

    

    

      
      

        


  

        

      William Dunlap
    

    

      
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Is source() the right place for this?  It may be, but we've had customers
who would like
this sort of thing done for commands entered by hand.  And there are those
who want
a description of any "non-triivial" objects created in .GlobalEnv by each
expression, ...
Do they need a way to wrap each expression evaluated in envir=.GlobalEnv
with a
function of their choice, one that would print times, datasets created,
etc.?

Bill Dunlap
TIBCO Software
wdunlap tibco.com

        
On Thu, Dec 21, 2017 at 3:46 AM, Juan Telleria <jtelleriar at gmail.com> wrote:

        

            

      
      
      
    

        

      
      
    

        

  
  


  


      

    

    

      
      

        


  

        

      Jim Hester
    

    

      
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R does provide the addTaskCallback / taskCallbackManager to run a
callback function after every top level command. However there is not
an equivalent interface that would be run _before_ each command, which
would make it possible to time of top level calls and provide other
execution measurements.

On Thu, Dec 21, 2017 at 11:31 AM, William Dunlap via R-devel

        
<r-devel at r-project.org> wrote: