calculate elapsed time of a script/command run in batch [duplicate] - windows

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Variables are not behaving as expected
(1 answer)
Closed 2 years ago.
I am trying to calculate/instrument time taken for a command/script to execute. Here's the batch file:
#echo off
setlocal EnableDelayedExpansion
echo "Starting the script run...." & echo/
set "startTime=%time: =0%"
echo "Initial Start: %startTime%" & echo/
(CALL node test_node_script.js) && (
set "endTime=%time: =0%"
echo "Initial End: %endTime%"
rem Get elapsed time:
set "end=!endTime:%time:~8,1%=%%100)*100+1!" & set "start=!startTime:%time:~8,1%=%%100)*100+1!"
set /A "elap=((((10!end:%time:~2,1%=%%100)*60+1!%%100)-((((10!start:%time:~2,1%=%%100)*60+1!%%100), elap-=(elap>>31)*24*60*60*100"
set /A "totalTime=elap/100"
echo "Elaps time: %totalTime%" & echo/
rem Convert elapsed time to HH:MM:SS:CC format:
set /A "cc=elap%%100+100,elap/=100,ss=elap%%60+100,elap/=60,mm=elap%%60+100,hh=elap/60+100"
echo "Start: %startTime%" & echo/
echo "End: %endTime%" & echo/
echo "Elapsed: %hh:~1%%time:~2,1%%mm:~1%%time:~2,1%%ss:~1%%time:~8,1%%cc:~1%" & echo/
) || (
echo "script failed" & echo/
)
the example node script(test_node_script.js):
async function init() {
console.log(1);
await sleep(1000);
console.log(2);
}
function sleep(ms) {
return new Promise((resolve) => {
setTimeout(resolve, ms);
});
}
init()
The issue is that the endTime is not being set in the batch file for some reason. Here's the output that I see in the cmd:
"Starting the script run...."
"Initial Start: 16:45:28.56"
1
2
"Initial End: "
"Elaps time: 0"
"Start: 16:45:28.56"
"End: "
"Elapsed: 00:00:00.00"
How do I get the endTime so this calculation works?

Answer 1

From my library:
#rem Taken from https://stackoverflow.com/a/6209392/3150445 and modified to allow composability
#rem and to eliminate the ~1..2cs overhead of loading another instance of cmd.exe.
#if "%1" equ "-?" goto :ShowHelpAndExit
#if "%1" equ "/?" goto :ShowHelpAndExit
#rem Measure the time to run whatever is on the command line.
#set _start_=%time%
#call %*
#set _CmdErrorLevel_=%ERRORLEVEL%
#set _end_=%time%
#call :OutputElapsedTime
#rem Clean-up and return the result from whatever we just timed for the caller.
#rem We could not put everything within a setlocal block and preserve the
#rem effects caused by whatever is in %*.
#set _start_=
#set _end_=
#set _CmdErrorLevel_=&exit /b %_CmdErrorLevel_%&
:OutputElapsedTime
#setlocal
#rem Break _start_ and _end_ into seperate hour, minute, second and centisecond values.
#rem _options_ works in locales that use period or comma for decimal fractions.
#set _options_="tokens=1-4 delims=:.,"
#for /f %_options_% %%a in ("%_start_%") do #call :SplitTime _start %%a %%b %%c %%d
#for /f %_options_% %%a in ("%_end_%") do #call :SplitTime _end %%a %%b %%c %%d
#rem Calculate the run-time.
#set /a _hours_=%_end_h_%-%_start_h_%
#set /a _mins_=%_end_m_%-%_start_m_%
#set /a _secs_=%_end_s_%-%_start_s_%
#set /a _cs_=%_end_cs_%-%_start_cs_%
#rem Correct for under-flows.
#if %_cs_% lss 0 #set /a _secs_ = %_secs_% - 1 &#set /a _cs_ = 100%_cs_%
#if %_secs_% lss 0 #set /a _mins_ = %_mins_% - 1 &#set /a _secs_ = 60%_secs_%
#if %_mins_% lss 0 #set /a _hours_ = %_hours_% - 1 &#set /a _mins_ = 60%_mins_%
#if %_hours_% lss 0 #set /a _hours_ = 24%_hours_%
#rem Zero padd the centiseconds if needed.
#if 1%_cs_% lss 100 #set _cs_=0%_cs_%
#rem Display summary results.
#set /a _totalsecs = %_hours_%*3600 + %_mins_%*60 + %_secs_%
#echo.
#echo TimeIt Result: %_hours_%:%_mins_%:%_secs_%.%_cs_% (%_totalsecs%.%_cs_%s total)
#if %_totalsecs% equ 0 (
#if %_cs_% equ 0 (
#echo An all zero result indicates command took less that 1/100 of a second.
)
)
#exit /b 0
:ShowHelpAndExit
#set _HelpFile=%~dpn0.cmd.help.txt
#if exist %_HelpFile% (#type %_HelpFile%) else (#echo Help file %_HelpFile% not found. &_HelpFile=&exit /b %_ERROR_FILE_NOT_FOUND_%)
#exit /b %_ERROR_SUCCESS_%
#rem Takes a prefix string, hours, minutes, seconds and centiseconds parameters
#rem and sets prefix_h, prefix_m, prefix_s and prefix_cs_ environment variables.
:SplitTime
#set %1_h_=%2
#set /a %1_m_=100%3 %% 100
#set /a %1_s_=100%4 %% 100
#set /a %1_cs_=100%5 %% 100
#exit /b 0
Save the above as timeit.cmd then save the following readme as timeit.cmd.help.txt:
TimeIt.cmd Help
Description:
Runs whatever is passed on the command line, times the execution and prints
the elapsed time. Can be run from the command line or within a script. All
side effects (environment variables) of the command(s) are preserved and the
status value returned.
Arguments:
/?
-? Spew this help content.
Everything else is passed to a `call %*` as-is and the ERRORVALUE
returned to caller.
Usage: TimeIt.cmd <whatever needs to be timed>