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- Error
- Threads and parallel tasks
ChronoStart (Function) In french: ChronoDébut Starts a stopwatch to measure the duration of a process (in milliseconds) and resets a running stopwatch. The timing is stopped: If timing is stopped, it can be restarted with ChronoResume. The value of the stopwatch can be read at any time:
 New in version 28// Start the stopwatch
ChronoStart()
MyFunction()
// Stop the stopwatch
DurationMyFunction is Duration = ChronoEnd()
Info("The MyFunction() process lasted " + DurationMyFunction)
// Start the first stopwatch
ChronoStart(1)
// Start the second stopwatch
ChronoStart(2)
// Stop the first stopwatch
DurationChronoStart is Duration = ChronoEnd(1)
MyFunction()
// Stop the second stopwatch
DurationMyFunction is Duration = ChronoEnd(2)
Info("MyFunction() process lasted" + DurationMyFunction, ...
"The whole process lasted " + DurationChronoStart)
Syntax
Timing with a stopwatch number Hide the details
ChronoStart([<Stopwatch number>])
<Stopwatch number>: Optional integer Identifier of stopwatch used. If this parameter is not specified, its default value is set to 1. If this number corresponds to a running stopwatch, it is reset to zero. Remarks Error A WLanguage error occurs ("The stopwatch is not started") if ChronoStart was not called before ChronoValue and ChronoEnd. Threads and parallel tasks Each thread (and each parallel task) includes its own stopwatches. Two distinct threads (or two distinct parallel tasks) can perform separate timings by using the same stopwatch number. The WLanguage error "The stopwatch is not started" will occur only if ChronoStart is not called in the same thread (or in the same parallel task) as ChronoValue and ChronoEnd.
Related Examples:
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Unit examples (WINDEV): The Chrono functions
[ + ] Using the ChronoXXX functions. These functions are used to calculate the time passed between the start (ChronoStart) and the end (ChronoEnd).
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Unit examples (WINDEV): Calculations on durations
[ + ] Calculations on dates and times with the WLanguage functions: - Calculate the duration between two moments (dates and times) - Calculate a sum of durations - Calculate an average of durations
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Unit examples (WINDEV Mobile): The Chrono functions
[ + ] Using the WLanguage "Chrono" functions. These functions are used to calculate the time passed between the start (ChronoStart) and the end (ChronoEnd).
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Universal Apps (WINDEV Mobile): UWA Stopwatch
[ + ] This example explains how to create a stopwatch for a mobile device with WINDEV Mobile. In this example, a timer is used to display the hands of the stopwatch and to display the time passed on a regular basis.
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Business / UI classification: Neutral code
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