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debug::heartbeat(3tcl) debug narrative debug::heartbeat(3tcl) 





NAME


debug::heartbeat - debug narrative - heartbeat






SYNOPSIS


package require Tcl 8.5


package require debug::heartbeat ?1.0.1?


package require debug ?1?


debug heartbeat ?delta?










DESCRIPTION






API



  

  
This method activates or disables a heartbeat with which to monitor the
      event loop of an event-based Tcl application.
    
It reserves the debug tag heartbeat for its operation
        and writes a message every delta milliseconds.

    
A delta-value <= 0 disables the heartbeat.

    
The message produced by the heartbeat contains a sequence
        counter and the time in milliseconds since the last beat, thus providing
        insight into timing variationsn and deviations from the nominal
        delta.

  








BUGS, IDEAS, FEEDBACK


This document, and the package it describes, will undoubtedly
    contain bugs and other problems. Please report such in the category
    debug of the Tcllib Trackers
    [http://core.tcl.tk/tcllib/reportlist]. Please also report any ideas for
    enhancements you may have for either package and/or documentation.


When proposing code changes, please provide unified diffs,
    i.e the output of diff -u.


Note further that attachments are strongly preferred over
    inlined patches. Attachments can be made by going to the Edit form of
    the ticket immediately after its creation, and then using the left-most
    button in the secondary navigation bar.






KEYWORDS


debug, heartbeat, log, narrative, trace






CATEGORY


debugging, tracing, and logging






COPYRIGHT


Copyright (c) 200?, Colin McCormack, Wub Server Utilities
Copyright (c) 2012, Andreas Kupries <andreas_kupries@users.sourceforge.net>








  

    1.0.1
    tcllib