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profiler(n) Tcl Profiler profiler(n) 





NAME


profiler - Tcl source code profiler






SYNOPSIS


package require Tcl 8.3


package require profiler ?0.6?


::profiler::init


::profiler::dump pattern


::profiler::print ?pattern?


::profiler::reset ?pattern?


::profiler::suspend ?pattern?


::profiler::resume ?pattern?


::profiler::new-disabled


::profiler::new-enabled


::profiler::sortFunctions key










DESCRIPTION


The profiler package provides a simple Tcl source code
    profiler. It is a function-level profiler; that is, it collects only
    function-level information, not the more detailed line-level information. It
    operates by redefining the Tcl proc command. Profiling is initiated
    via the ::profiler::init command.






COMMANDS



  
::profiler::init

  
Initiate profiling. All procedures created after this command is called
      will be profiled. To profile an entire application, this command must be
      called before any other commands.

  
::profiler::dump pattern

  
Dump profiling information for the all functions matching pattern.
      If no pattern is specified, information for all functions will be
      returned. The result is a list of key/value pairs that maps function names
      to information about that function. The information about each function is
      in turn a list of key/value pairs. The keys used and their values
    are:







  

  
The total number of times functionName was called.

  

  
A list of key/value pairs mapping each calling function that called
      functionName to the number of times it called
    functionName.

  

  
The runtime, in clock clicks, of functionName the first time that
      it was called.

  

  
The sum of the runtimes of all calls of functionName.

  

  
Average runtime of functionName.

  

  
Sum of the time spent in descendants of functionName.

  

  
Average time spent in descendants of functionName.







  
::profiler::print ?pattern?

  
Print profiling information for all functions matching pattern. If
      no pattern is specified, information about all functions will be
      displayed. The return result is a human readable display of the profiling
      information.

  
::profiler::reset ?pattern?

  
Reset profiling information for all functions matching pattern. If
      no pattern is specified, information will be reset for all functions.

  
::profiler::suspend ?pattern?

  
Suspend profiling for all functions matching pattern. If no pattern
      is specified, profiling will be suspended for all functions. It stops
      gathering profiling information after this command is issued. However, it
      does not erase any profiling information that has been gathered
      previously. Use resume command to re-enable profiling.

  
::profiler::resume ?pattern?

  
Resume profiling for all functions matching pattern. If no pattern
      is specified, profiling will be resumed for all functions. This command
      should be invoked after suspending the profiler in the code.

  
::profiler::new-disabled

  
Change the initial profiling state for new procedures. Invoking this
      command disables profiling for all procedures created after this command
      until new-enabled is invoked. Activate profiling of specific
      procedures via resume.

  
::profiler::new-enabled

  
Change the initial profiling state for new procedures. Invoking this
      command enables profiling for all procedures created after this command
      until new-disabled is invoked. Prevent profiling of specific
      procedures via suspend.

  
::profiler::sortFunctions key

  
Return a list of functions sorted by a particular profiling statistic.
      Supported values for key are: calls, exclusiveTime,
      compileTime, nonCompileTime, totalRuntime,
      avgExclusiveTime, and avgRuntime. The return result is a
      list of lists, where each sublist consists of a function name and the
      value of key for that function.








BUGS, IDEAS, FEEDBACK


This document, and the package it describes, will undoubtedly
    contain bugs and other problems. Please report such in the category
    profiler 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


performance, profile, speed






CATEGORY


Programming tools







  

    0.6
    tcllib