Difference between revisions of "Profiling Module"
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Revision as of 13:42, 15 June 2012
This XQuery Module contains functions for XQuery code.
Contents
Conventions
All functions in this module are assigned to the http://basex.org/modules/prof
namespace, which is statically bound to the prof
prefix.
All errors are assigned to the http://basex.org/errors
namespace, which is statically bound to the bxerr
prefix.
Functions
Profiling
prof:time
Signatures | prof:time($expr as item()) as item()* prof:time($expr as item(), $cache as xs:boolean) as item()* prof:time($expr as item(), $cache as xs:boolean, $label as xs:string) as item()*
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Summary | Measures the time needed to evaluate $expr and sends it to standard error or, if the GUI is used, to the Info View.If $cache is set to true() , the result will be temporarily cached. This way, a potential iterative execution of the expression (which often yields different memory usage) is blocked.A third, optional argument $label may be specified to tag the profiling result.
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Examples |
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prof:mem
Signatures | prof:mem($expr as item()) as item()* prof:mem($expr as item(), $cache as xs:boolean) as item()* prof:mem($expr as item(), $cache as xs:boolean, $label as xs:string) as item()*
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Summary | Measures the memory allocated by evaluating $expr and sends it to standard error or, if the GUI is used, to the Info View.If $cache is set to true() , the result will be temporarily cached. This way, a potential iterative execution of the expression (which often yields different memory usage) is blocked.A third, optional argument $label may be specified to tag the profiling result.
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Examples |
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prof:sleep
Signatures | prof:sleep($ms as xs:integer) as empty-sequence()* |
Summary | Sleeps for the specified number of milliseconds. |
Changelog
This module was introduced with Version 7.3.