Provided by: systemtap-doc_3.1-3ubuntu0.1_all 

NAME
function::strlen - Returns the length of a string
SYNOPSIS
strlen:long(s:string)
ARGUMENTS
s
the string
DESCRIPTION
This function returns the length of the string, which can be zero up to MAXSTRINGLEN.
SEE ALSO
tapset::string(3stap)
SystemTap Tapset Reference March 2016 FUNCTION::STRLEN(3stap)