STAPVARS(3stap) STAPVARS(3stap)

NAME
       stapvars - systemtap variables


DESCRIPTION
       The following sections enumerate the public variables provided by stan‐
       dard tapsets installed, (the installation path is show in the stappaths
       (7)  manual  page).   Each  variable  is described with a type, and its
       behavior/restrictions.  The syntax is the same as printed with the stap
       option -p2.  Examples:


       example1:long
              Variable "example1" contains an integer.


       example2:string [long]
              Variable "example2" is an array of strings, indexed by integers.


   ARGV
       argc:long
              Contains  the value of the  $# value: the number of command line
              arguments passed to the systemtap  script.   It  is  initialized
              with an implicit begin(-1) probe.


       argv:string [long]
              Contains  each  command line argument as a string.  argv[1] will
              equal @1 if there was at least one command line argument.  Argu‐
              ments beyond #32 are not transcribed, and produce a warning mes‐
              sage within the begin(-1) probe that initializes this array.


   NULL
       NULL:long
              Simply defined as the number 0.


FILES
       More files and their corresponding paths can be found in the  stappaths
       (7) manual page.


SEE ALSO
       stap(1)
       stappaths(7)



                                                               STAPVARS(3stap)