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NAME

       stapvars - systemtap variables

DESCRIPTION

       The  following  sections  enumerate  the  public  variables provided by
       standard tapsets  installed  under  /usr/share/systemtap/tapset.   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.
              Arguments  beyond #32 are not transcribed, and produce a warning
              message within the begin(-1) probe that initializes this  array.

   NULL
       NULL:long
              Simply defined as the number 0.

FILES

       /usr/share/systemtap/tapset

SEE ALSO

       stap(1)