GNU/Linux man pages
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GNU/Linux |
CentOS 5.5 |
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stapvars(3stap) |
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stapvars − systemtap variables
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.
/usr/share/systemtap/tapset
stap(1)
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stapvars(3stap) | |