STAPREF(1)                  General Commands Manual                 STAPREF(1)

JMENO
       stapref - referencni prirucka pro skriptovaci jazyk systemtapu



POUZiTI
       stapref


POPIS
       Referencni prirucka pro skriptovaci jazyk systemtapu.


JAZYK
       Klicova slova
              o break
              o continue
              o delete
              o else
              o exit
              o foreach
              o for
              o function
              o global
              o private
              o if
              o in
              o next
              o probe
              o return
              o try/catch
              o while


Datove typy a operatory
              Cela cisla
              o var1 = 5
              o global var2 = 10

              Retezce
              o var1 = "string1"
              o global var2 = "string2"

              Asociativni pole
              o global array1[]
              o global array2[SIZE]
              o array[index] = 5

              Kontextove promenne
              o $var
              o $var$ ("pekny vypis" retezce)

              Binarni ciselne operatory
              o * / % + - << >> & ^ | && ||

              Binarni retezcove operatory
              o . (spojeni retezcu)

              Operatory pro ciselne prirazeni
              o = += -= *= /= %= >>= <<= &= ^= |=

              Prirazovaci operatory pro retezce
              o = .=

              Unarni ciselne operatory
              o + - ! ~ ++ --

              Operatory pro porovnavani cisel a retezcu
              o < > <= >= == !=

              Operatory pro srovnani proti regularnimu vyrazu
              o =~ !~

              Ternarni operator
              o cond ? exp1 : exp2

              Seskupovaci operator
              o ( expression )

              Operatory nad poli
              o array[index] (array read/write)
              o [index] in array

              Agregacni operator.
              o var <<< value


Prikazy
              Skok
              o continue
              o break
              o next
              o return expression
              o try prikaz catch (zprava)

              Prikazy vetveni
              o if (vyraz) prikaz
              o else prikaz

              Prikazy pro iterovani
              o foreach (promenna in pole) prikaz
              o foreach ([var1,var2,...] in pole) prikaz
              o for (vyraz; vyraz; vyraz) prikaz
              o while (vyraz) prikaz

              Deklarace
              o function jmeno (promenna : type, ...) { prikaz }
              o function jmeno : type (promenna : type, ...) { prikaz }
              o function jmeno : type (promenna : type, ...) %{ c_prikaz %}
              o probe sondazni_bod { prikaz }
              o probe label = sondazni_bod { prikaz }


Lexikalni struktury
              Komentare
              o # ... komentar
              o // ... komentar
              o /* ... komentar ... */

              Znacky pro preprocesor
              o %( vyraz %? true_tokens %: false_tokens %)
              o @define znacka (promenna, ...) %{ prikaz %}


Vestavene funkce
              Vestavene agregacni funkce
              o @avg (promenna)
              o @count (promenna)
              o @hist_linear (promenna, N, N, N)
              o @hist_log (promenna)
              o @max (promenna)
              o @min (promenna)
              o @sum (promenna)

              Vestavene funkce pro vystup
              o print (promenna)
              o printf (format:retezec, promenna, ...)
                kde format ma tvar: %[flags][sirka][.presnost][delka]specifiaktor
              o printd (oddelovac:retezec, promenna, ...)
              o printdln (oddelovac:retezec, promenna, ...)
              o println ()
              o sprint:retezec (promenna)
              o sprintf:retezec (format:retezec, promenna, ...)

              Vestavene funkce pro pristup k promennym
              o @cast (variable, "type_name"[, "module"])
              o @defined (variable)


Sondazni body
              Nektere bezne sondazni body
              o kernel.function(PATTERN) kernel.function(PATTERN).call
              o kernel.function(PATTERN).return
              o kernel.FUNCTION (PATTERN).return.maxactive(VALUE)
              o kernel.FUNCTION (PATTERN).inline
              o kernel.FUNCTION (PATTERN).label(LPATTERN)
              o module(MPATTERN).FUNCTION (PATTERN)
              o module(MPATTERN).FUNCTION (PATTERN).call
              o module(MPATTERN).FUNCTION (PATTERN).return.maxactive(VALUE)
              o module(MPATTERN).FUNCTION (PATTERN).inline
              o kernel.statement(PATTERN)
              o kernel.statement(ADDRESS).absolute
              o module(MPATTERN).statement(PATTERN)
              o kprobe.FUNCTION (FUNCTION)
              o kprobe.FUNCTION (FUNCTION).return
              o kprobe.module(NAME).FUNCTION (FUNCTION)
              o kprobe.module(NAME).FUNCTION (FUNCTION).return
              o kprobe.statement(ADDRESS).absolute
              o process.begin process("PATH").begin
              o process(PID).begin process.thread.begin
              o process("PATH").thread.begin
              o process(PID).thread.begin
              o process.end
              o process("PATH").end
              o process(PID).end
              o process.thread.end
              o process("PATH").thread.end
              o process(PID).thread.end
              o process("PATH").syscall
              o process(PID).syscall
              o process.syscall.return
              o process("PATH").syscall.return
              o process(PID).syscall.return
              o process("PATH").FUNCTION ("NAME")
              o process("PATH").statement("*@FILE.c:123")
              o process("PATH").FUNCTION ("*").return
              o process("PATH").FUNCTION ("myfun").label("foo")
              o process("PATH").mark("LABEL")
              o java("PNAME").class("CLASSNAME").method("PATTERN")
              o java("PNAME").class("CLASSNAME").method("PATTERN").return
              o java(PID).class("CLASSNAME").method("PATTERN")
              o java(PID).class("CLASSNAME").method("PATTERN").return
              o python2.module("MODULENAME").function("PATTERN")
              o python2.module("MODULENAME").function("PATTERN").return
              o python3.module("MODULENAME").function("PATTERN")
              o python3.module("MODULENAME").function("PATTERN").return


Funkce standardniho tapsetu
              Nektere beznejsi funkce standardniho tapsetu
              o addr:long ()
              o backtrace:string ()
              o caller:string ()
              o caller_addr:long ()
              o cmdline_arg:string (N:long)
              o cmdline_args:string (N:long,m:long,delim:string)
              o cmdline_str:string ()
              o env_var:string (name:string)
              o execname:string ()
              o int_arg:long (N:long)
              o isinstr:long(s1:string,s2:string)
              o long_arg:long (N:long)
              o modname:string ()
              o module_name:string ()
              o pid:long ()
              o pn:string ()
              o pointer_arg:string (N:long)
              o pp:string ()
              o print_backtrace ()
              o probefunc:string ()
              o register:long(name:string)
              o str_replace:string(prnt_str:string,srch_str:string,rplc_str:string)
              o stringat:long(str:string,pos:long)
              o strlen:long(str:string)
              o strtol:long(str:string,base:long)
              o substr:string(str:string,start:long,length:long)
              o user_long:long(addr:long)
              o user_string:string(addr:long)



VIZ TEZ
       stap(1)


CHYBY
       Pouzijte projektovou bugzillu, nebo mailing list.
       http://sourceware.org/systemtap/, <systemtap@sourceware.org>.

       error::reporting(7stap),
       https://sourceware.org/systemtap/wiki/HowToReportBugs


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