1FUNCTION::UCALLERS(3stap)      Context Functions     FUNCTION::UCALLERS(3stap)
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NAME

6       function::ucallers - Return first n elements of user stack backtrace
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SYNOPSIS

9           ucallers:string(n:long)
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ARGUMENTS

12       n
13           number of levels to descend in the stack (not counting the top
14           level). If n is -1, print the entire stack.
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DESCRIPTION

17       This function returns a string of the first n hex addresses from the
18       backtrace of the user stack. Output may be truncated as per maximum
19       string length (MAXSTRINGLEN).
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NOTE

22       To get (full) backtraces for user space applications and shared shared
23       libraries not mentioned in the current script run stap with -d
24       /path/to/exe-or-so and/or add --ldd to load all needed unwind data.
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SEE ALSO

27       tapset::ucontext(3stap)
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31SystemTap Tapset Reference         May 2019          FUNCTION::UCALLERS(3stap)