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function::ucallers(3stap) — Linux manual page

FUNCTION::UCALLERS(3stap)   Context FunctionsFUNCTION::UCALLERS(3stap)

NAME        top

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

SYNOPSIS        top

           ucallers:string(n:long)

ARGUMENTS        top

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

DESCRIPTION        top

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

NOTE        top

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

SEE ALSO        top

tapset::ucontext(3stap)

COLOPHON        top

       This page is part of thesystemtap (a tracing and live-system       analysis tool) project.  Information about the project can be       found at ⟨https://sourceware.org/systemtap/⟩.  If you have a bug       report for this manual page, send it to systemtap@sourceware.org.       This page was obtained from the project's upstream Git repository       ⟨git://sourceware.org/git/systemtap.git⟩ on 2025-08-11.  (At that       time, the date of the most recent commit that was found in the       repository was 2025-07-24.)  If you discover any rendering       problems in this HTML version of the page, or you believe there is       a better or more up-to-date source for the page, or you have       corrections or improvements to the information in this COLOPHON       (which isnot part of the original manual page), send a mail to       man-pages@man7.orgSystemTap Tapset Reference      April 2025FUNCTION::UCALLERS(3stap)

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