FUNCTION::SPRINTUBA(3stap) Context Functions FUNCTION::SPRINTUBA(3stap)

NAME
       function::sprintubacktrace - Return stack back trace for current
       user-space task as string.

SYNOPSIS
           sprintubacktrace:string()

ARGUMENTS
       None

DESCRIPTION
       Returns a simple backtrace for the current task. One line per address.
       Includes the symbol name (or hex address if symbol couldn't be
       resolved) and module name (if found). Includes the offset from the
       start of the function if found, otherwise the offset will be added to
       the module (if found, between brackets). Returns the backtrace as
       string (each line terminated by a newline character). Note that the
       returned stack will be truncated to MAXSTRINGLEN, to print fuller and
       richer stacks use printubacktrace. Equivalent to
       sprintustack(ubacktrace), but more efficient (no need to translate
       between hex strings and final backtrace string).

NOTE
       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
       tapset::ucontext-unwind(3stap)



SystemTap Tapset Reference         June 2018       FUNCTION::SPRINTUBA(3stap)