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

NAME
       function::ustack - Return address at given depth of user stack
       backtrace

SYNOPSIS
           ustack:long(n:long)

ARGUMENTS
       n
           number of levels to descend in the stack.

DESCRIPTION
       Performs a simple (user space) backtrace, and returns the element at
       the specified position. The results of the backtrace itself are cached,
       so that the backtrace computation is performed at most once no matter
       how many times ustack is called, or in what order.

SEE ALSO
       tapset::ucontext-symbols(3stap)



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