function::ucallers(3stap) centos man page | unix.com

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

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

SYNOPSIS
	   ucallers:string(n:long)

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

DESCRIPTION
       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
       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.

SystemTap Tapset Reference					     June 2014						 FUNCTION::UCALLERS(3stap)