ABAP-调用堆栈

 1   data:
 2     lt_callstack   type abap_callstack,
 3     lt_e_callstack type sys_callst.
 4 
 5   call function 'SYSTEM_CALLSTACK'
 6     exporting
 7       max_level          = 30
 8     importing
 9       callstack          = lt_callstack
10       et_callstack       = lt_e_callstack .