1from __future__ import absolute_import, print_function 2 3from memory import IterateZPerCPU 4from xnu import * 5 6@lldb_type_summary(['scalable_counter_t']) 7@header("Counter Value\n-------------") 8def GetSimpleCounter(counter): 9 """ Prints out the value of a percpu counter 10 params: counter: value - value object representing counter 11 returns: str - THe value of the counter as a string. 12 """ 13 val = 0 14 for v in IterateZPerCPU(counter, "uint64_t *"): 15 val += dereference(v) 16 return str(val) 17 18@lldb_command('showcounter') 19def ShowSimpleCounter(cmd_args=None): 20 """ Show the value of a percpu counter. 21 Usage: showcounter <address of counter> 22 """ 23 if not cmd_args: 24 raise ArgumentError("Please specify the address of the counter you want to read.") 25 26 print(GetSimpleCounter(kern.GetValueFromAddress(cmd_args[0], "scalable_counter_t"))) 27