[apple/xnu.git] / tools / lldbmacros / counter.py

from memory import IterateZPerCPU
from xnu import *

@lldb_type_summary(['scalable_counter_t'])
@header("Counter Value\n-------------")
def GetSimpleCounter(counter):
    """ Prints out the value of a percpu counter
        params: counter: value - value object representing counter
        returns: str - THe value of the counter as a string.
    """
    val = 0
    for v in IterateZPerCPU(counter, "uint64_t *"):
        val += dereference(v)
    return str(val)

@lldb_command('showcounter')
def ShowSimpleCounter(cmd_args=None):
    """ Show the value of a percpu counter.
        Usage: showcounter <address of counter>
    """
    if not cmd_args:
        raise ArgumentError("Please specify the address of the counter you want to read.")
        return
    print GetSimpleCounter(kern.GetValueFromAddress(cmd_args[0], "scalable_counter_t"))
Commit	Line	Data
c3c9b80d A	1	from memory import IterateZPerCPU
	2	from xnu import *
	3
	4	@lldb_type_summary(['scalable_counter_t'])
	5	@header("Counter Value\n-------------")
	6	def GetSimpleCounter(counter):
	7	""" Prints out the value of a percpu counter
	8	params: counter: value - value object representing counter
	9	returns: str - THe value of the counter as a string.
	10	"""
	11	val = 0
	12	for v in IterateZPerCPU(counter, "uint64_t *"):
	13	val += dereference(v)
	14	return str(val)
	15
	16	@lldb_command('showcounter')
	17	def ShowSimpleCounter(cmd_args=None):
	18	""" Show the value of a percpu counter.
	19	Usage: showcounter <address of counter>
	20	"""
	21	if not cmd_args:
	22	raise ArgumentError("Please specify the address of the counter you want to read.")
	23	return
	24	print GetSimpleCounter(kern.GetValueFromAddress(cmd_args[0], "scalable_counter_t"))