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"""A COM Server which exposes the NT Performance monitor in a very rudimentary way
Usage from VB:
set ob = CreateObject("Python.PerfmonQuery")
freeBytes = ob.Query("Memory", "Available Bytes")
"""
from win32com.server import exception, register
import pythoncom, win32pdhutil, winerror
class PerfMonQuery:
_reg_verprogid_ = "Python.PerfmonQuery.1"
_reg_progid_ = "Python.PerfmonQuery"
_reg_desc_ = "Python Performance Monitor query object"
_reg_clsid_ = "{64cef7a0-8ece-11d1-a65a-00aa00125a98}"
_reg_class_spec_ = "win32com.servers.perfmon.PerfMonQuery"
_public_methods_ = [ 'Query' ]
def Query(self, object, counter, instance = None, machine = None):
try:
return win32pdhutil.GetPerformanceAttributes(object, counter, instance, machine=machine)
except win32pdhutil.error as exc:
raise exception.Exception(desc=exc.strerror)
except TypeError as desc:
raise exception.Exception(desc=desc,scode=winerror.DISP_E_TYPEMISMATCH)
if __name__=='__main__':
print("Registering COM server...")
register.UseCommandLine(PerfMonQuery)