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