def InstallPerfmonForService(serviceName, iniName, dllName = None):
    # If no DLL name, look it up in the INI file name
    if not dllName: # May be empty string!
        dllName = win32api.GetProfileVal("Python", "dll", "", iniName)
    # Still not found - look for the standard one in the same dir as win32service.pyd
    if not dllName:
        try:
            tryName = os.path.join(os.path.split(win32service.__file__)[0], "perfmondata.dll")
            if os.path.isfile(tryName):
                dllName = tryName
        except __HOLE__:
            # Frozen app? - anyway, can't find it!
            pass
    if not dllName:
        raise ValueError, "The name of the performance DLL must be available"
    dllName = win32api.GetFullPathName(dllName)
    # Now setup all the required "Performance" entries.
    hkey = win32api.RegOpenKey(win32con.HKEY_LOCAL_MACHINE, "SYSTEM\\CurrentControlSet\\Services\\%s" % (serviceName), 0, win32con.KEY_ALL_ACCESS)
    try:
        subKey = win32api.RegCreateKey(hkey, "Performance")
        try:
            win32api.RegSetValueEx(subKey, "Library", 0, win32con.REG_SZ, dllName)
            win32api.RegSetValueEx(subKey, "Open", 0, win32con.REG_SZ, "OpenPerformanceData")
            win32api.RegSetValueEx(subKey, "Close", 0, win32con.REG_SZ, "ClosePerformanceData")
            win32api.RegSetValueEx(subKey, "Collect", 0, win32con.REG_SZ, "CollectPerformanceData")
        finally:
            win32api.RegCloseKey(subKey)
    finally:
        win32api.RegCloseKey(hkey)
    # Now do the "Lodctr" thang...

    try:
        import perfmon
        path, fname = os.path.split(iniName)
        oldPath = os.getcwd()
        if path:
            os.chdir(path)
        try:
            perfmon.LoadPerfCounterTextStrings("python.exe " + fname)
        finally:
            os.chdir(oldPath)
    except win32api.error, details:
        print "The service was installed OK, but the performance monitor"
        print "data could not be loaded.", details
dataset/ETHPy150Open deanhiller/databus/webapp/play1.3.x/python/Lib/site-packages/win32/lib/win32serviceutil.py/InstallPerfmonForService