def Stop(self):
"""
Stops the service.
"""
self.GetServiceHandle()
# Make sure the service is not already stopped.
ssStatus = self.GetStatus()
if ssStatus.dwCurrentState == SERVICE_STOPPED:
return
# If a stop is pending, wait for it.
dwStartTime = GetTickCount()
dwTimeout = 30000
while ssStatus.dwCurrentState == SERVICE_STOP_PENDING:
# Do not wait longer than the wait hint. A good interval is
# one-tenth of the wait hint but not less than 1 second
# and not more than 10 seconds.
Sleep(min(max(1000, ssStatus.dwWaitHint / 10), 10000))
ssStatus = self.GetStatus()
if ssStatus.dwCurrentState == SERVICE_STOPPED:
return
if GetTickCount() - dwStartTime > dwTimeout:
raise TimeOutError()
# If the service is running, dependencies must be stopped first.
#self.StopDependentServices()
# Send a stop code to the service.
if not ControlService(
self.schService,
SERVICE_CONTROL_STOP,
cast(byref(ssStatus), LPSERVICE_STATUS)
):
raise WinError()
# Wait for the service to stop.
while ssStatus.dwCurrentState != SERVICE_STOPPED:
Sleep(ssStatus.dwWaitHint)
ssStatus = self.GetStatus()
if ssStatus.dwCurrentState == SERVICE_STOPPED:
break
if GetTickCount() - dwStartTime > dwTimeout:
raise TimeOutError()
def Start(self):
"""
Starts the service.
"""
self.GetServiceHandle()
# Check the status in case the service is not stopped.
ssStatus = self.GetStatus()
# Check if the service is already running. It would be possible to stop
# the service here, but for simplicity this example just returns.
if (
ssStatus.dwCurrentState != SERVICE_STOPPED and
ssStatus.dwCurrentState != SERVICE_STOP_PENDING
):
return
# Save the tick count and initial checkpoint.
dwStartTickCount = GetTickCount()
dwOldCheckPoint = ssStatus.dwCheckPoint
# Wait for the service to stop before attempting to start it.
while ssStatus.dwCurrentState == SERVICE_STOP_PENDING:
# Do not wait longer than the wait hint. A good interval is
# one-tenth of the wait hint but not less than 1 second
# and not more than 10 seconds.
Sleep(min(max(1000, ssStatus.dwWaitHint / 10), 10000))
# Check the status until the service is no longer stop pending.
ssStatus = self.GetStatus()
if ssStatus.dwCheckPoint > dwOldCheckPoint:
# Continue to wait and check.
dwStartTickCount = GetTickCount()
dwOldCheckPoint = ssStatus.dwCheckPoint
else:
if GetTickCount() - dwStartTickCount > ssStatus.dwWaitHint:
raise TimeOutError()
# Attempt to start the service.
if not StartService(
self.schService, # handle to service
0, # number of arguments
None # no arguments
):
raise WinError()
#print("Service start pending...")
# Check the status until the service is no longer start pending.
ssStatus = self.GetStatus()
# Save the tick count and initial checkpoint.
dwStartTickCount = GetTickCount()
dwOldCheckPoint = ssStatus.dwCheckPoint
while ssStatus.dwCurrentState == SERVICE_START_PENDING:
# Do not wait longer than the wait hint. A good interval is
# one-tenth the wait hint, but no less than 1 second and no
# more than 10 seconds.
Sleep(min(max(1000, ssStatus.dwWaitHint / 10), 10000))
# Check the status again.
ssStatus = self.GetStatus()
if ssStatus.dwCheckPoint > dwOldCheckPoint:
# Continue to wait and check.
dwStartTickCount = GetTickCount()
dwOldCheckPoint = ssStatus.dwCheckPoint
else:
if GetTickCount() - dwStartTickCount > ssStatus.dwWaitHint:
# No progress made within the wait hint.
break
# Determine whether the service is running.
if ssStatus.dwCurrentState == SERVICE_RUNNING:
return True
else:
print "Service not started."
print " Current State:", ssStatus.dwCurrentState
print " Exit Code:", ssStatus.dwWin32ExitCode
print " Check Point:", ssStatus.dwCheckPoint
print " Wait Hint:", ssStatus.dwWaitHint
raise Exception("Service not started.")