SERVICE

Alejandra Neolopan
Mind Map by Alejandra Neolopan, updated more than 1 year ago
Alejandra Neolopan
Created by Alejandra Neolopan about 4 years ago
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Description

Mind Map on SERVICE, created by Alejandra Neolopan on 01/12/2016.

Resource summary

SERVICE
1 Process
1.1 provide a service
1.2 rely Win API
1.3 Ever running
2 Components
2.1 Service App
2.2 Service Control Program
2.2.1 Services.msc
2.3 Service Control Manager
3 How is create?
3.1 1. El instalador del program debe registrar su servicio
3.1.1 2. Setup call a Advapi32.dll function
3.1.1.1 CreateService
3.1.1.1.1 Specify: Type (single,share), Path, Display Name, Account - context security, Startup Type(Manual,Automatic), Error Code (how react?)
3.1.1.2 3. A message is sended to SCM
3.1.1.2.1 4. SCM crea key in Registry
3.1.1.2.1.1 HKLM\System\ CurrentControlSet\Services
3.1.1.2.1.1.1 Save all parameters

Annotations:

  • Note The SCM does not access a service’s Parameters subkey until the service is deleted, at which time the SCM deletes the service’s entire key, including subkeys like Parameters.
3.1.1.2.1.1.1.1
4 How Start a service?
4.1 SCM send Start command
4.1.1 Process main thread run StartServiceCtrlDispatcher
4.1.1.1 Accet List of services point
4.1.1.1.1 Named pipe communication to SCM
4.1.1.1.1.1 Service thread
4.1.1.1.1.1.1 Is Running?
4.1.1.1.1.1.1.1 YES
4.1.1.1.1.1.1.1.1 Call RegisterServiceCtrlHandler --> save the Service Control Handler in the main process
4.1.1.1.1.1.1.1.1.1 Implemented for manage a lot of SCM commands
4.1.1.1.1.1.1.1.1.2 Inicialyze SERVICE
4.1.1.1.1.1.1.1.1.2.1 SCM ask its progress
4.1.1.1.1.1.1.1.1.2.2 Service thread --> Loop waiting REQUESTS from CLIENT APPs
4.1.1.1.1.1.1.2 NO
4.1.1.1.1.1.1.2.1 Return to the main function
4.1.1.1.1.1.1.2.1.1 Free resources before out
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