clockd Documentation

Author:

Raimo Vuonnala

Introduction

Time management service is a new subsystem to provide a common library for all time-related (not alarms, though) services.

Structure

The following ASCII art describes the architecture.

+-----+  +-----+  +-----+ 
|app 1|  |app 2|  |app 3| applications
---------------------------- libtime.h
       | libtime |
       +---------+
         ^ ^ ^ 
         | | |  
   D-Bus | | | 
         | | |  
         v v v 
       +------+  D-Bus+---+
daemon |clockd!<------!csd!
       +------+       +---+
           |              userland
----------------------------------
           |              kernel
     - systemtime
     - RTC (real time clock)
     - timezone

Components

clockd

• The Daemon (see clockd.c, rclockd.c, mainloop.c and server.c)

libtime

• API library

csd

• Cellular service daemon
• Sends "network time changed" signal when operator time/timezone has been received from vellnet (when attached to network)

clocktest

• Module test utility (see clocktest.c)

SVN

All stuff is in repo dms, subdir clockd

This document was made with command

  make doc; (cd doc/latex; make)