User's Guide
Reference Manual
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cosTime
User's Guide
Version 1.1.8

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Chapters

- The cosTime Application
  - Top of chapter
  - Content Overview
  - Brief Description of the User's Guide
- Introduction to cosTime
  - Top of chapter
  - Overview
- Installing cosTime
  - Top of chapter
  - Installation Process
- cosTime Examples
  - Top of chapter
  - A Tutorial on How to Create a Simple Service

# 2 Introduction to cosTime

### 2.1 Overview

The cosTime application is Time and TimerEvent Services compliant with the OMG Services CosTime and CosTimerEvent.

#### Purpose and Dependencies

This application use calender:now_to_universal_time(Now) to create a UTC. Hence, the underlying OS must deliver a correct result when calling erlang:now().

cosTime is dependent on Orber, which provides CORBA functionality in an Erlang environment.

cosTimerEvent is dependent on Orber and cosNotification, which provides CORBA functionality and Event handling in an Erlang environment.

#### Prerequisites

To fully understand the concepts presented in the documentation, it is recommended that the user is familiar with distributed programming, CORBA, the Orber and cosNotification applications.

Recommended reading includes CORBA, Fundamentals and Programming - Jon Siegel and Open Telecom Platform Documentation Set. It is also helpful to have read Concurrent Programming in Erlang.