Intel 52377002 2.1 Standard Runtime Library, 2.2 Asynchronous Programming Models, 2.3 Synchronous Programming Model

Voice API Programming Guide — June 2005 23

2.Programming Models

This chapter briefly discusses the Standard Runtime Library and supported programming models:

•Standard Runtime Library. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

•Asynchronous Programming Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

•Synchronous Programming Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2.1 Standard Runtime Library

The Standard Runtime Library (SRL) provides a set of common system functions that are device

independent and are applicable to all Intel® telecom devices. The SRL consists of a data structure,

event management functions, device management functions (called standard attribute functions),

and device mapper functions. You can use the SRL to simplify application development, such as by

writing common event handlers to be used by all devices.

When developing voice processing applications, refer to the Standard Runtime Library

documentation in tandem with the voice library documentation. For more information on the

Standard Runtime Library, see the Standard Runtime Library API Library Reference and Standard

Runtime Library API Programming Guide.

2.2 Asynchronous Programming Models

Asynchronous programming enables a single program to control multiple voice channels within a

single process. This allows the development of complex applications where multiple tasks must be

coordinated simultaneously.

The asynchronous programming model uses functions that do not block thread execution; that is,

the function continues processing under the hood. A Standard Runtime Library (SRL) event later

indicates function completion.

Generally, if you are building applications that use any significant density, you should use the

asynchronous programming model to develop field solutions.

For complete information on asynchronous programming models, see the Standard Runtime

Library API Programming Guide.

2.3 Synchronous Programming Model

The synchronous programming model uses functions that block application execution until the

function completes. This model requires that each channel be controlled from a separate process.

This allows you to assign distinct applications to different channels dynamically in real time.