Librt -Overview

Support for the Librt library on the Symbian platform enables -you to port Librt-based applications onto the Symbian platform quickly and -easily. With knowledge of the Librt library you can also develop Librt-based -applications on the Symbian platform with minimal coding effort and without -much knowledge of the native Symbian Utility C++ APIs.

Librt library details

The librt.dll provides -the Librt functionality and your code must link to librt.lib.

Important: Your -application or library that uses the Librt library for the clock solutions -must link to librt.dll prior to all other libraries in -the link order. This is because both libc.dll and librt.dll provide -similar clock interfaces but only the Librt library is modified to behave -according to the LSB 3.1 specification.

Architecture

The following image illustrates how -the Librt library interacts with the components of the P.I.P.S. environment -and also with the Symbian platform:

- The Librt library interacting with P.I.P.S. and the Symbian -platform - -

APIs

The following table is a comprehensive list -of Librt APIs as per the LSB 3.1 specification:

- - - -API - - - - -

Shared Memory APIs

- - -

shm_open()

- - -

shm_unlink()

- - -

Clock APIs

- - -

clock_getcpuclockid()

- - -

clock_getres()

- - -

clock_gettime()

- - -

clock_nanosleep()

- - -

clock_settime()

- - -

Timer APIs

- - -

timer_create()

- - -

timer_delete()

- - -

timer_getoverrun()

- - -

timer_gettime()

- - -

timer_settime

- - - -

Using Librt

The following tutorials describe some -high-level usage scenarios of the Librt library functions:

Shared -Memory Tutorial
Clocks -and Timers Tutorial

+ + + + + +Librt +Overview +

Support for the Librt library on the Symbian platform enables +you to port Librt-based applications onto the Symbian platform quickly and +easily. With knowledge of the Librt library you can also develop Librt-based +applications on the Symbian platform with minimal coding effort and without +much knowledge of the native Symbian Utility C++ APIs.

Librt library details

The librt.dll provides +the Librt functionality and your code must link to librt.lib.

Important: Your +application or library that uses the Librt library for the clock solutions +must link to librt.dll prior to all other libraries in +the link order. This is because both libc.dll and librt.dll provide +similar clock interfaces but only the Librt library is modified to behave +according to the LSB 3.1 specification.

Architecture

The following image illustrates how +the Librt library interacts with the components of the P.I.P.S. environment +and also with the Symbian platform:

+ The Librt library interacting with P.I.P.S. and the Symbian +platform + +

APIs

The following table is a comprehensive list +of Librt APIs as per the LSB 3.1 specification:

+ + + +API + + + + +

Shared Memory APIs

+ + +

shm_open()

+ + +

shm_unlink()

+ + +

Clock APIs

+ + +

clock_getcpuclockid()

+ + +

clock_getres()

+ + +

clock_gettime()

+ + +

clock_nanosleep()

+ + +

clock_settime()

+ + +

Timer APIs

+ + +

timer_create()

+ + +

timer_delete()

+ + +

timer_getoverrun()

+ + +

timer_gettime()

+ + +

timer_settime

+ + + +

Using Librt

The following tutorials describe some +high-level usage scenarios of the Librt library functions:

Shared +Memory Tutorial
Clocks +and Timers Tutorial

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