Reading -Kernel Trace Data From Chunks Tutorial

Purpose

Trace data is written to kernel side chunks. -The kernel trace tool API can read from the chunks for further processing.

Intended audience

This document is intended for -application developers writing a trace tool using the kernel trace tool component.

Required background

The trace filters defined in EUser. -The kernel trace tool component in general.

Introduction

Reading trace data from chunks is a -short task which is performed in combination with related tasks as explained -in Kernel Trace Tool -Tutorial.

Using Kernel Trace tool to read trace data from chunks

The -following tasks will be covered in this tutorial:

Basic procedure

The high level steps to reading -trace data from chunks are shown here:

Using the API

These are the function calls required -to

Call the Open() function -of the RBTrace object. This opens a communication channel -to the kernel side implementation and makes the buffer accessible.
Create a data notification -request which will cause data to be written from the chunks to the buffer.

See Also

Kernel -Trace Tool Overview

Kernel -Trace Tool Tutorial

+ + + + + +Reading +Kernel Trace Data From Chunks TutorialExplains how to use the kernel trace tool to read data from chunks. +

Purpose

Trace data is written to kernel side chunks. +The kernel trace tool API can read from the chunks for further processing.

Intended audience

This document is intended for +application developers writing a trace tool using the kernel trace tool component.

Required background

The trace filters defined in EUser. +The kernel trace tool component in general.

Introduction

Reading trace data from chunks is a +short task which is performed in combination with related tasks as explained +in Kernel Trace Tool +Tutorial.

Using Kernel Trace tool to read trace data from chunks

The +following tasks will be covered in this tutorial:

Basic procedure

The high level steps to reading +trace data from chunks are shown here:

Using the API

These are the function calls required +to

Call the Open() function +of the RBTrace object. This opens a communication channel +to the kernel side implementation and makes the buffer accessible.
Create a data notification +request which will cause data to be written from the chunks to the buffer.