Example pthread hello

From EMAC Wiki
Jump to: navigation, search
TODO: {{#todo:SEOKWREV (12.11.13-12:52->JG+)(01.03.14-17:40->KY+);(01.03.14-18:05->MD+);(04.07.14-09:55->BS+);(04.10.14-11:05->BS+)|Jgreene|oe 4,oe 5,jg,md,ky,SEOKWREV,bs}}

This is a guide to the pthread_hello C example project included in the EMAC OE SDK.

This is a simple pthreads example application. A number of pthread nodes are created and each reports its existence by printing a hello message to the console.

The term pthread refers to POSIX Threads, a POSIX standard for threads.

The pthread_hello project builds one executable: p_hello.

Opening, Building and Uploading the Project Files

For information on opening the project from within Eclipse, please see Importing the EMAC OE SDK Projects with Eclipse. Then, follow Using the EMAC OE SDK Projects with Eclipse for information on how to build, upload and execute the example.

Alternatively, the Makefile can be used with the make command from the commandline to build and upload the example. For more information on this method, please see Using EMAC OE SDK Example Projects.

Usage and Behavior

Hardware Requirements

The pthread_hello C example project has no special hardware requirements. It should run just fine on any system for which the project files can be successfully compiled.

Using pthread_hello

./p_hello n

where n is number of threads

Usage Example

root@PPCE7:/tmp# ./p_hello 3
Hello from node 0
Hello from node 2
Hello from node 1

Summary

The pthread_hello C example project demonstrates how to use pthreads. For another example of pthread usage see example pthread demo.

Navigation menu