= Example applications =

BOINC provides several example applications
in the boinc/samples/ directory.
See the [CompileApp instructions for building BOINC applications].

The example applications are:

 * '''example_app''': a example single-thread native BOINC application.
 The application does things (like checkpointing and graphics) that can be tricky or confusing.
 You can use it as a template for your own BOINC application;
 just rip out the computation part (which is trivial)
 and replace it with your code.

 You can run the application standalone.
 Create a file 'in' in the directory where you run it;
 it will convert it to upper case and write it to 'out', and use 20 seconds of CPU time.
 You can also run the graphics app standalone; it will show a bouncing 3D ball.
 If you copy the files `boinc/txf/Helvetica.txf` and `boinc/samples/uppercase/logo.jpg`
 to the directory where it runs,
 you'll also see an image and some text.
 * '''multi_thread''': an example multi-thread application.
 * '''wrapper''': the [WrapperApp BOINC wrapper].
 * '''worker''': a representative legacy application
 (i.e. it doesn't use the BOINC API or runtime library).
 Used for testing the wrapper.
 * '''sleeper''': test application for non-CPU-intensive projects (used for testing the BOINC core client).
 * '''vm_wrapper''': a wrapper for [VmApps applications that run in virtual machines]