Basic Synchronization
Overview
A simple application that demonstrates basic sanity of the kernel. Two threads (A and B) take turns printing a greeting message to the console, and use sleep requests and semaphores to control the rate at which messages are generated. This demonstrates that kernel scheduling, communication, and timing are operating correctly.
Building and Running
This project outputs to the console. It can be built and executed on QEMU as follows:
west build -b qemu_x86 samples/synchronization
west build -t run
Sample Output
thread_a: Hello World from cpu 0 on qemu_x86!
thread_b: Hello World from cpu 0 on qemu_x86!
thread_a: Hello World from cpu 0 on qemu_x86!
thread_b: Hello World from cpu 0 on qemu_x86!
thread_a: Hello World from cpu 0 on qemu_x86!
thread_b: Hello World from cpu 0 on qemu_x86!
thread_a: Hello World from cpu 0 on qemu_x86!
thread_b: Hello World from cpu 0 on qemu_x86!
thread_a: Hello World from cpu 0 on qemu_x86!
thread_b: Hello World from cpu 0 on qemu_x86!
<repeats endlessly>
Exit QEMU by pressing CTRL+A x.