| Title: C++ Synchronization |
| |
| Description: |
| The sample project illustrates usage of pure virtual class, member |
| functions with different types of arguments, global objects constructor |
| invocation. |
| |
| A simple application demonstrates basic sanity of the kernel. The main thread |
| and a cooperative thread take turns printing a greeting message to the console, |
| and use timers 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 Project: |
| |
| This kernel project outputs to the console. It can be built and executed |
| on QEMU as follows: |
| |
| make run |
| |
| -------------------------------------------------------------------------------- |
| |
| Troubleshooting: |
| |
| Problems caused by out-dated project information can be addressed by |
| issuing one of the following commands then rebuilding the project: |
| |
| make clean # discard results of previous builds |
| # but keep existing configuration info |
| or |
| make pristine # discard results of previous builds |
| # and restore pre-defined configuration info |
| |
| -------------------------------------------------------------------------------- |
| |
| Sample Output: |
| |
| Create semaphore 0x001042b0 |
| Create semaphore 0x001042c4 |
| main: Hello World! |
| coop_thread_entry: Hello World! |
| main: Hello World! |
| coop_thread_entry: Hello World! |
| main: Hello World! |
| coop_thread_entry: Hello World! |
| main: Hello World! |
| coop_thread_entry: Hello World! |
| main: Hello World! |
| coop_thread_entry: Hello World! |
| main: Hello World! |
| coop_thread_entry: Hello World! |
| main: Hello World! |
| coop_thread_entry: Hello World! |
| main: Hello World! |
| coop_thread_entry: Hello World! |
| main: Hello World! |
| coop_thread_entry: Hello World! |
| main: Hello World! |
| |
| <repeats endlessly> |