| Title: Dining Philosophers |
| |
| Description: |
| |
| An implementation of a solution to the Dining Philosophers problem |
| (a classic multi-thread synchronization problem). This particular |
| implementation demonstrates the usage of microkernel task groups, |
| Mutex APIs and timer drivers from multiple (6) tasks. |
| |
| The philosopher always tries to get the lowest fork first (f1 then f2). |
| When done, he will give back the forks in the reverse order (f2 then f1). |
| If he gets two forks, he is EATING. Otherwise, he is THINKING. |
| |
| Each philosopher will randomly alternate between the EATING and THINKING |
| states. |
| |
| -------------------------------------------------------------------------------- |
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| Building and Running Project: |
| |
| This microkernel project outputs to the console. It can be built and executed |
| on QEMU as follows: |
| |
| make qemu |
| |
| -------------------------------------------------------------------------------- |
| |
| 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: |
| |
| Philosopher 0 EATING |
| Philosopher 1 THINKING |
| Philosopher 2 THINKING |
| Philosopher 3 EATING |
| Philosopher 4 THINKING |
| Philosopher 5 THINKING |
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| Demo Description |
| ---------------- |
| An implementation of a solution to the Dining Philosophers problem |
| (a classic multi-thread synchronization problem). This particular |
| implementation demonstrates the usage of multiple (6) tasks |
| of differing priorities and the nanokernel semaphores and timers. |
