# Mutex

---

## Object Definitions

```c
typedef struct {
    kpl_task_queue queue;
    _Atomic int32_t lock;
} kpl_mutex;
```

## Usage

1. Before adding to the `queue` do `value = lock++`
2. Add to the queue
3. If `value` is `0` the thread does an async schedule of the mutex task, otherwise the thread moves on

### Mutex Task

1. Get task from `queue` and run task
    * Use spinlock with `pasue`, the `lock` will be set before the task is added to the `queue`
2. After task completion, do `value = --lock`, stop if `value` is `0`, otherwise repeat