Extract components and add more tests

bin/simple_example.php

@@ -1,10 +1,10 @@
 <?php
 
 use Toalett\Multiprocessing\ContextBuilder;
+use Toalett\Multiprocessing\Task\Interval;
 
 require_once __DIR__ . '/../vendor/autoload.php';
 
-// We will run 50 jobs
 const NUM_JOBS = 50;
 
 $counter = new class {
@@ -16,22 +16,17 @@ $counter = new class {
 	}
 };
 
-// Create a default context with unlimited concurrency
-$context = ContextBuilder::create()->build();
+$context = ContextBuilder::create()
+	->withCleanupInterval(Interval::seconds(0.5))
+	->build();
 
-// Each time a worker stops, a job is finished
-$context->on('worker_stopped', fn() => $counter->increment());
+$context->on('worker_stopped', [$counter, 'increment']);
+$context->on('no_workers_remaining', [$context, 'stop']);
+$context->on('stopped', fn() => printf("\nJobs completed: %d\n", $counter->value));
 
-// Automatically stop the context when there are no workers left
-$context->on('no_workers_remaining', fn() => $context->stop());
-$context->on('stopped', fn() => printf("Jobs completed: %d\n", $counter->value));
-
-// You can submit jobs before the context is running. They will be executed
-// in the order in which they are submitted to the context. They are
-// scheduled on a future tick of the underlying event loop.
-// Each job will involve sleeping for ~3 seconds in this example.
 for ($i = 0; $i < NUM_JOBS; $i++) {
 	$context->submit(fn() => sleep(3));
+	print('.');
 }
 
 $context->run();