Initial release of queue package

examples/example_parallel_test.go

@@ -0,0 +1,37 @@
+package queue_test
+
+import (
+	"context"
+	"fmt"
+	"sync"
+	"time"
+
+	"git.belvedersky.ru/belvedersky/queue"
+)
+
+// Example_parallel демонстрирует работу нескольких воркеров.
+func Example_parallel() {
+	type Task struct{ ID int }
+
+	q := queue.NewQueue[Task](5)
+	var mu sync.Mutex
+	q.Register(func(t Task) {
+		mu.Lock()
+		fmt.Printf("Worker processed: %d\n", t.ID)
+		mu.Unlock()
+		time.Sleep(20 * time.Millisecond)
+	})
+
+	ctx := context.Background()
+	q.HandleParallel(ctx, 4)
+
+	for i := range 3 {
+		q.Produce(Task{ID: i})
+	}
+
+	q.Shutdown(context.Background())
+	// Unordered output:
+	// Worker processed: 0
+	// Worker processed: 1
+	// Worker processed: 2
+}