f-21: code: ajout d'un system de worker

Signed-off-by: GnomeZworc <nicolas.boufidjeline@g3e.fr>

pkg/worker/queue.go

@@ -0,0 +1,33 @@
+package worker
+
+import "log"
+
+// Task is a function to be executed asynchronously by a worker.
+type Task func()
+
+// Queue is a FIFO channel-backed task queue consumed by worker goroutines.
+type Queue struct {
+	tasks chan Task
+}
+
+// New creates a Queue with the given channel buffer size.
+func New(bufferSize int) *Queue {
+	return &Queue{tasks: make(chan Task, bufferSize)}
+}
+
+// Submit enqueues a task. Blocks if the queue is full.
+func (q *Queue) Submit(t Task) {
+	q.tasks <- t
+}
+
+// Start launches n worker goroutines that consume and execute tasks.
+func (q *Queue) Start(n int) {
+	log.Printf("worker: starting %d workers", n)
+	for i := range n {
+		go func(id int) {
+			for task := range q.tasks {
+				task()
+			}
+		}(i)
+	}
+}