Project structure refactor:

- Change package name general_server to gateway
- Changing the structure of directories and packages
- Adding vendor to the project

vendor/github.com/fsnotify/fsnotify/shared.go

@@ -0,0 +1,64 @@
+package fsnotify
+
+import "sync"
+
+type shared struct {
+	Events chan Event
+	Errors chan error
+	done   chan struct{}
+	mu     sync.Mutex
+}
+
+func newShared(ev chan Event, errs chan error) *shared {
+	return &shared{
+		Events: ev,
+		Errors: errs,
+		done:   make(chan struct{}),
+	}
+}
+
+// Returns true if the event was sent, or false if watcher is closed.
+func (w *shared) sendEvent(e Event) bool {
+	if e.Op == 0 {
+		return true
+	}
+	select {
+	case <-w.done:
+		return false
+	case w.Events <- e:
+		return true
+	}
+}
+
+// Returns true if the error was sent, or false if watcher is closed.
+func (w *shared) sendError(err error) bool {
+	if err == nil {
+		return true
+	}
+	select {
+	case <-w.done:
+		return false
+	case w.Errors <- err:
+		return true
+	}
+}
+
+func (w *shared) isClosed() bool {
+	select {
+	case <-w.done:
+		return true
+	default:
+		return false
+	}
+}
+
+// Mark as closed; returns true if it was already closed.
+func (w *shared) close() bool {
+	w.mu.Lock()
+	defer w.mu.Unlock()
+	if w.isClosed() {
+		return true
+	}
+	close(w.done)
+	return false
+}