wayland/core: move to new impl (#6268)

* wayland/core/dmabuf: move to new impl

it's the final countdown

src/helpers/signal/Signal.cpp

@@ -2,19 +2,40 @@
 #include <algorithm>
 
 void CSignal::emit(std::any data) {
-    bool dirty = false;
+    bool                             dirty = false;
 
+    std::vector<SP<CSignalListener>> listeners;
     for (auto& l : m_vListeners) {
-        if (const CHyprSignalListener L = l.lock())
-            L->emit(data);
-        else
+        if (l.expired()) {
             dirty = true;
+            continue;
+        }
+
+        listeners.emplace_back(l.lock());
     }
 
+    std::vector<CStaticSignalListener*> statics;
     for (auto& l : m_vStaticListeners) {
+        statics.emplace_back(l.get());
+    }
+
+    for (auto& l : listeners) {
+        // if there is only one lock, it means the event is only held by the listeners
+        // vector and was removed during our iteration
+        if (l.strongRef() == 1) {
+            dirty = true;
+            continue;
+        }
         l->emit(data);
     }
 
+    for (auto& l : statics) {
+        l->emit(data);
+    }
+
+    // release SPs
+    listeners.clear();
+
     if (dirty)
         std::erase_if(m_vListeners, [](const auto& other) { return other.expired(); });
 }