kern: delete KWritableEvent, devirtualize KReadableEvent Signal/Clear

libraries/libmesosphere/source/kern_k_readable_event.cpp

@@ -17,6 +17,16 @@
 
 namespace ams::kern {
 
+    void KReadableEvent::Initialize(KEvent *parent) {
+        MESOSPHERE_ASSERT_THIS();
+        m_is_signaled  = false;
+        m_parent       = parent;
+
+        if (m_parent != nullptr) {
+            m_parent->Open();
+        }
+    }
+
     bool KReadableEvent::IsSignaled() const {
         MESOSPHERE_ASSERT_THIS();
         MESOSPHERE_ASSERT(KScheduler::IsSchedulerLockedByCurrentThread());
@@ -27,6 +37,11 @@ namespace ams::kern {
     void KReadableEvent::Destroy() {
         MESOSPHERE_ASSERT_THIS();
         if (m_parent) {
+            {
+                KScopedSchedulerLock sl;
+                m_parent->OnReadableEventDestroyed();
+            }
+
             m_parent->Close();
         }
     }