implement wait tree widget

src/core/hle/kernel/kernel.cpp

@@ -40,6 +40,10 @@ void WaitObject::WakeupAllWaitingThreads() {
     HLE::Reschedule(__func__);
 }
 
+const std::vector<SharedPtr<Thread>>& WaitObject::GetWaitingThreads() const {
+    return waiting_threads;
+}
+
 HandleTable::HandleTable() {
     next_generation = 1;
     Clear();

src/core/hle/kernel/kernel.h

@@ -149,6 +149,9 @@ public:
     /// Wake up all threads waiting on this object
     void WakeupAllWaitingThreads();
 
+    /// Get a const reference to the waiting threads list for debug use
+    const std::vector<SharedPtr<Thread>>& GetWaitingThreads() const;
+
 private:
     /// Threads waiting for this object to become available
     std::vector<SharedPtr<Thread>> waiting_threads;

src/core/hle/kernel/thread.cpp

@@ -665,4 +665,8 @@ void ThreadingShutdown() {
     ready_queue.clear();
 }
 
+const std::vector<SharedPtr<Thread>>& GetThreadList() {
+    return thread_list;
+}
+
 } // namespace

src/core/hle/kernel/thread.h

@@ -236,4 +236,9 @@ void ThreadingInit();
  */
 void ThreadingShutdown();
 
+/**
+ * Get a const reference to the thread list for debug use
+ */
+const std::vector<SharedPtr<Thread>>& GetThreadList();
+
 } // namespace