Merge pull request #1417 from emoose/xnotify-fixes

[Kernel] Make XamShow*UI exports send XN_SYS_UI notifications, & small XNotifyListener fix.

src/xenia/kernel/xam/xam_ui.cc

@@ -111,6 +111,9 @@ dword_result_t XamShowMessageBoxUI(dword_t user_index, lpwstring_t title_ptr,
     buttons.push_back(button);
   }
 
+  // Broadcast XN_SYS_UI = true
+  kernel_state()->BroadcastNotification(0x9, true);
+
   uint32_t chosen_button;
   if (cvars::headless) {
     // Auto-pick the focused button.
@@ -144,6 +147,9 @@ dword_result_t XamShowMessageBoxUI(dword_t user_index, lpwstring_t title_ptr,
   }
   *result_ptr = chosen_button;
 
+  // Broadcast XN_SYS_UI = false
+  kernel_state()->BroadcastNotification(0x9, false);
+
   if (overlapped) {
     kernel_state()->CompleteOverlappedImmediate(overlapped, X_ERROR_SUCCESS);
     return X_ERROR_IO_PENDING;
@@ -232,6 +238,9 @@ dword_result_t XamShowKeyboardUI(dword_t user_index, dword_t flags,
     return X_ERROR_INVALID_PARAMETER;
   }
 
+  // Broadcast XN_SYS_UI = true
+  kernel_state()->BroadcastNotification(0x9, true);
+
   if (cvars::headless) {
     // Redirect default_text back into the buffer.
     std::memset(buffer, 0, buffer_length * 2);
@@ -239,6 +248,9 @@ dword_result_t XamShowKeyboardUI(dword_t user_index, dword_t flags,
       xe::store_and_swap<std::wstring>(buffer, default_text.value());
     }
 
+    // Broadcast XN_SYS_UI = false
+    kernel_state()->BroadcastNotification(0x9, false);
+
     if (overlapped) {
       kernel_state()->CompleteOverlappedImmediate(overlapped, X_ERROR_SUCCESS);
       return X_ERROR_IO_PENDING;
@@ -269,6 +281,9 @@ dword_result_t XamShowKeyboardUI(dword_t user_index, dword_t flags,
   out_text = out_text.substr(0, buffer_length - 1);
   xe::store_and_swap<std::wstring>(buffer, out_text);
 
+  // Broadcast XN_SYS_UI = false
+  kernel_state()->BroadcastNotification(0x9, false);
+
   if (overlapped) {
     kernel_state()->CompleteOverlappedImmediate(overlapped, X_ERROR_SUCCESS);
     return X_ERROR_IO_PENDING;
@@ -300,6 +315,10 @@ dword_result_t XamShowDeviceSelectorUI(dword_t user_index, dword_t content_type,
       break;
   }
 
+  // Broadcast XN_SYS_UI = true followed by XN_SYS_UI = false
+  kernel_state()->BroadcastNotification(0x9, true);
+  kernel_state()->BroadcastNotification(0x9, false);
+
   if (overlapped) {
     kernel_state()->CompleteOverlappedImmediate(overlapped, X_ERROR_SUCCESS);
     return X_ERROR_IO_PENDING;

src/xenia/kernel/xnotifylistener.cc

@@ -36,14 +36,7 @@ void XNotifyListener::EnqueueNotification(XNotificationID id, uint32_t data) {
   }
 
   auto global_lock = global_critical_region_.Acquire();
-  if (notifications_.count(id)) {
-    // Already exists. Overwrite.
-    notifications_[id] = data;
-  } else {
-    // New.
-    notification_count_++;
-    notifications_.insert({id, data});
-  }
+  notifications_.push_back(std::pair<XNotificationID, uint32_t>(id, data));
   wait_handle_->Set();
 }
 
@@ -51,14 +44,13 @@ bool XNotifyListener::DequeueNotification(XNotificationID* out_id,
                                           uint32_t* out_data) {
   auto global_lock = global_critical_region_.Acquire();
   bool dequeued = false;
-  if (notification_count_) {
+  if (notifications_.size()) {
     dequeued = true;
     auto it = notifications_.begin();
     *out_id = it->first;
     *out_data = it->second;
     notifications_.erase(it);
-    notification_count_--;
-    if (!notification_count_) {
+    if (!notifications_.size()) {
       wait_handle_->Reset();
     }
   }
@@ -69,17 +61,22 @@ bool XNotifyListener::DequeueNotification(XNotificationID id,
                                           uint32_t* out_data) {
   auto global_lock = global_critical_region_.Acquire();
   bool dequeued = false;
-  if (notification_count_) {
-    auto it = notifications_.find(id);
-    if (it != notifications_.end()) {
+  if (!notifications_.size()) {
+    return dequeued;
+  }
+
+  for (auto it = notifications_.begin(); it != notifications_.end(); ++it) {
+    if (it->first != id) {
+      continue;
+    }
+
     dequeued = true;
     *out_data = it->second;
     notifications_.erase(it);
-      notification_count_--;
-      if (!notification_count_) {
+    if (!notifications_.size()) {
       wait_handle_->Reset();
     }
-    }
+    break;
   }
   return dequeued;
 }
@@ -88,8 +85,8 @@ bool XNotifyListener::Save(ByteStream* stream) {
   SaveObject(stream);
 
   stream->Write(mask_);
-  stream->Write(notification_count_);
-  if (notification_count_) {
+  stream->Write(notifications_.size());
+  if (notifications_.size()) {
     for (auto pair : notifications_) {
       stream->Write<uint32_t>(pair.first);
       stream->Write<uint32_t>(pair.second);
@@ -107,12 +104,12 @@ object_ref<XNotifyListener> XNotifyListener::Restore(KernelState* kernel_state,
   notify->RestoreObject(stream);
   notify->Initialize(stream->Read<uint64_t>());
 
-  notify->notification_count_ = stream->Read<size_t>();
-  for (size_t i = 0; i < notify->notification_count_; i++) {
+  auto notification_count_ = stream->Read<size_t>();
+  for (size_t i = 0; i < notification_count_; i++) {
     std::pair<XNotificationID, uint32_t> pair;
     pair.first = stream->Read<uint32_t>();
     pair.second = stream->Read<uint32_t>();
-    notify->notifications_.insert(pair);
+    notify->notifications_.push_back(pair);
   }
 
   return object_ref<XNotifyListener>(notify);

src/xenia/kernel/xnotifylistener.h

@@ -48,8 +48,7 @@ class XNotifyListener : public XObject {
  private:
   std::unique_ptr<xe::threading::Event> wait_handle_;
   xe::global_critical_region global_critical_region_;
-  std::unordered_map<XNotificationID, uint32_t> notifications_;
-  size_t notification_count_ = 0;
+  std::vector<std::pair<XNotificationID, uint32_t>> notifications_;
   uint64_t mask_ = 0;
 };