Memory(View)Widget: Avoid Global System Accessor

Source/Core/DolphinQt/Debugger/MemoryViewWidget.cpp

@@ -154,7 +154,7 @@ public:
     u32 end_address = address + static_cast<u32>(bytes.size()) - 1;
     AddressSpace::Accessors* accessors = AddressSpace::GetAccessors(m_view->GetAddressSpace());
 
-    Core::CPUThreadGuard guard(Core::System::GetInstance());
+    const Core::CPUThreadGuard guard(m_view->m_system);
 
     if (!bytes.empty() && accessors->IsValidAddress(guard, address) &&
         accessors->IsValidAddress(guard, end_address))
@@ -170,8 +170,8 @@ private:
   MemoryViewWidget* m_view;
 };
 
-MemoryViewWidget::MemoryViewWidget(QWidget* parent)
+MemoryViewWidget::MemoryViewWidget(Core::System& system, QWidget* parent)
-    : QWidget(parent), m_system(Core::System::GetInstance())
+    : QWidget(parent), m_system(system)
 {
   auto* layout = new QHBoxLayout();
   layout->setContentsMargins(0, 0, 0, 0);
@@ -443,7 +443,7 @@ void MemoryViewWidget::UpdateColumns()
 
   if (Core::GetState() == Core::State::Paused)
   {
-    Core::CPUThreadGuard guard(Core::System::GetInstance());
+    const Core::CPUThreadGuard guard(m_system);
     UpdateColumns(&guard);
   }
   else
@@ -850,12 +850,8 @@ void MemoryViewWidget::OnCopyHex(u32 addr)
 {
   const auto length = GetTypeSize(m_type);
 
-  const AddressSpace::Accessors* accessors = AddressSpace::GetAccessors(m_address_space);
+  const u64 value =
-
+      AddressSpace::GetAccessors(m_address_space)->ReadU64(Core::CPUThreadGuard{m_system}, addr);
-  const u64 value = [addr, accessors] {
-    Core::CPUThreadGuard guard(Core::System::GetInstance());
-    return accessors->ReadU64(guard, addr);
-  }();
 
   QApplication::clipboard()->setText(
       QStringLiteral("%1").arg(value, sizeof(u64) * 2, 16, QLatin1Char('0')).left(length * 2));
@@ -873,12 +869,8 @@ void MemoryViewWidget::OnContextMenu(const QPoint& pos)
   const u32 addr = item_selected->data(USER_ROLE_CELL_ADDRESS).toUInt();
   const bool item_has_value =
       item_selected->data(USER_ROLE_VALUE_TYPE).toInt() != static_cast<int>(Type::Null) &&
-      [this, addr] {
+      AddressSpace::GetAccessors(m_address_space)
-        const AddressSpace::Accessors* accessors = AddressSpace::GetAccessors(m_address_space);
+          ->IsValidAddress(Core::CPUThreadGuard{m_system}, addr);
-
-        Core::CPUThreadGuard guard(Core::System::GetInstance());
-        return accessors->IsValidAddress(guard, addr);
-      }();
 
   auto* menu = new QMenu(this);
 

Source/Core/DolphinQt/Debugger/MemoryViewWidget.h

@@ -53,7 +53,7 @@ public:
     WriteOnly
   };
 
-  explicit MemoryViewWidget(QWidget* parent = nullptr);
+  explicit MemoryViewWidget(Core::System& system, QWidget* parent = nullptr);
 
   void CreateTable();
   void Update();

Source/Core/DolphinQt/Debugger/MemoryWidget.cpp

@@ -40,7 +40,8 @@
 
 using Type = MemoryViewWidget::Type;
 
-MemoryWidget::MemoryWidget(QWidget* parent) : QDockWidget(parent)
+MemoryWidget::MemoryWidget(Core::System& system, QWidget* parent)
+    : QDockWidget(parent), m_system(system)
 {
   setWindowTitle(tr("Memory"));
   setObjectName(QStringLiteral("memory"));
@@ -287,7 +288,7 @@ void MemoryWidget::CreateWidgets()
   sidebar_scroll->setWidget(sidebar);
   sidebar_scroll->setWidgetResizable(true);
 
-  m_memory_view = new MemoryViewWidget(this);
+  m_memory_view = new MemoryViewWidget(m_system, this);
 
   m_splitter->addWidget(m_memory_view);
   m_splitter->addWidget(sidebar_scroll);
@@ -496,7 +497,7 @@ void MemoryWidget::SetAddress(u32 address)
     AddressSpace::Accessors* accessors =
         AddressSpace::GetAccessors(m_memory_view->GetAddressSpace());
 
-    Core::CPUThreadGuard guard(Core::System::GetInstance());
+    const Core::CPUThreadGuard guard(m_system);
     good = accessors->IsValidAddress(guard, current_addr);
   }
 
@@ -653,7 +654,7 @@ void MemoryWidget::OnSetValue()
     return;
   }
 
-  Core::CPUThreadGuard guard(Core::System::GetInstance());
+  const Core::CPUThreadGuard guard(m_system);
 
   AddressSpace::Accessors* accessors = AddressSpace::GetAccessors(m_memory_view->GetAddressSpace());
   u32 end_address = target_addr.address + static_cast<u32>(bytes.size()) - 1;
@@ -715,7 +716,7 @@ void MemoryWidget::OnSetValueFromFile()
 
   AddressSpace::Accessors* accessors = AddressSpace::GetAccessors(m_memory_view->GetAddressSpace());
 
-  Core::CPUThreadGuard guard(Core::System::GetInstance());
+  const Core::CPUThreadGuard guard(m_system);
 
   for (u8 b : file_contents)
     accessors->WriteU8(guard, target_addr.address++, b);
@@ -833,7 +834,7 @@ void MemoryWidget::FindValue(bool next)
     AddressSpace::Accessors* accessors =
         AddressSpace::GetAccessors(m_memory_view->GetAddressSpace());
 
-    Core::CPUThreadGuard guard(Core::System::GetInstance());
+    const Core::CPUThreadGuard guard(m_system);
     return accessors->Search(guard, target_addr.address,
                              reinterpret_cast<const u8*>(search_for.data()),
                              static_cast<u32>(search_for.size()), next);

Source/Core/DolphinQt/Debugger/MemoryWidget.h

@@ -22,14 +22,15 @@ class QSplitter;
 
 namespace Core
 {
+class System;
 class CPUThreadGuard;
-}
+}  // namespace Core
 
 class MemoryWidget : public QDockWidget
 {
   Q_OBJECT
 public:
-  explicit MemoryWidget(QWidget* parent = nullptr);
+  explicit MemoryWidget(Core::System& system, QWidget* parent = nullptr);
   ~MemoryWidget();
 
   void SetAddress(u32 address);
@@ -78,6 +79,8 @@ private:
   void closeEvent(QCloseEvent*) override;
   void showEvent(QShowEvent* event) override;
 
+  Core::System& m_system;
+
   MemoryViewWidget* m_memory_view;
   QSplitter* m_splitter;
   QComboBox* m_search_address;

Source/Core/DolphinQt/MainWindow.cpp

@@ -449,7 +449,7 @@ void MainWindow::CreateComponents()
   m_jit_widget = new JITWidget(this);
   m_log_widget = new LogWidget(this);
   m_log_config_widget = new LogConfigWidget(this);
-  m_memory_widget = new MemoryWidget(this);
+  m_memory_widget = new MemoryWidget(Core::System::GetInstance(), this);
   m_network_widget = new NetworkWidget(this);
   m_register_widget = new RegisterWidget(this);
   m_thread_widget = new ThreadWidget(this);