core: Track system exit lock status

Used to determine if yuzu should confirm before pausing or stopping a game.

src/core/core.cpp

@@ -163,6 +163,7 @@ struct System::Impl {
         gpu_core = VideoCore::CreateGPU(system);
 
         is_powered_on = true;
+        exit_lock = false;
 
         LOG_DEBUG(Core, "Initialized OK");
 
@@ -244,6 +245,7 @@ struct System::Impl {
                                     perf_stats->GetMeanFrametime());
 
         is_powered_on = false;
+        exit_lock = false;
 
         // Shutdown emulation session
         renderer.reset();
@@ -328,6 +330,7 @@ struct System::Impl {
     std::unique_ptr<Core::Hardware::InterruptManager> interrupt_manager;
     CpuCoreManager cpu_core_manager;
     bool is_powered_on = false;
+    bool exit_lock = false;
 
     std::unique_ptr<FileSys::CheatEngine> cheat_engine;
     std::unique_ptr<Tools::Freezer> memory_freezer;
@@ -624,6 +627,14 @@ const Service::APM::Controller& System::GetAPMController() const {
     return impl->apm_controller;
 }
 
+void System::SetExitLock(bool locked) {
+    impl->exit_lock = locked;
+}
+
+bool System::GetExitLock() const {
+    return impl->exit_lock;
+}
+
 System::ResultStatus System::Init(Frontend::EmuWindow& emu_window) {
     return impl->Init(*this, emu_window);
 }

src/core/core.h

@@ -322,6 +322,10 @@ public:
 
     const Service::APM::Controller& GetAPMController() const;
 
+    void SetExitLock(bool locked);
+
+    bool GetExitLock() const;
+
 private:
     System();