Merge pull request #515 from Armada651/threading

Make the emulation stop asynchronous to prevent deadlocks.
This commit is contained in:
Dolphin Bot 2014-07-10 21:02:47 +02:00
commit bc655d1a82
15 changed files with 176 additions and 119 deletions

View File

@ -83,6 +83,7 @@ bool g_bStarted = false;
void *g_pWindowHandle = nullptr;
std::string g_stateFileName;
std::thread g_EmuThread;
static StoppedCallbackFunc s_onStoppedCb = nullptr;
static std::thread g_cpu_thread;
static bool g_requestRefreshInfo = false;
@ -155,7 +156,7 @@ bool IsRunning()
bool IsRunningAndStarted()
{
return g_bStarted;
return g_bStarted && !g_bStopping;
}
bool IsRunningInCurrentThread()
@ -191,8 +192,14 @@ bool Init()
if (g_EmuThread.joinable())
{
PanicAlertT("Emu Thread already running");
return false;
if (IsRunning())
{
PanicAlertT("Emu Thread already running");
return false;
}
// The Emu Thread was stopped, synchronize with it.
g_EmuThread.join();
}
g_CoreStartupParameter = _CoreParameter;
@ -226,12 +233,8 @@ bool Init()
// Called from GUI thread
void Stop() // - Hammertime!
{
if (PowerPC::GetState() == PowerPC::CPU_POWERDOWN)
{
if (g_EmuThread.joinable())
g_EmuThread.join();
if (GetState() == CORE_STOPPING)
return;
}
const SCoreStartupParameter& _CoreParameter =
SConfig::GetInstance().m_LocalCoreStartupParameter;
@ -258,28 +261,6 @@ void Stop() // - Hammertime!
g_video_backend->Video_ExitLoop();
}
INFO_LOG(CONSOLE, "%s", StopMessage(true, "Stopping Emu thread ...").c_str());
g_EmuThread.join(); // Wait for emuthread to close.
INFO_LOG(CONSOLE, "%s", StopMessage(true, "Main Emu thread stopped").c_str());
// Clear on screen messages that haven't expired
g_video_backend->Video_ClearMessages();
// Close the trace file
Core::StopTrace();
// Reload sysconf file in order to see changes committed during emulation
if (_CoreParameter.bWii)
SConfig::GetInstance().m_SYSCONF->Reload();
INFO_LOG(CONSOLE, "Stop [Main Thread]\t\t---- Shutdown complete ----");
Movie::Shutdown();
PatchEngine::Shutdown();
g_bStopping = false;
}
// Create the CPU thread, which is a CPU + Video thread in Single Core mode.
@ -478,6 +459,8 @@ void EmuThread()
}
}
INFO_LOG(CONSOLE, "%s", StopMessage(true, "Stopping Emu thread ...").c_str());
// Wait for g_cpu_thread to exit
INFO_LOG(CONSOLE, "%s", StopMessage(true, "Stopping CPU-GPU thread ...").c_str());
@ -510,6 +493,27 @@ void EmuThread()
Wiimote::Shutdown();
g_video_backend->Shutdown();
AudioCommon::ShutdownSoundStream();
INFO_LOG(CONSOLE, "%s", StopMessage(true, "Main Emu thread stopped").c_str());
// Clear on screen messages that haven't expired
g_video_backend->Video_ClearMessages();
// Close the trace file
Core::StopTrace();
// Reload sysconf file in order to see changes committed during emulation
if (_CoreParameter.bWii)
SConfig::GetInstance().m_SYSCONF->Reload();
INFO_LOG(CONSOLE, "Stop [Video Thread]\t\t---- Shutdown complete ----");
Movie::Shutdown();
PatchEngine::Shutdown();
g_bStopping = false;
if (s_onStoppedCb)
s_onStoppedCb();
}
// Set or get the running state
@ -534,15 +538,17 @@ void SetState(EState _State)
EState GetState()
{
if (g_bStopping)
return CORE_STOPPING;
if (g_bHwInit)
{
if (CCPU::IsStepping())
return CORE_PAUSE;
else if (g_bStopping)
return CORE_STOPPING;
else
return CORE_RUN;
}
return CORE_UNINITIALIZED;
}
@ -740,4 +746,15 @@ void UpdateTitle()
}
}
void Shutdown()
{
if (g_EmuThread.joinable())
g_EmuThread.join();
}
void SetOnStoppedCallback(StoppedCallbackFunc callback)
{
s_onStoppedCb = callback;
}
} // Core

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@ -39,6 +39,7 @@ enum EState
bool Init();
void Stop();
void Shutdown();
std::string StopMessage(bool, std::string);
@ -81,4 +82,8 @@ void UpdateTitle();
// the return value of the first call should be passed in as the second argument of the second call.
bool PauseAndLock(bool doLock, bool unpauseOnUnlock=true);
// for calling back into UI code without introducing a dependency on it in core
typedef void(*StoppedCallbackFunc)(void);
void SetOnStoppedCallback(StoppedCallbackFunc callback);
} // namespace

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@ -69,8 +69,7 @@ void WalkTheStack(const std::function<void(u32)>& stack_step)
// instead of "pointing ahead"
bool GetCallstack(std::vector<CallstackEntry> &output)
{
if (Core::GetState() == Core::CORE_UNINITIALIZED ||
!Memory::IsRAMAddress(PowerPC::ppcState.gpr[1]))
if (!Core::IsRunning() || !Memory::IsRAMAddress(PowerPC::ppcState.gpr[1]))
return false;
if (LR == 0)

View File

@ -382,7 +382,7 @@ bool IsNetPlayRecording()
void ChangePads(bool instantly)
{
if (Core::GetState() == Core::CORE_UNINITIALIZED)
if (!Core::IsRunning())
return;
int controllers = 0;
@ -444,7 +444,7 @@ bool BeginRecordingInput(int controllers)
if (SConfig::GetInstance().m_SIDevice[i] == SIDEVICE_GC_TARUKONGA)
bongos |= (1 << i);
if (Core::IsRunning())
if (Core::IsRunningAndStarted())
{
if (File::Exists(tmpStateFilename))
File::Delete(tmpStateFilename);

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@ -424,7 +424,7 @@ void LoadFileStateData(const std::string& filename, std::vector<u8>& ret_data)
void LoadAs(const std::string& filename)
{
if (Core::GetState() == Core::CORE_UNINITIALIZED)
if (!Core::IsRunning())
return;
// Stop the core while we load the state

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@ -230,7 +230,7 @@ void CConfigMain::SetSelectedTab(int tab)
// Used to restrict changing of some options while emulator is running
void CConfigMain::UpdateGUI()
{
if (Core::GetState() != Core::CORE_UNINITIALIZED)
if (Core::IsRunning())
{
// Disable the Core stuff on GeneralPage
CPUThread->Disable();
@ -669,7 +669,7 @@ void CConfigMain::CreateGUIControls()
Latency->Bind(wxEVT_SPINCTRL, &CConfigMain::AudioSettingsChanged, this);
if (Core::GetState() != Core::CORE_UNINITIALIZED)
if (Core::IsRunning())
{
Latency->Disable();
BackendSelection->Disable();
@ -888,7 +888,7 @@ void CConfigMain::CoreSettingsChanged(wxCommandEvent& event)
{
// Core - Basic
case ID_CPUTHREAD:
if (Core::GetState() != Core::CORE_UNINITIALIZED)
if (Core::IsRunning())
return;
SConfig::GetInstance().m_LocalCoreStartupParameter.bCPUThread = CPUThread->IsChecked();
break;
@ -1099,7 +1099,7 @@ void CConfigMain::ChooseMemcardPath(std::string& strMemcard, bool isSlotA)
{
strMemcard = filename;
if (Core::GetState() != Core::CORE_UNINITIALIZED)
if (Core::IsRunning())
{
// Change memcard to the new file
ExpansionInterface::ChangeDevice(
@ -1136,7 +1136,7 @@ void CConfigMain::ChooseSIDevice(wxString deviceName, int deviceNum)
SConfig::GetInstance().m_SIDevice[deviceNum] = tempType;
if (Core::GetState() != Core::CORE_UNINITIALIZED)
if (Core::IsRunning())
{
// Change plugged device! :D
SerialInterface::ChangeDevice(tempType, deviceNum);
@ -1172,7 +1172,7 @@ void CConfigMain::ChooseEXIDevice(wxString deviceName, int deviceNum)
SConfig::GetInstance().m_EXIDevice[deviceNum] = tempType;
if (Core::GetState() != Core::CORE_UNINITIALIZED)
if (Core::IsRunning())
{
// Change plugged device! :D
ExpansionInterface::ChangeDevice(

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@ -219,7 +219,7 @@ void CCodeWindow::OnSymbolsMenu(wxCommandEvent& event)
{
Parent->ClearStatusBar();
if (Core::GetState() == Core::CORE_UNINITIALIZED) return;
if (!Core::IsRunning()) return;
std::string existing_map_file, writable_map_file;
bool map_exists = CBoot::FindMapFile(&existing_map_file,

View File

@ -217,7 +217,7 @@ WXLRESULT CRenderFrame::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPa
case WM_CLOSE:
// Let Core finish initializing before accepting any WM_CLOSE messages
if (Core::GetState() == Core::CORE_UNINITIALIZED) break;
if (!Core::IsRunning()) break;
// Use default action otherwise
default:
@ -352,7 +352,7 @@ CFrame::CFrame(wxFrame* parent,
, m_LogWindow(nullptr), m_LogConfigWindow(nullptr)
, m_FifoPlayerDlg(nullptr), UseDebugger(_UseDebugger)
, m_bBatchMode(_BatchMode), m_bEdit(false), m_bTabSplit(false), m_bNoDocking(false)
, m_bGameLoading(false)
, m_bGameLoading(false), m_bClosing(false)
{
for (int i = 0; i <= IDM_CODEWINDOW - IDM_LOGWINDOW; i++)
bFloatWindow[i] = false;
@ -425,6 +425,7 @@ CFrame::CFrame(wxFrame* parent,
Movie::SetInputManip(TASManipFunction);
State::SetOnAfterLoadCallback(OnAfterLoadCallback);
Core::SetOnStoppedCallback(OnStoppedCallback);
// Setup perspectives
if (g_pCodeWindow)
@ -535,15 +536,18 @@ void CFrame::OnActive(wxActivateEvent& event)
void CFrame::OnClose(wxCloseEvent& event)
{
m_bClosing = true;
// Before closing the window we need to shut down the emulation core.
// We'll try to close this window again once that is done.
if (Core::GetState() != Core::CORE_UNINITIALIZED)
{
DoStop();
if (Core::GetState() != Core::CORE_UNINITIALIZED)
return;
UpdateGUI();
event.Veto();
return;
}
//Stop Dolphin from saving the minimized Xpos and Ypos
// Stop Dolphin from saving the minimized Xpos and Ypos
if (main_frame->IsIconized())
main_frame->Iconize(false);
@ -692,6 +696,10 @@ void CFrame::OnHostMessage(wxCommandEvent& event)
case WM_USER_STOP:
DoStop();
break;
case IDM_STOPPED:
OnStopped();
break;
}
}
@ -714,7 +722,7 @@ void CFrame::GetRenderWindowSize(int& x, int& y, int& width, int& height)
void CFrame::OnRenderWindowSizeRequest(int width, int height)
{
if (Core::GetState() == Core::CORE_UNINITIALIZED ||
if (!Core::IsRunning() ||
!SConfig::GetInstance().m_LocalCoreStartupParameter.bRenderWindowAutoSize ||
RendererIsFullscreen() || m_RenderFrame->IsMaximized())
return;
@ -904,6 +912,16 @@ void OnAfterLoadCallback()
}
}
void OnStoppedCallback()
{
// warning: this gets called from the EmuThread, so we should only queue things to do on the proper thread
if (main_frame)
{
wxCommandEvent event(wxEVT_HOST_COMMAND, IDM_STOPPED);
main_frame->GetEventHandler()->AddPendingEvent(event);
}
}
void TASManipFunction(SPADStatus *PadStatus, int controllerID)
{
if (main_frame)
@ -1091,8 +1109,7 @@ void CFrame::OnKeyDown(wxKeyEvent& event)
void CFrame::OnKeyUp(wxKeyEvent& event)
{
if(Core::GetState() != Core::CORE_UNINITIALIZED &&
(RendererHasFocus() || TASInputHasFocus()))
if(Core::IsRunning() && (RendererHasFocus() || TASInputHasFocus()))
{
if (IsHotkey(event, HK_TOGGLE_THROTTLE))
{

View File

@ -123,6 +123,7 @@ public:
void InitBitmaps();
void DoPause();
void DoStop();
void OnStopped();
void DoRecordingSave();
void UpdateGUI();
void UpdateGameList();
@ -185,6 +186,7 @@ private:
bool m_bTabSplit;
bool m_bNoDocking;
bool m_bGameLoading;
bool m_bClosing;
std::vector<std::string> drives;
@ -353,6 +355,7 @@ private:
int GetCmdForHotkey(unsigned int key);
void OnAfterLoadCallback();
void OnStoppedCallback();
// For TASInputDlg
void TASManipFunction(SPADStatus *PadStatus, int controllerID);

View File

@ -802,7 +802,7 @@ void CFrame::OnRecordExport(wxCommandEvent& WXUNUSED (event))
void CFrame::OnPlay(wxCommandEvent& WXUNUSED (event))
{
if (Core::GetState() != Core::CORE_UNINITIALIZED)
if (Core::IsRunning())
{
// Core is initialized and emulator is running
if (UseDebugger)
@ -832,9 +832,16 @@ void CFrame::OnPlay(wxCommandEvent& WXUNUSED (event))
void CFrame::OnRenderParentClose(wxCloseEvent& event)
{
DoStop();
if (Core::GetState() == Core::CORE_UNINITIALIZED)
event.Skip();
// Before closing the window we need to shut down the emulation core.
// We'll try to close this window again once that is done.
if (Core::GetState() != Core::CORE_UNINITIALIZED)
{
DoStop();
event.Veto();
return;
}
event.Skip();
}
void CFrame::OnRenderParentMove(wxMoveEvent& event)
@ -1120,72 +1127,78 @@ void CFrame::DoStop()
wxBeginBusyCursor();
BootManager::Stop();
wxEndBusyCursor();
confirmStop = false;
UpdateGUI();
}
}
void CFrame::OnStopped()
{
wxEndBusyCursor();
confirmStop = false;
#if defined(HAVE_X11) && HAVE_X11
if (SConfig::GetInstance().m_LocalCoreStartupParameter.bDisableScreenSaver)
X11Utils::InhibitScreensaver(X11Utils::XDisplayFromHandle(GetHandle()),
X11Utils::XWindowFromHandle(GetHandle()), false);
#endif
m_RenderFrame->SetTitle(StrToWxStr(scm_rev_str));
m_RenderFrame->SetTitle(StrToWxStr(scm_rev_str));
// Destroy the renderer frame when not rendering to main
m_RenderParent->Unbind(wxEVT_SIZE, &CFrame::OnRenderParentResize, this);
// Destroy the renderer frame when not rendering to main
m_RenderParent->Unbind(wxEVT_SIZE, &CFrame::OnRenderParentResize, this);
// Keyboard
wxTheApp->Unbind(wxEVT_KEY_DOWN, &CFrame::OnKeyDown, this);
wxTheApp->Unbind(wxEVT_KEY_UP, &CFrame::OnKeyUp, this);
// Keyboard
wxTheApp->Unbind(wxEVT_KEY_DOWN, &CFrame::OnKeyDown, this);
wxTheApp->Unbind(wxEVT_KEY_UP, &CFrame::OnKeyUp, this);
// Mouse
wxTheApp->Unbind(wxEVT_RIGHT_DOWN, &CFrame::OnMouse, this);
wxTheApp->Unbind(wxEVT_RIGHT_UP, &CFrame::OnMouse, this);
wxTheApp->Unbind(wxEVT_MIDDLE_DOWN, &CFrame::OnMouse, this);
wxTheApp->Unbind(wxEVT_MIDDLE_UP, &CFrame::OnMouse, this);
wxTheApp->Unbind(wxEVT_MOTION, &CFrame::OnMouse, this);
if (SConfig::GetInstance().m_LocalCoreStartupParameter.bHideCursor)
m_RenderParent->SetCursor(wxNullCursor);
DoFullscreen(false);
if (!SConfig::GetInstance().m_LocalCoreStartupParameter.bRenderToMain)
{
m_RenderFrame->Destroy();
}
else
{
// Mouse
wxTheApp->Unbind(wxEVT_RIGHT_DOWN, &CFrame::OnMouse, this);
wxTheApp->Unbind(wxEVT_RIGHT_UP, &CFrame::OnMouse, this);
wxTheApp->Unbind(wxEVT_MIDDLE_DOWN, &CFrame::OnMouse, this);
wxTheApp->Unbind(wxEVT_MIDDLE_UP, &CFrame::OnMouse, this);
wxTheApp->Unbind(wxEVT_MOTION, &CFrame::OnMouse, this);
if (SConfig::GetInstance().m_LocalCoreStartupParameter.bHideCursor)
m_RenderParent->SetCursor(wxNullCursor);
DoFullscreen(false);
if (!SConfig::GetInstance().m_LocalCoreStartupParameter.bRenderToMain)
{
m_RenderFrame->Destroy();
}
else
{
#if defined(__APPLE__)
// Disable the full screen button when not in a game.
NSView *view = (NSView *) m_RenderFrame->GetHandle();
NSWindow *window = [view window];
// Disable the full screen button when not in a game.
NSView *view = (NSView *)m_RenderFrame->GetHandle();
NSWindow *window = [view window];
[window setCollectionBehavior:NSWindowCollectionBehaviorDefault];
[window setCollectionBehavior : NSWindowCollectionBehaviorDefault];
#endif
// Make sure the window is not longer set to stay on top
m_RenderFrame->SetWindowStyle(m_RenderFrame->GetWindowStyle() & ~wxSTAY_ON_TOP);
}
m_RenderParent = nullptr;
// Clean framerate indications from the status bar.
GetStatusBar()->SetStatusText(" ", 0);
// Clear wiimote connection status from the status bar.
GetStatusBar()->SetStatusText(" ", 1);
// If batch mode was specified on the command-line, exit now.
if (m_bBatchMode)
Close(true);
// If using auto size with render to main, reset the application size.
if (SConfig::GetInstance().m_LocalCoreStartupParameter.bRenderToMain &&
SConfig::GetInstance().m_LocalCoreStartupParameter.bRenderWindowAutoSize)
SetSize(SConfig::GetInstance().m_LocalCoreStartupParameter.iWidth,
SConfig::GetInstance().m_LocalCoreStartupParameter.iHeight);
m_GameListCtrl->Enable();
m_GameListCtrl->Show();
m_GameListCtrl->SetFocus();
UpdateGUI();
// Make sure the window is not longer set to stay on top
m_RenderFrame->SetWindowStyle(m_RenderFrame->GetWindowStyle() & ~wxSTAY_ON_TOP);
}
m_RenderParent = nullptr;
// Clean framerate indications from the status bar.
GetStatusBar()->SetStatusText(" ", 0);
// Clear wiimote connection status from the status bar.
GetStatusBar()->SetStatusText(" ", 1);
// If batch mode was specified on the command-line or we were already closing, exit now.
if (m_bBatchMode || m_bClosing)
Close(true);
// If using auto size with render to main, reset the application size.
if (SConfig::GetInstance().m_LocalCoreStartupParameter.bRenderToMain &&
SConfig::GetInstance().m_LocalCoreStartupParameter.bRenderWindowAutoSize)
SetSize(SConfig::GetInstance().m_LocalCoreStartupParameter.iWidth,
SConfig::GetInstance().m_LocalCoreStartupParameter.iHeight);
m_GameListCtrl->Enable();
m_GameListCtrl->Show();
m_GameListCtrl->SetFocus();
UpdateGUI();
}
void CFrame::DoRecordingSave()
@ -1568,7 +1581,7 @@ void CFrame::OnLoadLastState(wxCommandEvent& event)
void CFrame::OnSaveFirstState(wxCommandEvent& WXUNUSED(event))
{
if (Core::GetState() != Core::CORE_UNINITIALIZED)
if (Core::IsRunningAndStarted())
State::SaveFirstSaved();
}
@ -1626,6 +1639,7 @@ void CFrame::UpdateGUI()
bool Initialized = Core::IsRunning();
bool Running = Core::GetState() == Core::CORE_RUN;
bool Paused = Core::GetState() == Core::CORE_PAUSE;
bool Stopping = Core::GetState() == Core::CORE_STOPPING;
bool RunningWii = Initialized && SConfig::GetInstance().m_LocalCoreStartupParameter.bWii;
bool RunningGamecube = Initialized && !SConfig::GetInstance().m_LocalCoreStartupParameter.bWii;
@ -1772,8 +1786,8 @@ void CFrame::UpdateGUI()
{
// Game has been loaded, enable the pause button
if (m_ToolBar)
m_ToolBar->EnableTool(IDM_PLAY, true);
GetMenuBar()->FindItem(IDM_PLAY)->Enable(true);
m_ToolBar->EnableTool(IDM_PLAY, !Stopping);
GetMenuBar()->FindItem(IDM_PLAY)->Enable(!Stopping);
// Reset game loading flag
m_bGameLoading = false;

View File

@ -254,6 +254,7 @@ enum
IDM_PANIC,
IDM_KEYSTATE,
IDM_WINDOWSIZEREQUEST,
IDM_STOPPED,
IDM_HOST_MESSAGE,
IDM_MPANEL, ID_STATUSBAR,

View File

@ -37,6 +37,7 @@
#include "Common/Logging/LogManager.h"
#include "Core/ConfigManager.h"
#include "Core/Core.h"
#include "Core/CoreParameter.h"
#include "Core/Movie.h"
#include "Core/HW/Wiimote.h"
@ -455,6 +456,7 @@ int DolphinApp::OnExit()
VideoBackend::ClearList();
SConfig::Shutdown();
LogManager::Shutdown();
Core::Shutdown();
delete m_locale;

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@ -131,7 +131,7 @@ void Host_SetWiiMoteConnectionState(int _State) {}
void X11_MainLoop()
{
bool fullscreen = SConfig::GetInstance().m_LocalCoreStartupParameter.bFullscreen;
while (Core::GetState() == Core::CORE_UNINITIALIZED)
while (!Core::IsRunning())
updateMainFrameEvent.Wait();
Display *dpy = XOpenDisplay(0);

View File

@ -246,7 +246,7 @@ VideoConfigDiag::VideoConfigDiag(wxWindow* parent, const std::string &title, con
szr_basic->Add(label_backend, 1, wxALIGN_CENTER_VERTICAL, 5);
szr_basic->Add(choice_backend, 1, 0, 0);
if (Core::GetState() != Core::CORE_UNINITIALIZED)
if (Core::IsRunning())
{
label_backend->Disable();
choice_backend->Disable();
@ -291,7 +291,7 @@ VideoConfigDiag::VideoConfigDiag(wxWindow* parent, const std::string &title, con
szr_display->Add(label_display_resolution, 1, wxALIGN_CENTER_VERTICAL, 0);
szr_display->Add(choice_display_resolution);
if (Core::GetState() != Core::CORE_UNINITIALIZED)
if (Core::IsRunning())
{
label_display_resolution->Disable();
choice_display_resolution->Disable();
@ -328,9 +328,8 @@ VideoConfigDiag::VideoConfigDiag(wxWindow* parent, const std::string &title, con
szr_other->Add(CreateCheckBox(page_general, _("Hide Mouse Cursor"), wxGetTranslation(hide_mouse_cursor_desc), SConfig::GetInstance().m_LocalCoreStartupParameter.bHideCursor));
szr_other->Add(render_to_main_cb = CreateCheckBox(page_general, _("Render to Main Window"), wxGetTranslation(render_to_main_win_desc), SConfig::GetInstance().m_LocalCoreStartupParameter.bRenderToMain));
if (Core::GetState() != Core::CORE_UNINITIALIZED)
if (Core::IsRunning())
render_to_main_cb->Disable();
}
@ -576,7 +575,7 @@ VideoConfigDiag::VideoConfigDiag(wxWindow* parent, const std::string &title, con
wxCheckBox* const cb_prog_scan = new wxCheckBox(page_advanced, wxID_ANY, _("Enable Progressive Scan"));
RegisterControl(cb_prog_scan, wxGetTranslation(prog_scan_desc));
cb_prog_scan->Bind(wxEVT_CHECKBOX, &VideoConfigDiag::Event_ProgressiveScan, this);
if (Core::GetState() != Core::CORE_UNINITIALIZED)
if (Core::IsRunning())
cb_prog_scan->Disable();
cb_prog_scan->SetValue(SConfig::GetInstance().m_LocalCoreStartupParameter.bProgressive);

View File

@ -86,7 +86,7 @@ protected:
VideoBackend* new_backend = g_available_video_backends[ev.GetInt()];
if (g_video_backend != new_backend)
{
bool do_switch = Core::GetState() == Core::CORE_UNINITIALIZED;
bool do_switch = !Core::IsRunning();
if (new_backend->GetName() == "Software Renderer")
{
do_switch = (wxYES == wxMessageBox(_("Software rendering is an order of magnitude slower than using the other backends.\nIt's only useful for debugging purposes.\nDo you really want to enable software rendering? If unsure, select 'No'."),