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uikit: Use SDL_RunOnMainThread instead of dispatch_sync for message boxes.

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Reference Issue #12741.
This commit is contained in:
Ryan C. Gordon
2025-05-01 18:28:53 -04:00
parent 691cc5bb5e
commit 193b0c8963
1 changed files with 16 additions and 17 deletions
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33
src/video/uikit/SDL_uikitmessagebox.m
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@@ -124,31 +124,30 @@ static BOOL UIKit_ShowMessageBoxAlertController(const SDL_MessageBoxData *messag
return YES;
}
static void UIKit_ShowMessageBoxImpl(const SDL_MessageBoxData *messageboxdata, int *buttonID, int *result)
typedef struct UIKit_ShowMessageBoxData
{
const SDL_MessageBoxData *messageboxdata;
int *buttonID;
bool result;
} UIKit_ShowMessageBoxData;
static void SDLCALL UIKit_ShowMessageBoxMainThreadCallback(void *userdata)
{
@autoreleasepool {
if (UIKit_ShowMessageBoxAlertController(messageboxdata, buttonID)) {
*result = true;
} else {
*result = SDL_SetError("Could not show message box.");
}
UIKit_ShowMessageBoxData *data = (UIKit_ShowMessageBoxData *) userdata;
data->result = UIKit_ShowMessageBoxAlertController(data->messageboxdata, data->buttonID);
}
}
bool UIKit_ShowMessageBox(const SDL_MessageBoxData *messageboxdata, int *buttonID)
{
@autoreleasepool {
__block int result = true;
if ([NSThread isMainThread]) {
UIKit_ShowMessageBoxImpl(messageboxdata, buttonID, &result);
} else {
dispatch_sync(dispatch_get_main_queue(), ^{
UIKit_ShowMessageBoxImpl(messageboxdata, buttonID, &result);
});
}
return result;
UIKit_ShowMessageBoxData data = { messageboxdata, buttonID, false };
if (!SDL_RunOnMainThread(UIKit_ShowMessageBoxMainThreadCallback, &data, true)) {
return false;
} else if (!data.result) {
return SDL_SetError("Could not show message box.");
}
return true;
}
#endif // SDL_VIDEO_DRIVER_UIKIT