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Fix potential deadlock when accessing a shared pasteboard from a background thread #310

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Fix potential deadlock when accessing a shared pasteboard from a background thread #310

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12 changes: 10 additions & 2 deletions Adjust/ADJAdditions/UIDevice+ADJAdditions.m
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Original file line number Diff line number Diff line change
Expand Up @@ -102,8 +102,16 @@ - (NSString *)adjFbAttributionId {
#if ADJUST_NO_UIPASTEBOARD || TARGET_OS_TV
return @"";
#else
NSString *result = [UIPasteboard pasteboardWithName:@"fb_app_attribution" create:NO].string;
if (result == nil) return @"";
__block NSString *result;
void(^resultRetrievalBlock)(void) = ^{
result = [UIPasteboard pasteboardWithName:@"fb_app_attribution" create:NO].string;
if (result == nil) {
result = @"";
}
};
[NSThread isMainThread] ?
resultRetrievalBlock() :
dispatch_sync(dispatch_get_main_queue(), resultRetrievalBlock);
return result;
#endif
}
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