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Don't touch member variables from async dispatch. #21456

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merged 1 commit into from
Aug 1, 2022
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Don't touch member variables from async dispatch. #21456

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12 changes: 8 additions & 4 deletions src/darwin/Framework/CHIP/MTRBaseDevice.mm
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Original file line number Diff line number Diff line change
Expand Up @@ -1384,16 +1384,20 @@ - (instancetype)initWithPath:(const ConcreteEventPath &)path
{
__block NSArray * attributeReports = mAttributeReports;
mAttributeReports = nil;
__block auto attributeCallback = mAttributeReportCallback;

__block NSArray * eventReports = mEventReports;
mEventReports = nil;
if (mAttributeReportCallback && attributeReports.count) {
__block auto eventCallback = mEventReportCallback;

if (attributeCallback != nil && attributeReports.count) {
dispatch_async(mQueue, ^{
mAttributeReportCallback(attributeReports);
attributeCallback(attributeReports);
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});
}
if (mEventReportCallback && eventReports.count) {
if (eventCallback != nil && eventReports.count) {
dispatch_async(mQueue, ^{
mEventReportCallback(eventReports);
eventCallback(eventReports);
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});
}
}
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