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| <== Date ==> | <== Thread ==> |
|---|
| Subject: | areaDetector driver unlock/lock for doCallbacksGenericPointer() |
| From: | "Pearson, Matthew via Tech-talk" <tech-talk at aps.anl.gov> |
| To: | Mark Rivers <rivers at cars.uchicago.edu> |
| Cc: | "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov> |
| Date: | Thu, 1 Aug 2024 15:17:07 +0000 |
|
Hi Mark, In the areaDetector driver documentation it states this, for passing NDArray objects to registered plugins:
Call doCallbacksGenericPointer() so that registered clients can get the values of the new arrays. Drivers must release their
mutex by calling this->unlock() before they call doCallbacksGenericPointer(), or a deadlock can occur if the plugin makes a call to one of the driver functions. It seems to make sense, but wouldn’t that be an odd design to have a plugin call a driver function? Most drivers seem to hold the mutex while calling doCallbacksGenericPointer (at least all the ones I just checked). Cheers, Matt |