Joey Hess 198b709561 switch to TMVars for thread safety when using the async extension ... TVars were not updated atomically, which was ok when each thread got its own External that was the only thing using these TVars. But, with the async extension, several External instances can share the same var, so it needs to be a TMVar to avoid read/write conflicts. In particular, this makes PREPARE only be sent once.		2020-08-14 14:50:09 -04:00
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AsyncExtension.hs	switch to TMVars for thread safety when using the async extension	2020-08-14 14:50:09 -04:00
Types.hs	switch to TMVars for thread safety when using the async extension	2020-08-14 14:50:09 -04:00