refactor: replace RecursiveMutex cs_sendProcessing
with Mutex
#25597
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The mutex
cs_sendProcessing
is currently only acquired at one location in the code:bitcoin/src/net.cpp
Lines 1998 to 2001 in 7d258ee
apparently with the intention to execute the method for sending messages (
NetEventsInterface::SendMessages(...)
) in serial order, in the case that we ever had more than one message handling thread. With no possibility to re-acquire the mutex in the same thread, there is no reason for it to be a RecursiveMutex, so we can change it to an ordinary Mutex instead.(An alternative would be to just get rid of the mutex, as it currently doesn't serve any purpose, as long as we only have one message handling thread.)