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The reader in MultiVehicleReader uses a history of up to 2000 samples (it only buffers the most recent 2000 samples). This is due to performance reasons and because take() might not return all received messages immediately (it sometimes needs to be called more than once internally). The value of 2000 samples might not be enough depending on your scenario. In that case, i.e. if messages of some vehicles are sometimes missing because the buffer is not large enough, you might have to increase this value. |
Writer.hpp
https://gitgithub.rwth-aachen.de/CPM/Project/Lab/software/-com/embedded-software-laboratory/cpm_lab/blob/master/cpm_lib/include/cpm/Writer.hpp
This is a basic DDS Writer, which only offers information regarding matched subscriptions and a write() function. It does not require the user to know or understand DDS implementation details and is thus recommended whenever a basic writer is required in your application. Setting QoS parameters is available through the constructor.
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