1c0cf5f4f9
Add a bool member 'last_read' to the fifo_client_handler structure, which is set to true on a successful read. This is used by raw_read as follows. When raw_read is called, it first locates the writer (if any) for which last_read is true. raw_read tries to read from that writer and returns if there is input available. Otherwise, it proceeds to poll all the writers, as before. The effect of this is that if a writer writes some data that is only partially read, the next attempt to read will continue to read from the same writer. This should reduce the interleaving of output from different writers.
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