= Multi writer - multi reader fifos =

Special kind of fifos where any number of producers and readers may be "connected". This fifos provides the following features:
 * Transfers are done in indivisible blocks of contiguous data
 * Read/Write operations are done in packets of one or more blocks
 * Blocks may be read/written in between of others, even in one write operation
 * Blocks always arrive in order (even if not contiguous because of preceding point)

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