Resources

Mwmr

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)

fifo1 = Memr("first_fifo",
             4, # Width, in 32-bit words, this is block size
             64) # Depth, in number of blocks

Lock

Simple mutex, implemented through spin locks.

lock1 = Lock("first_lock")

Barrier

Synchronization point between tasks. All tasks connected to a barrier must wait for it before going any further.

barr = Barrier("sync")

Memspace

Shared (or not) memory declaration, may be used to have global memory space shared between tasks.

memsp = Memspace("mem_name", 32768)

Const

Constant integer values.

cex = Const(1)