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Araq/align.nim

Created February 27, 2016 01:51
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align.nim
const CacheLineSize = 32 # true for most archs
type
Barrier = object
entered: int
cv: Semaphore # Semaphore takes 3 words at least
when sizeof(int) < 8:
cacheAlign: array[CacheLineSize-4*sizeof(int), byte]
left: int
cacheAlign2: array[CacheLineSize-sizeof(int), byte]
interest: bool ## wether the master is interested in the "all done" event
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