Re: Defining a custom newByteArray primop that uses calloc?

Brandon Simmons wrote:

In my tests, using calloc from:

https://hackage.haskell.org/package/missing-foreign-0.1.1/docs/Foreign-Marsh...

was about twice as fast as allocating and zeroing the same amount of memory with `newByteArray` + any of `copy/set/fillMutableByteArray` (all three were nearly identical). Is there a way I can reasonably define my own `newByteArray` that uses calloc?

FWIW here are a couple of the benchmarks I'm working with in criterion:

arrTestSet :: Int -> IO () arrTestSet len = do let eBytes = (P.sizeOf (undefined::Int))*len a <- P.newAlignedPinnedByteArray

Why pinned memory? Erik -- ---------------------------------------------------------------------- Erik de Castro Lopo http://www.mega-nerd.com/