Modulestreamly-core-0.3.1Haskell2010

Streamly.Internal.System.IO

4 values

Packagestreamly-core-0.3.1
Exports4
LanguageHaskell2010
LicenceBSD-3-Clause
SourceIO.hs

valuedefaultChunkSize :: Int

Default maximum buffer size in bytes, for reading from and writing to IO devices, the value is 32KB minus GHC allocation overhead, which is a few bytes, so that the actual allocation is 32KB.

valuearrayPayloadSize :: Int -> Int

When we allocate a byte array of size k the allocator actually allocates memory of size k + byteArrayOverhead. arrayPayloadSize n returns the size of the array in bytes that would result in an allocation of n bytes.

valueunsafeInlineIO :: IO a -> a

valuebyteArrayOverhead :: Int

Returns the heap allocation overhead for allocating a byte array. Each heap object contains a one word header. Byte arrays contain the size of the array after the header.

See https://gitlab.haskell.org/ghc/ghc/-/wikis/commentary/rts/storage/heap-objects#arrays