Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

74 lines (60 sloc) 3.499 kb
!! UPDATE TODO !!
!! UPDATE BENCHMARKS !!
* custom serialization functions for lists of 'WordX's
- benchmark chunk size speedup for more complicated computations of list
elements => to be expected that we get no speedup anymore or even a
slowdown => adapt Blaze.ByteString.Builder.Word accordingly.
* fast serialization for 'Text' values (currently unpacking to 'String' is
the fastest :-/)
* implementation
- further encodings for 'Char'
- think about end-of-buffer wrapping when copying bytestrings
- toByteStringIO with accumulator capability => provide 'toByteStringIO_'
- allow buildr/foldr deforestation to happen for input to 'fromWrite<n>List'
(or whatever stream fusion framework is in place for lists)
- implement 'toByteString' with an amortized O(n) runtime using the
exponentional scaling trick. If the start size is chosen wisely this
may even be faster than 'S.pack', as the one copy per element is
cheaper than one list thunk per element. It is even likely that we can
amortize three copies per element, which allows to avoid spilling any
buffer space by doing a last compaction copy.
- we could provide builders that honor alignment restrictions, either as
builder transformers or as specialized write to builder converters. The
trick is for the driver to ensure that the buffer beginning is aligned
to the largest aligning (8 or 16 bytes?) required. This is probably the
case by default. Then we can always align a pointer in the buffer by
appropriately aligning the write pointer.
* extend tests to new functions
* benchmarks
- understand why the declarative blaze-builder version is the fastest
serializer for Word64 little-endian and big-endian
- check the cost of using `mappend` on builders instead of writes.
- show that using toByteStringIO has an advantage over toLazyByteString
- check performance of toByteStringIO
- compare speed of 'L.pack' to speed of 'toLazyByteString . fromWord8s'
* documentation
- sort out formultion: "serialization" vs. "encoding"
* check portability to Hugs
* performance:
- check if reordering 'pe' and 'pf' change performance; it seems that 'pe'
is only a reader argument while 'pf' is a state argument.
- perhaps we could improve performance by taking page size, page
alignment, and memory access alignment into account.
- detect machine endianness and use host order writes for the supported
endianness.
- introduce a type 'BoundedWrite' that encapsulates a 'Write' generator
with a bound on the number of bytes maximally written by the write.
This way we can achieve data independence for the size check by
sacrificing just a little bit of buffer space at buffer ends.
- investigate where we would profit from static bounds on number of bytes
written (e.g. to make the control flow more linear)
* testing
- port tests from 'Data.Binary.Builder' to ensure that the word writes
and builders are working correctly. I may have missed some pitfalls
about word types in Haskell during porting the functions from
'Data.Binary.Builder'.
* portability
- port to Hugs
- test lower versions of GHC
* deployment
- add source repository to 'blaze-html' and 'blaze-builder' cabal files
Jump to Line
Something went wrong with that request. Please try again.