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Rahul Muttineni rahulmutt

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rahulmutt / GHCVM - Proposal.md
Last active September 18, 2018 21:23
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rahulmutt / Interacting with Java in GHCVM.md
Last active November 22, 2017 22:27
Documents how the Java Foreign Function Interface will look in GHCVM, a Haskell to JVM compiler.
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rahulmutt / GHCVM - HSoC Summary.md
Created September 11, 2016 19:38

Overview of GHCVM

GHCVM has successfully accomplished the goals of Summer of Haskell:

  • compile GHC 7.10.3's Haskell to Java bytecode
  • access the vast Java ecosystem within Haskell
  • port the base library

The initial proposal can be found here.

Motivation

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rahulmutt / Extends.hs
Created November 17, 2016 06:20
{-# LANGUAGE ConstraintKinds, DataKinds, TypeFamilies, UndecidableInstances, MultiParamTypeClasses, FlexibleInstances, FlexibleContexts, PolyKinds, TypeOperators, NoImplicitPrelude #-}
module Extends where
import Prelude hiding (Extends,Class,Object,Super)
data Object = Object
deriving Show
data Defined = Yes | No
type family Super (a :: *) :: *
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rahulmutt / eta.prof
Created December 12, 2016 11:48
Mon Dec 12 17:15 2016 Time and Allocation Profiling Report (Final)
eta +RTS -p -RTS Main.hs
total time = 19.02 secs (19021 ticks @ 1000 us, 1 processor)
total alloc = 11,610,411,048 bytes (excludes profiling overheads)
COST CENTRE MODULE %time %alloc
sourceHandle.loop Data.Conduit.Binary 20.7 7.0
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rahulmutt / JVM.md
Created December 14, 2016 17:58
JVM Class Naming

The file 2.jar contains a file 2.class that was generated manually (without javac). You can download it here.

Running java -jar 2.jar works perfectly and should output

Hello World!

Here is the output of running javap -c -v 2.class:

Classfile 2.class
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rahulmutt / Rendering.md
Last active January 14, 2017 04:46
FFI Import Generation

Rendering.hs:

{-# LANGUAGE FlexibleContexts #-}
module JavaFX.Rendering where

import Java
import JavaFX.Types

type Render a = Java GraphicsContext a
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rahulmutt / Queens Performance.md
Last active January 23, 2017 03:11

In https://github.com/rahulmutt/nofib, run using:

nofib-runner imaginary/queens --run --jmh="-wi 10 -i 10" --way="-O2"

Queens Solution:

-- !!! count the number of solutions to the "n queens" problem.
-- (grabbed from LML dist)
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rahulmutt / Queens Performance2.md
Last active January 23, 2017 03:37

Replacing imaginary/queens with the implemenation below in rahulmutt/nofib:

{-# LANGUAGE BangPatterns #-}

-- solution by Oystein Kolsrud
-- https://www.youtube.com/watch?v=I2tMmsZC1ZU
okToAdd :: Int -> [Int] -> Bool
okToAdd q qs = all (okToAddDirection q qs) [succ, pred, id]
    where
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rahulmutt / Hexdump.md
Created January 28, 2017 14:43
Corrupted Jars

Hexdump of the corrupted jar:

00000000: 504b 0304 1400 0000 0800 4072 3c4a f0b8  PK........@r<J..
00000010: e8a0 7901 0000 8a02 0000 2000 1400 6768  ..y....... ...gh
00000020: 637a 6d70 7269 6d2f 6768 632f 4d61 6769  czmprim/ghc/Magi
00000030: 6324 696e 6c69 6e65 2e63 6c61 7373 0100  c$inline.class..
00000040: 1000 8a02 0000 0000 0000 7901 0000 0000  ..........y.....
00000050: 0000 7d91 4b4b c350 1085 cfd8 b469 637c  ..}.KK.P.....ic|
00000060: b6b6 bedf 8fd6 8a51 5c2a 8214 8482 dda8  .......Q\*......
00000070: 745b aef5 1a83 691a 925b b0fe 2637 7551 t[....i..[..&amp;7uQ