chore: prepare v0.0.3

chore: prepare v0.0.2
fix: deps
2024-07-17 12:08:07 -05:00 · 2024-07-16 12:56:22 -05:00 · 2024-07-16 12:56:14 -05:00 · 2024-07-16 12:55:45 -05:00 · 2024-07-10 13:48:09 -05:00 · 2024-06-23 19:46:13 -05:00
35 changed files with 2545 additions and 1012 deletions
--- a/.tool-versions
+++ b/.tool-versions
@ -1 +1,2 @@
 purescript 0.15.15
 bun 1.1.18
--- a/675
+++ b/675
@ -0,0 +1,675 @@
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    under certain conditions; type `show c' for details.
 The hypothetical commands `show w' and `show c' should show the appropriate
 parts of the General Public License.  Of course, your program's commands
 might be different; for a GUI interface, you would use an "about box".
  You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU GPL, see
 <https://www.gnu.org/licenses/>.
  The GNU General Public License does not permit incorporating your program
 into proprietary programs.  If your program is a subroutine library, you
 may consider it more useful to permit linking proprietary applications with
 the library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.  But first, please read
 <https://www.gnu.org/licenses/why-not-lgpl.html>.
--- a/README.md
+++ b/README.md
@ -1,28 +1,16 @@
-# purescript-cbor-stream
+# purescript-threading
 Concurrency primitives inspired by python's multithreading and rust, allowing for
 predictable concurrency with `Aff`
-Type-safe bindings for the streaming API of `cbor-x`
+## Use Cases
 * Create a background worker thread
 * Communicate between threads (`Threading.Channel`)
 * Limit access to a resource _(eg. a database connection pool, file handle)_ to 1 concurrent actor (`Threading.RWLock`, `Threading.Mutex`)
 * Coordinate concurrent threads, waiting for some common goal to be reached before continuing (`Threading.Barrier`)
 * Create a pool of concurrent "threads" that can pull work from a queue, with graceful exiting and error handling
 * Remotely kill a thread, or non-blockingly ask if it has exited
 ## Installing
 ```bash
-spago install cbor-stream
+spago install threading
 {bun|yarn|npm|pnpm} install cbor-x
 ```
 ## Examples
 ### Convert a cbor-encoded dataset to csv
 ```purescript
 import Pipes.Node.Stream as Pipes.Stream
 import Pipes.Node.FS as Pipes.FS
 import Pipes.Node.Buffer as Pipes.Buffer
 import Pipes.CBOR as Pipes.CBOR
 import Pipes.CSV as Pipes.CSV
 import Pipes.Prelude ((>->))
 import Pipes.Prelude as Pipes
 Pipes.runEffect
  $ Pipes.FS.read "foo.bin"
    >-> Pipes.CBOR.decode @{id :: Int, name :: String}
    >-> Pipes.CSV.stringify
    >-> Pipes.FS.write "foo.csv"
 ```
--- a/bun/prepare.js
+++ b/bun/prepare.js
@ -22,8 +22,8 @@ await writeFile("./spago.yaml", spagonew);
 const readme = await readFile("./README.md", "utf8");
 const readmenew = readme.replace(
-  /packages\/purescript-cbor-stream\/.+?\//g,
+  /packages\/purescript-threading\/.+?\//g,
-  `/packages/purescript-cbor-stream/${ver}/`,
+  `/packages/purescript-threading/${ver}/`,
 );
 await writeFile("./README.md", readmenew);
--- a/package.json
+++ b/package.json
@ -1,12 +1,10 @@
 {
-  "name": "purescript-cbor-stream",
+  "name": "purescript-threading",
-  "version": "v1.0.4",
+  "version": "v0.0.3",
  "type": "module",
-  "dependencies": {
+  "dependencies": {},
    "cbor-x": "^1.5.9",
    "decimal.js": "^10.4.3"
  },
  "devDependencies": {
-    "typescript": "^5.4.5"
+    "typescript": "^5.4.5",
    "bun": "1.1.18"
  }
 }
--- a/spago.lock
+++ b/spago.lock
--- a/spago.yaml
+++ b/spago.yaml
@ -1,53 +1,42 @@
 package:
-  name: cbor-stream
+  name: threading
  publish:
-    version: '1.0.4'
+    version: '0.0.3'
    license: 'GPL-3.0-or-later'
    location:
      githubOwner: 'cakekindel'
-      githubRepo: 'purescript-cbor-stream'
+      githubRepo: 'purescript-threading'
  build:
    strict: true
-    pedanticPackages: true
+    # pedanticPackages: true
  dependencies:
    - aff: ">=7.1.0 <8.0.0"
    - arrays: ">=7.3.0 <8.0.0"
-    - bifunctors: ">=6.0.0 <7.0.0"
+    - catenable-lists: ">=7.0.0 <8.0.0"
-    - datetime: ">=6.1.0 <7.0.0"
+    - control: ">=6.0.0 <7.0.0"
    - effect: ">=4.0.0 <5.0.0"
    - either: ">=6.1.0 <7.0.0"
-    - exceptions: ">=6.0.0 <7.0.0"
+    - exceptions: ">=6.1.0 <7.0.0"
    - filterable: ">=5.0.0 <6.0.0"
    - foldable-traversable: ">=6.0.0 <7.0.0"
    - foreign: ">=7.0.0 <8.0.0"
    - foreign-object: ">=4.1.0 <5.0.0"
    - js-bigints: ">=2.2.1 <3.0.0"
    - js-date: ">=8.0.0 <9.0.0"
    - js-maps: ">=0.1.2 <0.2.0"
    - maybe: ">=6.0.0 <7.0.0"
    - node-buffer: ">=9.0.0 <10.0.0"
    - node-event-emitter: ">=3.0.0 <4.0.0"
    - node-stream-pipes: ">=1.6.0 <2.0.0"
    - node-streams: ">=9.0.0 <10.0.0"
    - nullable: ">=6.0.0 <7.0.0"
    - ordered-collections: ">=3.2.0 <4.0.0"
    - pipes: ">=8.0.0 <9.0.0"
    - prelude: ">=6.0.1 <7.0.0"
-    - record: ">=4.0.0 <5.0.0"
+    - refs: ">=6.0.0 <7.0.0"
    - simple-json: ">=9.0.0 <10.0.0"
    - tailrec: ">=6.1.0 <7.0.0"
    - transformers: ">=6.0.0 <7.0.0"
    - tuples: ">=7.0.0 <8.0.0"
    - typelevel-prelude: ">=7.0.0 <8.0.0"
    - unsafe-coerce: ">=6.0.0 <7.0.0"
  test:
    main: Test.Main
    dependencies:
      - console
-      - gen
+      - datetime
-      - node-fs
+      - newtype
-      - node-zlib
+      - parallel
      - precise-datetime
      - quickcheck
      - simple-json
      - spec
      - tailrec
 workspace:
  packageSet:
    registry: 53.3.0
  extraPackages: {}
--- a/src/Data.CBOR.purs
+++ b/src/Data.CBOR.purs
@ -1,158 +0,0 @@
 module Data.CBOR where
 import Prelude
 import Control.Monad.Error.Class (liftMaybe, try)
 import Control.Monad.Except (ExceptT(..), withExcept)
 import Control.Monad.Except.Trans (runExceptT)
 import Data.Array as Array
 import Data.DateTime (DateTime)
 import Data.Either (Either(..), isRight)
 import Data.Foldable (class Foldable)
 import Data.FoldableWithIndex (foldlWithIndex)
 import Data.JSDate (JSDate)
 import Data.JSDate as JSDate
 import Data.Map (Map)
 import Data.Maybe (Maybe(..))
 import Data.Symbol (class IsSymbol, reflectSymbol)
 import Data.Traversable (traverse)
 import Foreign (F, Foreign, ForeignError(..), readArray, readNullOrUndefined, unsafeReadTagged, unsafeToForeign)
 import Foreign.Index (readProp)
 import JS.BigInt (BigInt)
 import JS.Map (Map) as JS
 import JS.Map as JS.Map
 import Prim.Row as Row
 import Prim.RowList (class RowToList, Cons, Nil, RowList)
 import Record (get)
 import Record.Builder (Builder)
 import Record.Builder as Builder
 import Simple.JSON (class ReadForeign, class WriteForeign, readImpl, writeImpl)
 import Type.Prelude (Proxy(..))
 class ReadCBOR :: Type -> Constraint
 class ReadCBOR a where
  readCBOR :: Foreign -> F a
 class WriteCBOR :: Type -> Constraint
 class WriteCBOR a where
  writeCBOR :: a -> Foreign
 instance ReadCBOR Foreign where
  readCBOR = pure
 else instance (RowToList r rl, ReadCBORFields rl () r) => ReadCBOR (Record r) where
  readCBOR o = do
    flip Builder.build {} <$> getFields (Proxy @rl) o
 else instance ReadCBOR BigInt where
  readCBOR = unsafeReadTagged "BigInt"
 else instance ReadCBOR JSDate where
  readCBOR = unsafeReadTagged "Date"
 else instance ReadCBOR DateTime where
  readCBOR a = do
    date :: JSDate <- readCBOR a
    liftMaybe (pure $ ForeignError $ "Invalid DateTime: " <> show date) $ JSDate.toDateTime date
 else instance ReadCBOR a => ReadCBOR (Array a) where
  readCBOR a = do
    raws :: Array Foreign <- readArray a
    traverse readCBOR raws
 else instance ReadCBOR a => ReadCBOR (Maybe a) where
  readCBOR a = do
    isNull <- isRight <$> try (readNullOrUndefined a)
    if isNull then
      pure Nothing
    else
      Just <$> readCBOR @a a
 else instance (ReadCBOR v) => ReadCBOR (JS.Map String v) where
  readCBOR map = do
    map' :: JS.Map String Foreign <- unsafeReadTagged "Map" map
    foldlWithIndex (\k b v -> do
      map'' <- b
      v' <- readCBOR v
      pure $ JS.Map.insert k v' map''
    ) (pure JS.Map.empty) map'
 else instance (ReadForeign a) => ReadCBOR a where
  readCBOR = readImpl
 instance WriteCBOR Foreign where
  writeCBOR = identity
 else instance (RowToList r rl, WriteCBORFields rl r () to) => WriteCBOR (Record r) where
  writeCBOR rec = unsafeToForeign $ Builder.build (writeImplFields (Proxy @rl) rec) {}
 else instance WriteCBOR BigInt where
  writeCBOR = unsafeToForeign
 else instance WriteCBOR JSDate where
  writeCBOR = unsafeToForeign
 else instance WriteCBOR DateTime where
  writeCBOR = unsafeToForeign <<< JSDate.fromDateTime
 else instance (WriteCBOR k, WriteCBOR v) => WriteCBOR (JS.Map k v) where
  writeCBOR = unsafeToForeign
 else instance (WriteCBOR a) => WriteCBOR (Array a) where
  writeCBOR as = unsafeToForeign $ writeCBOR <$> as
 else instance (Foldable f, WriteCBOR a) => WriteCBOR (f a) where
  writeCBOR as = unsafeToForeign $ writeCBOR $ Array.fromFoldable as
 else instance (JS.Map.EncodeKey k, WriteCBOR k, WriteCBOR v) => WriteCBOR (Map k v) where
  writeCBOR map = writeCBOR $ foldlWithIndex (\k m v -> JS.Map.insert k v m) JS.Map.empty map
 else instance (WriteForeign a) => WriteCBOR a where
  writeCBOR = writeImpl
 applyEither :: forall e a b. Semigroup e => Either e (a -> b) -> Either e a -> Either e b
 applyEither (Left e) (Right _) = Left e
 applyEither (Left e1) (Left e2) = Left (e1 <> e2)
 applyEither (Right _) (Left e) = Left e
 applyEither (Right fun) (Right a) = Right (fun a)
 exceptTApply :: forall a b e m. Semigroup e => Applicative m => ExceptT e m (a -> b) -> ExceptT e m a -> ExceptT e m b
 exceptTApply fun a = ExceptT $ applyEither
  <$> runExceptT fun
  <*> runExceptT a
 class ReadCBORFields (xs :: RowList Type) (from :: Row Type) (to :: Row Type)
  | xs -> from to where
  getFields :: Proxy xs
    -> Foreign
    -> F (Builder (Record from) (Record to))
 instance readFieldsCons ::
  ( IsSymbol name
  , ReadCBOR ty
  , ReadCBORFields tail from from'
  , Row.Lacks name from'
  , Row.Cons name ty from' to
  ) => ReadCBORFields (Cons name ty tail) from to where
  getFields _ obj = (compose <$> first) `exceptTApply` rest
    where
      first = do
        value <- withExcept' (readCBOR =<< readProp name obj)
        pure $ Builder.insert nameP value
      rest = getFields tailP obj
      nameP = Proxy :: Proxy name
      tailP = Proxy :: Proxy tail
      name = reflectSymbol nameP
      withExcept' = withExcept <<< map $ ErrorAtProperty name
 instance readFieldsNil ::
  ReadCBORFields Nil () () where
  getFields _ _ =
    pure identity
 class WriteCBORFields (rl :: RowList Type) row (from :: Row Type) (to :: Row Type)
  | rl -> row from to where
  writeImplFields :: forall g. g rl -> Record row -> Builder (Record from) (Record to)
 instance consWriteCBORFields ::
  ( IsSymbol name
  , WriteCBOR ty
  , WriteCBORFields tail row from from'
  , Row.Cons name ty whatever row
  , Row.Lacks name from'
  , Row.Cons name Foreign from' to
  ) => WriteCBORFields (Cons name ty tail) row from to where
  writeImplFields _ rec = result
    where
      namep = Proxy :: Proxy name
      value = writeCBOR $ get namep rec
      tailp = Proxy :: Proxy tail
      rest = writeImplFields tailp rec
      result = Builder.insert namep value <<< rest
 instance nilWriteCBORFields ::
  WriteCBORFields Nil row () () where
  writeImplFields _ _ = identity
--- a/src/Effect.CBOR.js
+++ b/src/Effect.CBOR.js
@ -1,7 +0,0 @@
 import {decode, encode} from 'cbor-x'
 /** @type {(a: Buffer) => () => unknown} */
 export const decodeImpl = buf => () => decode(buf)
 /** @type {(a: unknown) => () => Buffer} */
 export const encodeImpl = buf => () => encode(buf)
--- a/src/Effect.CBOR.purs
+++ b/src/Effect.CBOR.purs
@ -1,21 +0,0 @@
 module Effect.CBOR where
 import Prelude
 import Control.Monad.Error.Class (liftEither)
 import Control.Monad.Except (runExcept)
 import Data.Bifunctor (lmap)
 import Data.CBOR (class ReadCBOR, class WriteCBOR, readCBOR, writeCBOR)
 import Effect (Effect)
 import Effect.Exception (error)
 import Foreign (Foreign)
 import Node.Buffer (Buffer)
 foreign import decodeImpl :: Buffer -> Effect Foreign
 foreign import encodeImpl :: Foreign -> Effect Buffer
 decode :: forall a. ReadCBOR a => Buffer -> Effect a
 decode = (liftEither <<< lmap (error <<< show) <<< runExcept <<< readCBOR) <=< decodeImpl
 encode :: forall a. WriteCBOR a => a -> Effect Buffer
 encode = encodeImpl <<< writeCBOR
--- a/src/JS.Finalization.js
+++ b/src/JS.Finalization.js
@ -0,0 +1,8 @@
 /** @type {<T>(cb: (t: T) => void) => () => FinalizationRegistry<T>} */
 export const registry = (cb) => () => new FinalizationRegistry(cb);
 /** @type {<T>(f: FinalizationRegistry<T>) => <O extends WeakKey>(a: WeakRef<O>) => (b: T) => () => void} */
 export const register = (fin) => (a) => (b) => () => fin.register(a, b);
 /** @type {<T>(f: FinalizationRegistry<T>) => <O extends WeakKey>(a: WeakRef<O>) => () => void} */
 export const unregister = (fin) => (a) => () => fin.unregister(a);
--- a/src/JS.Finalization.purs
+++ b/src/JS.Finalization.purs
@ -0,0 +1,15 @@
 module JS.Drop where
 import Prelude
 import Effect (Effect)
 import JS.WeakRef (WeakRef)
 type Registry_ a = Registry a Unit
 foreign import data Registry :: Type -> Type -> Type
 foreign import registry :: forall a b. (b -> Effect Unit) -> Effect (Registry a b)
 foreign import register :: forall a b. Registry a b -> WeakRef a -> b -> Effect Unit
 foreign import unregister :: forall a b. Registry a b -> WeakRef a -> Effect Unit
--- a/src/JS.WeakRef.js
+++ b/src/JS.WeakRef.js
@ -0,0 +1,5 @@
 /** @type {<T extends WeakKey>(_: T) => () => WeakRef<T>} */
 export const make = (a) => () => new WeakRef(a);
 /** @type {<T extends WeakKey>(_: WeakRef<T>) => () => T | undefined} */
 export const _deref = (a) => () => a.deref();
--- a/src/JS.WeakRef.purs
+++ b/src/JS.WeakRef.purs
@ -0,0 +1,17 @@
 module JS.WeakRef where
 import Prelude
 import Data.Maybe (Maybe)
 import Data.Nullable (Nullable)
 import Data.Nullable as Nullable
 import Effect (Effect)
 foreign import data WeakRef :: Type -> Type
 foreign import make :: forall a. a -> Effect (WeakRef a)
 deref :: forall a. WeakRef a -> Effect (Maybe a)
 deref = map Nullable.toMaybe <<< _deref
 foreign import _deref :: forall a. WeakRef a -> Effect (Nullable a)
--- a/src/Node.Stream.CBOR.Decode.js
+++ b/src/Node.Stream.CBOR.Decode.js
@ -1,7 +0,0 @@
 import { DecoderStream } from "cbor-x";
 /** @type {(s: import('cbor-x').Options) => () => DecoderStream} */
 export const makeImpl = (c) => () => new DecoderStream({useRecords: false, ...c});
 /** @type {(s: DecoderStream) => () => unknown | null} */
 export const readImpl = (p) => () => p.read();
--- a/src/Node.Stream.CBOR.Decode.purs
+++ b/src/Node.Stream.CBOR.Decode.purs
@ -1,52 +0,0 @@
 module Node.Stream.CBOR.Decode where
 import Prelude hiding (join)
 import Data.Nullable (Nullable)
 import Effect (Effect)
 import Effect.Uncurried (mkEffectFn1)
 import Foreign (Foreign)
 import Foreign.Object (Object)
 import Node.Buffer (Buffer)
 import Node.EventEmitter (EventHandle(..))
 import Node.EventEmitter.UtilTypes (EventHandle1)
 import Node.Stream (Read, Stream, Write)
 import Node.Stream.CBOR.Options (F32, Options, prepareOptions)
 import Node.Stream.Object (Transform) as Object
 import Prim.Row (class Nub, class Union)
 import Unsafe.Coerce (unsafeCoerce)
 data CBORDecode
 -- | CBOR decoding transform stream
 -- |
 -- | Accepts unencoded `Buffer` chunks, and transforms them
 -- | to JS values.
 type CBORDecoder :: Row Type -> Type
 type CBORDecoder r = Stream (read :: Read, write :: Write, cbor :: CBORDecode | r)
 make
  :: forall r missing extra minimal minimalExtra
   . Union r missing (Options extra)
  => Union r (useFloat32 :: F32) minimal
  => Nub minimal (useFloat32 :: F32 | minimalExtra)
  => { | r }
  -> Effect (CBORDecoder ())
 make = makeImpl <<< prepareOptions @r @missing
 toObjectStream :: forall r. CBORDecoder r -> Object.Transform Buffer Foreign
 toObjectStream = unsafeCoerce
 -- | `data` event. Emitted when a CSV record has been parsed.
 dataH :: forall a. EventHandle1 (CBORDecoder a) Foreign
 dataH = EventHandle "data" mkEffectFn1
 -- | FFI
 foreign import makeImpl :: forall r. Foreign -> Effect (Stream r)
 -- | FFI
 foreign import readImpl :: forall r. Stream r -> Effect (Nullable Foreign)
 -- | FFI
 recordToForeign :: forall r. Record r -> Object Foreign
 recordToForeign = unsafeCoerce
--- a/src/Node.Stream.CBOR.Encode.js
+++ b/src/Node.Stream.CBOR.Encode.js
@ -1,7 +0,0 @@
 import { EncoderStream } from "cbor-x";
 /** @type {(s: import('cbor-x').Options) => () => EncoderStream} */
 export const makeImpl = (c) => () => new EncoderStream({useRecords: false, ...c});
 /** @type {(s: EncoderStream) => (a: unknown) => () => void} */
 export const writeImpl = (s) => (a) => () => s.write(a);
--- a/src/Node.Stream.CBOR.Encode.purs
+++ b/src/Node.Stream.CBOR.Encode.purs
@ -1,49 +0,0 @@
 module Node.Stream.CBOR.Encode where
 import Prelude
 import Data.CBOR (class WriteCBOR, writeCBOR)
 import Effect (Effect)
 import Foreign (Foreign)
 import Foreign.Object (Object)
 import Node.Buffer (Buffer)
 import Node.Stream (Read, Stream, Write)
 import Node.Stream.CBOR.Options (F32, Options, prepareOptions)
 import Node.Stream.Object (Transform) as Object
 import Prim.Row (class Nub, class Union)
 import Unsafe.Coerce (unsafeCoerce)
 data CBOREncode
 type CBOREncoder :: Row Type -> Type
 type CBOREncoder r = Stream (read :: Read, write :: Write, csv :: CBOREncode | r)
 foreign import makeImpl :: forall r. Foreign -> Effect (Stream r)
 foreign import writeImpl :: forall r. Stream r -> Foreign -> Effect Unit
 recordToForeign :: forall r. Record r -> Object Foreign
 recordToForeign = unsafeCoerce
 -- | Create a raw Transform stream that accepts chunks of `Array String`,
 -- | and transforms them into string CSV rows.
 -- |
 -- | Requires an ordered array of column names.
 make
  :: forall r missing extra minimal minimalExtra
   . Union r missing (Options extra)
  => Union r (useFloat32 :: F32) minimal
  => Nub minimal (useFloat32 :: F32 | minimalExtra)
  => { | r }
  -> Effect (CBOREncoder ())
 make = makeImpl <<< prepareOptions @r @missing
 -- | Convert the raw stream to a typed ObjectStream
 toObjectStream :: CBOREncoder () -> Object.Transform Foreign Buffer
 toObjectStream = unsafeCoerce
 -- | Write a record to a CSVStringifier.
 -- |
 -- | The record will be emitted on the `Readable` end
 -- | of the stream as a string chunk.
 write :: forall a r. WriteCBOR a => CBOREncoder r -> a -> Effect Unit
 write s a = writeImpl s $ writeCBOR a
--- a/src/Node.Stream.CBOR.Options.js
+++ b/src/Node.Stream.CBOR.Options.js
@ -1,11 +0,0 @@
 import {FLOAT32_OPTIONS} from 'cbor-x'
 /** @type {<F32>(o: {round: (_a: F32) => boolean, fit: (_a: F32) => boolean, always: (_a: F32) => boolean}) => (f: F32) => FLOAT32_OPTIONS} */
 export const f32ToConst = ({round, fit, always}) => a => 
  round(a)
  ? FLOAT32_OPTIONS.ALWAYS
  : fit(a)
  ? FLOAT32_OPTIONS.DECIMAL_FIT
  : round(a)
  ? FLOAT32_OPTIONS.DECIMAL_ROUND
  : FLOAT32_OPTIONS.NEVER
--- a/src/Node.Stream.CBOR.Options.purs
+++ b/src/Node.Stream.CBOR.Options.purs
@ -1,50 +0,0 @@
 module Node.Stream.CBOR.Options where
 import Prelude
 import Foreign (Foreign, unsafeToForeign)
 import Prim.Row (class Nub, class Union)
 import Record (merge, modify)
 import Type.Prelude (Proxy(..))
 data F32
  = F32Always
  | F32DecimalRound
  | F32DecimalFit
  | F32Never
 derive instance Eq F32
 foreign import data CBORStruct :: Type
 foreign import f32ToConst :: {always :: F32 -> Boolean, round :: F32 -> Boolean, fit :: F32 -> Boolean} -> F32 -> Foreign
 type Options r =
  ( useRecords :: Boolean
  , structures :: Array CBORStruct
  , structuredClone :: Boolean
  , mapsAsObject :: Boolean
  , useFloat32 :: F32
  , alwaysUseFloat :: Boolean
  , pack :: Boolean
  , variableMapSize :: Boolean
  , copyBuffers :: Boolean
  , bundleStrings :: Boolean
  , useTimestamp32 :: Boolean
  , largeBigIntToFloat :: Boolean
  , useTag259ForMaps :: Boolean
  , tagUint8Array :: Boolean
  , int64AsNumber :: Boolean
  | r
  )
 prepareOptions
  :: forall @r @missing extra minimal minimalExtra
   . Union r missing (Options extra)
  => Union r (useFloat32 :: F32) minimal
  => Nub minimal (useFloat32 :: F32 | minimalExtra)
  => { | r }
  -> Foreign
 prepareOptions a =
  unsafeToForeign
  $ modify (Proxy @"useFloat32") (f32ToConst {fit: eq F32DecimalFit, round: eq F32DecimalRound, always: eq F32Always})
  $ merge a {useFloat32: F32Never}
--- a/src/Pipes.CBOR.purs
+++ b/src/Pipes.CBOR.purs
@ -1,52 +0,0 @@
 module Pipes.CBOR where
 import Prelude
 import Control.Monad.Error.Class (class MonadThrow, liftEither)
 import Control.Monad.Except (runExcept)
 import Control.Monad.Rec.Class (class MonadRec, forever)
 import Data.Bifunctor (lmap)
 import Data.CBOR (class ReadCBOR, class WriteCBOR, readCBOR, writeCBOR)
 import Data.Maybe (Maybe)
 import Effect.Aff.Class (class MonadAff)
 import Effect.Class (liftEffect)
 import Effect.Exception (Error, error)
 import Node.Buffer (Buffer)
 import Node.Stream.CBOR.Decode as CBOR.Decode
 import Node.Stream.CBOR.Encode as CBOR.Encode
 import Pipes (await, yield, (>->))
 import Pipes.Core (Pipe)
 import Pipes.Node.Stream as Pipes.Stream
 -- | Transforms buffer chunks of a CBOR file to parsed values
 -- | of type `a`.
 decode
  :: forall m @a
   . MonadRec m
  => MonadAff m
  => MonadThrow Error m
  => ReadCBOR a
  => Pipe (Maybe Buffer) (Maybe a) m Unit
 decode = do
  raw <- liftEffect $ CBOR.Decode.make {}
  let
    unmarshal = forever do
      r <- await
      yield =<< liftEither (lmap (error <<< show) $ runExcept $ readCBOR @a r)
    parser = Pipes.Stream.fromTransform $ CBOR.Decode.toObjectStream raw
  parser >-> Pipes.Stream.inEOS unmarshal
 -- | Encode purescript values as CBOR buffers
 encode
  :: forall m a
   . MonadAff m
  => MonadThrow Error m
  => MonadRec m
  => WriteCBOR a
  => Pipe (Maybe a) (Maybe Buffer) m Unit
 encode = do
  raw <- liftEffect $ CBOR.Encode.make {}
  let
    printer = Pipes.Stream.fromTransform $ CBOR.Encode.toObjectStream raw
    marshal = forever $ yield =<< (writeCBOR <$> await)
  Pipes.Stream.inEOS marshal >-> printer
--- a/src/Threading.Ath.purs
+++ b/src/Threading.Ath.purs
@ -0,0 +1 @@
 module Threading.Ath where
--- a/src/Threading.Barrier.purs
+++ b/src/Threading.Barrier.purs
@ -0,0 +1,35 @@
 module Threading.Barrier (Barrier, barrier, wait) where
 import Prelude
 import Data.Array as Array
 import Data.Either (Either(..))
 import Data.Foldable (sequence_)
 import Effect (Effect)
 import Effect.Aff (Aff)
 import Effect.Aff as Aff
 import Effect.Class (liftEffect)
 import Effect.Ref (Ref)
 import Effect.Ref as Ref
 import Type.Function (type ($))
 -- | A barrier enables multiple threads to synchronize the beginning of some computation.
 data Barrier = Barrier Int (Ref $ Array $ Effect Unit)
 -- | Create a new barrier that will only unblock waiting threads
 -- | when `n` threads are waiting (including this one)
 barrier :: Int -> Effect Barrier
 barrier n = Barrier n <$> Ref.new []
 -- | Wait until the provided number of threads
 -- | are also `wait`ing
 wait :: Barrier -> Aff Unit
 wait (Barrier n wakersRef) = do
  wakers <- liftEffect $ Ref.read wakersRef
  if n <= 1 then
    pure unit
  else if Array.length wakers == (n - 1) then
    liftEffect $ sequence_ wakers
  else Aff.makeAff \cb -> do
    Ref.modify_ (_ <> [ cb $ Right unit ]) wakersRef
    pure $ Aff.nonCanceler
--- a/src/Threading.Channel.purs
+++ b/src/Threading.Channel.purs
@ -0,0 +1,163 @@
 module Threading.Channel
  ( Channel
  , Sender
  , Receiver
  , recv
  , tryRecv
  , send
  , peek
  , tryPeek
  , channel
  , sender
  , receiver
  ) where
 import Prelude
 import Control.Monad.Error.Class (throwError)
 import Data.Array as Array
 import Data.CatList (CatList)
 import Data.CatList as CatList
 import Data.Either (Either(..))
 import Data.Maybe (Maybe(..), isJust, maybe)
 import Data.Traversable (for)
 import Data.Tuple (fst)
 import Data.Tuple.Nested ((/\))
 import Data.Witherable (wither)
 import Effect (Effect)
 import Effect.Aff (Aff)
 import Effect.Aff as Aff
 import Effect.Class (liftEffect)
 import Effect.Exception (error)
 import JS.WeakRef (WeakRef)
 import JS.WeakRef as WeakRef
 import Threading.Data.Mutex (Mutex)
 import Threading.Data.Mutex as Mutex
 import Type.Function (type ($))
 -- | A multi-producer multi-consumer channel for communication
 -- | between threads.
 -- |
 -- | Senders will broadcast messages to all living receivers,
 -- | doing nothing if there are no receivers.
 -- |
 -- | Receivers can wait for messages to be sent. Messages that
 -- | are sent while the receiver is not waiting will be buffered,
 -- | and `recv`d in the order they were sent.
 data Channel a = Channel (Mutex $ Array $ WeakRef $ Receiver a)
 data Sender a = Sender (Channel a)
 data Receiver a = Receiver (Mutex $ Maybe (a -> Effect Unit)) (Mutex $ CatList a)
 -- | Create a new channel
 channel :: forall a. Effect (Channel a)
 channel = do
  recvs <- Mutex.mutex []
  pure $ Channel recvs
 -- | Create a new message receiver
 receiver :: forall a. Channel a -> Aff (Receiver a)
 receiver (Channel recvsRef) = do
  g <- Mutex.lock recvsRef
  liftEffect do
    queue <- Mutex.mutex CatList.empty
    wake <- Mutex.mutex Nothing
    recvs <- Mutex.read g
    let r = Receiver wake queue
    recvWeak <- WeakRef.make r
    Mutex.write g $ Array.cons recvWeak recvs
    Mutex.release g
    pure r
 -- | Create a new message sender
 sender :: forall a. Channel a -> Effect (Sender a)
 sender c = pure $ Sender c
 -- | Send a message to all living receivers
 send :: forall a. Sender a -> a -> Aff Unit
 send (Sender (Channel recvsRef)) a = do
  recvsG <- Mutex.lock recvsRef
  recvWeaks <- liftEffect $ Mutex.read recvsG
  recvs <- liftEffect $ wither WeakRef.deref recvWeaks
  void $ for recvs \(Receiver wakeRef queueRef) -> do
    wakeG <- Mutex.lock wakeRef
    wake <- liftEffect $ Mutex.read wakeG
    queueG <- Mutex.lock queueRef
    head /\ tail <-
      liftEffect (Mutex.read queueG)
        <#> CatList.uncons
        <#> maybe (a /\ CatList.empty) (\(head /\ tail) -> head /\ CatList.snoc tail a)
    let
      q = CatList.cons head tail
    liftEffect do
      maybe (Mutex.write queueG q) (\f -> Mutex.write queueG tail *> f head) wake
      Mutex.release wakeG
      Mutex.release queueG
  liftEffect $ Mutex.release recvsG
 -- | Read a queued message and pop it from the queue.
 -- |
 -- | If no queued messages have been sent, returns Nothing.
 tryRecv :: forall a. Receiver a -> Aff (Maybe a)
 tryRecv (Receiver _ queueRef) = do
  queueG <- Mutex.lock queueRef
  queueM <- CatList.uncons <$> liftEffect (Mutex.read queueG)
  for queueM \(a /\ tail) -> liftEffect $ Mutex.write queueG tail *> Mutex.release queueG $> a
 -- | Block until a message is sent, and pop it from the queue.
 -- |
 -- | If a message has been sent since the
 -- | last call to `recv`, then it will
 -- | be immediately popped & returned.
 recv :: forall a. Receiver a -> Aff a
 recv (Receiver wakeRef queueRef) = do
  wakeG <- Mutex.lock wakeRef
  queueG <- Mutex.lock queueRef
  liftEffect
    $ whenM (isJust <$> Mutex.read wakeG)
    $ throwError
    $ error "Receiver has been shared between multiple fibers, which is not supported."
  queueM <- liftEffect $ CatList.uncons <$> Mutex.read queueG
  case queueM of
    Just (a /\ tail) -> liftEffect do
      Mutex.write queueG tail
      Mutex.release wakeG
      Mutex.release queueG
      pure a
    Nothing -> Aff.makeAff \cb -> do
      Mutex.write wakeG $ Just $ cb <<< Right
      Mutex.release wakeG
      Mutex.release queueG
      pure $ Aff.Canceler $ const $ Mutex.put wakeRef Nothing
 -- | Read a queued message without altering the queue.
 -- |
 -- | If no queued messages have been sent, returns Nothing.
 tryPeek :: forall a. Receiver a -> Aff (Maybe a)
 tryPeek (Receiver _ queueRef) = map fst <$> CatList.uncons <$> Mutex.get queueRef
 -- | Block until a message is sent, and read
 -- | it without removing it from the queue.
 -- |
 -- | If a message has been sent since the
 -- | last call to `recv`, then it will
 -- | be immediately returned.
 peek :: forall a. Receiver a -> Aff a
 peek (Receiver wakeRef queueRef) = do
  wakeG <- Mutex.lock wakeRef
  queueM <- CatList.uncons <$> Mutex.get queueRef
  liftEffect
    $ whenM (isJust <$> Mutex.read wakeG)
    $ throwError
    $ error "Receiver has been shared between multiple fibers, which is not supported."
  case queueM of
    Just (a /\ _) -> liftEffect $ Mutex.release wakeG $> a
    Nothing -> Aff.makeAff \cb -> do
      Mutex.write wakeG $ Just $ cb <<< Right
      Mutex.release wakeG
      pure $ Aff.Canceler $ const $ Mutex.put wakeRef Nothing
--- a/src/Threading.Data.Mutex.js
+++ b/src/Threading.Data.Mutex.js
@ -0,0 +1,133 @@
 /**
 * @template T
 * @typedef {(g: Guard<T>) => () => void}
 * Waker
 */
 /** @template T */
 class Guard {
  released = false;
  /**
   * @param {Mutex<T>} mutex
   * @param {() => void} onExplicitRelease
   */
  constructor(mutex, onExplicitRelease) {
    this.mutex = mutex;
    this.cb = onExplicitRelease;
  }
  read() {
    if (this.released) {
      throw new Error("Guard#read after explicit release");
    }
    return this.mutex.a;
  }
  /** @param {T} a */
  write(a) {
    if (this.released) {
      throw new Error("Guard#write after explicit release");
    }
    this.mutex.a = a;
  }
  release() {
    if (!this.released) {
      this.released = true;
      this.cb();
    }
  }
 }
 /** @template T */
 class Mutex {
  /** @type {WeakRef<Guard<T>> | undefined} */
  guard = undefined;
  /** @type {Array<(g: Guard<T>) => () => void>} */
  wakers = [];
  /** @type {FinalizationRegistry<undefined>} */
  cleanup = new FinalizationRegistry(() => this._guardReleased());
  /**
   * @param {T} a
   */
  constructor(a) {
    this.a = a;
  }
  _guardReleased() {
    this.guard = undefined;
    const wake = this.wakers.shift();
    if (wake) {
      wake(this._newGuard())();
    }
  }
  _newGuard() {
    const g = new Guard(this, () => {
      if (!this.guard) throw new Error("unreachable");
      this.cleanup.unregister(this.guard);
      this._guardReleased();
    });
    this.guard = new WeakRef(g);
    this.cleanup.register(g, undefined);
    return g;
  }
  locked() {
    return !!this.guard;
  }
  /** @param {Waker<T>} cb */
  lock(cb) {
    if (!this.guard) {
      cb(this._newGuard())();
      return undefined;
    } else {
      this.wakers.push(cb);
      return cb;
    }
  }
  /** @param {Waker<T>} cb */
  releaseWaker(cb) {
    const ix = this.wakers.indexOf(cb);
    if (ix > -1) {
      this.wakers.splice(ix, 1);
    }
  }
  tryLock() {
    if (!this.guard) {
      return this._newGuard();
    }
  }
 }
 /** @type {<T>(t: T) => () => Mutex<T>} */
 export const _make = (a) => () => new Mutex(a);
 /** @type {<T>(mutex: Mutex<T>) => (cb: Waker<T>) => () => Waker<T> | undefined} */
 export const _lock = (mutex) => (cb) => () => mutex.lock(cb);
 /** @type {<T>(mutex: Mutex<T>) => () => boolean} */
 export const _locked = (mutex) => () => mutex.locked();
 /** @type {<T>(mutex: Mutex<T>) => () => Guard<T> | undefined} */
 export const _tryLock = (mutex) => () => mutex.tryLock();
 /** @type {<T>(mutex: Mutex<T>) => (cb: Waker<T>) => () => void} */
 export const _releaseWaker = (mutex) => (cb) => () => mutex.releaseWaker(cb);
 /** @type {<T>(guard: Guard<T>) => () => void} */
 export const _guardRelease = (g) => () => g.release();
 /** @type {<T>(guard: Guard<T>) => () => T} */
 export const _guardRead = (g) => () => g.read();
 /** @type {<T>(guard: Guard<T>) => (t: T) => () => void} */
 export const _guardWrite = (g) => (a) => () => g.write(a);
--- a/src/Threading.Data.Mutex.purs
+++ b/src/Threading.Data.Mutex.purs
@ -0,0 +1,140 @@
 -- | A Mutex allows any number of threads to share mutable
 -- | state, with at most 1 thread having read or write access
 -- | at a time.
 -- |
 -- | Threads can access the data with `lock` or `tryLock`,
 -- | which both return a `Guard`.
 -- |
 -- | The holder of a `Guard` is guaranteed exclusive read &
 -- | write access to the data contained in the `Mutex`.
 module Threading.Data.Mutex
  ( Mutex
  , Guard
  , mutex
  , lock
  , tryLock
  , locked
  , release
  , modify
  , modify_
  , write
  , read
  , get
  , put
  ) where
 import Prelude
 import Data.Either (Either(..))
 import Data.Maybe (Maybe(..))
 import Data.Nullable (Nullable)
 import Data.Nullable as Nullable
 import Effect (Effect)
 import Effect.Aff (Aff)
 import Effect.Aff as Aff
 import Effect.Class (liftEffect)
 foreign import data Waker :: Type
 foreign import data Mutex :: Type -> Type
 -- | A lock to a Mutex.
 -- |
 -- | Guards may be read from, written to, and released. Guards **must** be
 -- | released in order for other blocking threads to continue.
 -- |
 -- | _Note: If a Guard reclaimed by the garbage collector without being released,
 -- | its Mutex will notice and behave as if the Guard was explicitly released.
 -- | This will hopefully catch deadlocks caused by threads that have exited
 -- | while holding a Guard._
 foreign import data Guard :: Type -> Type
 foreign import _make :: forall a. a -> Effect (Mutex a)
 foreign import _locked :: forall a. Mutex a -> Effect Boolean
 foreign import _lock :: forall a. Mutex a -> (Guard a -> Effect Unit) -> Effect (Nullable Waker)
 foreign import _tryLock :: forall a. Mutex a -> Effect (Nullable (Guard a))
 foreign import _releaseWaker :: forall a. Mutex a -> Waker -> Effect Unit
 foreign import _guardRead :: forall a. Guard a -> Effect a
 foreign import _guardWrite :: forall a. Guard a -> a -> Effect Unit
 foreign import _guardRelease :: forall a. Guard a -> Effect Unit
 -- | Create a new Mutex
 mutex :: forall a. a -> Effect (Mutex a)
 mutex = _make
 -- | Is the Mutex currently locked?
 locked :: forall a. Mutex a -> Effect Boolean
 locked = _locked
 -- | Attempt to acquire a lock without blocking.
 -- |
 -- | If the Mutex is currently locked, this will return `Nothing`.
 tryLock :: forall a. Mutex a -> Effect (Maybe (Guard a))
 tryLock = map Nullable.toMaybe <<< _tryLock
 -- | Acquire a lock, blocking if another thread
 -- | currently holds a lock.
 -- |
 -- | If multiple threads invoke `lock`, they will
 -- | be unlocked in the order that they blocked on `lock`.
 lock :: forall a. Mutex a -> Aff (Guard a)
 lock m = Aff.makeAff \cb -> do
  waker <- Nullable.toMaybe <$> _lock m (cb <<< Right)
  pure $ case waker of
    Just w -> Aff.effectCanceler $ _releaseWaker m w
    Nothing -> Aff.nonCanceler
 -- | Take a snapshot of the value in a Mutex
 -- |
 -- | This is a shorthand for acquiring a lock, reading it,
 -- | then immediately releasing the lock.
 get :: forall a. Mutex a -> Aff a
 get m = do
  g <- lock m
  a <- liftEffect $ read g <* release g
  pure a
 -- | Write a new value to a Mutex
 -- |
 -- | This is a shorthand for acquiring a lock, writing to it,
 -- | then immediately releasing the lock.
 put :: forall a. Mutex a -> a -> Aff Unit
 put m a = do
  g <- lock m
  liftEffect $ write g a *> release g
 -- | Modify the value contained in a Mutex
 -- |
 -- | This is a shorthand for acquiring a lock,
 -- | reading from it, writing to it, then
 -- | immediately releasing it.
 -- |
 -- | Returns the new value.
 modify :: forall a. Mutex a -> (a -> a) -> Aff a
 modify m f = do
  g <- lock m
  liftEffect $ ((f <$> read g) >>= (\a -> write g a *> release g $> a))
 -- | `modify` with its return value ignored.
 modify_ :: forall a. Mutex a -> (a -> a) -> Aff Unit
 modify_ m f = void $ modify m f
 -- | Release the lock
 -- |
 -- | Attempting to `read` or `write` this `Guard`
 -- | will throw an exception.
 -- |
 -- | Repeated invocations of `release` are ignored.
 release :: forall a. Guard a -> Effect Unit
 release = _guardRelease
 -- | Read the value in the Mutex via the Guard
 read :: forall a. Guard a -> Effect a
 read = _guardRead
 -- | Write a new value into the Mutex via the Guard
 write :: forall a. Guard a -> a -> Effect Unit
 write = _guardWrite
--- a/src/Threading.Data.RWLock.purs
+++ b/src/Threading.Data.RWLock.purs
@ -0,0 +1,282 @@
 -- | A RWLock allows threads to share mutable state.
 -- |
 -- | Any number of threads can concurrently read the state,
 -- | when there isn't a thread with write access.
 -- |
 -- | Get write access with `lockWrite` or `tryLockWrite`,
 -- | or read access with `lockRead` or `tryLockRead`.
 -- |
 -- | `(try)lockWrite` returns a `WriteGuard`, which guarantees
 -- | no other threads have read or write access until it is released.
 -- |
 -- | `(try)lockRead` returns a `ReadGuard`, which guarantees
 -- | no threads have write access until it is released.
 module Threading.Data.RWLock
  ( RWLock
  , ReadGuard
  , WriteGuard
  , rwLock
  , lockWrite
  , tryLockWrite
  , lockRead
  , tryLockRead
  , locked
  , Locked(..)
  , get
  , put
  , modify
  , modify_
  , release
  , read
  , write
  , class RWLockGuard
  ) where
 import Prelude
 import Control.Alternative (guard)
 import Control.Monad.Error.Class (liftMaybe, throwError)
 import Control.Monad.Maybe.Trans (runMaybeT)
 import Control.Monad.Trans.Class (lift)
 import Data.Foldable (elem, traverse_)
 import Data.Generic.Rep (class Generic)
 import Data.Maybe (Maybe(..))
 import Data.Set (Set)
 import Data.Set as Set
 import Data.Show.Generic (genericShow)
 import Data.Traversable (traverse)
 import Effect (Effect)
 import Effect.Aff (Aff)
 import Effect.Class (liftEffect)
 import Effect.Exception (error)
 import Effect.Ref (Ref)
 import Effect.Ref as Ref
 import Threading.Data.Mutex (Mutex)
 import Threading.Data.Mutex as Mutex
 import Type.Function (type ($))
 -- | The lock state of the RWLock
 data Locked
  -- | There are no readers or writers.
  = Unlocked
  -- | There is a writer, and the RWLock is not
  -- | currently readable or writable.
  | LockedWriting
  -- | There is at least one reader, and the RWLock is not
  -- | currently writable.
  | LockedReading
 derive instance Generic Locked _
 derive instance Eq Locked
 instance Show Locked where
  show = genericShow
 newtype WriteLockHeld = WriteLockHeld (Maybe Int)
 -- | A Read-Write lock
 -- |
 -- | Ensures that there can be at most 1 thread with write
 -- | access to the data contained in the RWLock, or any
 -- | number of concurrent readers.
 data RWLock a = RWLock
  -- Guarantee that state transitions are exclusive
  { fence :: Mutex Unit
  -- Monotonically increasing guard counter
  , id :: Ref Int
  -- Condvar-style mutex indicating writability.
  --
  -- When a lock is held and the mutex contains `WriteLockHeld Nothing`, then there are 1 or more readers.
  --
  -- When a lock is held and the mutex contains `WriteLockHeld (Just <id>)`, then the lock is held by a writer.
  , w :: Mutex WriteLockHeld
  -- Ref containing the MutexGuard for `w`.
  --
  -- When a held WriteGuard or the final held ReadGuard is released, the guard contained will be
  -- released, and `Nothing` will be written here.
  , wLock :: Ref $ Maybe $ Mutex.Guard WriteLockHeld
  -- Ref tracking active readers
  , readers :: Mutex $ Set Int
  -- The data contained in the RWLock
  , state :: Ref a
  }
 -- | Internal
 -- |
 -- | Guarantees that no other `fenced` sections
 -- | run concurrently with this one.
 fenced :: forall a r. RWLock a -> Aff r -> Aff r
 fenced (RWLock { fence }) m = do
  g <- Mutex.lock fence
  m <* liftEffect (Mutex.release g)
 -- | A guard with read access to data of type `a`
 data ReadGuard a = ReadGuard Int (RWLock a)
 -- | A guard with read+write access to data of type `a`
 data WriteGuard a = WriteGuard Int (RWLock a)
 -- | Acquire a write-access lock to the data
 -- | contained in the RWLock.
 -- |
 -- | If another thread holds a `ReadGuard` or `WriteGuard`,
 -- | this will block until the data is writable.
 lockWrite :: forall a. RWLock a -> Aff (WriteGuard a)
 lockWrite rw@(RWLock { id: idRef, w, wLock }) = do
  id <- liftEffect $ Ref.modify (_ + 1) idRef
  g <- Mutex.lock w
  liftEffect $ Mutex.write g $ WriteLockHeld $ Just id
  liftEffect $ Ref.write (Just g) wLock
  pure $ WriteGuard id rw
 -- | Acquire a write-access lock to the data
 -- | contained in the RWLock.
 -- |
 -- | If another thread holds a `ReadGuard` or `WriteGuard`,
 -- | this will return Nothing.
 tryLockWrite :: forall a. RWLock a -> Aff (Maybe (WriteGuard a))
 tryLockWrite rw =
  fenced rw
    $ liftEffect (locked rw) >>= case _ of
        Unlocked -> Just <$> lockWrite rw
        _ -> pure Nothing
 -- | Acquire a read-access lock to the data
 -- | contained in the RWLock.
 -- |
 -- | If another thread holds a `WriteGuard`,
 -- | this will block until the data is readable.
 lockRead :: forall a. RWLock a -> Aff (ReadGuard a)
 lockRead rw@(RWLock { fence, id: idRef, w, wLock, readers: readersM }) = do
  fenceG <- Mutex.lock fence
  id <- liftEffect $ Ref.modify (_ + 1) idRef
  l <- liftEffect $ locked rw
  let
    block = do
      wl' <- Mutex.lock w
      liftEffect $ Mutex.write wl' (WriteLockHeld Nothing)
      liftEffect $ Ref.write (Just wl') wLock
    done = liftEffect (Mutex.release fenceG)
  fenceG' <- case l of
    LockedReading -> pure fenceG
    LockedWriting -> done *> block *> Mutex.lock fence
    Unlocked -> block $> fenceG
  readersG <- Mutex.lock readersM
  liftEffect do
    readers <- Mutex.read readersG
    Mutex.write readersG $ Set.insert id readers
    Mutex.release readersG
    Mutex.release fenceG'
  pure $ ReadGuard id rw
 -- | Acquire a read-access lock to the data
 -- | contained in the RWLock.
 -- |
 -- | If another thread holds a `WriteGuard`,
 -- | this will return Nothing.
 tryLockRead :: forall a. RWLock a -> Aff (Maybe (ReadGuard a))
 tryLockRead rw =
  liftEffect (locked rw) >>= case _ of
      LockedWriting -> pure Nothing
      _ -> Just <$> lockRead rw
 -- | Create a new RWLock
 rwLock :: forall a. a -> Effect (RWLock a)
 rwLock a = do
  fence <- Mutex.mutex unit
  id <- liftEffect $ Ref.new 0
  w <- Mutex.mutex $ WriteLockHeld Nothing
  wLock <- liftEffect $ Ref.new Nothing
  readers <- Mutex.mutex Set.empty
  state <- liftEffect $ Ref.new a
  pure $ RWLock { fence, id, w, wLock, readers, state }
 -- | Typeclass implemented by `WriteGuard` and `ReadGuard`
 -- | allowing a common `release` + `read` function (as opposed
 -- | to `releaseRead`, `releaseWrite`, etc.)
 class RWLockGuard g where
  release :: forall a. g a -> Aff Unit
  read :: forall a. g a -> Aff a
 instance RWLockGuard WriteGuard where
  release w@(WriteGuard _ rw@(RWLock { wLock })) =
    fenced rw $ void $ liftEffect do
      g <- _writeGuardOk w
      Ref.write Nothing wLock
      Mutex.release g
  read (WriteGuard id rw@(RWLock { state, wLock })) =
    fenced rw $ liftEffect do
      mg <- Ref.read wLock
      g <- liftMaybe (error "WriteGuard has been released!") mg
      WriteLockHeld id' <- Mutex.read g
      when (Just id /= id') $ throwError $ error "WriteGuard has been released!"
      Ref.read state
 instance RWLockGuard ReadGuard where
  release (ReadGuard id rw@(RWLock { wLock, readers: readersM })) =
    fenced rw $ void $ runMaybeT do
      readersG <- lift $ Mutex.lock readersM
      readers <- liftEffect $ Mutex.read readersG
      guard $ elem id readers
      liftEffect do
        Mutex.write readersG $ Set.delete id readers
        empty <- ((_ == 0) <<< Set.size) <$> Mutex.read readersG
        Mutex.release readersG
        when empty $ Ref.read wLock >>= traverse_ \g -> do
          Ref.write Nothing wLock
          Mutex.release g
  read (ReadGuard id rw@(RWLock { readers: readersM, state })) =
    fenced rw do
      readersG <- Mutex.lock readersM
      readers <- liftEffect $ Mutex.read readersG
      when (not $ elem id readers) $ throwError $ error "ReadGuard has been released!"
      liftEffect $ Mutex.release readersG
      liftEffect $ Ref.read state
 _writeGuardOk :: forall a. WriteGuard a -> Effect (Mutex.Guard WriteLockHeld)
 _writeGuardOk (WriteGuard id (RWLock { wLock })) = do
  mg <- Ref.read wLock
  g <- liftMaybe (error "WriteGuard has been released!") mg
  WriteLockHeld id' <- Mutex.read g
  when (Just id /= id') $ throwError $ error "WriteGuard has been released!"
  pure g
 -- | Writes a new value
 write :: forall a. WriteGuard a -> a -> Effect Unit
 write w@(WriteGuard _ (RWLock { state })) a = do
  void $ _writeGuardOk w
  Ref.write a state
 -- | Asks what state the RWLock is currently in
 locked :: forall a. RWLock a -> Effect Locked
 locked (RWLock { wLock }) = do
  Ref.read wLock
    >>= traverse Mutex.read
    >>= case _ of
      Nothing -> pure Unlocked
      Just (WriteLockHeld Nothing) -> pure LockedReading
      Just (WriteLockHeld (Just _)) -> pure LockedWriting
 -- | Get the value currently in the RWLock.
 -- |
 -- | Shorthand for `lockRead rw >>= (\l -> read l <* release l)`
 get :: forall a. RWLock a -> Aff a
 get rw = lockRead rw >>= (\l -> read l <* release l)
 -- | Write a new value to the RWLock.
 -- |
 -- | Shorthand for `lockWrite rw >>= (\l -> liftEffect (write l a) <* release l)`
 put :: forall a. RWLock a -> a -> Aff Unit
 put rw a = lockWrite rw >>= (\l -> liftEffect (write l a) <* release l)
 -- | Modify the value in the RWLock using the provided function.
 modify :: forall a. RWLock a -> (a -> a) -> Aff a
 modify rw f = do
  l <- lockWrite rw
  a <- f <$> read l
  liftEffect (write l a) *> release l $> a
 -- | Shorthand for `void $ modify rw f`
 modify_ :: forall a. RWLock a -> (a -> a) -> Aff Unit
 modify_ rw f = void $ modify rw f
--- a/src/Threading.Handle.purs
+++ b/src/Threading.Handle.purs
@ -0,0 +1,3 @@
 module Threading.Handle where
 data Handle = Handle
--- a/src/Threading.purs
+++ b/src/Threading.purs
@ -0,0 +1 @@
 module Threading where
--- a/test/Test/Main.purs
+++ b/test/Test/Main.purs
@ -5,10 +5,19 @@ import Prelude
 import Data.Maybe (Maybe(..))
 import Effect (Effect)
 import Effect.Aff (launchAff_)
-import Test.Pipes.CBOR as Test.Pipes.CBOR
+import Effect.Aff as Aff
 import Test.Spec (it)
 import Test.Spec.Reporter (specReporter)
 import Test.Spec.Runner (defaultConfig, runSpec')
 import Test.Threading.Barrier as Test.Threading.Barrier
 import Test.Threading.Channel as Test.Threading.Channel
 import Test.Threading.Data.Mutex as Test.Threading.Data.Mutex
 import Test.Threading.Data.RWLock as Test.Threading.Data.RWLock
 main :: Effect Unit
-main = launchAff_ $ runSpec' (defaultConfig { failFast = true, timeout = Nothing }) [ specReporter ] do
+main = launchAff_ $ Aff.supervise $ runSpec' (defaultConfig { failFast = true, timeout = Nothing }) [ specReporter ] do
-  Test.Pipes.CBOR.spec
+  Test.Threading.Data.Mutex.spec
  Test.Threading.Data.RWLock.spec
  Test.Threading.Channel.spec
  Test.Threading.Barrier.spec
  it "all tests were run" $ pure unit
--- a/test/Test/Pipes.CSV.purs
+++ b/test/Test/Pipes.CSV.purs
@ -1,87 +0,0 @@
 module Test.Pipes.CBOR where
 import Prelude
 import Control.Monad.Cont (lift)
 import Control.Monad.Gen (chooseInt)
 import Data.Array as Array
 import Data.DateTime (DateTime)
 import Data.List ((:))
 import Data.List as List
 import Data.Maybe (Maybe(..), fromJust)
 import Data.Newtype (wrap)
 import Data.PreciseDateTime (fromRFC3339String, toDateTimeLossy)
 import Data.Tuple.Nested ((/\))
 import Effect (Effect)
 import Effect.Aff (delay)
 import Effect.CBOR as CBOR
 import Effect.Class (liftEffect)
 import Node.Buffer (Buffer)
 import Node.Buffer as Buffer
 import Node.Encoding (Encoding(..))
 import Partial.Unsafe (unsafePartial)
 import Pipes (yield, (>->))
 import Pipes.CBOR as Pipes.CBOR
 import Pipes.Collect as Pipes.Collect
 import Pipes.Node.Stream as Pipes.Stream
 import Pipes.Prelude (toListM) as Pipes
 import Test.QuickCheck.Gen (randomSample')
 import Test.Spec (Spec, before, describe, it)
 import Test.Spec.Assertions (shouldEqual)
 cborHex :: String
 cborHex = "82b90002646e616d656568656e72796174c1fb41d990ee6d671aa0b90002646e616d65656a756c696f6174c1fbc1d756dad0bbb646"
 cborBuf :: Effect Buffer
 cborBuf = Buffer.fromString cborHex Hex
 exp :: Array {name :: String, t :: DateTime}
 exp =
  [{name: "henry", t: toDateTimeLossy $ unsafePartial fromJust $ fromRFC3339String $ wrap "2024-05-14T19:21:25.611Z"}
  ,{name: "julio", t: toDateTimeLossy $ unsafePartial fromJust $ fromRFC3339String $ wrap "1920-05-14T20:21:17.067Z"}
  ]
 dt :: String -> DateTime
 dt = toDateTimeLossy <<< unsafePartial fromJust <<< fromRFC3339String <<< wrap
 spec :: Spec Unit
 spec =
  describe "Pipes.CBOR" do
    it "encode" do
      bytes
        <- Pipes.Collect.toBuffer
          $ Pipes.Stream.withEOS (yield exp)
             >-> Pipes.CBOR.encode
             >-> Pipes.Stream.unEOS
      act <- liftEffect $ CBOR.decode bytes
      act `shouldEqual` exp
    describe "parse" do
      it "parses csv" do
        buf <- liftEffect $ cborBuf
        rows <- Pipes.toListM
          $ Pipes.Stream.withEOS (yield buf *> lift (delay $ wrap 10.0))
              >-> Pipes.CBOR.decode
        rows `shouldEqual` ((Just exp) : Nothing : List.Nil)
      before
        (do
          nums <- liftEffect $ randomSample' 100000 (chooseInt 0 9)
          let
            objs = (\n -> {id: n}) <$> nums
          bytes <-
            Pipes.Collect.toBuffer
            $ Pipes.Stream.withEOS (yield objs)
              >-> Pipes.CBOR.encode
              >-> Pipes.Stream.unEOS
          pure $ nums /\ bytes
        )
        $ it "parses large csv" \(nums /\ bytes) -> do
          rows <-
            Pipes.Collect.toArray
              $ Pipes.Stream.withEOS (yield bytes)
                  >-> Pipes.CBOR.decode @(Array {id :: Int})
                  >-> Pipes.Stream.unEOS
          rows `shouldEqual` [(\id -> { id }) <$> nums]
--- a/test/Test/Threading.Barrier.purs
+++ b/test/Test/Threading.Barrier.purs
@ -0,0 +1,41 @@
 module Test.Threading.Barrier where
 import Prelude
 import Data.Newtype (wrap)
 import Effect.Aff as Aff
 import Effect.Class (liftEffect)
 import Effect.Ref as Ref
 import Test.Spec (Spec, describe, it)
 import Test.Spec.Assertions (shouldEqual)
 import Threading.Barrier as Barrier
 spec :: Spec Unit
 spec =
  describe "Threading.Barrier" do
    it "creates" do
      void $ liftEffect $ Barrier.barrier 1
    it "barrer 1 >>= wait immediately resolves" do
      b <- liftEffect $ Barrier.barrier 1
      Barrier.wait b
    it "barrer only resolves when all 3 threads wait" do
      barrier <- liftEffect $ Barrier.barrier 3
      aDone <- liftEffect $ Ref.new false
      bDone <- liftEffect $ Ref.new false
      a <- Aff.forkAff do
        Barrier.wait barrier
        liftEffect $ Ref.write true aDone
      b <- Aff.forkAff do
        Barrier.wait barrier
        liftEffect $ Ref.write true bDone
      Aff.delay $ wrap 10.0
      liftEffect (Ref.read aDone) >>= shouldEqual false
      liftEffect (Ref.read bDone) >>= shouldEqual false
      Barrier.wait barrier
      Aff.joinFiber a
      Aff.joinFiber b
      liftEffect (Ref.read aDone) >>= shouldEqual true
      liftEffect (Ref.read bDone) >>= shouldEqual true
--- a/test/Test/Threading.Channel.purs
+++ b/test/Test/Threading.Channel.purs
@ -0,0 +1,91 @@
 module Test.Threading.Channel where
 import Prelude
 import Control.Monad.Rec.Class (Step(..), tailRecM)
 import Data.Array as Array
 import Data.Maybe (Maybe(..), isNothing, maybe)
 import Data.Traversable (traverse)
 import Effect.Aff as Aff
 import Effect.Class (liftEffect)
 import Effect.Console as Console
 import Test.Spec (Spec, describe, it)
 import Test.Spec.Assertions (expectError, shouldEqual)
 import Threading.Channel as Channel
 spec :: Spec Unit
 spec =
  describe "Threading.Channel" do
    describe "channel" do
      it "creates" $ liftEffect $ void $ Channel.channel
    describe "receiver" do
      it "creates" do
        c <- liftEffect $ Channel.channel
        void $ Channel.receiver c
    describe "Sender" do
      describe "send" do
        it "does nothing when no receivers" do
          c <- liftEffect $ Channel.channel
          s <- liftEffect $ Channel.sender c
          Channel.send s 0
        it "broadcasts to multiple receivers" do
          c <- liftEffect $ Channel.channel
          s <- liftEffect $ Channel.sender c
          ra <- Channel.receiver c
          rb <- Channel.receiver c
          fiber <- Aff.forkAff $ traverse Channel.recv [ ra, rb ]
          Channel.send s 100
          as <- Aff.joinFiber fiber
          as `shouldEqual` [ 100, 100 ]
    describe "Receiver" do
      describe "recv" do
        it "throws if multiple fibers blocking" do
          c <- liftEffect $ Channel.channel
          r <- Channel.receiver c
          void $ Aff.forkAff $ Channel.recv r
          expectError $ Channel.recv r
        it "recv resolves with messages in the order they were sent" do
          c <- liftEffect $ Channel.channel
          s <- liftEffect $ Channel.sender c
          r <- Channel.receiver c
          Channel.send s $ Just 1
          Channel.send s $ Just 2
          Channel.send s $ Just 3
          Channel.send s $ Just 4
          fiber <- Aff.forkAff $ flip tailRecM [] \as -> maybe (Done as) (Loop <<< Array.snoc as) <$> Channel.recv r
          Channel.send s $ Just 5
          Channel.send s Nothing
          as <- Aff.joinFiber fiber
          as `shouldEqual` [ 1, 2, 3, 4, 5 ]
        it "blocks until a message is sent" do
          c <- liftEffect $ Channel.channel
          s <- liftEffect $ Channel.sender c
          r <- Channel.receiver c
          fiber <- Aff.forkAff $ Channel.recv r
          Channel.send s 10
          a <- Aff.joinFiber fiber
          a `shouldEqual` 10
        it "immediately resolves if a message buffered" do
          c <- liftEffect $ Channel.channel
          s <- liftEffect $ Channel.sender c
          r <- Channel.receiver c
          Channel.send s 10
          a <- Channel.recv r
          a `shouldEqual` 10
      describe "tryRecv" do
        it "returns Nothing when no data has been sent" do
          c <- liftEffect $ Channel.channel
          r <- Channel.receiver c
          ma <- Channel.tryRecv r
          isNothing ma `shouldEqual` true
        it "returns Just when a message has been buffered" do
          c <- liftEffect $ Channel.channel
          s <- liftEffect $ Channel.sender c
          r <- Channel.receiver c
          Channel.send s 10
          ma <- Channel.tryRecv r
          ma `shouldEqual` (Just 10)
    describe "sender" do
      it "creates" do
        c <- liftEffect $ Channel.channel
        void $ liftEffect $ Channel.sender c
--- a/test/Test/Threading.Data.Mutex.purs
+++ b/test/Test/Threading.Data.Mutex.purs
@ -0,0 +1,157 @@
 module Test.Threading.Data.Mutex where
 import Prelude
 import Control.Monad.Error.Class (liftEither, liftMaybe)
 import Control.Parallel (parOneOf)
 import Data.Either (Either(..))
 import Data.Maybe (isNothing)
 import Data.Time.Duration (Milliseconds(..))
 import Data.Traversable (for_)
 import Effect.Aff as Aff
 import Effect.Class (liftEffect)
 import Effect.Exception (error)
 import Effect.Ref as Ref
 import Test.Spec (Spec, describe, it, pending')
 import Test.Spec.Assertions (expectError, shouldEqual)
 import Threading.Data.Mutex as Mutex
 spec :: Spec Unit
 spec =
  describe "Threading.Data.Mutex" do
    describe "mutex" do
      it "creates" $ liftEffect $ void $ Mutex.mutex 0
    describe "read" do
      it "reads the value" do
        m <- liftEffect $ Mutex.mutex 0
        g <- Mutex.lock m
        v <- liftEffect $ Mutex.read g
        v `shouldEqual` 0
      it "throws if released" do
        m <- liftEffect $ Mutex.mutex 0
        g <- Mutex.lock m
        liftEffect $ Mutex.release g
        expectError $ liftEffect $ Mutex.read g
    describe "write" do
      it "writes the value" do
        m <- liftEffect $ Mutex.mutex 0
        g <- Mutex.lock m
        liftEffect $ Mutex.write g 1
        v <- liftEffect $ Mutex.read g
        v `shouldEqual` 1
      it "throws if released" do
        m <- liftEffect $ Mutex.mutex 0
        g <- Mutex.lock m
        liftEffect $ Mutex.release g
        expectError $ liftEffect $ Mutex.write g 1
    describe "get" do
      it "yields immediately when unlocked" do
        m <- liftEffect $ Mutex.mutex 0
        val <- Mutex.get m
        val `shouldEqual` 0
      it "blocks until unlocked" do
        m <- liftEffect $ Mutex.mutex 0
        g <- Mutex.lock m
        getFiber <- Aff.forkAff $ Mutex.get m
        liftEffect $ Mutex.write g 1
        liftEffect $ Mutex.release g
        read <- Aff.joinFiber getFiber
        read `shouldEqual` 1
    describe "put" do
      it "yields immediately when unlocked" do
        m <- liftEffect $ Mutex.mutex 0
        Mutex.put m 1
        val <- Mutex.get m
        val `shouldEqual` 1
      it "blocks until unlocked" do
        m <- liftEffect $ Mutex.mutex 0
        g <- Mutex.lock m
        getFiber <- Aff.forkAff $ Mutex.put m 2
        liftEffect $ Mutex.write g 1
        liftEffect $ Mutex.release g
        Aff.joinFiber getFiber
        val <- Mutex.get m
        val `shouldEqual` 2
    describe "modify" do
      it "yields immediately when unlocked" do
        m <- liftEffect $ Mutex.mutex 0
        val <- Mutex.modify m (_ + 1)
        val `shouldEqual` 1
      it "blocks until unlocked" do
        m <- liftEffect $ Mutex.mutex 0
        g <- Mutex.lock m
        getFiber <- Aff.forkAff $ Mutex.modify m (_ * 10)
        liftEffect $ Mutex.write g 1
        liftEffect $ Mutex.release g
        val <- Aff.joinFiber getFiber
        val `shouldEqual` 10
    describe "lock" do
      it "yields immediately when unlocked" do
        m <- liftEffect $ Mutex.mutex 0
        void $ Mutex.lock m
      it "blocks when locked" do
        m <- liftEffect $ Mutex.mutex 0
        g <- Mutex.lock m
        finished <- liftEffect $ Ref.new false
        fiber <- Aff.forkAff do
          void $ Mutex.lock m
          void $ liftEffect $ Ref.write true finished
        Aff.delay $ Milliseconds 5.0
        f1 <- liftEffect $ Ref.read finished
        f1 `shouldEqual` false
        liftEffect $ Mutex.release g
        Aff.joinFiber fiber
        f2 <- liftEffect $ Ref.read finished
        f2 `shouldEqual` true
      it "locks are acquired in the order they were requested" do
        m <- liftEffect $ Mutex.mutex 0
        g <- Mutex.lock m
        a <- Aff.forkAff $ Mutex.modify_ m (_ + 1) -- 1
        b <- Aff.forkAff $ Mutex.modify_ m (_ * 10) -- 10
        c <- Aff.forkAff $ Mutex.modify_ m (_ + 10) -- 20
        d <- Aff.forkAff $ Mutex.modify_ m (_ * 10) -- 200
        liftEffect $ Mutex.release g
        for_ [ a, b, c, d ] Aff.joinFiber
        n <- Mutex.get m
        n `shouldEqual` 200
      pending' "should be (eventually) unlocked if a fiber exits without releasing the lock" do
        m <- liftEffect $ Mutex.mutex 0
        -- Fiber acquires a lock then immediately resolves without releasing.
        --
        -- When the GC reclaims the guard object, the Mutex should notice and behave
        -- as if it was explicitly released.
        void $ Aff.forkAff $ void $ Mutex.lock m
        liftEither =<< parOneOf
          [ Aff.delay (Milliseconds 20000.0) $> Left (error "timed out waiting for GC to reclaim lock")
          , Mutex.lock m $> Right unit
          ]
    describe "tryLock" do
      it "returns Just when unlocked" do
        m <- liftEffect $ Mutex.mutex 0
        void $ liftMaybe (error $ "Mutex.tryLock returned Nothing on new mutex") =<< liftEffect (Mutex.tryLock m)
      it "returns Nothing when locked" do
        m <- liftEffect $ Mutex.mutex 0
        _ <- liftMaybe (error $ "Mutex.tryLock returned Nothing on new mutex") =<< liftEffect (Mutex.tryLock m)
        g <- liftEffect (Mutex.tryLock m)
        isNothing g `shouldEqual` true
      it "returns Just after release" do
        m <- liftEffect $ Mutex.mutex 0
        g <- liftMaybe (error $ "Mutex.tryLock returned Nothing on new mutex") =<< liftEffect (Mutex.tryLock m)
        liftEffect $ Mutex.release g
        void $ liftMaybe (error $ "Mutex.tryLock returned Nothing after lock released") =<< liftEffect (Mutex.tryLock m)
    describe "locked" do
      it "is false when unlocked" do
        m <- liftEffect $ Mutex.mutex 0
        l <- liftEffect $ Mutex.locked m
        l `shouldEqual` false
      it "is true when locked" do
        m <- liftEffect $ Mutex.mutex 0
        _ <- liftMaybe (error $ "Mutex.tryLock returned Nothing on new mutex") =<< liftEffect (Mutex.tryLock m)
        l <- liftEffect $ Mutex.locked m
        l `shouldEqual` true
      it "is false after lock released" do
        m <- liftEffect $ Mutex.mutex 0
        g <- liftMaybe (error $ "Mutex.tryLock returned Nothing on new mutex") =<< liftEffect (Mutex.tryLock m)
        liftEffect $ Mutex.release g
        l' <- liftEffect $ Mutex.locked m
        l' `shouldEqual` false
--- a/test/Test/Threading.Data.RWLock.purs
+++ b/test/Test/Threading.Data.RWLock.purs
@ -0,0 +1,203 @@
 module Test.Threading.Data.RWLock where
 import Prelude
 import Control.Monad.Error.Class (liftMaybe)
 import Data.Maybe (isNothing)
 import Data.Time.Duration (Milliseconds(..))
 import Data.Traversable (for_)
 import Effect.Aff as Aff
 import Effect.Class (liftEffect)
 import Effect.Console as Console
 import Effect.Exception (error)
 import Effect.Ref as Ref
 import Test.Spec (Spec, describe, it)
 import Test.Spec.Assertions (expectError, shouldEqual)
 import Threading.Data.RWLock as RWLock
 spec :: Spec Unit
 spec =
  describe "Threading.Data.RWLock" do
    describe "rwLock" do
      it "creates" $ liftEffect $ void $ RWLock.rwLock 0
    describe "read" do
      it "reads the value" do
        m <- liftEffect $ RWLock.rwLock 0
        g <- RWLock.lockRead m
        v <- RWLock.read g
        v `shouldEqual` 0
      it "throws if released" do
        m <- liftEffect $ RWLock.rwLock 0
        g <- RWLock.lockRead m
        RWLock.release g
        expectError $ RWLock.read g
    describe "write" do
      it "writes the value" do
        m <- liftEffect $ RWLock.rwLock 0
        g <- RWLock.lockWrite m
        liftEffect $ RWLock.write g 1
        v <- RWLock.read g
        v `shouldEqual` 1
      it "throws if released" do
        m <- liftEffect $ RWLock.rwLock 0
        g <- RWLock.lockWrite m
        RWLock.release g
        expectError $ liftEffect $ RWLock.write g 1
    describe "get" do
      it "yields immediately when unlocked" do
        m <- liftEffect $ RWLock.rwLock 0
        val <- RWLock.get m
        val `shouldEqual` 0
      it "blocks until unlocked" do
        m <- liftEffect $ RWLock.rwLock 0
        g <- RWLock.lockWrite m
        getFiber <- Aff.forkAff $ RWLock.get m
        liftEffect $ RWLock.write g 1
        RWLock.release g
        read <- Aff.joinFiber getFiber
        read `shouldEqual` 1
    describe "put" do
      it "yields immediately when unlocked" do
        m <- liftEffect $ RWLock.rwLock 0
        RWLock.put m 1
        val <- RWLock.get m
        val `shouldEqual` 1
      it "blocks until unlocked" do
        m <- liftEffect $ RWLock.rwLock 0
        g <- RWLock.lockWrite m
        getFiber <- Aff.forkAff $ RWLock.put m 2
        liftEffect $ RWLock.write g 1
        RWLock.release g
        Aff.joinFiber getFiber
        val <- RWLock.get m
        val `shouldEqual` 2
    describe "modify" do
      it "yields immediately when unlocked" do
        m <- liftEffect $ RWLock.rwLock 0
        val <- RWLock.modify m (_ + 1)
        val `shouldEqual` 1
      it "blocks until unlocked" do
        m <- liftEffect $ RWLock.rwLock 0
        g <- RWLock.lockWrite m
        getFiber <- Aff.forkAff $ RWLock.modify m (_ * 10)
        liftEffect $ RWLock.write g 1
        RWLock.release g
        val <- Aff.joinFiber getFiber
        val `shouldEqual` 10
    describe "lockRead" do
      it "yields immediately when unlocked" do
        m <- liftEffect $ RWLock.rwLock 0
        void $ RWLock.lockRead m
      it "blocks when write locked" do
        m <- liftEffect $ RWLock.rwLock 0
        g <- RWLock.lockWrite m
        finished <- liftEffect $ Ref.new false
        fiber <- Aff.forkAff do
          void $ RWLock.lockRead m
          void $ liftEffect $ Ref.write true finished
        Aff.delay $ Milliseconds 5.0
        f1 <- liftEffect $ Ref.read finished
        f1 `shouldEqual` false
        RWLock.release g
        Aff.joinFiber fiber
        f2 <- liftEffect $ Ref.read finished
        f2 `shouldEqual` true
      it "does not block when read locked" do
        m <- liftEffect $ RWLock.rwLock 0
        void $ Aff.forkAff $ void $ RWLock.lockRead m
        void $ Aff.forkAff $ void $ RWLock.lockRead m
        void $ RWLock.lockRead m
        n <- RWLock.get m
        n `shouldEqual` 0
      it "blocks when write locked" do
        m <- liftEffect $ RWLock.rwLock 0
        g <- RWLock.lockWrite m
        finished <- liftEffect $ Ref.new false
        fiber <- Aff.forkAff do
          g' <- RWLock.lockRead m
          liftEffect $ Ref.write true finished
          RWLock.read g'
        liftEffect $ RWLock.write g 1
        f <- liftEffect $ Ref.read finished
        f `shouldEqual` false
        RWLock.release g
        n <- Aff.joinFiber fiber
        n `shouldEqual` 1
    describe "lockWrite" do
      it "yields immediately when unlocked" do
        m <- liftEffect $ RWLock.rwLock 0
        void $ RWLock.lockWrite m
      it "blocks when write locked" do
        m <- liftEffect $ RWLock.rwLock 0
        g <- RWLock.lockWrite m
        finished <- liftEffect $ Ref.new false
        fiber <- Aff.forkAff do
          void $ RWLock.lockWrite m
          void $ liftEffect $ Ref.write true finished
        Aff.delay $ Milliseconds 5.0
        f1 <- liftEffect $ Ref.read finished
        f1 `shouldEqual` false
        RWLock.release g
        Aff.joinFiber fiber
        f2 <- liftEffect $ Ref.read finished
        f2 `shouldEqual` true
      it "blocks when read locked" do
        m <- liftEffect $ RWLock.rwLock 0
        g <- RWLock.lockRead m
        finished <- liftEffect $ Ref.new false
        fiber <- Aff.forkAff do
          void $ RWLock.lockWrite m
          void $ liftEffect $ Ref.write true finished
        Aff.delay $ Milliseconds 5.0
        f1 <- liftEffect $ Ref.read finished
        f1 `shouldEqual` false
        RWLock.release g
        Aff.joinFiber fiber
        f2 <- liftEffect $ Ref.read finished
        f2 `shouldEqual` true
      it "locks are acquired in the order they were requested" do
        m <- liftEffect $ RWLock.rwLock 0
        g <- RWLock.lockWrite m
        a <- Aff.forkAff $ RWLock.modify_ m (_ + 1) -- 1
        b <- Aff.forkAff $ RWLock.modify_ m (_ * 10) -- 10
        c <- Aff.forkAff $ RWLock.modify_ m (_ + 10) -- 20
        d <- Aff.forkAff $ RWLock.modify_ m (_ * 10) -- 200
        RWLock.release g
        for_ [ a, b, c, d ] Aff.joinFiber
        n <- RWLock.get m
        n `shouldEqual` 200
    describe "tryLockWrite" do
      it "returns Just when unlocked" do
        m <- liftEffect $ RWLock.rwLock 0
        void $ liftMaybe (error $ "RWLock.tryLockWrite returned Nothing on new mutex") =<< RWLock.tryLockWrite m
      it "returns Nothing when locked" do
        m <- liftEffect $ RWLock.rwLock 0
        _ <- liftMaybe (error $ "RWLock.tryLockWrite returned Nothing on new mutex") =<< RWLock.tryLockWrite m
        g <- RWLock.tryLockWrite m
        isNothing g `shouldEqual` true
      it "returns Just after release" do
        m <- liftEffect $ RWLock.rwLock 0
        g <- liftMaybe (error $ "RWLock.tryLockWrite returned Nothing on new mutex") =<< RWLock.tryLockWrite m
        RWLock.release g
        void $ liftMaybe (error $ "RWLock.tryLockWrite returned Nothing after lock released") =<< RWLock.tryLockWrite m
    describe "locked" do
      it "Unlocked" do
        m <- liftEffect $ RWLock.rwLock 0
        l <- liftEffect $ RWLock.locked m
        l `shouldEqual` RWLock.Unlocked
      it "LockedWriting" do
        m <- liftEffect $ RWLock.rwLock 0
        _ <- liftMaybe (error $ "RWLock.tryLockWrite returned Nothing on new mutex") =<< RWLock.tryLockWrite m
        l <- liftEffect $ RWLock.locked m
        l `shouldEqual` RWLock.LockedWriting
      it "LockedReading" do
        m <- liftEffect $ RWLock.rwLock 0
        _ <- liftMaybe (error $ "RWLock.tryLockRead returned Nothing on new mutex") =<< RWLock.tryLockRead m
        l <- liftEffect $ RWLock.locked m
        l `shouldEqual` RWLock.LockedReading
      it "Unlocked after lock released" do
        m <- liftEffect $ RWLock.rwLock 0
        g <- liftMaybe (error $ "RWLock.tryLockWrite returned Nothing on new mutex") =<< RWLock.tryLockWrite m
        RWLock.release g
        l' <- liftEffect $ RWLock.locked m
        l' `shouldEqual` RWLock.Unlocked
Author	SHA1	Message	Date
Orion Kindel	4e1e49432d	chore: prepare v0.0.3	2024-07-17 12:08:07 -05:00
Orion Kindel	93c802067e	chore: prepare v0.0.2	2024-07-16 12:56:22 -05:00
Orion Kindel	415f88f000	fix: deps	2024-07-16 12:56:14 -05:00
Orion Kindel	a4368b944a	fix: init	2024-07-16 12:55:45 -05:00
Orion Kindel	22c966626a	docs: add LICENSE	2024-07-10 13:48:09 -05:00
Orion Kindel	5febe2f86f	chore: prepare v1.3.0	2024-06-23 19:46:13 -05:00
Orion Kindel	cf5d2c6431	fix: bump node-stream-pipes	2024-06-23 19:46:03 -05:00
Orion Kindel	b89279a5ec	chore: prepare v1.2.0	2024-06-22 19:40:56 -05:00
Orion Kindel	bf9fa5e1e9	fix: bump node-stream-pipes to 2.0.2 (big perf improvement)	2024-06-22 19:39:38 -05:00
Orion Kindel	1aab2e1dd1	chore: prepare v1.1.0	2024-06-20 15:43:39 -05:00
`@ -1 +1,2 @@`
	`purescript 0.15.15`	`purescript 0.15.15`
		`bun 1.1.18`
		`@ -0,0 +1,3 @@`
							`module Threading.Handle where`

							`data Handle = Handle`