Safe Haskell	None
Language	GHC2021

GHC.Runtime.Interpreter.Types

Contents

IServ
JSInterp

Description

Types used by the runtime interpreter

Synopsis

data Interp = Interp {
- interpInstance :: !InterpInstance
- interpLoader :: !Loader
}
data InterpInstance
- = ExternalInterp !ExtInterp
- | InternalInterp
data InterpProcess = InterpProcess {
- interpPipe :: !Pipe
- interpHandle :: !ProcessHandle
}
data ExtInterp
- = ExtIServ !IServ
- | ExtJS !JSInterp
type ExtInterpStatusVar d = MVar (InterpStatus (ExtInterpInstance d))
data ExtInterpInstance c = ExtInterpInstance {
- instProcess :: !InterpProcess
- instPendingFrees :: !(MVar [HValueRef])
- instLookupSymbolCache :: !(MVar (UniqFM FastString (Ptr ())))
- instExtra :: !c
}
data ExtInterpState cfg details = ExtInterpState {
- interpConfig :: !cfg
- interpStatus :: !(ExtInterpStatusVar details)
}
data InterpStatus inst
- = InterpPending
- | InterpRunning !inst
type IServ = ExtInterpState IServConfig ()
data IServConfig = IServConfig {
- iservConfProgram :: !String
- iservConfOpts :: ![String]
- iservConfProfiled :: !Bool
- iservConfDynamic :: !Bool
- iservConfHook :: !(Maybe (CreateProcess -> IO ProcessHandle))
- iservConfTrace :: IO ()
}
type JSInterp = ExtInterpState JSInterpConfig JSInterpExtra
data JSInterpExtra = JSInterpExtra {
- instStdIn :: !Handle
- instFinderCache :: !FinderCache
- instFinderOpts :: !FinderOpts
- instJSState :: !(MVar JSState)
- instGhciUnitId :: !UnitId
}
data JSInterpConfig = JSInterpConfig {
- jsInterpNodeConfig :: !NodeJsSettings
- jsInterpScript :: !FilePath
- jsInterpTmpFs :: !TmpFs
- jsInterpTmpDir :: !TempDir
- jsInterpLogger :: !Logger
- jsInterpCodegenCfg :: !StgToJSConfig
- jsInterpUnitEnv :: !UnitEnv
- jsInterpFinderOpts :: !FinderOpts
- jsInterpFinderCache :: !FinderCache
}
data JSState = JSState {
- jsLinkState :: !LinkPlan
- jsServerStarted :: !Bool
}
data NodeJsSettings = NodeJsSettings {
- nodeProgram :: FilePath
- nodePath :: Maybe FilePath
- nodeExtraArgs :: [String]
- nodeKeepAliveMaxMem :: Integer
}
defaultNodeJsSettings :: NodeJsSettings

Documentation

data Interp Source #

Interpreter

Constructors

Interp
Fields interpInstance :: !InterpInstance Interpreter instance (internal, external) interpLoader :: !Loader Interpreter loader

data InterpInstance Source #

Constructors

ExternalInterp !ExtInterp	External interpreter
InternalInterp	Internal interpreter

data InterpProcess Source #

Constructors

InterpProcess
Fields interpPipe :: !Pipe Pipe to communicate with the server interpHandle :: !ProcessHandle Process handle of the server

data ExtInterp Source #

Constructors

ExtIServ !IServ
ExtJS !JSInterp

type ExtInterpStatusVar d = MVar (InterpStatus (ExtInterpInstance d)) Source #

data ExtInterpInstance c Source #

Common field between native external interpreter and the JS one

Constructors

ExtInterpInstance

Fields

instProcess :: !InterpProcess
External interpreter process and its pipe (communication channel)
instPendingFrees :: !(MVar [HValueRef])
Values that need to be freed before the next command is sent. Finalizers for ForeignRefs can append values to this list asynchronously.
instLookupSymbolCache :: !(MVar (UniqFM FastString (Ptr ())))
LookupSymbol cache
instExtra :: !c
Instance specific extra fields

data ExtInterpState cfg details Source #

External interpreter

The external interpreter is spawned lazily (on first use) to avoid slowing down sessions that don't require it. The contents of the MVar reflects the state of the interpreter (running or not).

Constructors

ExtInterpState
Fields interpConfig :: !cfg interpStatus :: !(ExtInterpStatusVar details)

data InterpStatus inst Source #

Status of an external interpreter

Constructors

InterpPending	Not spawned yet
InterpRunning !inst	Running

IServ

type IServ = ExtInterpState IServConfig () Source #

data IServConfig Source #

Configuration needed to spawn an external interpreter

Constructors

IServConfig
Fields iservConfProgram :: !String External program to run iservConfOpts :: ![String] Command-line options iservConfProfiled :: !Bool Use Profiling way iservConfDynamic :: !Bool Use Dynamic way iservConfHook :: !(Maybe (CreateProcess -> IO ProcessHandle)) Hook iservConfTrace :: IO () Trace action executed after spawn

JSInterp

type JSInterp = ExtInterpState JSInterpConfig JSInterpExtra Source #

data JSInterpExtra Source #

Constructors

JSInterpExtra
Fields instStdIn :: !Handle Stdin for the process instFinderCache :: !FinderCache instFinderOpts :: !FinderOpts instJSState :: !(MVar JSState) Mutable state instGhciUnitId :: !UnitId GHCi unit-id

data JSInterpConfig Source #

Constructors

JSInterpConfig
Fields jsInterpNodeConfig :: !NodeJsSettings NodeJS settings jsInterpScript :: !FilePath Path to "ghc-interp.js" script jsInterpTmpFs :: !TmpFs jsInterpTmpDir :: !TempDir jsInterpLogger :: !Logger jsInterpCodegenCfg :: !StgToJSConfig jsInterpUnitEnv :: !UnitEnv jsInterpFinderOpts :: !FinderOpts jsInterpFinderCache :: !FinderCache

data JSState Source #

Constructors

JSState
Fields jsLinkState :: !LinkPlan Linker state of the interpreter jsServerStarted :: !Bool Is the Haskell server started?

data NodeJsSettings Source #

NodeJs configuration

Constructors

NodeJsSettings
Fields nodeProgram :: FilePath location of node.js program nodePath :: Maybe FilePath value of NODE_PATH environment variable (search path for Node modules; GHCJS used to provide some) nodeExtraArgs :: [String] extra arguments to pass to node.js nodeKeepAliveMaxMem :: Integer keep node.js (TH, GHCJSi) processes alive if they don't use more than this

defaultNodeJsSettings :: NodeJsSettings Source #