Safe Haskell	None
Language	Haskell2010

GHC.Runtime.Interpreter.Types

Description

Types used by the runtime interpreter

Synopsis

data Interp
- = ExternalInterp !IServConfig !IServ
- | InternalInterp
newtype IServ = IServ (MVar IServState)
data IServInstance = IServInstance {
- iservPipe :: !Pipe
- iservProcess :: !ProcessHandle
- iservLookupSymbolCache :: !(UniqFM FastString (Ptr ()))
- iservPendingFrees :: ![HValueRef]
}
data IServConfig = IServConfig {
- iservConfProgram :: !String
- iservConfOpts :: ![String]
- iservConfProfiled :: !Bool
- iservConfDynamic :: !Bool
- iservConfHook :: !(Maybe (CreateProcess -> IO ProcessHandle))
- iservConfTrace :: IO ()
}
data IServState
- = IServPending
- | IServRunning !IServInstance

Documentation

data Interp Source #

Runtime interpreter

Constructors

ExternalInterp !IServConfig !IServ	External interpreter
InternalInterp	Internal interpreter

newtype IServ 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

IServ (MVar IServState)

data IServInstance Source #

External interpreter instance

Constructors

IServInstance
Fields iservPipe :: !Pipe iservProcess :: !ProcessHandle iservLookupSymbolCache :: !(UniqFM FastString (Ptr ())) iservPendingFrees :: ![HValueRef] Values that need to be freed before the next command is sent. Threads can append values to this list asynchronously (by modifying the IServ state MVar).

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

data IServState Source #

State of an external interpreter

Constructors

IServPending	Not spawned yet
IServRunning !IServInstance	Running