semaphore-compat-2.0.1: Cross-platform abstraction for system semaphores

Safe Haskell	None
Language	Haskell2010

System.Semaphore.Internal.Posix

Description

POSIX backend: semaphores implemented on top of Unix domain sockets.

Documentation

data ClientSemaphore Source #

Constructors

ClientSemaphore
Fields clientSemaphoreName :: !SemaphoreName semSocketPath :: !FilePath

data ServerSemaphore Source #

Constructors

ServerSemaphore
Fields serverClientSemaphore :: !ClientSemaphore serverThreadId :: !ThreadId serverPool :: !(TVar Int) serverState :: !(MVar ServerState)

newtype SemaphoreToken Source #

Constructors

SemaphoreToken
Fields tokenFdLock :: MVar Fd

waitOnSemaphore :: HasCallStack => ClientSemaphore -> IO SemaphoreToken Source #

tryWaitOnSemaphore :: HasCallStack => ClientSemaphore -> IO (Maybe SemaphoreToken) Source #

releaseSemaphoreToken :: HasCallStack => SemaphoreToken -> IO () Source #

destroyClientSemaphore :: ClientSemaphore -> IO () Source #

destroyServerSemaphore :: ServerSemaphore -> IO () Source #

getSemaphoreValue :: ServerSemaphore -> IO Int Source #

create_sem :: SemaphoreName -> Int -> IO (Either SemaphoreError ServerSemaphore) Source #

open_sem_raw :: SemaphoreName -> IO (Either SemaphoreError ClientSemaphore) Source #

get_time_seed :: IO Int Source #