Safe Haskell | Safe-Inferred |
---|---|
Language | Haskell2010 |
Deprecated: Use System.Process from package process directly
Synopsis
- createPipe :: IO (Handle, Handle)
Documentation
createPipe :: IO (Handle, Handle) Source #
Create a pipe for interprocess communication and return a
(readEnd, writeEnd)
Handle
pair.
- WinIO Support
When this function is used with WinIO enabled it's the caller's responsibility to register the handles with the I/O manager. If this is not done the operation will deadlock. Association can be done as follows:
#if defined(IO_MANAGER_WINIO) import GHC.IO.SubSystem ((!)) import GHC.IO.Handle.Windows (handleToHANDLE) import GHC.Event.Windows (associateHandle') #endif ... #if defined (IO_MANAGER_WINIO) return () ! (do associateHandle' =handleToHANDLE <handle) #endif
Only associate handles that you are in charge of read/writing to. Do not associate handles passed to another process. It's the process's reponsibility to register the handle if it supports async access.
Since: process-1.2.1.0