#4857: Add Control.Exception.allowInterrupt
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Reporter: simonmar | Owner:
Type: proposal | Status: new
Priority: normal | Milestone:
Component: libraries/base | Version: 7.0.1
Keywords: | Testcase:
Blockedby: | Difficulty:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: None/Unknown
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Description changed by simonmar:
Old description:
> This proposal is to add the following function to `Control.Exception`:
>
> {{{
> -- | When invoked inside 'mask', this function allows a blocked
> -- asynchronous exception to be raised, if one exists. It is
> -- equivalent to performing an interruptible operation (see
> -- #interruptible#), but does not involve any actual blocking.
> --
> -- When called outside 'mask', or inside 'uninterruptibleMask', this
> -- function has no effect.
> allowInterrupt :: IO ()
> allowInterrupt = unsafeUnmask $ return ()
> }}}
>
> Some discussion leading up to this can be found in #3837.
>
> Discussion period: 2 weeks (until 5 Jan 2011)
New description:
This proposal is to add the following function to `Control.Exception`:
{{{
-- | When invoked inside 'mask', this function allows a blocked
-- asynchronous exception to be raised, if one exists. It is
-- equivalent to performing an interruptible operation (see
-- #interruptible#), but does not involve any actual blocking.
--
-- When called outside 'mask', or inside 'uninterruptibleMask', this
-- function has no effect.
allowInterrupt :: IO ()
allowInterrupt = unsafeUnmask $ return ()
}}}
Some discussion leading up to this can be found in #3837.
Discussion period: 3 weeks (until 12 Jan 2011)
--
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4857#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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