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Summary of changes:
TODO | 4 ++++
src/Snap/Loader/Hint.hs | 10 +++++++++-
2 files changed, 13 insertions(+), 1 deletions(-)
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- Log -----------------------------------------------------------------
commit e007b4b327a4b34e8364d5802ab041fe363bd7e0
Author: Carl Howells <[email protected]>
Date: Wed Jun 30 09:56:42 2010 -0700
TODO
diff --git a/TODO b/TODO
index 5010138..25e13be 100644
--- a/TODO
+++ b/TODO
@@ -1,6 +1,10 @@
TODO
----
+Make the protectedActionEvaluator exception-safe.
+ -- The best approach is to just throw whatever exception
+ it catches to all the waiting threads.
+
document EVERYTHING.
-- low-level per-function documentation
-- mid-level per-module documentation
diff --git a/src/Snap/Loader/Hint.hs b/src/Snap/Loader/Hint.hs
index 89b5d78..cc607d5 100644
--- a/src/Snap/Loader/Hint.hs
+++ b/src/Snap/Loader/Hint.hs
@@ -125,7 +125,15 @@ format (WontCompile errs) =
------------------------------------------------------------------------------
--- | XXX
+-- | Create a wrapper for an action that protects the action from
+-- concurrent or rapid evaluation.
+--
+-- There will be at least the passed-in 'NominalDiffTime' delay
+-- between the finish of one execution of the action the start of the
+-- next. Concurrent calls to the wrapper, and calls within the delay
+-- period, end up with the same calculated value for a.
+--
+-- TODO: make this exception-safe
protectedActionEvaluator :: NominalDiffTime -> IO a -> IO (IO a)
protectedActionEvaluator minReEval action = do
readerContainer <- newMVar []
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