-----------------------------------------------------------------------------
-- No: #hide, because bits of this module are exposed by the stm package.
+-- However, we don't want this module to be the home location for the
+-- bits it exports, we'd rather have Control.Concurrent and the other
+-- higher level modules be the home. Hence:
+
-- #not-home
module GHC.Conc
( ThreadId(..)
fdSet wakeup readfds
maxfd <- buildFdSets 0 readfds writefds reqs
- -- check the current time and wake up any thread in threadDelay whose
- -- timeout has expired. Also find the timeout value for the select() call.
- now <- getTicksOfDay
- (delays', timeout) <- getDelay now ptimeval delays
-
-- perform the select()
- let do_select = do
+ let do_select delays = do
+ -- check the current time and wake up any thread in
+ -- threadDelay whose timeout has expired. Also find the
+ -- timeout value for the select() call.
+ now <- getTicksOfDay
+ (delays', timeout) <- getDelay now ptimeval delays
+
res <- c_select ((max wakeup maxfd)+1) readfds writefds
nullPtr timeout
if (res == -1)
then do
err <- getErrno
if err == eINTR
- then do_select
- else return res
+ then do_select delays'
+ else return (res,delays')
else
- return res
- res <- do_select
+ return (res,delays')
+
+ (res,delays') <- do_select delays
-- ToDo: check result
b <- takeMVar prodding