From: simonmar <unknown>
Date: Wed, 26 Feb 2003 10:22:14 +0000 (+0000)
Subject: [project @ 2003-02-26 10:22:14 by simonmar]
X-Git-Tag: nhc98-1-18-release~727
X-Git-Url: http://git.megacz.com/?a=commitdiff_plain;h=d33bd45975c7a9dd54ae04ea1bcf890fb428b863;p=ghc-base.git

[project @ 2003-02-26 10:22:14 by simonmar]
Add a note about the problem with forkProcess, for the time being.
---

diff --git a/GHC/Conc.lhs b/GHC/Conc.lhs
index cb57319..cf15836 100644
--- a/GHC/Conc.lhs
+++ b/GHC/Conc.lhs
@@ -161,6 +161,9 @@ that only the desired thread is running after the fork().
 
 The stopped threads are /not/ garbage collected! This behaviour may change in
 future releases.
+
+NOTE: currently, main threads are not stopped in the child process.
+To work around this problem, call 'forkProcessPrim' from the main thread. 
 -}
 
 forkProcessPrim :: IO Int
@@ -169,6 +172,9 @@ forkProcessPrim = IO $ \s -> case (forkProcess# s) of (# s1, id #) -> (# s1, (I#
 {- | 'forkProcess' is a wrapper around 'forkProcessPrim' similar to the one found in
 "Posix.forkProcess" which returns a Maybe-type. The child receives @Nothing@, the
 parent @Just (pid::Int)@. In case of an error, an exception is thrown.
+
+NOTE: currently, main threads are not stopped in the child process.
+To work around this problem, call 'forkProcess' from the main thread. 
 -}
 
 forkProcess :: IO (Maybe Int)