add noDuplicate#
authorSimon Marlow <simonmar@microsoft.com>
Tue, 6 Mar 2007 14:31:12 +0000 (14:31 +0000)
committerSimon Marlow <simonmar@microsoft.com>
Tue, 6 Mar 2007 14:31:12 +0000 (14:31 +0000)
This primop ensures that the current computation is not being
duplicated, by calling threadPaused().  The idea is to use it inside
unsafePerformIO/unsafeInterleaveIO (see #986).


No differences found