wakeUpSleepingThreads: fix off by one

The symptom of this bug is after the time of a threadDelay has
expired, the RTS does a whole slew of extra select() calls.
This should help with #1523, but it's not the whole story.

diff --git a/rts/posix/Select.c b/rts/posix/Select.c
index 57599bc..fb7f38d 100644 (file)
--- a/rts/posix/Select.c
+++ b/rts/posix/Select.c
@@ -61,7 +61,7 @@ wakeUpSleepingThreads(lnat ticks)
     rtsBool flag = rtsFalse;
 
     while (sleeping_queue != END_TSO_QUEUE &&
-          (int)(ticks - sleeping_queue->block_info.target) > 0) {
+          (int)(ticks - sleeping_queue->block_info.target) >= 0) {
        tso = sleeping_queue;
        sleeping_queue = tso->link;
        tso->why_blocked = NotBlocked;