diff options
Diffstat (limited to 'rts/win32')
| -rw-r--r-- | rts/win32/IOManager.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/rts/win32/IOManager.c b/rts/win32/IOManager.c index 65f5d4cf99..0091f23b3c 100644 --- a/rts/win32/IOManager.c +++ b/rts/win32/IOManager.c @@ -199,7 +199,17 @@ IOWorkerProc(PVOID param) /* Approximate implementation of threadDelay; * * Note: Sleep() is in milliseconds, not micros. - */ + * + * MSDN says of Sleep: + * If dwMilliseconds is greater than one tick + * but less than two, the wait can be anywhere + * between one and two ticks, and so on. + * + * so we need to add (milliseconds-per-tick - 1) + * to the amount of time we sleep for. + * + * test ThreadDelay001 fails if we get this wrong. + */ Sleep(((work->workData.delayData.usecs + 999) / 1000) + iom->sleepResolution - 1); len = work->workData.delayData.usecs; complData = NULL; |