[Mesa-dev] [PATCH 1/4] gallium/os: Fix os_time_sleep() on Windows for small durations.

[jfonseca at vmware.com]

From: José Fonseca <jfonseca at vmware.com>

Prevents undetermined sleeps.
---
 src/gallium/auxiliary/os/os_time.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/gallium/auxiliary/os/os_time.c b/src/gallium/auxiliary/os/os_time.c
index 4055125..f943e0f 100644
--- a/src/gallium/auxiliary/os/os_time.c
+++ b/src/gallium/auxiliary/os/os_time.c
@@ -88,7 +88,11 @@ os_time_get_nano(void)
 void
 os_time_sleep(int64_t usecs)
 {
-   Sleep((usecs + 999) / 1000);
+   DWORD dwMilliseconds = (usecs + 999) / 1000;
+   /* Avoid Sleep(O) as that would cause to sleep for an undetermined duration */
+   if (dwMilliseconds) {
+      Sleep(dwMilliseconds);
+   }
 }
 
 #endif
-- 
1.7.9.5