From: José Fonseca <jfonseca@vmware.com>
Date: Tue, 4 Dec 2012 19:44:08 +0000 (+0000)
Subject: gallium/os: Fix os_time_sleep() on Windows for small durations.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7e14293556bf8b4248728d2952752c13f70647f3;p=mesa.git

gallium/os: Fix os_time_sleep() on Windows for small durations.

Prevents undetermined sleeps.

Reviewed-by: Brian Paul <brianp@vmware.com>
---

diff --git a/src/gallium/auxiliary/os/os_time.c b/src/gallium/auxiliary/os/os_time.c
index 40551252b25..f943e0f3162 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